convert script and interface changes

Small changes and fixes for hub refactor

.github/workflows/main.yml

@@ -1,24 +1,24 @@
 name: ci
-on: ["push", "pull_request", "workflow_dispatch"]
+on: ["push", "pull_request"]
 
 jobs:
 
   lint:
     name: lint
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v1
         with:
-          python-version: '3.9'
+          python-version: '3.7'
       - name: extract pip cache
-        uses: actions/cache@v3
+        uses: actions/cache@v2
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('setup.py') }}
           restore-keys: ${{ runner.os }}-pip-
       - run: pip install --user --upgrade pip wheel
-      - run: pip install -e .[lint]
+      - run: pip install -e .[torrent,lint]
       - run: make lint
 
   tests-unit:
@@ -26,31 +26,31 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
+          - ubuntu-latest
           - macos-latest
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v1
         with:
-          python-version: '3.9'
+          python-version: '3.7'
       - name: set pip cache dir
-        shell: bash
+        id: pip-cache
-        run: echo "PIP_CACHE_DIR=$(pip cache dir)" >> $GITHUB_ENV
+        run: echo "::set-output name=dir::$(pip cache dir)"
       - name: extract pip cache
-        uses: actions/cache@v3
+        uses: actions/cache@v2
         with:
-          path: ${{ env.PIP_CACHE_DIR }}
+          path: ${{ steps.pip-cache.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('setup.py') }}
           restore-keys: ${{ runner.os }}-pip-
       - id: os-name
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v1
         with:
           string: ${{ runner.os }}
-      - run: python -m pip install --user --upgrade pip wheel
+      - run: pip install --user --upgrade pip wheel
       - if: startsWith(runner.os, 'linux')
-        run: pip install -e .[test]
+        run: pip install -e .[torrent,test]
       - if: startsWith(runner.os, 'linux')
         env:
           HOME: /tmp
@@ -72,7 +72,7 @@ jobs:
 
   tests-integration:
     name: "tests / integration"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         test:
@@ -81,6 +81,8 @@ jobs:
           - claims
           - takeovers
           - transactions
+          - claims_legacy_search
+          - takeovers_legacy_search
           - other
     steps:
       - name: Configure sysctl limits
@@ -93,16 +95,16 @@ jobs:
         uses: elastic/elastic-github-actions/elasticsearch@master
         with:
           stack-version: 7.12.1
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v1
         with:
-          python-version: '3.9'
+          python-version: '3.7'
       - if: matrix.test == 'other'
         run: |
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends ffmpeg
       - name: extract pip cache
-        uses: actions/cache@v3
+        uses: actions/cache@v2
         with:
           path: ./.tox
           key: tox-integration-${{ matrix.test }}-${{ hashFiles('setup.py') }}
@@ -123,7 +125,7 @@ jobs:
 
   coverage:
     needs: ["tests-unit", "tests-integration"]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: finalize coverage report submission
         env:
@@ -138,29 +140,29 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
+          - ubuntu-18.04
           - macos-latest
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v1
         with:
-          python-version: '3.9'
+          python-version: '3.7'
       - id: os-name
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v1
         with:
           string: ${{ runner.os }}
       - name: set pip cache dir
-        shell: bash
+        id: pip-cache
-        run: echo "PIP_CACHE_DIR=$(pip cache dir)" >> $GITHUB_ENV
+        run: echo "::set-output name=dir::$(pip cache dir)"
       - name: extract pip cache
-        uses: actions/cache@v3
+        uses: actions/cache@v2
         with:
-          path: ${{ env.PIP_CACHE_DIR }}
+          path: ${{ steps.pip-cache.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('setup.py') }}
           restore-keys: ${{ runner.os }}-pip-
-      - run: pip install pyinstaller==4.6
+      - run: pip install pyinstaller==4.4
       - run: pip install -e .
       - if: startsWith(github.ref, 'refs/tags/v')
         run: python docker/set_build.py
@@ -175,7 +177,7 @@ jobs:
           pip install pywin32==301
           pyinstaller --additional-hooks-dir=scripts/. --icon=icons/lbry256.ico --onefile --name lbrynet lbry/extras/cli.py
           dist/lbrynet.exe --version
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v2
         with:
           name: lbrynet-${{ steps.os-name.outputs.lowercase }}
           path: dist/
@@ -184,7 +186,7 @@ jobs:
     name: "release"
     if: startsWith(github.ref, 'refs/tags/v')
     needs: ["build"]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
       - uses: actions/download-artifact@v2

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   release:
     name: "slack notification"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: LoveToKnow/slackify-markdown-action@v1.0.0
         id: markdown

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2022 LBRY Inc
+Copyright (c) 2015-2020 LBRY Inc
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish,

convert_leveldb_rocksdb.py

@@ -0,0 +1,40 @@
+import os
+import plyvel
+from lbry.wallet.server.db.prefixes import HubDB, DB_PREFIXES
+
+
+def main(db_dir: str):
+    old_path = os.path.join(db_dir, 'lbry-leveldb')
+    new_path = os.path.join(db_dir, 'lbry-rocksdb')
+    old_db = plyvel.DB(
+        old_path, create_if_missing=False, max_open_files=64,
+    )
+    db = HubDB(new_path, max_open_files=64)
+    try:
+
+        for prefix, cf in db.column_families.items():
+            cnt = 0
+            for shard_int in range(2**8):
+                shard_prefix = prefix + shard_int.to_bytes(1, byteorder='big')
+                with db._db.write_batch() as batch:
+                    batch_put = batch.put
+                    with old_db.iterator(prefix=shard_prefix, fill_cache=False) as it:
+                        cnt_batch = 0
+                        for k, v in it:
+                            batch_put((cf, k), v)
+                            cnt += 1
+                            cnt_batch += 1
+                            if cnt % 100_000 == 0:
+                                print(f"wrote {cnt} {DB_PREFIXES(prefix).name} items")
+                            if cnt_batch % 1_000_000 == 0:
+                                print(f"cnt_batch {cnt_batch} flushing 1m items")
+                                db._db.write(batch)
+                                batch.clear()
+
+    finally:
+        old_db.close()
+        db.close()
+
+
+if __name__ == "__main__":
+    main('/mnt/sdb/wallet_server/_data/')

docker/Dockerfile.dht_node

@@ -2,7 +2,6 @@ FROM debian:10-slim
 
 ARG user=lbry
 ARG projects_dir=/home/$user
-ARG db_dir=/database
 
 ARG DOCKER_TAG
 ARG DOCKER_COMMIT=docker
@@ -28,16 +27,12 @@ RUN groupadd -g 999 $user && useradd -m -u 999 -g $user $user
 
 COPY . $projects_dir
 RUN chown -R $user:$user $projects_dir
-RUN mkdir -p $db_dir
-RUN chown -R $user:$user $db_dir
 
 USER $user
 WORKDIR $projects_dir
 
-RUN python3 -m pip install -U setuptools pip
 RUN make install
 RUN python3 docker/set_build.py
 RUN rm ~/.cache -rf
-VOLUME $db_dir
 ENTRYPOINT ["python3", "scripts/dht_node.py"]
 

docker/Dockerfile.wallet_server

@@ -15,7 +15,6 @@ RUN apt-get update && \
       build-essential \
       automake libtool \
       pkg-config \
-      libleveldb-dev \
       python3.7 \
       python3-dev \
       python3-pip \

docker/Dockerfile.wallet_server_deploy

@@ -0,0 +1,48 @@
+# FROM debian:10-slim
+FROM python:3.7.12-slim-buster
+
+ARG user=lbry
+ARG db_dir=/database
+ARG projects_dir=/home/$user
+
+ARG DOCKER_TAG
+ARG DOCKER_COMMIT=docker
+ENV DOCKER_TAG=$DOCKER_TAG DOCKER_COMMIT=$DOCKER_COMMIT
+
+RUN apt-get update && \
+    apt-get -y --no-install-recommends install \
+      wget \
+      tar unzip \
+      build-essential \
+      automake libtool \
+      pkg-config
+
+RUN pip install uvloop
+RUN groupadd -g 999 $user && useradd -m -u 999 -g $user $user
+RUN mkdir -p $db_dir
+RUN chown -R $user:$user $db_dir
+
+COPY . $projects_dir
+RUN chown -R $user:$user $projects_dir
+
+USER $user
+WORKDIR $projects_dir
+
+RUN make install
+RUN python3 docker/set_build.py
+RUN rm ~/.cache -rf
+
+# entry point
+ARG host=0.0.0.0
+ARG tcp_port=50001
+ARG daemon_url=http://lbry:lbry@192.99.151.178:9245/
+VOLUME $db_dir
+ENV TCP_PORT=$tcp_port
+ENV HOST=$host
+ENV DAEMON_URL=$daemon_url
+ENV DB_DIRECTORY=$db_dir
+ENV MAX_SESSIONS=1000000000
+ENV MAX_SEND=1000000000000000000
+ENV EVENT_LOOP_POLICY=uvloop
+COPY ./docker/wallet_server_entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

docker/wallet_server_entrypoint.sh

@@ -20,6 +20,14 @@ if [[ -n "$SNAPSHOT_URL" ]] && [[ ! -f /database/lbry-leveldb ]]; then
   rm "$filename"
 fi
 
-/home/lbry/.local/bin/lbry-hub-elastic-sync
+if [ -z "$HUB_COMMAND" ]; then
-echo 'starting server'
+  echo "HUB_COMMAND env variable must be writer, reader, or es_sync"
-/home/lbry/.local/bin/lbry-hub "$@"
+  exit 1
+fi
+
+case "$HUB_COMMAND" in
+  writer ) /home/lbry/.local/bin/lbry-hub-writer "$@" ;;
+  reader ) /home/lbry/.local/bin/lbry-hub-server "$@" ;;
+  es_sync ) /home/lbry/.local/bin/lbry-hub-elastic-sync ;;
+  * ) "HUB_COMMAND env variable must be writer, reader, or es_sync" && exit 1 ;;
+esac

lbry/__init__.py

@@ -1,2 +1,2 @@
-__version__ = "0.113.0"
+__version__ = "0.106.0"
 version = tuple(map(int, __version__.split('.')))  # pylint: disable=invalid-name

lbry/blob/blob_file.py

@@ -87,8 +87,8 @@ class AbstractBlob:
         self.blob_completed_callback = blob_completed_callback
         self.blob_directory = blob_directory
         self.writers: typing.Dict[typing.Tuple[typing.Optional[str], typing.Optional[int]], HashBlobWriter] = {}
-        self.verified: asyncio.Event = asyncio.Event()
+        self.verified: asyncio.Event = asyncio.Event(loop=self.loop)
-        self.writing: asyncio.Event = asyncio.Event()
+        self.writing: asyncio.Event = asyncio.Event(loop=self.loop)
         self.readers: typing.List[typing.BinaryIO] = []
         self.added_on = added_on or time.time()
         self.is_mine = is_mine
@@ -201,7 +201,7 @@ class AbstractBlob:
         writer = blob.get_blob_writer()
         writer.write(blob_bytes)
         await blob.verified.wait()
-        return BlobInfo(blob_num, length, binascii.hexlify(iv).decode(), added_on, blob_hash, is_mine)
+        return BlobInfo(blob_num, length, binascii.hexlify(iv).decode(), blob_hash, added_on, is_mine)
 
     def save_verified_blob(self, verified_bytes: bytes):
         if self.verified.is_set():
@@ -222,7 +222,7 @@ class AbstractBlob:
                         peer_port: typing.Optional[int] = None) -> HashBlobWriter:
         if (peer_address, peer_port) in self.writers and not self.writers[(peer_address, peer_port)].closed():
             raise OSError(f"attempted to download blob twice from {peer_address}:{peer_port}")
-        fut = asyncio.Future()
+        fut = asyncio.Future(loop=self.loop)
         writer = HashBlobWriter(self.blob_hash, self.get_length, fut)
         self.writers[(peer_address, peer_port)] = writer
 

lbry/blob/blob_info.py

@@ -12,8 +12,8 @@ class BlobInfo:
     ]
 
     def __init__(
-            self, blob_num: int, length: int, iv: str, added_on,
+            self, blob_num: int, length: int, iv: str,
-             blob_hash: typing.Optional[str] = None, is_mine=False):
+             blob_hash: typing.Optional[str] = None, added_on=0, is_mine=False):
         self.blob_hash = blob_hash
         self.blob_num = blob_num
         self.length = length

lbry/blob/blob_manager.py

@@ -83,8 +83,6 @@ class BlobManager:
         to_add = await self.storage.sync_missing_blobs(in_blobfiles_dir)
         if to_add:
             self.completed_blob_hashes.update(to_add)
-        # check blobs that aren't set as finished but were seen on disk
-        await self.ensure_completed_blobs_status(in_blobfiles_dir - to_add)
         if self.config.track_bandwidth:
             self.connection_manager.start()
         return True
@@ -115,18 +113,9 @@ class BlobManager:
                 (blob.blob_hash, blob.length, blob.added_on, blob.is_mine), finished=False)
             )
 
-    async def ensure_completed_blobs_status(self, blob_hashes: typing.Iterable[str]):
+    def check_completed_blobs(self, blob_hashes: typing.List[str]) -> typing.List[str]:
-        """Ensures that completed blobs from a given list of blob hashes are set as 'finished' in the database."""
+        """Returns of the blobhashes_to_check, which are valid"""
-        to_add = []
+        return [blob_hash for blob_hash in blob_hashes if self.is_blob_verified(blob_hash)]
-        for blob_hash in blob_hashes:
-            if not self.is_blob_verified(blob_hash):
-                continue
-            blob = self.get_blob(blob_hash)
-            to_add.append((blob.blob_hash, blob.length, blob.added_on, blob.is_mine))
-            if len(to_add) > 500:
-                await self.storage.add_blobs(*to_add, finished=True)
-                to_add.clear()
-        return await self.storage.add_blobs(*to_add, finished=True)
 
     def delete_blob(self, blob_hash: str):
         if not is_valid_blobhash(blob_hash):

lbry/blob/disk_space_manager.py

@@ -36,29 +36,31 @@ class DiskSpaceManager:
         await self._clean(True)
 
     async def _clean(self, is_network_blob=False):
-        space_used_mb = await self.get_space_used_mb(cached=False)
+        space_used_bytes = await self.get_space_used_bytes()
         if is_network_blob:
-            space_used_mb = space_used_mb['network_storage']
+            space_used_bytes = space_used_bytes['network_storage']
         else:
-            space_used_mb = space_used_mb['content_storage'] + space_used_mb['private_storage']
+            space_used_bytes = space_used_bytes['content_storage'] + space_used_bytes['private_storage']
         storage_limit_mb = self.config.network_storage_limit if is_network_blob else self.config.blob_storage_limit
+        storage_limit = storage_limit_mb*1024*1024 if storage_limit_mb else None
         if self.analytics:
             asyncio.create_task(
-                self.analytics.send_disk_space_used(space_used_mb, storage_limit_mb, is_network_blob)
+                self.analytics.send_disk_space_used(space_used_bytes, storage_limit, is_network_blob)
             )
+        if not storage_limit:
+            return 0
         delete = []
-        available = storage_limit_mb - space_used_mb
+        available = storage_limit - space_used_bytes
-        if storage_limit_mb == 0 if not is_network_blob else available >= 0:
+        if available > 0:
             return 0
         for blob_hash, file_size, _ in await self.db.get_stored_blobs(is_mine=False, is_network_blob=is_network_blob):
             delete.append(blob_hash)
-            available += int(file_size/1024.0/1024.0)
+            available += file_size
-            if available >= 0:
+            if available > 0:
                 break
         if delete:
             await self.db.stop_all_files()
             await self.blob_manager.delete_blobs(delete, delete_from_db=True)
-        self._used_space_bytes = None
         return len(delete)
 
     async def cleaning_loop(self):

lbry/blob_exchange/client.py

@@ -32,7 +32,7 @@ class BlobExchangeClientProtocol(asyncio.Protocol):
         self.buf = b''
 
         # this is here to handle the race when the downloader is closed right as response_fut gets a result
-        self.closed = asyncio.Event()
+        self.closed = asyncio.Event(loop=self.loop)
 
     def data_received(self, data: bytes):
         if self.connection_manager:
@@ -111,7 +111,7 @@ class BlobExchangeClientProtocol(asyncio.Protocol):
             self.transport.write(msg)
             if self.connection_manager:
                 self.connection_manager.sent_data(f"{self.peer_address}:{self.peer_port}", len(msg))
-            response: BlobResponse = await asyncio.wait_for(self._response_fut, self.peer_timeout)
+            response: BlobResponse = await asyncio.wait_for(self._response_fut, self.peer_timeout, loop=self.loop)
             availability_response = response.get_availability_response()
             price_response = response.get_price_response()
             blob_response = response.get_blob_response()
@@ -151,7 +151,7 @@ class BlobExchangeClientProtocol(asyncio.Protocol):
                 f" timeout in {self.peer_timeout}"
             log.debug(msg)
             msg = f"downloaded {self.blob.blob_hash[:8]} from {self.peer_address}:{self.peer_port}"
-            await asyncio.wait_for(self.writer.finished, self.peer_timeout)
+            await asyncio.wait_for(self.writer.finished, self.peer_timeout, loop=self.loop)
             # wait for the io to finish
             await self.blob.verified.wait()
             log.info("%s at %fMB/s", msg,
@@ -187,7 +187,7 @@ class BlobExchangeClientProtocol(asyncio.Protocol):
         try:
             self._blob_bytes_received = 0
             self.blob, self.writer = blob, blob.get_blob_writer(self.peer_address, self.peer_port)
-            self._response_fut = asyncio.Future()
+            self._response_fut = asyncio.Future(loop=self.loop)
             return await self._download_blob()
         except OSError:
             # i'm not sure how to fix this race condition - jack
@@ -244,7 +244,7 @@ async def request_blob(loop: asyncio.AbstractEventLoop, blob: Optional['Abstract
     try:
         if not connected_protocol:
             await asyncio.wait_for(loop.create_connection(lambda: protocol, address, tcp_port),
-                                   peer_connect_timeout)
+                                   peer_connect_timeout, loop=loop)
             connected_protocol = protocol
         if blob is None or blob.get_is_verified() or not blob.is_writeable():
             # blob is None happens when we are just opening a connection

lbry/blob_exchange/downloader.py

@@ -30,7 +30,7 @@ class BlobDownloader:
         self.failures: typing.Dict['KademliaPeer', int] = {}
         self.connection_failures: typing.Set['KademliaPeer'] = set()
         self.connections: typing.Dict['KademliaPeer', 'BlobExchangeClientProtocol'] = {}
-        self.is_running = asyncio.Event()
+        self.is_running = asyncio.Event(loop=self.loop)
 
     def should_race_continue(self, blob: 'AbstractBlob'):
         max_probes = self.config.max_connections_per_download * (1 if self.connections else 10)
@@ -64,8 +64,8 @@ class BlobDownloader:
             self.scores[peer] = bytes_received / elapsed if bytes_received and elapsed else 1
 
     async def new_peer_or_finished(self):
-        active_tasks = list(self.active_connections.values()) + [asyncio.create_task(asyncio.sleep(1))]
+        active_tasks = list(self.active_connections.values()) + [asyncio.sleep(1)]
-        await asyncio.wait(active_tasks, return_when='FIRST_COMPLETED')
+        await asyncio.wait(active_tasks, loop=self.loop, return_when='FIRST_COMPLETED')
 
     def cleanup_active(self):
         if not self.active_connections and not self.connections:
@@ -97,15 +97,21 @@ class BlobDownloader:
                     "%s running, %d peers, %d ignored, %d active, %s connections", blob_hash[:6],
                     len(batch), len(self.ignored), len(self.active_connections), len(self.connections)
                 )
+                re_add: typing.Set['KademliaPeer'] = set()
                 for peer in sorted(batch, key=lambda peer: self.scores.get(peer, 0), reverse=True):
                     if peer in self.ignored:
                         continue
-                    if peer in self.active_connections or not self.should_race_continue(blob):
+                    if peer in self.active_connections:
+                        if peer not in re_add:
+                            re_add.add(peer)
                         continue
+                    if not self.should_race_continue(blob):
+                        break
                     log.debug("request %s from %s:%i", blob_hash[:8], peer.address, peer.tcp_port)
                     t = self.loop.create_task(self.request_blob_from_peer(blob, peer, connection_id))
                     self.active_connections[peer] = t
-                self.peer_queue.put_nowait(list(batch))
+                if not re_add:
+                    self.peer_queue.put_nowait(list(batch))
                 await self.new_peer_or_finished()
                 self.cleanup_active()
             log.debug("downloaded %s", blob_hash[:8])
@@ -126,7 +132,7 @@ class BlobDownloader:
 
 async def download_blob(loop, config: 'Config', blob_manager: 'BlobManager', dht_node: 'Node',
                         blob_hash: str) -> 'AbstractBlob':
-    search_queue = asyncio.Queue(maxsize=config.max_connections_per_download)
+    search_queue = asyncio.Queue(loop=loop, maxsize=config.max_connections_per_download)
     search_queue.put_nowait(blob_hash)
     peer_queue, accumulate_task = dht_node.accumulate_peers(search_queue)
     fixed_peers = None if not config.fixed_peers else await get_kademlia_peers_from_hosts(config.fixed_peers)

lbry/blob_exchange/server.py

@@ -1,7 +1,6 @@
 import asyncio
 import binascii
 import logging
-import socket
 import typing
 from json.decoder import JSONDecodeError
 from lbry.blob_exchange.serialization import BlobResponse, BlobRequest, blob_response_types
@@ -25,19 +24,19 @@ class BlobServerProtocol(asyncio.Protocol):
         self.idle_timeout = idle_timeout
         self.transfer_timeout = transfer_timeout
         self.server_task: typing.Optional[asyncio.Task] = None
-        self.started_listening = asyncio.Event()
+        self.started_listening = asyncio.Event(loop=self.loop)
         self.buf = b''
         self.transport: typing.Optional[asyncio.Transport] = None
         self.lbrycrd_address = lbrycrd_address
         self.peer_address_and_port: typing.Optional[str] = None
-        self.started_transfer = asyncio.Event()
+        self.started_transfer = asyncio.Event(loop=self.loop)
-        self.transfer_finished = asyncio.Event()
+        self.transfer_finished = asyncio.Event(loop=self.loop)
         self.close_on_idle_task: typing.Optional[asyncio.Task] = None
 
     async def close_on_idle(self):
         while self.transport:
             try:
-                await asyncio.wait_for(self.started_transfer.wait(), self.idle_timeout)
+                await asyncio.wait_for(self.started_transfer.wait(), self.idle_timeout, loop=self.loop)
             except asyncio.TimeoutError:
                 log.debug("closing idle connection from %s", self.peer_address_and_port)
                 return self.close()
@@ -101,7 +100,7 @@ class BlobServerProtocol(asyncio.Protocol):
                 log.debug("send %s to %s:%i", blob_hash, peer_address, peer_port)
                 self.started_transfer.set()
                 try:
-                    sent = await asyncio.wait_for(blob.sendfile(self), self.transfer_timeout)
+                    sent = await asyncio.wait_for(blob.sendfile(self), self.transfer_timeout, loop=self.loop)
                     if sent and sent > 0:
                         self.blob_manager.connection_manager.sent_data(self.peer_address_and_port, sent)
                         log.info("sent %s (%i bytes) to %s:%i", blob_hash, sent, peer_address, peer_port)
@@ -138,7 +137,7 @@ class BlobServerProtocol(asyncio.Protocol):
             try:
                 request = BlobRequest.deserialize(self.buf + data)
                 self.buf = remainder
-            except (UnicodeDecodeError, JSONDecodeError):
+            except JSONDecodeError:
                 log.error("request from %s is not valid json (%i bytes): %s", self.peer_address_and_port,
                           len(self.buf + data), '' if not data else binascii.hexlify(self.buf + data).decode())
                 self.close()
@@ -157,7 +156,7 @@ class BlobServer:
         self.loop = loop
         self.blob_manager = blob_manager
         self.server_task: typing.Optional[asyncio.Task] = None
-        self.started_listening = asyncio.Event()
+        self.started_listening = asyncio.Event(loop=self.loop)
         self.lbrycrd_address = lbrycrd_address
         self.idle_timeout = idle_timeout
         self.transfer_timeout = transfer_timeout
@@ -168,13 +167,6 @@ class BlobServer:
             raise Exception("already running")
 
         async def _start_server():
-            # checking if the port is in use
-            # thx https://stackoverflow.com/a/52872579
-            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
-                if s.connect_ex(('localhost', port)) == 0:
-                    # the port is already in use!
-                    log.error("Failed to bind TCP %s:%d", interface, port)
-
             server = await self.loop.create_server(
                 lambda: self.server_protocol_class(self.loop, self.blob_manager, self.lbrycrd_address,
                                                    self.idle_timeout, self.transfer_timeout),

lbry/conf.py

@@ -622,11 +622,7 @@ class Config(CLIConfig):
         "Routing table bucket index below which we always split the bucket if given a new key to add to it and "
         "the bucket is full. As this value is raised the depth of the routing table (and number of peers in it) "
         "will increase. This setting is used by seed nodes, you probably don't want to change it during normal "
-        "use.", 2
+        "use.", 1
-    )
-    is_bootstrap_node = Toggle(
-        "When running as a bootstrap node, disable all logic related to balancing the routing table, so we can "
-        "add as many peers as possible and better help first-runs.", False
     )
 
     # protocol timeouts
@@ -685,14 +681,6 @@ class Config(CLIConfig):
         ('cdn.reflector.lbry.com', 5567)
     ])
 
-    tracker_servers = Servers("BitTorrent-compatible (BEP15) UDP trackers for helping P2P discovery", [
-        ('tracker.lbry.com', 9252),
-        ('tracker.lbry.grin.io', 9252),
-        ('tracker.lbry.pigg.es', 9252),
-        ('tracker.lizard.technology', 9252),
-        ('s1.lbry.network', 9252),
-    ])
-
     lbryum_servers = Servers("SPV wallet servers", [
         ('spv11.lbry.com', 50001),
         ('spv12.lbry.com', 50001),
@@ -703,20 +691,14 @@ class Config(CLIConfig):
         ('spv17.lbry.com', 50001),
         ('spv18.lbry.com', 50001),
         ('spv19.lbry.com', 50001),
-        ('hub.lbry.grin.io', 50001),
-        ('hub.lizard.technology', 50001),
-        ('s1.lbry.network', 50001),
     ])
     known_dht_nodes = Servers("Known nodes for bootstrapping connection to the DHT", [
         ('dht.lbry.grin.io', 4444),  # Grin
         ('dht.lbry.madiator.com', 4444),  # Madiator
-        ('dht.lbry.pigg.es', 4444), # Pigges
         ('lbrynet1.lbry.com', 4444),  # US EAST
         ('lbrynet2.lbry.com', 4444),  # US WEST
         ('lbrynet3.lbry.com', 4444),  # EU
-        ('lbrynet4.lbry.com', 4444),  # ASIA
+        ('lbrynet4.lbry.com', 4444)  # ASIA
-        ('dht.lizard.technology', 4444),  # Jack
-        ('s2.lbry.network', 4444),
     ])
 
     # blockchain

lbry/connection_manager.py

@@ -67,7 +67,7 @@ class ConnectionManager:
 
         while True:
             last = time.perf_counter()
-            await asyncio.sleep(0.1)
+            await asyncio.sleep(0.1, loop=self.loop)
             self._status['incoming_bps'].clear()
             self._status['outgoing_bps'].clear()
             now = time.perf_counter()

lbry/dht/blob_announcer.py

@@ -1,9 +1,6 @@
 import asyncio
 import typing
 import logging
-
-from prometheus_client import Counter, Gauge
-
 if typing.TYPE_CHECKING:
     from lbry.dht.node import Node
     from lbry.extras.daemon.storage import SQLiteStorage
@@ -12,59 +9,45 @@ log = logging.getLogger(__name__)
 
 
 class BlobAnnouncer:
-    announcements_sent_metric = Counter(
-        "announcements_sent", "Number of announcements sent and their respective status.", namespace="dht_node",
-        labelnames=("peers", "error"),
-    )
-    announcement_queue_size_metric = Gauge(
-        "announcement_queue_size", "Number of hashes waiting to be announced.", namespace="dht_node",
-        labelnames=("scope",)
-    )
-
     def __init__(self, loop: asyncio.AbstractEventLoop, node: 'Node', storage: 'SQLiteStorage'):
         self.loop = loop
         self.node = node
         self.storage = storage
         self.announce_task: asyncio.Task = None
         self.announce_queue: typing.List[str] = []
-        self._done = asyncio.Event()
-        self.announced = set()
 
-    async def _run_consumer(self):
+    async def _submit_announcement(self, blob_hash):
-        while self.announce_queue:
+        try:
-            try:
+            peers = len(await self.node.announce_blob(blob_hash))
-                blob_hash = self.announce_queue.pop()
+            if peers > 4:
-                peers = len(await self.node.announce_blob(blob_hash))
+                return blob_hash
-                self.announcements_sent_metric.labels(peers=peers, error=False).inc()
+            else:
-                if peers > 4:
+                log.debug("failed to announce %s, could only find %d peers, retrying soon.", blob_hash[:8], peers)
-                    self.announced.add(blob_hash)
+        except Exception as err:
-                else:
+            if isinstance(err, asyncio.CancelledError):  # TODO: remove when updated to 3.8
-                    log.debug("failed to announce %s, could only find %d peers, retrying soon.", blob_hash[:8], peers)
+                raise err
-            except Exception as err:
+            log.warning("error announcing %s: %s", blob_hash[:8], str(err))
-                self.announcements_sent_metric.labels(peers=0, error=True).inc()
-                log.warning("error announcing %s: %s", blob_hash[:8], str(err))
 
     async def _announce(self, batch_size: typing.Optional[int] = 10):
         while batch_size:
             if not self.node.joined.is_set():
                 await self.node.joined.wait()
-            await asyncio.sleep(60)
+            await asyncio.sleep(60, loop=self.loop)
             if not self.node.protocol.routing_table.get_peers():
                 log.warning("No peers in DHT, announce round skipped")
                 continue
             self.announce_queue.extend(await self.storage.get_blobs_to_announce())
-            self.announcement_queue_size_metric.labels(scope="global").set(len(self.announce_queue))
             log.debug("announcer task wake up, %d blobs to announce", len(self.announce_queue))
             while len(self.announce_queue) > 0:
                 log.info("%i blobs to announce", len(self.announce_queue))
-                await asyncio.gather(*[self._run_consumer() for _ in range(batch_size)])
+                announced = await asyncio.gather(*[
-                announced = list(filter(None, self.announced))
+                    self._submit_announcement(
+                        self.announce_queue.pop()) for _ in range(batch_size) if self.announce_queue
+                ], loop=self.loop)
+                announced = list(filter(None, announced))
                 if announced:
                     await self.storage.update_last_announced_blobs(announced)
                     log.info("announced %i blobs", len(announced))
-                    self.announced.clear()
-            self._done.set()
-            self._done.clear()
 
     def start(self, batch_size: typing.Optional[int] = 10):
         assert not self.announce_task or self.announce_task.done(), "already running"
@@ -73,6 +56,3 @@ class BlobAnnouncer:
     def stop(self):
         if self.announce_task and not self.announce_task.done():
             self.announce_task.cancel()
-
-    def wait(self):
-        return self._done.wait()

lbry/dht/constants.py

@@ -20,6 +20,7 @@ MAYBE_PING_DELAY = 300  # 5 minutes
 CHECK_REFRESH_INTERVAL = REFRESH_INTERVAL / 5
 RPC_ID_LENGTH = 20
 PROTOCOL_VERSION = 1
+BOTTOM_OUT_LIMIT = 3
 MSG_SIZE_LIMIT = 1400
 
 

lbry/dht/node.py

@@ -5,7 +5,7 @@ import socket
 
 from prometheus_client import Gauge
 
-from lbry.utils import aclosing, resolve_host
+from lbry.utils import resolve_host
 from lbry.dht import constants
 from lbry.dht.peer import make_kademlia_peer
 from lbry.dht.protocol.distance import Distance
@@ -30,14 +30,14 @@ class Node:
     )
     def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager', node_id: bytes, udp_port: int,
                  internal_udp_port: int, peer_port: int, external_ip: str, rpc_timeout: float = constants.RPC_TIMEOUT,
-                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX, is_bootstrap_node: bool = False,
+                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX,
                  storage: typing.Optional['SQLiteStorage'] = None):
         self.loop = loop
         self.internal_udp_port = internal_udp_port
         self.protocol = KademliaProtocol(loop, peer_manager, node_id, external_ip, udp_port, peer_port, rpc_timeout,
-                                         split_buckets_under_index, is_bootstrap_node)
+                                         split_buckets_under_index)
         self.listening_port: asyncio.DatagramTransport = None
-        self.joined = asyncio.Event()
+        self.joined = asyncio.Event(loop=self.loop)
         self._join_task: asyncio.Task = None
         self._refresh_task: asyncio.Task = None
         self._storage = storage
@@ -70,6 +70,13 @@ class Node:
 
             # get ids falling in the midpoint of each bucket that hasn't been recently updated
             node_ids = self.protocol.routing_table.get_refresh_list(0, True)
+            # if we have 3 or fewer populated buckets get two random ids in the range of each to try and
+            # populate/split the buckets further
+            buckets_with_contacts = self.protocol.routing_table.buckets_with_contacts()
+            if buckets_with_contacts <= 3:
+                for i in range(buckets_with_contacts):
+                    node_ids.append(self.protocol.routing_table.random_id_in_bucket_range(i))
+                    node_ids.append(self.protocol.routing_table.random_id_in_bucket_range(i))
 
             if self.protocol.routing_table.get_peers():
                 # if we have node ids to look up, perform the iterative search until we have k results
@@ -79,7 +86,7 @@ class Node:
             else:
                 if force_once:
                     break
-                fut = asyncio.Future()
+                fut = asyncio.Future(loop=self.loop)
                 self.loop.call_later(constants.REFRESH_INTERVAL // 4, fut.set_result, None)
                 await fut
                 continue
@@ -93,7 +100,7 @@ class Node:
             if force_once:
                 break
 
-            fut = asyncio.Future()
+            fut = asyncio.Future(loop=self.loop)
             self.loop.call_later(constants.REFRESH_INTERVAL, fut.set_result, None)
             await fut
 
@@ -108,7 +115,7 @@ class Node:
         for peer in peers:
             log.debug("store to %s %s %s", peer.address, peer.udp_port, peer.tcp_port)
         stored_to_tup = await asyncio.gather(
-            *(self.protocol.store_to_peer(hash_value, peer) for peer in peers)
+            *(self.protocol.store_to_peer(hash_value, peer) for peer in peers), loop=self.loop
         )
         stored_to = [node_id for node_id, contacted in stored_to_tup if contacted]
         if stored_to:
@@ -182,36 +189,39 @@ class Node:
                             for address, udp_port in known_node_urls or []
                         ]))
                     except socket.gaierror:
-                        await asyncio.sleep(30)
+                        await asyncio.sleep(30, loop=self.loop)
                         continue
 
                 self.protocol.peer_manager.reset()
                 self.protocol.ping_queue.enqueue_maybe_ping(*seed_peers, delay=0.0)
                 await self.peer_search(self.protocol.node_id, shortlist=seed_peers, count=32)
 
-            await asyncio.sleep(1)
+            await asyncio.sleep(1, loop=self.loop)
 
     def start(self, interface: str, known_node_urls: typing.Optional[typing.List[typing.Tuple[str, int]]] = None):
         self._join_task = self.loop.create_task(self.join_network(interface, known_node_urls))
 
     def get_iterative_node_finder(self, key: bytes, shortlist: typing.Optional[typing.List['KademliaPeer']] = None,
+                                  bottom_out_limit: int = constants.BOTTOM_OUT_LIMIT,
                                   max_results: int = constants.K) -> IterativeNodeFinder:
-        shortlist = shortlist or self.protocol.routing_table.find_close_peers(key)
+
-        return IterativeNodeFinder(self.loop, self.protocol, key, max_results, shortlist)
+        return IterativeNodeFinder(self.loop, self.protocol.peer_manager, self.protocol.routing_table, self.protocol,
+                                   key, bottom_out_limit, max_results, None, shortlist)
 
     def get_iterative_value_finder(self, key: bytes, shortlist: typing.Optional[typing.List['KademliaPeer']] = None,
+                                   bottom_out_limit: int = 40,
                                    max_results: int = -1) -> IterativeValueFinder:
-        shortlist = shortlist or self.protocol.routing_table.find_close_peers(key)
+
-        return IterativeValueFinder(self.loop, self.protocol, key, max_results, shortlist)
+        return IterativeValueFinder(self.loop, self.protocol.peer_manager, self.protocol.routing_table, self.protocol,
+                                    key, bottom_out_limit, max_results, None, shortlist)
 
     async def peer_search(self, node_id: bytes, count=constants.K, max_results=constants.K * 2,
-                          shortlist: typing.Optional[typing.List['KademliaPeer']] = None
+                          bottom_out_limit=20, shortlist: typing.Optional[typing.List['KademliaPeer']] = None
                           ) -> typing.List['KademliaPeer']:
         peers = []
-        async with aclosing(self.get_iterative_node_finder(
+        async for iteration_peers in self.get_iterative_node_finder(
-                node_id, shortlist=shortlist, max_results=max_results)) as node_finder:
+                node_id, shortlist=shortlist, bottom_out_limit=bottom_out_limit, max_results=max_results):
-            async for iteration_peers in node_finder:
+            peers.extend(iteration_peers)
-                peers.extend(iteration_peers)
         distance = Distance(node_id)
         peers.sort(key=lambda peer: distance(peer.node_id))
         return peers[:count]
@@ -237,41 +247,41 @@ class Node:
 
         # prioritize peers who reply to a dht ping first
         # this minimizes attempting to make tcp connections that won't work later to dead or unreachable peers
-        async with aclosing(self.get_iterative_value_finder(bytes.fromhex(blob_hash))) as value_finder:
+
-            async for results in value_finder:
+        async for results in self.get_iterative_value_finder(bytes.fromhex(blob_hash)):
-                to_put = []
+            to_put = []
-                for peer in results:
+            for peer in results:
-                    if peer.address == self.protocol.external_ip and self.protocol.peer_port == peer.tcp_port:
+                if peer.address == self.protocol.external_ip and self.protocol.peer_port == peer.tcp_port:
-                        continue
+                    continue
-                    is_good = self.protocol.peer_manager.peer_is_good(peer)
+                is_good = self.protocol.peer_manager.peer_is_good(peer)
-                    if is_good:
+                if is_good:
-                        # the peer has replied recently over UDP, it can probably be reached on the TCP port
+                    # the peer has replied recently over UDP, it can probably be reached on the TCP port
-                        to_put.append(peer)
+                    to_put.append(peer)
-                    elif is_good is None:
+                elif is_good is None:
-                        if not peer.udp_port:
+                    if not peer.udp_port:
-                            # TODO: use the same port for TCP and UDP
+                        # TODO: use the same port for TCP and UDP
-                            # the udp port must be guessed
+                        # the udp port must be guessed
-                            # default to the ports being the same. if the TCP port appears to be <=0.48.0 default,
+                        # default to the ports being the same. if the TCP port appears to be <=0.48.0 default,
-                            # including on a network with several nodes, then assume the udp port is proportionately
+                        # including on a network with several nodes, then assume the udp port is proportionately
-                            # based on a starting port of 4444
+                        # based on a starting port of 4444
-                            udp_port_to_try = peer.tcp_port
+                        udp_port_to_try = peer.tcp_port
-                            if 3400 > peer.tcp_port > 3332:
+                        if 3400 > peer.tcp_port > 3332:
-                                udp_port_to_try = (peer.tcp_port - 3333) + 4444
+                            udp_port_to_try = (peer.tcp_port - 3333) + 4444
-                            self.loop.create_task(put_into_result_queue_after_pong(
+                        self.loop.create_task(put_into_result_queue_after_pong(
-                                make_kademlia_peer(peer.node_id, peer.address, udp_port_to_try, peer.tcp_port)
+                            make_kademlia_peer(peer.node_id, peer.address, udp_port_to_try, peer.tcp_port)
-                            ))
+                        ))
-                        else:
-                            self.loop.create_task(put_into_result_queue_after_pong(peer))
                     else:
-                        # the peer is known to be bad/unreachable, skip trying to connect to it over TCP
+                        self.loop.create_task(put_into_result_queue_after_pong(peer))
-                        log.debug("skip bad peer %s:%i for %s", peer.address, peer.tcp_port, blob_hash)
+                else:
-                if to_put:
+                    # the peer is known to be bad/unreachable, skip trying to connect to it over TCP
-                    result_queue.put_nowait(to_put)
+                    log.debug("skip bad peer %s:%i for %s", peer.address, peer.tcp_port, blob_hash)
+            if to_put:
+                result_queue.put_nowait(to_put)
 
     def accumulate_peers(self, search_queue: asyncio.Queue,
                          peer_queue: typing.Optional[asyncio.Queue] = None
                          ) -> typing.Tuple[asyncio.Queue, asyncio.Task]:
-        queue = peer_queue or asyncio.Queue()
+        queue = peer_queue or asyncio.Queue(loop=self.loop)
         return queue, self.loop.create_task(self._accumulate_peers_for_value(search_queue, queue))
 
 

lbry/dht/peer.py

@@ -11,7 +11,7 @@ from lbry.dht import constants
 from lbry.dht.serialization.datagram import make_compact_address, make_compact_ip, decode_compact_address
 
 ALLOW_LOCALHOST = False
-CACHE_SIZE = 16384
+CACHE_SIZE = 2048
 log = logging.getLogger(__name__)
 
 
@@ -100,9 +100,6 @@ class PeerManager:
         self._node_id_reverse_mapping[node_id] = (address, udp_port)
         self.peer_manager_keys_metric.labels("global").set(self.count_cache_keys())
 
-    def get_node_id_for_endpoint(self, address, port):
-        return self._node_id_mapping.get((address, port))
-
     def prune(self):  # TODO: periodically call this
         now = self._loop.time()
         to_pop = []
@@ -153,10 +150,9 @@ class PeerManager:
     def peer_is_good(self, peer: 'KademliaPeer'):
         return self.contact_triple_is_good(peer.node_id, peer.address, peer.udp_port)
 
-
+    def decode_tcp_peer_from_compact_address(self, compact_address: bytes) -> 'KademliaPeer':  # pylint: disable=no-self-use
-def decode_tcp_peer_from_compact_address(compact_address: bytes) -> 'KademliaPeer':  # pylint: disable=no-self-use
+        node_id, address, tcp_port = decode_compact_address(compact_address)
-    node_id, address, tcp_port = decode_compact_address(compact_address)
+        return make_kademlia_peer(node_id, address, udp_port=None, tcp_port=tcp_port)
-    return make_kademlia_peer(node_id, address, udp_port=None, tcp_port=tcp_port)
 
 
 @dataclass(unsafe_hash=True)
@@ -194,6 +190,3 @@ class KademliaPeer:
 
     def compact_ip(self):
         return make_compact_ip(self.address)
-
-    def __str__(self):
-        return f"{self.__class__.__name__}({self.node_id.hex()[:8]}@{self.address}:{self.udp_port}-{self.tcp_port})"

lbry/dht/protocol/iterative_find.py

@@ -1,17 +1,17 @@
 import asyncio
 from itertools import chain
-from collections import defaultdict, OrderedDict
+from collections import defaultdict
-from collections.abc import AsyncIterator
 import typing
 import logging
 from typing import TYPE_CHECKING
 from lbry.dht import constants
 from lbry.dht.error import RemoteException, TransportNotConnected
 from lbry.dht.protocol.distance import Distance
-from lbry.dht.peer import make_kademlia_peer, decode_tcp_peer_from_compact_address
+from lbry.dht.peer import make_kademlia_peer
 from lbry.dht.serialization.datagram import PAGE_KEY
 
 if TYPE_CHECKING:
+    from lbry.dht.protocol.routing_table import TreeRoutingTable
     from lbry.dht.protocol.protocol import KademliaProtocol
     from lbry.dht.peer import PeerManager, KademliaPeer
 
@@ -26,15 +26,6 @@ class FindResponse:
     def get_close_triples(self) -> typing.List[typing.Tuple[bytes, str, int]]:
         raise NotImplementedError()
 
-    def get_close_kademlia_peers(self, peer_info) -> typing.Generator[typing.Iterator['KademliaPeer'], None, None]:
-        for contact_triple in self.get_close_triples():
-            node_id, address, udp_port = contact_triple
-            try:
-                yield make_kademlia_peer(node_id, address, udp_port)
-            except ValueError:
-                log.warning("misbehaving peer %s:%i returned peer with reserved ip %s:%i", peer_info.address,
-                            peer_info.udp_port, address, udp_port)
-
 
 class FindNodeResponse(FindResponse):
     def __init__(self, key: bytes, close_triples: typing.List[typing.Tuple[bytes, str, int]]):
@@ -65,33 +56,57 @@ class FindValueResponse(FindResponse):
         return [(node_id, address.decode(), port) for node_id, address, port in self.close_triples]
 
 
-class IterativeFinder(AsyncIterator):
+def get_shortlist(routing_table: 'TreeRoutingTable', key: bytes,
-    def __init__(self, loop: asyncio.AbstractEventLoop,
+                  shortlist: typing.Optional[typing.List['KademliaPeer']]) -> typing.List['KademliaPeer']:
-                 protocol: 'KademliaProtocol', key: bytes,
+    """
-                 max_results: typing.Optional[int] = constants.K,
+    If not provided, initialize the shortlist of peers to probe to the (up to) k closest peers in the routing table
+
+    :param routing_table: a TreeRoutingTable
+    :param key: a 48 byte hash
+    :param shortlist: optional manually provided shortlist, this is done during bootstrapping when there are no
+                      peers in the routing table. During bootstrap the shortlist is set to be the seed nodes.
+    """
+    if len(key) != constants.HASH_LENGTH:
+        raise ValueError("invalid key length: %i" % len(key))
+    return shortlist or routing_table.find_close_peers(key)
+
+
+class IterativeFinder:
+    def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager',
+                 routing_table: 'TreeRoutingTable', protocol: 'KademliaProtocol', key: bytes,
+                 bottom_out_limit: typing.Optional[int] = 2, max_results: typing.Optional[int] = constants.K,
+                 exclude: typing.Optional[typing.List[typing.Tuple[str, int]]] = None,
                  shortlist: typing.Optional[typing.List['KademliaPeer']] = None):
         if len(key) != constants.HASH_LENGTH:
             raise ValueError("invalid key length: %i" % len(key))
         self.loop = loop
-        self.peer_manager = protocol.peer_manager
+        self.peer_manager = peer_manager
+        self.routing_table = routing_table
         self.protocol = protocol
 
         self.key = key
-        self.max_results = max(constants.K, max_results)
+        self.bottom_out_limit = bottom_out_limit
+        self.max_results = max_results
+        self.exclude = exclude or []
 
-        self.active: typing.Dict['KademliaPeer', int] = OrderedDict()  # peer: distance, sorted
+        self.active: typing.Set['KademliaPeer'] = set()
         self.contacted: typing.Set['KademliaPeer'] = set()
         self.distance = Distance(key)
 
-        self.iteration_queue = asyncio.Queue()
+        self.closest_peer: typing.Optional['KademliaPeer'] = None
+        self.prev_closest_peer: typing.Optional['KademliaPeer'] = None
 
-        self.running_probes: typing.Dict['KademliaPeer', asyncio.Task] = {}
+        self.iteration_queue = asyncio.Queue(loop=self.loop)
+
+        self.running_probes: typing.Set[asyncio.Task] = set()
         self.iteration_count = 0
+        self.bottom_out_count = 0
         self.running = False
         self.tasks: typing.List[asyncio.Task] = []
-        for peer in shortlist:
+        self.delayed_calls: typing.List[asyncio.Handle] = []
+        for peer in get_shortlist(routing_table, key, shortlist):
             if peer.node_id:
-                self._add_active(peer, force=True)
+                self._add_active(peer)
             else:
                 # seed nodes
                 self._schedule_probe(peer)
@@ -123,79 +138,66 @@ class IterativeFinder(AsyncIterator):
         """
         return []
 
-    def _add_active(self, peer, force=False):
+    def _is_closer(self, peer: 'KademliaPeer') -> bool:
-        if not force and self.peer_manager.peer_is_good(peer) is False:
+        return not self.closest_peer or self.distance.is_closer(peer.node_id, self.closest_peer.node_id)
-            return
+
-        if peer in self.contacted:
+    def _add_active(self, peer):
-            return
         if peer not in self.active and peer.node_id and peer.node_id != self.protocol.node_id:
-            self.active[peer] = self.distance(peer.node_id)
+            self.active.add(peer)
-            self.active = OrderedDict(sorted(self.active.items(), key=lambda item: item[1]))
+            if self._is_closer(peer):
+                self.prev_closest_peer = self.closest_peer
+                self.closest_peer = peer
 
     async def _handle_probe_result(self, peer: 'KademliaPeer', response: FindResponse):
         self._add_active(peer)
-        for new_peer in response.get_close_kademlia_peers(peer):
+        for contact_triple in response.get_close_triples():
-            self._add_active(new_peer)
+            node_id, address, udp_port = contact_triple
+            try:
+                self._add_active(make_kademlia_peer(node_id, address, udp_port))
+            except ValueError:
+                log.warning("misbehaving peer %s:%i returned peer with reserved ip %s:%i", peer.address,
+                            peer.udp_port, address, udp_port)
         self.check_result_ready(response)
-        self._log_state(reason="check result")
-
-    def _reset_closest(self, peer):
-        if peer in self.active:
-            del self.active[peer]
 
     async def _send_probe(self, peer: 'KademliaPeer'):
         try:
             response = await self.send_probe(peer)
         except asyncio.TimeoutError:
-            self._reset_closest(peer)
+            self.active.discard(peer)
             return
-        except asyncio.CancelledError:
-            log.debug("%s[%x] cancelled probe",
-                      type(self).__name__, id(self))
-            raise
         except ValueError as err:
             log.warning(str(err))
-            self._reset_closest(peer)
+            self.active.discard(peer)
             return
         except TransportNotConnected:
-            await self._aclose(reason="not connected")
+            return self.aclose()
-            return
         except RemoteException:
-            self._reset_closest(peer)
             return
         return await self._handle_probe_result(peer, response)
 
-    def _search_round(self):
+    async def _search_round(self):
         """
         Send up to constants.alpha (5) probes to closest active peers
         """
 
         added = 0
-        for index, peer in enumerate(self.active.keys()):
+        to_probe = list(self.active - self.contacted)
-            if index == 0:
+        to_probe.sort(key=lambda peer: self.distance(self.key))
-                log.debug("%s[%x] closest to probe: %s",
+        for peer in to_probe:
-                          type(self).__name__, id(self),
+            if added >= constants.ALPHA:
-                          peer.node_id.hex()[:8])
-            if peer in self.contacted:
-                continue
-            if len(self.running_probes) >= constants.ALPHA:
-                break
-            if index > (constants.K + len(self.running_probes)):
                 break
             origin_address = (peer.address, peer.udp_port)
+            if origin_address in self.exclude:
+                continue
             if peer.node_id == self.protocol.node_id:
                 continue
             if origin_address == (self.protocol.external_ip, self.protocol.udp_port):
                 continue
             self._schedule_probe(peer)
             added += 1
-        log.debug("%s[%x] running %d probes for key %s",
+        log.debug("running %d probes for key %s", len(self.running_probes), self.key.hex()[:8])
-                  type(self).__name__, id(self),
-                  len(self.running_probes), self.key.hex()[:8])
         if not added and not self.running_probes:
-            log.debug("%s[%x] search for %s exhausted",
+            log.debug("search for %s exhausted", self.key.hex()[:8])
-                      type(self).__name__, id(self),
-                      self.key.hex()[:8])
             self.search_exhausted()
 
     def _schedule_probe(self, peer: 'KademliaPeer'):
@@ -204,24 +206,33 @@ class IterativeFinder(AsyncIterator):
         t = self.loop.create_task(self._send_probe(peer))
 
         def callback(_):
-            self.running_probes.pop(peer, None)
+            self.running_probes.difference_update({
-            if self.running:
+                probe for probe in self.running_probes if probe.done() or probe == t
-                self._search_round()
+            })
+            if not self.running_probes:
+                self.tasks.append(self.loop.create_task(self._search_task(0.0)))
 
         t.add_done_callback(callback)
-        self.running_probes[peer] = t
+        self.running_probes.add(t)
 
-    def _log_state(self, reason="?"):
+    async def _search_task(self, delay: typing.Optional[float] = constants.ITERATIVE_LOOKUP_DELAY):
-        log.debug("%s[%x] [%s] %s: %i active nodes %i contacted %i produced %i queued",
+        try:
-                  type(self).__name__, id(self), self.key.hex()[:8],
+            if self.running:
-                  reason, len(self.active), len(self.contacted),
+                await self._search_round()
-                  self.iteration_count, self.iteration_queue.qsize())
+            if self.running:
+                self.delayed_calls.append(self.loop.call_later(delay, self._search))
+        except (asyncio.CancelledError, StopAsyncIteration, TransportNotConnected):
+            if self.running:
+                self.loop.call_soon(self.aclose)
+
+    def _search(self):
+        self.tasks.append(self.loop.create_task(self._search_task()))
 
     def __aiter__(self):
         if self.running:
             raise Exception("already running")
         self.running = True
-        self.loop.call_soon(self._search_round)
+        self._search()
         return self
 
     async def __anext__(self) -> typing.List['KademliaPeer']:
@@ -234,37 +245,28 @@ class IterativeFinder(AsyncIterator):
                 raise StopAsyncIteration
             self.iteration_count += 1
             return result
-        except asyncio.CancelledError:
+        except (asyncio.CancelledError, StopAsyncIteration):
-            await self._aclose(reason="cancelled")
+            self.loop.call_soon(self.aclose)
-            raise
-        except StopAsyncIteration:
-            await self._aclose(reason="no more results")
             raise
 
-    async def _aclose(self, reason="?"):
+    def aclose(self):
-        log.debug("%s[%x] [%s] shutdown because %s: %i active nodes %i contacted %i produced %i queued",
-                  type(self).__name__, id(self), self.key.hex()[:8],
-                  reason, len(self.active), len(self.contacted),
-                  self.iteration_count, self.iteration_queue.qsize())
         self.running = False
         self.iteration_queue.put_nowait(None)
-        for task in chain(self.tasks, self.running_probes.values()):
+        for task in chain(self.tasks, self.running_probes, self.delayed_calls):
             task.cancel()
         self.tasks.clear()
         self.running_probes.clear()
+        self.delayed_calls.clear()
 
-    async def aclose(self):
-        if self.running:
-            await self._aclose(reason="aclose")
-        log.debug("%s[%x] [%s] async close completed",
-                  type(self).__name__, id(self), self.key.hex()[:8])
 
 class IterativeNodeFinder(IterativeFinder):
-    def __init__(self, loop: asyncio.AbstractEventLoop,
+    def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager',
-                 protocol: 'KademliaProtocol', key: bytes,
+                 routing_table: 'TreeRoutingTable', protocol: 'KademliaProtocol', key: bytes,
-                 max_results: typing.Optional[int] = constants.K,
+                 bottom_out_limit: typing.Optional[int] = 2, max_results: typing.Optional[int] = constants.K,
+                 exclude: typing.Optional[typing.List[typing.Tuple[str, int]]] = None,
                  shortlist: typing.Optional[typing.List['KademliaPeer']] = None):
-        super().__init__(loop, protocol, key, max_results, shortlist)
+        super().__init__(loop, peer_manager, routing_table, protocol, key, bottom_out_limit, max_results, exclude,
+                         shortlist)
         self.yielded_peers: typing.Set['KademliaPeer'] = set()
 
     async def send_probe(self, peer: 'KademliaPeer') -> FindNodeResponse:
@@ -274,14 +276,14 @@ class IterativeNodeFinder(IterativeFinder):
         return FindNodeResponse(self.key, response)
 
     def search_exhausted(self):
-        self.put_result(self.active.keys(), finish=True)
+        self.put_result(self.active, finish=True)
 
     def put_result(self, from_iter: typing.Iterable['KademliaPeer'], finish=False):
         not_yet_yielded = [
             peer for peer in from_iter
             if peer not in self.yielded_peers
             and peer.node_id != self.protocol.node_id
-            and self.peer_manager.peer_is_good(peer) is True  # return only peers who answered
+            and self.peer_manager.peer_is_good(peer) is not False
         ]
         not_yet_yielded.sort(key=lambda peer: self.distance(peer.node_id))
         to_yield = not_yet_yielded[:max(constants.K, self.max_results)]
@@ -296,15 +298,27 @@ class IterativeNodeFinder(IterativeFinder):
 
         if found:
             log.debug("found")
-            return self.put_result(self.active.keys(), finish=True)
+            return self.put_result(self.active, finish=True)
+        if self.prev_closest_peer and self.closest_peer and not self._is_closer(self.prev_closest_peer):
+            # log.info("improving, %i %i %i %i %i", len(self.shortlist), len(self.active), len(self.contacted),
+            #          self.bottom_out_count, self.iteration_count)
+            self.bottom_out_count = 0
+        elif self.prev_closest_peer and self.closest_peer:
+            self.bottom_out_count += 1
+            log.info("bottom out %i %i %i", len(self.active), len(self.contacted), self.bottom_out_count)
+        if self.bottom_out_count >= self.bottom_out_limit or self.iteration_count >= self.bottom_out_limit:
+            log.info("limit hit")
+            self.put_result(self.active, True)
 
 
 class IterativeValueFinder(IterativeFinder):
-    def __init__(self, loop: asyncio.AbstractEventLoop,
+    def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager',
-                 protocol: 'KademliaProtocol', key: bytes,
+                 routing_table: 'TreeRoutingTable', protocol: 'KademliaProtocol', key: bytes,
-                 max_results: typing.Optional[int] = constants.K,
+                 bottom_out_limit: typing.Optional[int] = 2, max_results: typing.Optional[int] = constants.K,
+                 exclude: typing.Optional[typing.List[typing.Tuple[str, int]]] = None,
                  shortlist: typing.Optional[typing.List['KademliaPeer']] = None):
-        super().__init__(loop, protocol, key, max_results, shortlist)
+        super().__init__(loop, peer_manager, routing_table, protocol, key, bottom_out_limit, max_results, exclude,
+                         shortlist)
         self.blob_peers: typing.Set['KademliaPeer'] = set()
         # this tracks the index of the most recent page we requested from each peer
         self.peer_pages: typing.DefaultDict['KademliaPeer', int] = defaultdict(int)
@@ -323,7 +337,7 @@ class IterativeValueFinder(IterativeFinder):
         decoded_peers = set()
         for compact_addr in parsed.found_compact_addresses:
             try:
-                decoded_peers.add(decode_tcp_peer_from_compact_address(compact_addr))
+                decoded_peers.add(self.peer_manager.decode_tcp_peer_from_compact_address(compact_addr))
             except ValueError:
                 log.warning("misbehaving peer %s:%i returned invalid peer for blob",
                             peer.address, peer.udp_port)
@@ -345,15 +359,26 @@ class IterativeValueFinder(IterativeFinder):
 
     def check_result_ready(self, response: FindValueResponse):
         if response.found:
-            blob_peers = [decode_tcp_peer_from_compact_address(compact_addr)
+            blob_peers = [self.peer_manager.decode_tcp_peer_from_compact_address(compact_addr)
                           for compact_addr in response.found_compact_addresses]
             to_yield = []
+            self.bottom_out_count = 0
             for blob_peer in blob_peers:
                 if blob_peer not in self.blob_peers:
                     self.blob_peers.add(blob_peer)
                     to_yield.append(blob_peer)
             if to_yield:
+                # log.info("found %i new peers for blob", len(to_yield))
                 self.iteration_queue.put_nowait(to_yield)
+                # if self.max_results and len(self.blob_peers) >= self.max_results:
+                #     log.info("enough blob peers found")
+                #     if not self.finished.is_set():
+                #         self.finished.set()
+        elif self.prev_closest_peer and self.closest_peer:
+            self.bottom_out_count += 1
+            if self.bottom_out_count >= self.bottom_out_limit:
+                log.info("blob peer search bottomed out")
+                self.iteration_queue.put_nowait(None)
 
     def get_initial_result(self) -> typing.List['KademliaPeer']:
         if self.protocol.data_store.has_peers_for_blob(self.key):

lbry/dht/protocol/protocol.py

@@ -218,10 +218,6 @@ class PingQueue:
     def running(self):
         return self._running
 
-    @property
-    def busy(self):
-        return self._running and (any(self._running_pings) or any(self._pending_contacts))
-
     def enqueue_maybe_ping(self, *peers: 'KademliaPeer', delay: typing.Optional[float] = None):
         delay = delay if delay is not None else self._default_delay
         now = self._loop.time()
@@ -233,7 +229,7 @@ class PingQueue:
         async def ping_task():
             try:
                 if self._protocol.peer_manager.peer_is_good(peer):
-                    if not self._protocol.routing_table.get_peer(peer.node_id):
+                    if peer not in self._protocol.routing_table.get_peers():
                         self._protocol.add_peer(peer)
                     return
                 await self._protocol.get_rpc_peer(peer).ping()
@@ -253,7 +249,7 @@ class PingQueue:
                     del self._pending_contacts[peer]
                     self.maybe_ping(peer)
                     break
-            await asyncio.sleep(1)
+            await asyncio.sleep(1, loop=self._loop)
 
     def start(self):
         assert not self._running
@@ -298,7 +294,7 @@ class KademliaProtocol(DatagramProtocol):
 
     def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager', node_id: bytes, external_ip: str,
                  udp_port: int, peer_port: int, rpc_timeout: float = constants.RPC_TIMEOUT,
-                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX, is_boostrap_node: bool = False):
+                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX):
         self.peer_manager = peer_manager
         self.loop = loop
         self.node_id = node_id
@@ -313,16 +309,15 @@ class KademliaProtocol(DatagramProtocol):
         self.transport: DatagramTransport = None
         self.old_token_secret = constants.generate_id()
         self.token_secret = constants.generate_id()
-        self.routing_table = TreeRoutingTable(
+        self.routing_table = TreeRoutingTable(self.loop, self.peer_manager, self.node_id, split_buckets_under_index)
-            self.loop, self.peer_manager, self.node_id, split_buckets_under_index, is_bootstrap_node=is_boostrap_node)
         self.data_store = DictDataStore(self.loop, self.peer_manager)
         self.ping_queue = PingQueue(self.loop, self)
         self.node_rpc = KademliaRPC(self, self.loop, self.peer_port)
         self.rpc_timeout = rpc_timeout
-        self._split_lock = asyncio.Lock()
+        self._split_lock = asyncio.Lock(loop=self.loop)
         self._to_remove: typing.Set['KademliaPeer'] = set()
         self._to_add: typing.Set['KademliaPeer'] = set()
-        self._wakeup_routing_task = asyncio.Event()
+        self._wakeup_routing_task = asyncio.Event(loop=self.loop)
         self.maintaing_routing_task: typing.Optional[asyncio.Task] = None
 
     @functools.lru_cache(128)
@@ -361,10 +356,72 @@ class KademliaProtocol(DatagramProtocol):
         return args, {}
 
     async def _add_peer(self, peer: 'KademliaPeer'):
-        async def probe(some_peer: 'KademliaPeer'):
+        if not peer.node_id:
-            rpc_peer = self.get_rpc_peer(some_peer)
+            log.warning("Tried adding a peer with no node id!")
-            await rpc_peer.ping()
+            return False
-        return await self.routing_table.add_peer(peer, probe)
+        for my_peer in self.routing_table.get_peers():
+            if (my_peer.address, my_peer.udp_port) == (peer.address, peer.udp_port) and my_peer.node_id != peer.node_id:
+                self.routing_table.remove_peer(my_peer)
+                self.routing_table.join_buckets()
+        bucket_index = self.routing_table.kbucket_index(peer.node_id)
+        if self.routing_table.buckets[bucket_index].add_peer(peer):
+            return True
+
+        # The bucket is full; see if it can be split (by checking if its range includes the host node's node_id)
+        if self.routing_table.should_split(bucket_index, peer.node_id):
+            self.routing_table.split_bucket(bucket_index)
+            # Retry the insertion attempt
+            result = await self._add_peer(peer)
+            self.routing_table.join_buckets()
+            return result
+        else:
+            # We can't split the k-bucket
+            #
+            # The 13 page kademlia paper specifies that the least recently contacted node in the bucket
+            # shall be pinged. If it fails to reply it is replaced with the new contact. If the ping is successful
+            # the new contact is ignored and not added to the bucket (sections 2.2 and 2.4).
+            #
+            # A reasonable extension to this is BEP 0005, which extends the above:
+            #
+            #    Not all nodes that we learn about are equal. Some are "good" and some are not.
+            #    Many nodes using the DHT are able to send queries and receive responses,
+            #    but are not able to respond to queries from other nodes. It is important that
+            #    each node's routing table must contain only known good nodes. A good node is
+            #    a node has responded to one of our queries within the last 15 minutes. A node
+            #    is also good if it has ever responded to one of our queries and has sent us a
+            #    query within the last 15 minutes. After 15 minutes of inactivity, a node becomes
+            #    questionable. Nodes become bad when they fail to respond to multiple queries
+            #    in a row. Nodes that we know are good are given priority over nodes with unknown status.
+            #
+            # When there are bad or questionable nodes in the bucket, the least recent is selected for
+            # potential replacement (BEP 0005). When all nodes in the bucket are fresh, the head (least recent)
+            # contact is selected as described in section 2.2 of the kademlia paper. In both cases the new contact
+            # is ignored if the pinged node replies.
+
+            not_good_contacts = self.routing_table.buckets[bucket_index].get_bad_or_unknown_peers()
+            not_recently_replied = []
+            for my_peer in not_good_contacts:
+                last_replied = self.peer_manager.get_last_replied(my_peer.address, my_peer.udp_port)
+                if not last_replied or last_replied + 60 < self.loop.time():
+                    not_recently_replied.append(my_peer)
+            if not_recently_replied:
+                to_replace = not_recently_replied[0]
+            else:
+                to_replace = self.routing_table.buckets[bucket_index].peers[0]
+                last_replied = self.peer_manager.get_last_replied(to_replace.address, to_replace.udp_port)
+                if last_replied and last_replied + 60 > self.loop.time():
+                    return False
+            log.debug("pinging %s:%s", to_replace.address, to_replace.udp_port)
+            try:
+                to_replace_rpc = self.get_rpc_peer(to_replace)
+                await to_replace_rpc.ping()
+                return False
+            except asyncio.TimeoutError:
+                log.debug("Replacing dead contact in bucket %i: %s:%i with %s:%i ", bucket_index,
+                          to_replace.address, to_replace.udp_port, peer.address, peer.udp_port)
+                if to_replace in self.routing_table.buckets[bucket_index]:
+                    self.routing_table.buckets[bucket_index].remove_peer(to_replace)
+                return await self._add_peer(peer)
 
     def add_peer(self, peer: 'KademliaPeer'):
         if peer.node_id == self.node_id:
@@ -382,10 +439,11 @@ class KademliaProtocol(DatagramProtocol):
                 async with self._split_lock:
                     peer = self._to_remove.pop()
                     self.routing_table.remove_peer(peer)
+                    self.routing_table.join_buckets()
             while self._to_add:
                 async with self._split_lock:
                     await self._add_peer(self._to_add.pop())
-            await asyncio.gather(self._wakeup_routing_task.wait(), asyncio.sleep(.1))
+            await asyncio.gather(self._wakeup_routing_task.wait(), asyncio.sleep(.1, loop=self.loop), loop=self.loop)
             self._wakeup_routing_task.clear()
 
     def _handle_rpc(self, sender_contact: 'KademliaPeer', message: RequestDatagram):
@@ -424,8 +482,9 @@ class KademliaProtocol(DatagramProtocol):
         # This is an RPC method request
         self.received_request_metric.labels(method=request_datagram.method).inc()
         self.peer_manager.report_last_requested(address[0], address[1])
-        peer = self.routing_table.get_peer(request_datagram.node_id)
+        try:
-        if not peer:
+            peer = self.routing_table.get_peer(request_datagram.node_id)
+        except IndexError:
             try:
                 peer = make_kademlia_peer(request_datagram.node_id, address[0], address[1])
             except ValueError as err:

lbry/dht/protocol/routing_table.py

@@ -6,9 +6,7 @@ import itertools
 
 from prometheus_client import Gauge
 
-from lbry import utils
 from lbry.dht import constants
-from lbry.dht.error import RemoteException
 from lbry.dht.protocol.distance import Distance
 if typing.TYPE_CHECKING:
     from lbry.dht.peer import KademliaPeer, PeerManager
@@ -29,8 +27,7 @@ class KBucket:
         namespace="dht_node", labelnames=("amount",)
     )
 
-    def __init__(self, peer_manager: 'PeerManager', range_min: int, range_max: int,
+    def __init__(self, peer_manager: 'PeerManager', range_min: int, range_max: int, node_id: bytes):
-                 node_id: bytes, capacity: int = constants.K):
         """
         @param range_min: The lower boundary for the range in the n-bit ID
                          space covered by this k-bucket
@@ -38,12 +35,12 @@ class KBucket:
                          covered by this k-bucket
         """
         self._peer_manager = peer_manager
+        self.last_accessed = 0
         self.range_min = range_min
         self.range_max = range_max
         self.peers: typing.List['KademliaPeer'] = []
         self._node_id = node_id
         self._distance_to_self = Distance(node_id)
-        self.capacity = capacity
 
     def add_peer(self, peer: 'KademliaPeer') -> bool:
         """ Add contact to _contact list in the right order. This will move the
@@ -70,19 +67,22 @@ class KBucket:
                     self.peers.remove(local_peer)
                     self.peers.append(peer)
                     return True
-        if len(self.peers) < self.capacity:
+        if len(self.peers) < constants.K:
             self.peers.append(peer)
             self.peer_in_routing_table_metric.labels("global").inc()
-            bits_colliding = utils.get_colliding_prefix_bits(peer.node_id, self._node_id)
+            if peer.node_id[0] == self._node_id[0]:
-            self.peer_with_x_bit_colliding_metric.labels(amount=bits_colliding).inc()
+                bits_colliding = 8 - (peer.node_id[1] ^ self._node_id[1]).bit_length()
+                self.peer_with_x_bit_colliding_metric.labels(amount=(bits_colliding + 8)).inc()
             return True
         else:
             return False
+            # raise BucketFull("No space in bucket to insert contact")
 
     def get_peer(self, node_id: bytes) -> 'KademliaPeer':
         for peer in self.peers:
             if peer.node_id == node_id:
                 return peer
+        raise IndexError(node_id)
 
     def get_peers(self, count=-1, exclude_contact=None, sort_distance_to=None) -> typing.List['KademliaPeer']:
         """ Returns a list containing up to the first count number of contacts
@@ -140,8 +140,9 @@ class KBucket:
     def remove_peer(self, peer: 'KademliaPeer') -> None:
         self.peers.remove(peer)
         self.peer_in_routing_table_metric.labels("global").dec()
-        bits_colliding = utils.get_colliding_prefix_bits(peer.node_id, self._node_id)
+        if peer.node_id[0] == self._node_id[0]:
-        self.peer_with_x_bit_colliding_metric.labels(amount=bits_colliding).dec()
+            bits_colliding = 8 - (peer.node_id[1] ^ self._node_id[1]).bit_length()
+            self.peer_with_x_bit_colliding_metric.labels(amount=(bits_colliding + 8)).dec()
 
     def key_in_range(self, key: bytes) -> bool:
         """ Tests whether the specified key (i.e. node ID) is in the range
@@ -179,13 +180,6 @@ class TreeRoutingTable:
     version of the Kademlia paper, in section 2.4. It does, however, use the
     ping RPC-based k-bucket eviction algorithm described in section 2.2 of
     that paper.
-
-    BOOTSTRAP MODE: if set to True, we always add all peers. This is so a
-    bootstrap node does not get a bias towards its own node id and replies are
-    the best it can provide (joining peer knows its neighbors immediately).
-    Over time, this will need to be optimized so we use the disk as holding
-    everything in memory won't be feasible anymore.
-    See: https://github.com/bittorrent/bootstrap-dht
     """
     bucket_in_routing_table_metric = Gauge(
         "buckets_in_routing_table", "Number of buckets on routing table", namespace="dht_node",
@@ -193,22 +187,21 @@ class TreeRoutingTable:
     )
 
     def __init__(self, loop: asyncio.AbstractEventLoop, peer_manager: 'PeerManager', parent_node_id: bytes,
-                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX, is_bootstrap_node: bool = False):
+                 split_buckets_under_index: int = constants.SPLIT_BUCKETS_UNDER_INDEX):
         self._loop = loop
         self._peer_manager = peer_manager
         self._parent_node_id = parent_node_id
         self._split_buckets_under_index = split_buckets_under_index
         self.buckets: typing.List[KBucket] = [
             KBucket(
-                self._peer_manager, range_min=0, range_max=2 ** constants.HASH_BITS, node_id=self._parent_node_id,
+                self._peer_manager, range_min=0, range_max=2 ** constants.HASH_BITS, node_id=self._parent_node_id
-                capacity=1 << 32 if is_bootstrap_node else constants.K
             )
         ]
 
     def get_peers(self) -> typing.List['KademliaPeer']:
         return list(itertools.chain.from_iterable(map(lambda bucket: bucket.peers, self.buckets)))
 
-    def _should_split(self, bucket_index: int, to_add: bytes) -> bool:
+    def should_split(self, bucket_index: int, to_add: bytes) -> bool:
         #  https://stackoverflow.com/questions/32129978/highly-unbalanced-kademlia-routing-table/32187456#32187456
         if bucket_index < self._split_buckets_under_index:
             return True
@@ -233,32 +226,39 @@ class TreeRoutingTable:
         return []
 
     def get_peer(self, contact_id: bytes) -> 'KademliaPeer':
-        return self.buckets[self._kbucket_index(contact_id)].get_peer(contact_id)
+        """
+        @raise IndexError: No contact with the specified contact ID is known
+                           by this node
+        """
+        return self.buckets[self.kbucket_index(contact_id)].get_peer(contact_id)
 
     def get_refresh_list(self, start_index: int = 0, force: bool = False) -> typing.List[bytes]:
+        bucket_index = start_index
         refresh_ids = []
-        for offset, _ in enumerate(self.buckets[start_index:]):
+        now = int(self._loop.time())
-            refresh_ids.append(self._midpoint_id_in_bucket_range(start_index + offset))
+        for bucket in self.buckets[start_index:]:
-        # if we have 3 or fewer populated buckets get two random ids in the range of each to try and
+            if force or now - bucket.last_accessed >= constants.REFRESH_INTERVAL:
-        # populate/split the buckets further
+                to_search = self.midpoint_id_in_bucket_range(bucket_index)
-        buckets_with_contacts = self.buckets_with_contacts()
+                refresh_ids.append(to_search)
-        if buckets_with_contacts <= 3:
+            bucket_index += 1
-            for i in range(buckets_with_contacts):
-                refresh_ids.append(self._random_id_in_bucket_range(i))
-                refresh_ids.append(self._random_id_in_bucket_range(i))
         return refresh_ids
 
     def remove_peer(self, peer: 'KademliaPeer') -> None:
         if not peer.node_id:
             return
-        bucket_index = self._kbucket_index(peer.node_id)
+        bucket_index = self.kbucket_index(peer.node_id)
         try:
             self.buckets[bucket_index].remove_peer(peer)
-            self._join_buckets()
         except ValueError:
             return
 
-    def _kbucket_index(self, key: bytes) -> int:
+    def touch_kbucket(self, key: bytes) -> None:
+        self.touch_kbucket_by_index(self.kbucket_index(key))
+
+    def touch_kbucket_by_index(self, bucket_index: int):
+        self.buckets[bucket_index].last_accessed = int(self._loop.time())
+
+    def kbucket_index(self, key: bytes) -> int:
         i = 0
         for bucket in self.buckets:
             if bucket.key_in_range(key):
@@ -267,19 +267,19 @@ class TreeRoutingTable:
                 i += 1
         return i
 
-    def _random_id_in_bucket_range(self, bucket_index: int) -> bytes:
+    def random_id_in_bucket_range(self, bucket_index: int) -> bytes:
         random_id = int(random.randrange(self.buckets[bucket_index].range_min, self.buckets[bucket_index].range_max))
         return Distance(
             self._parent_node_id
         )(random_id.to_bytes(constants.HASH_LENGTH, 'big')).to_bytes(constants.HASH_LENGTH, 'big')
 
-    def _midpoint_id_in_bucket_range(self, bucket_index: int) -> bytes:
+    def midpoint_id_in_bucket_range(self, bucket_index: int) -> bytes:
         half = int((self.buckets[bucket_index].range_max - self.buckets[bucket_index].range_min) // 2)
         return Distance(self._parent_node_id)(
             int(self.buckets[bucket_index].range_min + half).to_bytes(constants.HASH_LENGTH, 'big')
         ).to_bytes(constants.HASH_LENGTH, 'big')
 
-    def _split_bucket(self, old_bucket_index: int) -> None:
+    def split_bucket(self, old_bucket_index: int) -> None:
         """ Splits the specified k-bucket into two new buckets which together
         cover the same range in the key/ID space
 
@@ -304,7 +304,7 @@ class TreeRoutingTable:
             old_bucket.remove_peer(contact)
         self.bucket_in_routing_table_metric.labels("global").set(len(self.buckets))
 
-    def _join_buckets(self):
+    def join_buckets(self):
         if len(self.buckets) == 1:
             return
         to_pop = [i for i, bucket in enumerate(self.buckets) if len(bucket) == 0]
@@ -327,7 +327,14 @@ class TreeRoutingTable:
             self.buckets[bucket_index_to_pop + 1].range_min = bucket.range_min
         self.buckets.remove(bucket)
         self.bucket_in_routing_table_metric.labels("global").set(len(self.buckets))
-        return self._join_buckets()
+        return self.join_buckets()
+
+    def contact_in_routing_table(self, address_tuple: typing.Tuple[str, int]) -> bool:
+        for bucket in self.buckets:
+            for contact in bucket.get_peers(sort_distance_to=False):
+                if address_tuple[0] == contact.address and address_tuple[1] == contact.udp_port:
+                    return True
+        return False
 
     def buckets_with_contacts(self) -> int:
         count = 0
@@ -335,70 +342,3 @@ class TreeRoutingTable:
             if len(bucket) > 0:
                 count += 1
         return count
-
-    async def add_peer(self, peer: 'KademliaPeer', probe: typing.Callable[['KademliaPeer'], typing.Awaitable]):
-        if not peer.node_id:
-            log.warning("Tried adding a peer with no node id!")
-            return False
-        for my_peer in self.get_peers():
-            if (my_peer.address, my_peer.udp_port) == (peer.address, peer.udp_port) and my_peer.node_id != peer.node_id:
-                self.remove_peer(my_peer)
-                self._join_buckets()
-        bucket_index = self._kbucket_index(peer.node_id)
-        if self.buckets[bucket_index].add_peer(peer):
-            return True
-
-        # The bucket is full; see if it can be split (by checking if its range includes the host node's node_id)
-        if self._should_split(bucket_index, peer.node_id):
-            self._split_bucket(bucket_index)
-            # Retry the insertion attempt
-            result = await self.add_peer(peer, probe)
-            self._join_buckets()
-            return result
-        else:
-            # We can't split the k-bucket
-            #
-            # The 13 page kademlia paper specifies that the least recently contacted node in the bucket
-            # shall be pinged. If it fails to reply it is replaced with the new contact. If the ping is successful
-            # the new contact is ignored and not added to the bucket (sections 2.2 and 2.4).
-            #
-            # A reasonable extension to this is BEP 0005, which extends the above:
-            #
-            #    Not all nodes that we learn about are equal. Some are "good" and some are not.
-            #    Many nodes using the DHT are able to send queries and receive responses,
-            #    but are not able to respond to queries from other nodes. It is important that
-            #    each node's routing table must contain only known good nodes. A good node is
-            #    a node has responded to one of our queries within the last 15 minutes. A node
-            #    is also good if it has ever responded to one of our queries and has sent us a
-            #    query within the last 15 minutes. After 15 minutes of inactivity, a node becomes
-            #    questionable. Nodes become bad when they fail to respond to multiple queries
-            #    in a row. Nodes that we know are good are given priority over nodes with unknown status.
-            #
-            # When there are bad or questionable nodes in the bucket, the least recent is selected for
-            # potential replacement (BEP 0005). When all nodes in the bucket are fresh, the head (least recent)
-            # contact is selected as described in section 2.2 of the kademlia paper. In both cases the new contact
-            # is ignored if the pinged node replies.
-
-            not_good_contacts = self.buckets[bucket_index].get_bad_or_unknown_peers()
-            not_recently_replied = []
-            for my_peer in not_good_contacts:
-                last_replied = self._peer_manager.get_last_replied(my_peer.address, my_peer.udp_port)
-                if not last_replied or last_replied + 60 < self._loop.time():
-                    not_recently_replied.append(my_peer)
-            if not_recently_replied:
-                to_replace = not_recently_replied[0]
-            else:
-                to_replace = self.buckets[bucket_index].peers[0]
-                last_replied = self._peer_manager.get_last_replied(to_replace.address, to_replace.udp_port)
-                if last_replied and last_replied + 60 > self._loop.time():
-                    return False
-            log.debug("pinging %s:%s", to_replace.address, to_replace.udp_port)
-            try:
-                await probe(to_replace)
-                return False
-            except (asyncio.TimeoutError, RemoteException):
-                log.debug("Replacing dead contact in bucket %i: %s:%i with %s:%i ", bucket_index,
-                          to_replace.address, to_replace.udp_port, peer.address, peer.udp_port)
-                if to_replace in self.buckets[bucket_index]:
-                    self.buckets[bucket_index].remove_peer(to_replace)
-                return await self.add_peer(peer, probe)

lbry/extras/daemon/client.py

@@ -1,5 +1,5 @@
-from lbry.extras.cli import execute_command
 from lbry.conf import Config
+from lbry.extras.cli import execute_command
 
 
 def daemon_rpc(conf: Config, method: str, **kwargs):

lbry/extras/daemon/component.py

@@ -37,7 +37,7 @@ class Component(metaclass=ComponentType):
     def running(self):
         return self._running
 
-    async def get_status(self): # pylint: disable=no-self-use
+    async def get_status(self):
         return
 
     async def start(self):

lbry/extras/daemon/componentmanager.py

@@ -42,7 +42,7 @@ class ComponentManager:
         self.analytics_manager = analytics_manager
         self.component_classes = {}
         self.components = set()
-        self.started = asyncio.Event()
+        self.started = asyncio.Event(loop=self.loop)
         self.peer_manager = peer_manager or PeerManager(asyncio.get_event_loop_policy().get_event_loop())
 
         for component_name, component_class in self.default_component_classes.items():
@@ -118,7 +118,7 @@ class ComponentManager:
                 component._setup() for component in stage if not component.running
             ]
             if needing_start:
-                await asyncio.wait(map(asyncio.create_task, needing_start))
+                await asyncio.wait(needing_start)
         self.started.set()
 
     async def stop(self):
@@ -131,7 +131,7 @@ class ComponentManager:
                 component._stop() for component in stage if component.running
             ]
             if needing_stop:
-                await asyncio.wait(map(asyncio.create_task, needing_stop))
+                await asyncio.wait(needing_stop)
 
     def all_components_running(self, *component_names):
         """

lbry/extras/daemon/components.py

@@ -27,8 +27,10 @@ from lbry.extras.daemon.storage import SQLiteStorage
 from lbry.torrent.torrent_manager import TorrentManager
 from lbry.wallet import WalletManager
 from lbry.wallet.usage_payment import WalletServerPayer
-from lbry.torrent.tracker import TrackerClient
+try:
-from lbry.torrent.session import TorrentSession
+    from lbry.torrent.session import TorrentSession
+except ImportError:
+    TorrentSession = None
 
 log = logging.getLogger(__name__)
 
@@ -46,7 +48,6 @@ BACKGROUND_DOWNLOADER_COMPONENT = "background_downloader"
 PEER_PROTOCOL_SERVER_COMPONENT = "peer_protocol_server"
 UPNP_COMPONENT = "upnp"
 EXCHANGE_RATE_MANAGER_COMPONENT = "exchange_rate_manager"
-TRACKER_ANNOUNCER_COMPONENT = "tracker_announcer_component"
 LIBTORRENT_COMPONENT = "libtorrent_component"
 
 
@@ -293,7 +294,6 @@ class DHTComponent(Component):
             peer_port=self.external_peer_port,
             rpc_timeout=self.conf.node_rpc_timeout,
             split_buckets_under_index=self.conf.split_buckets_under_index,
-            is_bootstrap_node=self.conf.is_bootstrap_node,
             storage=storage
         )
         self.dht_node.start(self.conf.network_interface, self.conf.known_dht_nodes)
@@ -357,6 +357,10 @@ class FileManagerComponent(Component):
         wallet = self.component_manager.get_component(WALLET_COMPONENT)
         node = self.component_manager.get_component(DHT_COMPONENT) \
             if self.component_manager.has_component(DHT_COMPONENT) else None
+        try:
+            torrent = self.component_manager.get_component(LIBTORRENT_COMPONENT) if TorrentSession else None
+        except NameError:
+            torrent = None
         log.info('Starting the file manager')
         loop = asyncio.get_event_loop()
         self.file_manager = FileManager(
@@ -365,8 +369,7 @@ class FileManagerComponent(Component):
         self.file_manager.source_managers['stream'] = StreamManager(
             loop, self.conf, blob_manager, wallet, storage, node,
         )
-        if self.component_manager.has_component(LIBTORRENT_COMPONENT):
+        if TorrentSession and LIBTORRENT_COMPONENT not in self.conf.components_to_skip:
-            torrent = self.component_manager.get_component(LIBTORRENT_COMPONENT)
             self.file_manager.source_managers['torrent'] = TorrentManager(
                 loop, self.conf, torrent, storage, self.component_manager.analytics_manager
             )
@@ -374,11 +377,10 @@ class FileManagerComponent(Component):
         log.info('Done setting up file manager')
 
     async def stop(self):
-        await self.file_manager.stop()
+        self.file_manager.stop()
 
 
 class BackgroundDownloaderComponent(Component):
-    MIN_PREFIX_COLLIDING_BITS = 8
     component_name = BACKGROUND_DOWNLOADER_COMPONENT
     depends_on = [DATABASE_COMPONENT, BLOB_COMPONENT, DISK_SPACE_COMPONENT]
 
@@ -410,18 +412,12 @@ class BackgroundDownloaderComponent(Component):
         while True:
             self.space_available = await self.space_manager.get_free_space_mb(True)
             if not self.is_busy and self.space_available > 10:
-                self._download_next_close_blob_hash()
+                blob_hash = next((key.hex() for key in self.dht_node.stored_blob_hashes if
+                                 key.hex() not in self.blob_manager.completed_blob_hashes), None)
+                if blob_hash:
+                    self.ongoing_download = asyncio.create_task(self.background_downloader.download_blobs(blob_hash))
             await asyncio.sleep(self.download_loop_delay_seconds)
 
-    def _download_next_close_blob_hash(self):
-        node_id = self.dht_node.protocol.node_id
-        for blob_hash in self.dht_node.stored_blob_hashes:
-            if blob_hash.hex() in self.blob_manager.completed_blob_hashes:
-                continue
-            if utils.get_colliding_prefix_bits(node_id, blob_hash) >= self.MIN_PREFIX_COLLIDING_BITS:
-                self.ongoing_download = asyncio.create_task(self.background_downloader.download_blobs(blob_hash.hex()))
-                return
-
     async def start(self):
         self.space_manager: DiskSpaceManager = self.component_manager.get_component(DISK_SPACE_COMPONENT)
         if not self.component_manager.has_component(DHT_COMPONENT):
@@ -495,8 +491,9 @@ class TorrentComponent(Component):
         }
 
     async def start(self):
-        self.torrent_session = TorrentSession(asyncio.get_event_loop(), None)
+        if TorrentSession:
-        await self.torrent_session.bind()  # TODO: specify host/port
+            self.torrent_session = TorrentSession(asyncio.get_event_loop(), None)
+            await self.torrent_session.bind()  # TODO: specify host/port
 
     async def stop(self):
         if self.torrent_session:
@@ -551,7 +548,7 @@ class UPnPComponent(Component):
         while True:
             if now:
                 await self._maintain_redirects()
-            await asyncio.sleep(360)
+            await asyncio.sleep(360, loop=self.component_manager.loop)
 
     async def _maintain_redirects(self):
         # setup the gateway if necessary
@@ -560,6 +557,8 @@ class UPnPComponent(Component):
                 self.upnp = await UPnP.discover(loop=self.component_manager.loop)
                 log.info("found upnp gateway: %s", self.upnp.gateway.manufacturer_string)
             except Exception as err:
+                if isinstance(err, asyncio.CancelledError):  # TODO: remove when updated to 3.8
+                    raise
                 log.warning("upnp discovery failed: %s", err)
                 self.upnp = None
 
@@ -671,7 +670,7 @@ class UPnPComponent(Component):
             log.info("Removing upnp redirects: %s", self.upnp_redirects)
             await asyncio.wait([
                 self.upnp.delete_port_mapping(port, protocol) for protocol, port in self.upnp_redirects.items()
-            ])
+            ], loop=self.component_manager.loop)
         if self._maintain_redirects_task and not self._maintain_redirects_task.done():
             self._maintain_redirects_task.cancel()
 
@@ -702,49 +701,3 @@ class ExchangeRateManagerComponent(Component):
 
     async def stop(self):
         self.exchange_rate_manager.stop()
-
-
-class TrackerAnnouncerComponent(Component):
-    component_name = TRACKER_ANNOUNCER_COMPONENT
-    depends_on = [FILE_MANAGER_COMPONENT]
-
-    def __init__(self, component_manager):
-        super().__init__(component_manager)
-        self.file_manager = None
-        self.announce_task = None
-        self.tracker_client: typing.Optional[TrackerClient] = None
-
-    @property
-    def component(self):
-        return self.tracker_client
-
-    @property
-    def running(self):
-        return self._running and self.announce_task and not self.announce_task.done()
-
-    async def announce_forever(self):
-        while True:
-            sleep_seconds = 60.0
-            announce_sd_hashes = []
-            for file in self.file_manager.get_filtered():
-                if not file.downloader:
-                    continue
-                announce_sd_hashes.append(bytes.fromhex(file.sd_hash))
-            await self.tracker_client.announce_many(*announce_sd_hashes)
-            await asyncio.sleep(sleep_seconds)
-
-    async def start(self):
-        node = self.component_manager.get_component(DHT_COMPONENT) \
-            if self.component_manager.has_component(DHT_COMPONENT) else None
-        node_id = node.protocol.node_id if node else None
-        self.tracker_client = TrackerClient(node_id, self.conf.tcp_port, lambda: self.conf.tracker_servers)
-        await self.tracker_client.start()
-        self.file_manager = self.component_manager.get_component(FILE_MANAGER_COMPONENT)
-        self.announce_task = asyncio.create_task(self.announce_forever())
-
-    async def stop(self):
-        self.file_manager = None
-        if self.announce_task and not self.announce_task.done():
-            self.announce_task.cancel()
-        self.announce_task = None
-        self.tracker_client.stop()

lbry/extras/daemon/daemon.py

@@ -9,7 +9,7 @@ import inspect
 import typing
 import random
 import tracemalloc
-import itertools
+from decimal import Decimal
 from urllib.parse import urlencode, quote
 from typing import Callable, Optional, List
 from binascii import hexlify, unhexlify
@@ -28,7 +28,6 @@ from lbry.wallet import (
 from lbry.wallet.dewies import dewies_to_lbc, lbc_to_dewies, dict_values_to_lbc
 from lbry.wallet.constants import TXO_TYPES, CLAIM_TYPE_NAMES
 from lbry.wallet.bip32 import PrivateKey
-from lbry.crypto.base58 import Base58
 
 from lbry import utils
 from lbry.conf import Config, Setting, NOT_SET
@@ -38,13 +37,12 @@ from lbry.dht.peer import make_kademlia_peer
 from lbry.error import (
     DownloadSDTimeoutError, ComponentsNotStartedError, ComponentStartConditionNotMetError,
     CommandDoesNotExistError, BaseError, WalletNotFoundError, WalletAlreadyLoadedError, WalletAlreadyExistsError,
-    ConflictingInputValueError, AlreadyPurchasedError, PrivateKeyNotFoundError, InputStringIsBlankError,
+    ConflictingInputValueError, AlreadyPurchasedError, PrivateKeyNotFoundError, InputStringIsBlankError
-    InputValueError
 )
 from lbry.extras import system_info
 from lbry.extras.daemon import analytics
 from lbry.extras.daemon.components import WALLET_COMPONENT, DATABASE_COMPONENT, DHT_COMPONENT, BLOB_COMPONENT
-from lbry.extras.daemon.components import FILE_MANAGER_COMPONENT, DISK_SPACE_COMPONENT, TRACKER_ANNOUNCER_COMPONENT
+from lbry.extras.daemon.components import FILE_MANAGER_COMPONENT, DISK_SPACE_COMPONENT
 from lbry.extras.daemon.components import EXCHANGE_RATE_MANAGER_COMPONENT, UPNP_COMPONENT
 from lbry.extras.daemon.componentmanager import RequiredCondition
 from lbry.extras.daemon.componentmanager import ComponentManager
@@ -53,8 +51,9 @@ from lbry.extras.daemon.undecorated import undecorated
 from lbry.extras.daemon.security import ensure_request_allowed
 from lbry.file_analysis import VideoFileAnalyzer
 from lbry.schema.claim import Claim
-from lbry.schema.url import URL
+from lbry.schema.url import URL, normalize_name
-
+from lbry.wallet.server.db.elasticsearch.constants import RANGE_FIELDS, REPLACEMENTS
+MY_RANGE_FIELDS = RANGE_FIELDS - {"limit_claims_per_channel"}
 
 if typing.TYPE_CHECKING:
     from lbry.blob.blob_manager import BlobManager
@@ -67,29 +66,6 @@ if typing.TYPE_CHECKING:
 
 log = logging.getLogger(__name__)
 
-RANGE_FIELDS = {
-    'height', 'creation_height', 'activation_height', 'expiration_height',
-    'timestamp', 'creation_timestamp', 'duration', 'release_time', 'fee_amount',
-    'tx_position', 'repost_count', 'limit_claims_per_channel',
-    'amount', 'effective_amount', 'support_amount',
-    'trending_score', 'censor_type', 'tx_num'
-}
-MY_RANGE_FIELDS = RANGE_FIELDS - {"limit_claims_per_channel"}
-REPLACEMENTS = {
-    'claim_name': 'normalized_name',
-    'name': 'normalized_name',
-    'txid': 'tx_id',
-    'nout': 'tx_nout',
-    'trending_group': 'trending_score',
-    'trending_mixed': 'trending_score',
-    'trending_global': 'trending_score',
-    'trending_local': 'trending_score',
-    'reposted': 'repost_count',
-    'stream_types': 'stream_type',
-    'media_types': 'media_type',
-    'valid_channel_signature': 'is_signature_valid'
-}
-
 
 def is_transactional_function(name):
     for action in ('create', 'update', 'abandon', 'send', 'fund'):
@@ -195,6 +171,61 @@ def paginate_list(items: List, page: Optional[int], page_size: Optional[int]):
     }
 
 
+def fix_kwargs_for_hub(**kwargs):
+    repeated_fields = {"media_type", "stream_type", "claim_type"}
+    value_fields = {"tx_nout", "has_source", "is_signature_valid"}
+    opcodes = {'=': 0, '<=': 1, '>=': 2, '<': 3, '>': 4}
+    for key, value in list(kwargs.items()):
+        if value in (None, [], False):
+            kwargs.pop(key)
+            continue
+        if key in REPLACEMENTS:
+            kwargs[REPLACEMENTS[key]] = kwargs.pop(key)
+            key = REPLACEMENTS[key]
+
+        if key == "normalized_name":
+            kwargs[key] = normalize_name(value)
+        if key == "limit_claims_per_channel":
+            value = kwargs.pop("limit_claims_per_channel") or 0
+            if value > 0:
+                kwargs["limit_claims_per_channel"] = value
+        elif key == "invalid_channel_signature":
+            kwargs["is_signature_valid"] = {"value": not kwargs.pop("invalid_channel_signature")}
+        elif key == "has_no_source":
+            kwargs["has_source"] = {"value": not kwargs.pop("has_no_source")}
+        elif key in value_fields:
+            kwargs[key] = {"value": value} if not isinstance(value, dict) else value
+        elif key in repeated_fields and isinstance(value, str):
+            kwargs[key] = [value]
+        elif key in ("claim_id", "channel_id"):
+            kwargs[key] = {"invert": False, "value": [kwargs[key]]}
+        elif key in ("claim_ids", "channel_ids"):
+            kwargs[key[:-1]] = {"invert": False, "value": kwargs.pop(key)}
+        elif key == "not_channel_ids":
+            kwargs["channel_id"] = {"invert": True, "value": kwargs.pop("not_channel_ids")}
+        elif key in MY_RANGE_FIELDS:
+            constraints = []
+            for val in value if isinstance(value, list) else [value]:
+                operator = '='
+                if isinstance(val, str) and val[0] in opcodes:
+                    operator_length = 2 if val[:2] in opcodes else 1
+                    operator, val = val[:operator_length], val[operator_length:]
+                val = [int(val if key != 'fee_amount' else Decimal(val)*1000)]
+                constraints.append({"op": opcodes[operator], "value": val})
+            kwargs[key] = constraints
+        elif key == 'order_by':  # TODO: remove this after removing support for old trending args from the api
+            value = value if isinstance(value, list) else [value]
+            new_value = []
+            for new_v in value:
+                migrated = new_v if new_v not in (
+                    'trending_mixed', 'trending_local', 'trending_global', 'trending_group'
+                ) else 'trending_score'
+                if migrated not in new_value:
+                    new_value.append(migrated)
+            kwargs[key] = new_value
+    return kwargs
+
+
 DHT_HAS_CONTACTS = "dht_has_contacts"
 
 
@@ -614,8 +645,7 @@ class Daemon(metaclass=JSONRPCServerType):
             content_type='application/json'
         )
 
-    @staticmethod
+    async def handle_metrics_get_request(self, request: web.Request):
-    async def handle_metrics_get_request(request: web.Request):
         try:
             return web.Response(
                 text=prom_generate_latest().decode(),
@@ -1328,65 +1358,6 @@ class Daemon(metaclass=JSONRPCServerType):
                 c.wallets += [wallet_id]
         return wallet
 
-    @requires("wallet")
-    async def jsonrpc_wallet_export(self, password=None, wallet_id=None):
-        """
-        Exports encrypted wallet data if password is supplied; otherwise plain JSON.
-
-        Wallet must be unlocked to perform this operation.
-
-        Usage:
-            wallet_export [--password=<password>] [--wallet_id=<wallet_id>]
-
-        Options:
-            --password=<password>         : (str) password to encrypt outgoing data
-            --wallet_id=<wallet_id>       : (str) wallet being exported
-
-        Returns:
-            (str) data: base64-encoded encrypted wallet, or cleartext JSON
-
-        """
-        wallet = self.wallet_manager.get_wallet_or_default(wallet_id)
-        if password is None:
-            return wallet.to_json()
-        return wallet.pack(password).decode()
-
-    @requires("wallet")
-    async def jsonrpc_wallet_import(self, data, password=None, wallet_id=None, blocking=False):
-        """
-        Import wallet data and merge accounts and preferences. Data is expected to be JSON if
-        password is not supplied.
-
-        Wallet must be unlocked to perform this operation.
-
-        Usage:
-            wallet_import (<data> | --data=<data>) [<password> | --password=<password>]
-                          [--wallet_id=<wallet_id>] [--blocking]
-
-        Options:
-            --data=<data>                 : (str) incoming wallet data
-            --password=<password>         : (str) password to decrypt incoming data
-            --wallet_id=<wallet_id>       : (str) wallet being merged into
-            --blocking                    : (bool) wait until any new accounts have merged
-
-        Returns:
-            (str) base64-encoded encrypted wallet, or cleartext JSON
-        """
-        wallet = self.wallet_manager.get_wallet_or_default(wallet_id)
-        added_accounts, merged_accounts = wallet.merge(self.wallet_manager, password, data)
-        for new_account in itertools.chain(added_accounts, merged_accounts):
-            await new_account.maybe_migrate_certificates()
-        if added_accounts and self.ledger.network.is_connected:
-            if blocking:
-                await asyncio.wait([
-                    a.ledger.subscribe_account(a) for a in added_accounts
-                ])
-            else:
-                for new_account in added_accounts:
-                    asyncio.create_task(self.ledger.subscribe_account(new_account))
-        wallet.save()
-        return await self.jsonrpc_wallet_export(password=password, wallet_id=wallet_id)
-
     @requires("wallet")
     async def jsonrpc_wallet_add(self, wallet_id):
         """
@@ -1855,7 +1826,7 @@ class Daemon(metaclass=JSONRPCServerType):
         Options:
             --to_account=<to_account>     : (str) send to this account
             --from_account=<from_account> : (str) spend from this account
-            --amount=<amount>             : (decimal) the amount to transfer lbc
+            --amount=<amount>             : (str) the amount to transfer lbc
             --everything                  : (bool) transfer everything (excluding claims), default: false.
             --outputs=<outputs>           : (int) split payment across many outputs, default: 1.
             --wallet_id=<wallet_id>       : (str) limit operation to specific wallet.
@@ -1878,48 +1849,6 @@ class Daemon(metaclass=JSONRPCServerType):
             outputs=outputs, broadcast=broadcast
         )
 
-    @requires("wallet")
-    async def jsonrpc_account_deposit(
-        self, txid, nout, redeem_script, private_key,
-        to_account=None, wallet_id=None, preview=False, blocking=False
-    ):
-        """
-        Spend a time locked transaction into your account.
-
-        Usage:
-            account_deposit <txid> <nout> <redeem_script> <private_key>
-                [<to_account> | --to_account=<to_account>]
-                [--wallet_id=<wallet_id>] [--preview] [--blocking]
-
-        Options:
-            --txid=<txid>                   : (str) id of the transaction
-            --nout=<nout>                   : (int) output number in the transaction
-            --redeem_script=<redeem_script> : (str) redeem script for output
-            --private_key=<private_key>     : (str) private key to sign transaction
-            --to_account=<to_account>       : (str) deposit to this account
-            --wallet_id=<wallet_id>         : (str) limit operation to specific wallet.
-            --preview                       : (bool) do not broadcast the transaction
-            --blocking                      : (bool) wait until tx has synced
-
-        Returns: {Transaction}
-        """
-        wallet = self.wallet_manager.get_wallet_or_default(wallet_id)
-        account = wallet.get_account_or_default(to_account)
-        other_tx = await self.wallet_manager.get_transaction(txid)
-        tx = await Transaction.spend_time_lock(
-            other_tx.outputs[nout], unhexlify(redeem_script), account
-        )
-        pk = PrivateKey.from_bytes(
-            account.ledger, Base58.decode_check(private_key)[1:-1]
-        )
-        await tx.sign([account], {pk.address: pk})
-        if not preview:
-            await self.broadcast_or_release(tx, blocking)
-            self.component_manager.loop.create_task(self.analytics_manager.send_credits_sent())
-        else:
-            await self.ledger.release_tx(tx)
-        return tx
-
     @requires(WALLET_COMPONENT)
     def jsonrpc_account_send(self, amount, addresses, account_id=None, wallet_id=None, preview=False, blocking=False):
         """
@@ -1991,9 +1920,7 @@ class Daemon(metaclass=JSONRPCServerType):
         wallet = self.wallet_manager.get_wallet_or_default(wallet_id)
         wallet_changed = False
         if data is not None:
-            added_accounts, merged_accounts = wallet.merge(self.wallet_manager, password, data)
+            added_accounts = wallet.merge(self.wallet_manager, password, data)
-            for new_account in itertools.chain(added_accounts, merged_accounts):
-                await new_account.maybe_migrate_certificates()
             if added_accounts and self.ledger.network.is_connected:
                 if blocking:
                     await asyncio.wait([
@@ -2410,7 +2337,6 @@ class Daemon(metaclass=JSONRPCServerType):
 
         Usage:
             claim_list [--claim_type=<claim_type>...] [--claim_id=<claim_id>...] [--name=<name>...] [--is_spent]
-                       [--reposted_claim_id=<reposted_claim_id>...]
                        [--channel_id=<channel_id>...] [--account_id=<account_id>] [--wallet_id=<wallet_id>]
                        [--has_source | --has_no_source] [--page=<page>] [--page_size=<page_size>]
                        [--resolve] [--order_by=<order_by>] [--no_totals] [--include_received_tips]
@@ -2421,7 +2347,6 @@ class Daemon(metaclass=JSONRPCServerType):
             --channel_id=<channel_id>  : (str or list) streams in this channel
             --name=<name>              : (str or list) claim name
             --is_spent                 : (bool) shows previous claim updates and abandons
-            --reposted_claim_id=<reposted_claim_id> : (str or list) reposted claim id
             --account_id=<account_id>  : (str) id of the account to query
             --wallet_id=<wallet_id>    : (str) restrict results to specific wallet
             --has_source               : (bool) list claims containing a source field
@@ -2619,27 +2544,42 @@ class Daemon(metaclass=JSONRPCServerType):
 
         Returns: {Paginated[Output]}
         """
-        if "claim_ids" in kwargs and not kwargs["claim_ids"]:
+        if self.ledger.config.get('use_go_hub'):
-            kwargs.pop("claim_ids")
+            host = self.ledger.network.client.server[0]
-        if {'claim_id', 'claim_ids'}.issubset(kwargs):
+            port = "50051"
-            raise ConflictingInputValueError('claim_id', 'claim_ids')
+            kwargs['new_sdk_server'] = f"{host}:{port}"
-        if kwargs.pop('valid_channel_signature', False):
+            if kwargs.get("channel"):
-            kwargs['signature_valid'] = 1
+                channel = kwargs.pop("channel")
-        if kwargs.pop('invalid_channel_signature', False):
+                channel_obj = (await self.jsonrpc_resolve(channel))[channel]
-            kwargs['signature_valid'] = 0
+                if isinstance(channel_obj, dict):
-        if 'has_no_source' in kwargs:
+                    # This happens when the channel doesn't exist
-            kwargs['has_source'] = not kwargs.pop('has_no_source')
+                    kwargs["channel_id"] = ""
-        if 'order_by' in kwargs:  # TODO: remove this after removing support for old trending args from the api
+                else:
-            value = kwargs.pop('order_by')
+                    kwargs["channel_id"] = channel_obj.claim_id
-            value = value if isinstance(value, list) else [value]
+            kwargs = fix_kwargs_for_hub(**kwargs)
-            new_value = []
+        else:
-            for new_v in value:
+            # Don't do this if using the hub server, it screws everything up
-                migrated = new_v if new_v not in (
+            if "claim_ids" in kwargs and not kwargs["claim_ids"]:
-                    'trending_mixed', 'trending_local', 'trending_global', 'trending_group'
+                kwargs.pop("claim_ids")
-                ) else 'trending_score'
+            if {'claim_id', 'claim_ids'}.issubset(kwargs):
-                if migrated not in new_value:
+                raise ConflictingInputValueError('claim_id', 'claim_ids')
-                    new_value.append(migrated)
+            if kwargs.pop('valid_channel_signature', False):
-            kwargs['order_by'] = new_value
+                kwargs['signature_valid'] = 1
+            if kwargs.pop('invalid_channel_signature', False):
+                kwargs['signature_valid'] = 0
+            if 'has_no_source' in kwargs:
+                kwargs['has_source'] = not kwargs.pop('has_no_source')
+            if 'order_by' in kwargs:  # TODO: remove this after removing support for old trending args from the api
+                value = kwargs.pop('order_by')
+                value = value if isinstance(value, list) else [value]
+                new_value = []
+                for new_v in value:
+                    migrated = new_v if new_v not in (
+                        'trending_mixed', 'trending_local', 'trending_global', 'trending_group'
+                    ) else 'trending_score'
+                    if migrated not in new_value:
+                        new_value.append(migrated)
+                kwargs['order_by'] = new_value
         page_num, page_size = abs(kwargs.pop('page', 1)), min(abs(kwargs.pop('page_size', DEFAULT_PAGE_SIZE)), 50)
         wallet = self.wallet_manager.get_wallet_or_default(kwargs.pop('wallet_id', None))
         kwargs.update({'offset': page_size * (page_num - 1), 'limit': page_size})
@@ -2775,7 +2715,7 @@ class Daemon(metaclass=JSONRPCServerType):
             wallet.save()
             await self.broadcast_or_release(tx, blocking)
             self.component_manager.loop.create_task(self.storage.save_claims([self._old_get_temp_claim_info(
-                tx, txo, claim_address, claim, name
+                tx, txo, claim_address, claim, name, dewies_to_lbc(amount)
             )]))
             self.component_manager.loop.create_task(self.analytics_manager.send_new_channel())
         else:
@@ -2934,7 +2874,7 @@ class Daemon(metaclass=JSONRPCServerType):
             wallet.save()
             await self.broadcast_or_release(tx, blocking)
             self.component_manager.loop.create_task(self.storage.save_claims([self._old_get_temp_claim_info(
-                tx, new_txo, claim_address, new_txo.claim, new_txo.claim_name
+                tx, new_txo, claim_address, new_txo.claim, new_txo.claim_name, dewies_to_lbc(amount)
             )]))
             self.component_manager.loop.create_task(self.analytics_manager.send_new_channel())
         else:
@@ -2944,21 +2884,19 @@ class Daemon(metaclass=JSONRPCServerType):
 
     @requires(WALLET_COMPONENT)
     async def jsonrpc_channel_sign(
-            self, channel_name=None, channel_id=None, hexdata=None, salt=None,
+            self, channel_name=None, channel_id=None, hexdata=None, channel_account_id=None, wallet_id=None):
-            channel_account_id=None, wallet_id=None):
         """
         Signs data using the specified channel signing key.
 
         Usage:
-            channel_sign [<channel_name> | --channel_name=<channel_name>] [<channel_id> | --channel_id=<channel_id>]
+            channel_sign [<channel_name> | --channel_name=<channel_name>]
-                         [<hexdata> | --hexdata=<hexdata>] [<salt> | --salt=<salt>]
+                         [<channel_id> | --channel_id=<channel_id>] [<hexdata> | --hexdata=<hexdata>]
                          [--channel_account_id=<channel_account_id>...] [--wallet_id=<wallet_id>]
 
         Options:
             --channel_name=<channel_name>            : (str) name of channel used to sign (or use channel id)
             --channel_id=<channel_id>                : (str) claim id of channel used to sign (or use channel name)
             --hexdata=<hexdata>                      : (str) data to sign, encoded as hexadecimal
-            --salt=<salt>                            : (str) salt to use for signing, default is to use timestamp
             --channel_account_id=<channel_account_id>: (str) one or more account ids for accounts to look in
                                                              for channel certificates, defaults to all accounts.
             --wallet_id=<wallet_id>                  : (str) restrict operation to specific wallet
@@ -2975,13 +2913,11 @@ class Daemon(metaclass=JSONRPCServerType):
         signing_channel = await self.get_channel_or_error(
             wallet, channel_account_id, channel_id, channel_name, for_signing=True
         )
-        if salt is None:
+        timestamp = str(int(time.time()))
-            salt = str(int(time.time()))
+        signature = signing_channel.sign_data(unhexlify(str(hexdata)), timestamp)
-        signature = signing_channel.sign_data(unhexlify(str(hexdata)), salt)
         return {
             'signature': signature,
-            'signing_ts': salt,  # DEPRECATED
+            'signing_ts': timestamp
-            'salt': salt,
         }
 
     @requires(WALLET_COMPONENT)
@@ -3299,17 +3235,15 @@ class Daemon(metaclass=JSONRPCServerType):
         )
 
     @requires(WALLET_COMPONENT, FILE_MANAGER_COMPONENT, BLOB_COMPONENT, DATABASE_COMPONENT)
-    async def jsonrpc_stream_repost(
+    async def jsonrpc_stream_repost(self, name, bid, claim_id, allow_duplicate_name=False, channel_id=None,
-            self, name, bid, claim_id, allow_duplicate_name=False, channel_id=None,
+                                    channel_name=None, channel_account_id=None, account_id=None, wallet_id=None,
-            channel_name=None, channel_account_id=None, account_id=None, wallet_id=None,
+                                    claim_address=None, funding_account_ids=None, preview=False, blocking=False):
-            claim_address=None, funding_account_ids=None, preview=False, blocking=False, **kwargs):
         """
             Creates a claim that references an existing stream by its claim id.
 
             Usage:
                 stream_repost (<name> | --name=<name>) (<bid> | --bid=<bid>) (<claim_id> | --claim_id=<claim_id>)
                         [--allow_duplicate_name=<allow_duplicate_name>]
-                        [--title=<title>] [--description=<description>] [--tags=<tags>...]
                         [--channel_id=<channel_id> | --channel_name=<channel_name>]
                         [--channel_account_id=<channel_account_id>...]
                         [--account_id=<account_id>] [--wallet_id=<wallet_id>]
@@ -3322,9 +3256,6 @@ class Daemon(metaclass=JSONRPCServerType):
                 --claim_id=<claim_id>          : (str) id of the claim being reposted
                 --allow_duplicate_name=<allow_duplicate_name> : (bool) create new claim even if one already exists with
                                                                        given name. default: false.
-                --title=<title>                : (str) title of the repost
-                --description=<description>    : (str) description of the repost
-                --tags=<tags>                  : (list) add repost tags
                 --channel_id=<channel_id>      : (str) claim id of the publisher channel
                 --channel_name=<channel_name>  : (str) name of the publisher channel
                 --channel_account_id=<channel_account_id>: (str) one or more account ids for accounts to look in
@@ -3359,7 +3290,6 @@ class Daemon(metaclass=JSONRPCServerType):
             raise Exception('Invalid claim id. It is expected to be a 40 characters long hexadecimal string.')
 
         claim = Claim()
-        claim.repost.update(**kwargs)
         claim.repost.reference.claim_id = claim_id
         tx = await Transaction.claim_create(
             name, claim, amount, claim_address, funding_accounts, funding_accounts[0], channel
@@ -3537,7 +3467,7 @@ class Daemon(metaclass=JSONRPCServerType):
 
             async def save_claims():
                 await self.storage.save_claims([self._old_get_temp_claim_info(
-                    tx, new_txo, claim_address, claim, name
+                    tx, new_txo, claim_address, claim, name, dewies_to_lbc(amount)
                 )])
                 if file_path is not None:
                     await self.storage.save_content_claim(file_stream.stream_hash, new_txo.id)
@@ -3684,17 +3614,15 @@ class Daemon(metaclass=JSONRPCServerType):
         )
         if len(existing_claims) != 1:
             account_ids = ', '.join(f"'{account.id}'" for account in accounts)
-            raise InputValueError(
+            # TODO: use error from lbry.error
+            raise Exception(
                 f"Can't find the stream '{claim_id}' in account(s) {account_ids}."
             )
-
         old_txo = existing_claims[0]
-        if not old_txo.claim.is_stream and not old_txo.claim.is_repost:
+        if not old_txo.claim.is_stream:
-            # in principle it should work with any type of claim, but its safer to
+            # TODO: use error from lbry.error
-            # limit it to ones we know won't be broken. in the future we can expand
+            raise Exception(
-            # this if we have a test case for e.g. channel or support claims
+                f"A claim with id '{claim_id}' was found but it is not a stream claim."
-            raise InputValueError(
-                f"A claim with id '{claim_id}' was found but it is not a stream or repost claim."
             )
 
         if bid is not None:
@@ -3725,34 +3653,28 @@ class Daemon(metaclass=JSONRPCServerType):
 
         if replace:
             claim = Claim()
-            if old_txo.claim.is_stream:
+            if old_txo.claim.stream.has_source:
-                if old_txo.claim.stream.has_source:
+                claim.stream.message.source.CopyFrom(
-                    claim.stream.message.source.CopyFrom(
+                    old_txo.claim.stream.message.source
-                        old_txo.claim.stream.message.source
+                )
-                    )
+            stream_type = old_txo.claim.stream.stream_type
-                stream_type = old_txo.claim.stream.stream_type
+            if stream_type:
-                if stream_type:
+                old_stream_type = getattr(old_txo.claim.stream.message, stream_type)
-                    old_stream_type = getattr(old_txo.claim.stream.message, stream_type)
+                new_stream_type = getattr(claim.stream.message, stream_type)
-                    new_stream_type = getattr(claim.stream.message, stream_type)
+                new_stream_type.CopyFrom(old_stream_type)
-                    new_stream_type.CopyFrom(old_stream_type)
+            claim.stream.update(file_path=file_path, **kwargs)
         else:
             claim = Claim.from_bytes(old_txo.claim.to_bytes())
-
-        if old_txo.claim.is_stream:
             claim.stream.update(file_path=file_path, **kwargs)
-        elif old_txo.claim.is_repost:
-            claim.repost.update(**kwargs)
-
         if clear_channel:
             claim.clear_signature()
         tx = await Transaction.claim_update(
             old_txo, claim, amount, claim_address, funding_accounts, funding_accounts[0],
             channel if not clear_channel else None
         )
-
         new_txo = tx.outputs[0]
         stream_hash = None
-        if not preview and old_txo.claim.is_stream:
+        if not preview:
             old_stream = self.file_manager.get_filtered(sd_hash=old_txo.claim.stream.source.sd_hash)
             old_stream = old_stream[0] if old_stream else None
             if file_path is not None:
@@ -3774,7 +3696,7 @@ class Daemon(metaclass=JSONRPCServerType):
 
             async def save_claims():
                 await self.storage.save_claims([self._old_get_temp_claim_info(
-                    tx, new_txo, claim_address, new_txo.claim, new_txo.claim_name
+                    tx, new_txo, claim_address, new_txo.claim, new_txo.claim_name, dewies_to_lbc(amount)
                 )])
                 if stream_hash:
                     await self.storage.save_content_claim(stream_hash, new_txo.id)
@@ -4036,8 +3958,6 @@ class Daemon(metaclass=JSONRPCServerType):
                            [--languages=<languages>...] [--clear_languages]
                            [--locations=<locations>...] [--clear_locations]
                            [--thumbnail_url=<thumbnail_url>] [--cover_url=<cover_url>]
-                           [--channel_id=<channel_id> | --channel_name=<channel_name>]
-                           [--channel_account_id=<channel_account_id>...]
                            [--account_id=<account_id>] [--wallet_id=<wallet_id>]
                            [--claim_address=<claim_address>]
                            [--funding_account_ids=<funding_account_ids>...]
@@ -4093,10 +4013,6 @@ class Daemon(metaclass=JSONRPCServerType):
 
             --clear_locations              : (bool) clear existing locations (prior to adding new ones)
             --thumbnail_url=<thumbnail_url>: (str) thumbnail url
-            --channel_id=<channel_id>      : (str) claim id of the publisher channel
-            --channel_name=<channel_name>  : (str) name of the publisher channel
-            --channel_account_id=<channel_account_id>: (str) one or more account ids for accounts to look in
-                                                   for channel certificates, defaults to all accounts.
             --account_id=<account_id>      : (str) account in which to look for collection (default: all)
             --wallet_id=<wallet_id>        : (str) restrict operation to specific wallet
           --funding_account_ids=<funding_account_ids>: (list) ids of accounts to fund this transaction
@@ -4344,7 +4260,7 @@ class Daemon(metaclass=JSONRPCServerType):
                 'nout': tx.position,
                 'address': claim_address,
                 'claim_id': claim_id,
-                'amount': dewies_to_lbc(new_txo.amount)
+                'amount': dewies_to_lbc(amount)
             }]})
             self.component_manager.loop.create_task(self.analytics_manager.send_claim_action('new_support'))
         else:
@@ -4961,16 +4877,21 @@ class Daemon(metaclass=JSONRPCServerType):
     DHT / Blob Exchange peer commands.
     """
 
-    async def jsonrpc_peer_list(self, blob_hash, page=None, page_size=None):
+    @requires(DHT_COMPONENT)
+    async def jsonrpc_peer_list(self, blob_hash, search_bottom_out_limit=None, page=None, page_size=None):
         """
         Get peers for blob hash
 
         Usage:
             peer_list (<blob_hash> | --blob_hash=<blob_hash>)
+                [<search_bottom_out_limit> | --search_bottom_out_limit=<search_bottom_out_limit>]
                 [--page=<page>] [--page_size=<page_size>]
 
         Options:
             --blob_hash=<blob_hash>                                  : (str) find available peers for this blob hash
+            --search_bottom_out_limit=<search_bottom_out_limit>      : (int) the number of search probes in a row
+                                                                             that don't find any new peers
+                                                                             before giving up and returning
             --page=<page>                                            : (int) page to return during paginating
             --page_size=<page_size>                                  : (int) number of items on page during pagination
 
@@ -4982,29 +4903,28 @@ class Daemon(metaclass=JSONRPCServerType):
         if not is_valid_blobhash(blob_hash):
             # TODO: use error from lbry.error
             raise Exception("invalid blob hash")
-        peer_q = asyncio.Queue(loop=self.component_manager.loop)
+        if search_bottom_out_limit is not None:
-        if self.component_manager.has_component(TRACKER_ANNOUNCER_COMPONENT):
+            search_bottom_out_limit = int(search_bottom_out_limit)
-            tracker = self.component_manager.get_component(TRACKER_ANNOUNCER_COMPONENT)
+            if search_bottom_out_limit <= 0:
-            tracker_peers = await tracker.get_kademlia_peer_list(bytes.fromhex(blob_hash))
+                # TODO: use error from lbry.error
-            log.info("Found %d peers for %s from trackers.", len(tracker_peers), blob_hash[:8])
+                raise Exception("invalid bottom out limit")
-            peer_q.put_nowait(tracker_peers)
+        else:
-        elif not self.component_manager.has_component(DHT_COMPONENT):
+            search_bottom_out_limit = 4
-            raise Exception("Peer list needs, at least, either a DHT component or a Tracker component for discovery.")
         peers = []
-        if self.component_manager.has_component(DHT_COMPONENT):
+        peer_q = asyncio.Queue(loop=self.component_manager.loop)
-            await self.dht_node._peers_for_value_producer(blob_hash, peer_q)
+        await self.dht_node._peers_for_value_producer(blob_hash, peer_q)
         while not peer_q.empty():
             peers.extend(peer_q.get_nowait())
-        results = {
+        results = [
-            (peer.address, peer.tcp_port): {
+            {
-                "node_id": hexlify(peer.node_id).decode() if peer.node_id else None,
+                "node_id": hexlify(peer.node_id).decode(),
                 "address": peer.address,
                 "udp_port": peer.udp_port,
                 "tcp_port": peer.tcp_port,
             }
             for peer in peers
-        }
+        ]
-        return paginate_list(list(results.values()), page, page_size)
+        return paginate_list(results, page, page_size)
 
     @requires(DATABASE_COMPONENT)
     async def jsonrpc_blob_announce(self, blob_hash=None, stream_hash=None, sd_hash=None):
@@ -5474,11 +5394,11 @@ class Daemon(metaclass=JSONRPCServerType):
         return results
 
     @staticmethod
-    def _old_get_temp_claim_info(tx, txo, address, claim_dict, name):
+    def _old_get_temp_claim_info(tx, txo, address, claim_dict, name, bid):
         return {
             "claim_id": txo.claim_id,
             "name": name,
-            "amount": dewies_to_lbc(txo.amount),
+            "amount": bid,
             "address": address,
             "txid": tx.id,
             "nout": txo.position,

lbry/extras/daemon/exchange_rate_manager.py

@@ -80,6 +80,8 @@ class MarketFeed:
             self.rate = ExchangeRate(self.market, rate, int(time.time()))
             self.last_check = time.time()
             return self.rate
+        except asyncio.CancelledError:
+            raise
         except asyncio.TimeoutError:
             log.warning("Timed out fetching exchange rate from %s.", self.name)
         except json.JSONDecodeError as e:
@@ -194,9 +196,9 @@ FEEDS: Iterable[Type[MarketFeed]] = (
     BittrexUSDFeed,
     CoinExBTCFeed,
     CoinExUSDFeed,
-#    HotbitBTCFeed,
+    HotbitBTCFeed,
-#    HotbitUSDFeed,
+    HotbitUSDFeed,
-#    UPbitBTCFeed,
+    UPbitBTCFeed,
 )
 
 

lbry/extras/daemon/json_response_encoder.py

@@ -328,8 +328,8 @@ class JSONResponseEncoder(JSONEncoder):
             result.update({
                 'streaming_url': managed_stream.stream_url,
                 'stream_hash': managed_stream.stream_hash,
-                'stream_name': managed_stream.stream_name,
+                'stream_name': managed_stream.descriptor.stream_name,
-                'suggested_file_name': managed_stream.suggested_file_name,
+                'suggested_file_name': managed_stream.descriptor.suggested_file_name,
                 'sd_hash': managed_stream.descriptor.sd_hash,
                 'mime_type': managed_stream.mime_type,
                 'key': managed_stream.descriptor.key,

lbry/extras/daemon/migrator/dbmigrator.py

@@ -37,8 +37,6 @@ def migrate_db(conf, start, end):
             from .migrate13to14 import do_migration
         elif current == 14:
             from .migrate14to15 import do_migration
-        elif current == 15:
-            from .migrate15to16 import do_migration
         else:
             raise Exception(f"DB migration of version {current} to {current+1} is not available")
         try:

lbry/extras/daemon/migrator/migrate15to16.py

@@ -1,17 +0,0 @@
-import os
-import sqlite3
-
-
-def do_migration(conf):
-    db_path = os.path.join(conf.data_dir, "lbrynet.sqlite")
-    connection = sqlite3.connect(db_path)
-    cursor = connection.cursor()
-
-    cursor.executescript("""
-        update blob set should_announce=0
-        where should_announce=1 and 
-        blob.blob_hash in (select stream_blob.blob_hash from stream_blob where position=0);
-    """)
-
-    connection.commit()
-    connection.close()

lbry/extras/daemon/migrator/migrate8to9.py

@@ -20,7 +20,7 @@ def do_migration(conf):
                            "left outer join blob b ON b.blob_hash=s.blob_hash order by s.position").fetchall()
     blobs_by_stream = {}
     for stream_hash, position, iv, blob_hash, blob_length in blobs:
-        blobs_by_stream.setdefault(stream_hash, []).append(BlobInfo(position, blob_length or 0, iv, 0, blob_hash))
+        blobs_by_stream.setdefault(stream_hash, []).append(BlobInfo(position, blob_length or 0, iv, blob_hash))
 
     for stream_name, stream_key, suggested_filename, sd_hash, stream_hash in streams:
         sd = StreamDescriptor(None, blob_dir, stream_name, stream_key, suggested_filename,

lbry/extras/daemon/storage.py

@@ -187,8 +187,8 @@ def store_stream(transaction: sqlite3.Connection, sd_blob: 'BlobFile', descripto
     ).fetchall()
     # ensure should_announce is set regardless if insert was ignored
     transaction.execute(
-        "update blob set should_announce=1 where blob_hash in (?)",
+        "update blob set should_announce=1 where blob_hash in (?, ?)",
-        (sd_blob.blob_hash,)
+        (sd_blob.blob_hash, descriptor.blobs[0].blob_hash,)
     ).fetchall()
 
 
@@ -449,8 +449,7 @@ class SQLiteStorage(SQLiteMixin):
             return await self.db.execute_fetchall(
                 "select blob.blob_hash, blob.blob_length, blob.added_on "
                 "from blob left join stream_blob using (blob_hash) "
-                "where stream_blob.stream_hash is null and blob.is_mine=? and blob.status='finished'"
+                "where stream_blob.stream_hash is null and blob.is_mine=? order by blob.added_on asc",
-                "order by blob.blob_length desc, blob.added_on asc",
                 (is_mine,)
             )
 
@@ -463,8 +462,7 @@ class SQLiteStorage(SQLiteMixin):
         content_blobs = await self.db.execute_fetchall(
             "select blob.blob_hash, blob.blob_length, blob.added_on "
             "from blob join stream_blob using (blob_hash) cross join stream using (stream_hash)"
-            "cross join file using (stream_hash)"
+            "cross join file using (stream_hash) where blob.is_mine=? order by blob.added_on asc",
-            "where blob.is_mine=? and blob.status='finished' order by blob.added_on asc, blob.blob_length asc",
             (is_mine,)
         )
         return content_blobs + sd_blobs
@@ -482,7 +480,6 @@ class SQLiteStorage(SQLiteMixin):
                    is_mine=1
                then blob_length else 0 end), 0) as private_storage
         from blob left join stream_blob using (blob_hash)
-        where blob_hash not in (select sd_hash from stream) and blob.status="finished"
         """)
         return {
             'network_storage': network_size,
@@ -534,8 +531,7 @@ class SQLiteStorage(SQLiteMixin):
         def _get_blobs_for_stream(transaction):
             crypt_blob_infos = []
             stream_blobs = transaction.execute(
-                "select s.blob_hash, s.position, s.iv, b.added_on "
+                "select blob_hash, position, iv from stream_blob where stream_hash=? "
-                "from stream_blob s left outer join blob b on b.blob_hash=s.blob_hash where stream_hash=? "
                 "order by position asc", (stream_hash, )
             ).fetchall()
             if only_completed:
@@ -555,10 +551,9 @@ class SQLiteStorage(SQLiteMixin):
             for blob_hash, length in lengths:
                 blob_length_dict[blob_hash] = length
 
-            current_time = time.time()
+            for blob_hash, position, iv in stream_blobs:
-            for blob_hash, position, iv, added_on in stream_blobs:
                 blob_length = blob_length_dict.get(blob_hash, 0)
-                crypt_blob_infos.append(BlobInfo(position, blob_length, iv, added_on or current_time, blob_hash))
+                crypt_blob_infos.append(BlobInfo(position, blob_length, iv, blob_hash))
                 if not blob_hash:
                     break
             return crypt_blob_infos
@@ -793,7 +788,7 @@ class SQLiteStorage(SQLiteMixin):
 
         await self.db.run(_save_claims)
         if update_file_callbacks:
-            await asyncio.wait(map(asyncio.create_task, update_file_callbacks))
+            await asyncio.wait(update_file_callbacks)
         if claim_id_to_supports:
             await self.save_supports(claim_id_to_supports)
 

lbry/file/file_manager.py

@@ -13,12 +13,11 @@ from lbry.schema.url import URL
 from lbry.wallet.dewies import dewies_to_lbc
 from lbry.file.source_manager import SourceManager
 from lbry.file.source import ManagedDownloadSource
-from lbry.extras.daemon.storage import StoredContentClaim
 if typing.TYPE_CHECKING:
     from lbry.conf import Config
     from lbry.extras.daemon.analytics import AnalyticsManager
     from lbry.extras.daemon.storage import SQLiteStorage
-    from lbry.wallet import WalletManager
+    from lbry.wallet import WalletManager, Output
     from lbry.extras.daemon.exchange_rate_manager import ExchangeRateManager
 
 log = logging.getLogger(__name__)
@@ -50,10 +49,10 @@ class FileManager:
             await manager.started.wait()
         self.started.set()
 
-    async def stop(self):
+    def stop(self):
         for manager in self.source_managers.values():
             # fixme: pop or not?
-            await manager.stop()
+            manager.stop()
         self.started.clear()
 
     @cache_concurrent
@@ -99,6 +98,8 @@ class FileManager:
             except asyncio.TimeoutError:
                 raise ResolveTimeoutError(uri)
             except Exception as err:
+                if isinstance(err, asyncio.CancelledError):
+                    raise
                 log.exception("Unexpected error resolving stream:")
                 raise ResolveError(f"Unexpected error resolving stream: {str(err)}")
             if 'error' in resolved_result:
@@ -193,24 +194,21 @@ class FileManager:
             ####################
             # make downloader and wait for start
             ####################
-            # temporary with fields we know so downloader can start. Missing fields are populated later.
-            stored_claim = StoredContentClaim(outpoint=outpoint, claim_id=txo.claim_id, name=txo.claim_name,
-                                              amount=txo.amount, height=txo.tx_ref.height,
-                                              serialized=claim.to_bytes().hex())
 
             if not claim.stream.source.bt_infohash:
                 # fixme: this shouldnt be here
                 stream = ManagedStream(
                     self.loop, self.config, source_manager.blob_manager, claim.stream.source.sd_hash,
                     download_directory, file_name, ManagedStream.STATUS_RUNNING, content_fee=payment,
-                    analytics_manager=self.analytics_manager, claim=stored_claim
+                    analytics_manager=self.analytics_manager
                 )
                 stream.downloader.node = source_manager.node
             else:
                 stream = TorrentSource(
                     self.loop, self.config, self.storage, identifier=claim.stream.source.bt_infohash,
                     file_name=file_name, download_directory=download_directory or self.config.download_dir,
-                    status=ManagedStream.STATUS_RUNNING, claim=stored_claim, analytics_manager=self.analytics_manager,
+                    status=ManagedStream.STATUS_RUNNING,
+                    analytics_manager=self.analytics_manager,
                     torrent_session=source_manager.torrent_session
                 )
             log.info("starting download for %s", uri)
@@ -242,12 +240,13 @@ class FileManager:
                 claim_info = await self.storage.get_content_claim_for_torrent(stream.identifier)
                 stream.set_claim(claim_info, claim)
             if save_file:
-                await asyncio.wait_for(stream.save_file(), timeout - (self.loop.time() - before_download))
+                await asyncio.wait_for(stream.save_file(), timeout - (self.loop.time() - before_download),
+                                       loop=self.loop)
             return stream
         except asyncio.TimeoutError:
             error = DownloadDataTimeoutError(stream.sd_hash)
             raise error
-        except (Exception, asyncio.CancelledError) as err:  # forgive data timeout, don't delete stream
+        except Exception as err:  # forgive data timeout, don't delete stream
             expected = (DownloadSDTimeoutError, DownloadDataTimeoutError, InsufficientFundsError,
                         KeyFeeAboveMaxAllowedError, ResolveError, InvalidStreamURLError)
             if isinstance(err, expected):

lbry/file/source.py

@@ -45,12 +45,11 @@ class ManagedDownloadSource:
         self.purchase_receipt = None
         self._added_on = added_on
         self.analytics_manager = analytics_manager
-        self.downloader = None
 
-        self.saving = asyncio.Event()
+        self.saving = asyncio.Event(loop=self.loop)
-        self.finished_writing = asyncio.Event()
+        self.finished_writing = asyncio.Event(loop=self.loop)
-        self.started_writing = asyncio.Event()
+        self.started_writing = asyncio.Event(loop=self.loop)
-        self.finished_write_attempt = asyncio.Event()
+        self.finished_write_attempt = asyncio.Event(loop=self.loop)
 
     # @classmethod
     # async def create(cls, loop: asyncio.AbstractEventLoop, config: 'Config', file_path: str,
@@ -67,7 +66,7 @@ class ManagedDownloadSource:
     async def save_file(self, file_name: Optional[str] = None, download_directory: Optional[str] = None):
         raise NotImplementedError()
 
-    async def stop_tasks(self):
+    def stop_tasks(self):
         raise NotImplementedError()
 
     def set_claim(self, claim_info: typing.Dict, claim: 'Claim'):

lbry/file/source_manager.py

@@ -54,16 +54,16 @@ class SourceManager:
         self.storage = storage
         self.analytics_manager = analytics_manager
         self._sources: typing.Dict[str, ManagedDownloadSource] = {}
-        self.started = asyncio.Event()
+        self.started = asyncio.Event(loop=self.loop)
 
     def add(self, source: ManagedDownloadSource):
         self._sources[source.identifier] = source
 
-    async def remove(self, source: ManagedDownloadSource):
+    def remove(self, source: ManagedDownloadSource):
         if source.identifier not in self._sources:
             return
         self._sources.pop(source.identifier)
-        await source.stop_tasks()
+        source.stop_tasks()
 
     async def initialize_from_database(self):
         raise NotImplementedError()
@@ -72,10 +72,10 @@ class SourceManager:
         await self.initialize_from_database()
         self.started.set()
 
-    async def stop(self):
+    def stop(self):
         while self._sources:
             _, source = self._sources.popitem()
-            await source.stop_tasks()
+            source.stop_tasks()
         self.started.clear()
 
     async def create(self, file_path: str, key: Optional[bytes] = None,
@@ -83,7 +83,7 @@ class SourceManager:
         raise NotImplementedError()
 
     async def delete(self, source: ManagedDownloadSource, delete_file: Optional[bool] = False):
-        await self.remove(source)
+        self.remove(source)
         if delete_file and source.output_file_exists:
             os.remove(source.full_path)
 

lbry/schema/Makefile

@@ -2,5 +2,4 @@ build:
 	rm types/v2/* -rf
 	touch types/v2/__init__.py
 	cd types/v2/ && protoc --python_out=. -I ../../../../../types/v2/proto/ ../../../../../types/v2/proto/*.proto
-	cd types/v2/ && cp ../../../../../types/jsonschema/* ./
 	sed -e 's/^import\ \(.*\)_pb2\ /from . import\ \1_pb2\ /g' -i types/v2/*.py

lbry/schema/claim.py

@@ -398,12 +398,6 @@ class Repost(BaseClaim):
 
     claim_type = Claim.REPOST
 
-    def to_dict(self):
-        claim = super().to_dict()
-        if claim.pop('claim_hash', None):
-            claim['claim_id'] = self.reference.claim_id
-        return claim
-
     @property
     def reference(self) -> ClaimReference:
         return ClaimReference(self.message)

lbry/schema/mime_types.py

@@ -1,6 +1,4 @@
 import os
-import filetype
-import logging
 
 types_map = {
     # http://www.iana.org/assignments/media-types
@@ -168,38 +166,10 @@ types_map = {
     '.wmv': ('video/x-ms-wmv', 'video')
 }
 
-# maps detected extensions to the possible analogs
-# i.e. .cbz file is actually a .zip
-synonyms_map = {
-    '.zip': ['.cbz'],
-    '.rar': ['.cbr'],
-    '.ar': ['.a']
-}
-
-log = logging.getLogger(__name__)
-
 
 def guess_media_type(path):
     _, ext = os.path.splitext(path)
     extension = ext.strip().lower()
-
-    try:
-        kind = filetype.guess(path)
-        if kind:
-            real_extension = f".{kind.extension}"
-
-            if extension != real_extension:
-                if extension:
-                    log.warning(f"file extension does not match it's contents: {path}, identified as {real_extension}")
-                else:
-                    log.debug(f"file {path} does not have extension, identified by it's contents as {real_extension}")
-
-                if extension not in synonyms_map.get(real_extension, []):
-                    extension = real_extension
-
-    except OSError as error:
-        pass
-
     if extension[1:]:
         if extension in types_map:
             return types_map[extension]

lbry/schema/result.py

@@ -1,11 +1,13 @@
 import base64
-from typing import List, Union, Optional, NamedTuple
+from typing import List, TYPE_CHECKING, Union, Optional
 from binascii import hexlify
 from itertools import chain
 
 from lbry.error import ResolveCensoredError
 from lbry.schema.types.v2.result_pb2 import Outputs as OutputsMessage
 from lbry.schema.types.v2.result_pb2 import Error as ErrorMessage
+if TYPE_CHECKING:
+    from lbry.wallet.server.db.common import ResolveResult
 
 INVALID = ErrorMessage.Code.Name(ErrorMessage.INVALID)
 NOT_FOUND = ErrorMessage.Code.Name(ErrorMessage.NOT_FOUND)
@@ -22,31 +24,6 @@ def set_reference(reference, claim_hash, rows):
                 return
 
 
-class ResolveResult(NamedTuple):
-    name: str
-    normalized_name: str
-    claim_hash: bytes
-    tx_num: int
-    position: int
-    tx_hash: bytes
-    height: int
-    amount: int
-    short_url: str
-    is_controlling: bool
-    canonical_url: str
-    creation_height: int
-    activation_height: int
-    expiration_height: int
-    effective_amount: int
-    support_amount: int
-    reposted: int
-    last_takeover_height: Optional[int]
-    claims_in_channel: Optional[int]
-    channel_hash: Optional[bytes]
-    reposted_claim_hash: Optional[bytes]
-    signature_valid: Optional[bool]
-
-
 class Censor:
 
     NOT_CENSORED = 0
@@ -177,6 +154,19 @@ class Outputs:
             outputs.blocked, outputs.blocked_total
         )
 
+    @classmethod
+    def from_grpc(cls, outputs: OutputsMessage) -> 'Outputs':
+        txs = set()
+        for txo_message in chain(outputs.txos, outputs.extra_txos):
+            if txo_message.WhichOneof('meta') == 'error':
+                continue
+            txs.add((hexlify(txo_message.tx_hash[::-1]).decode(), txo_message.height))
+        return cls(
+            outputs.txos, outputs.extra_txos, txs,
+            outputs.offset, outputs.total,
+            outputs.blocked, outputs.blocked_total
+        )
+
     @classmethod
     def to_base64(cls, txo_rows, extra_txo_rows, offset=0, total=None, blocked=None) -> str:
         return base64.b64encode(cls.to_bytes(txo_rows, extra_txo_rows, offset, total, blocked)).decode()

lbry/schema/types/v2/hub_pb2.py

@@ -0,0 +1,960 @@
+# -*- coding: utf-8 -*-
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: hub.proto
+"""Generated protocol buffer code."""
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+from . import result_pb2 as result__pb2
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='hub.proto',
+  package='pb',
+  syntax='proto3',
+  serialized_options=b'Z$github.com/lbryio/hub/protobuf/go/pb',
+  create_key=_descriptor._internal_create_key,
+  serialized_pb=b'\n\thub.proto\x12\x02pb\x1a\x0cresult.proto\"\x0e\n\x0c\x45mptyMessage\".\n\rServerMessage\x12\x0f\n\x07\x61\x64\x64ress\x18\x01 \x01(\t\x12\x0c\n\x04port\x18\x02 \x01(\t\"N\n\x0cHelloMessage\x12\x0c\n\x04port\x18\x01 \x01(\t\x12\x0c\n\x04host\x18\x02 \x01(\t\x12\"\n\x07servers\x18\x03 \x03(\x0b\x32\x11.pb.ServerMessage\"0\n\x0fInvertibleField\x12\x0e\n\x06invert\x18\x01 \x01(\x08\x12\r\n\x05value\x18\x02 \x03(\t\"\x1c\n\x0bStringValue\x12\r\n\x05value\x18\x01 \x01(\t\"\x1a\n\tBoolValue\x12\r\n\x05value\x18\x01 \x01(\x08\"\x1c\n\x0bUInt32Value\x12\r\n\x05value\x18\x01 \x01(\r\"j\n\nRangeField\x12\x1d\n\x02op\x18\x01 \x01(\x0e\x32\x11.pb.RangeField.Op\x12\r\n\x05value\x18\x02 \x03(\x05\".\n\x02Op\x12\x06\n\x02\x45Q\x10\x00\x12\x07\n\x03LTE\x10\x01\x12\x07\n\x03GTE\x10\x02\x12\x06\n\x02LT\x10\x03\x12\x06\n\x02GT\x10\x04\"\x8e\x0c\n\rSearchRequest\x12%\n\x08\x63laim_id\x18\x01 \x01(\x0b\x32\x13.pb.InvertibleField\x12\'\n\nchannel_id\x18\x02 \x01(\x0b\x32\x13.pb.InvertibleField\x12\x0c\n\x04text\x18\x03 \x01(\t\x12\r\n\x05limit\x18\x04 \x01(\x05\x12\x10\n\x08order_by\x18\x05 \x03(\t\x12\x0e\n\x06offset\x18\x06 \x01(\r\x12\x16\n\x0eis_controlling\x18\x07 \x01(\x08\x12\x1d\n\x15last_take_over_height\x18\x08 \x01(\t\x12\x12\n\nclaim_name\x18\t \x01(\t\x12\x17\n\x0fnormalized_name\x18\n \x01(\t\x12#\n\x0btx_position\x18\x0b \x03(\x0b\x32\x0e.pb.RangeField\x12\x1e\n\x06\x61mount\x18\x0c \x03(\x0b\x32\x0e.pb.RangeField\x12!\n\ttimestamp\x18\r \x03(\x0b\x32\x0e.pb.RangeField\x12*\n\x12\x63reation_timestamp\x18\x0e \x03(\x0b\x32\x0e.pb.RangeField\x12\x1e\n\x06height\x18\x0f \x03(\x0b\x32\x0e.pb.RangeField\x12\'\n\x0f\x63reation_height\x18\x10 \x03(\x0b\x32\x0e.pb.RangeField\x12)\n\x11\x61\x63tivation_height\x18\x11 \x03(\x0b\x32\x0e.pb.RangeField\x12)\n\x11\x65xpiration_height\x18\x12 \x03(\x0b\x32\x0e.pb.RangeField\x12$\n\x0crelease_time\x18\x13 \x03(\x0b\x32\x0e.pb.RangeField\x12\x11\n\tshort_url\x18\x14 \x01(\t\x12\x15\n\rcanonical_url\x18\x15 \x01(\t\x12\r\n\x05title\x18\x16 \x01(\t\x12\x0e\n\x06\x61uthor\x18\x17 \x01(\t\x12\x13\n\x0b\x64\x65scription\x18\x18 \x01(\t\x12\x12\n\nclaim_type\x18\x19 \x03(\t\x12$\n\x0crepost_count\x18\x1a \x03(\x0b\x32\x0e.pb.RangeField\x12\x13\n\x0bstream_type\x18\x1b \x03(\t\x12\x12\n\nmedia_type\x18\x1c \x03(\t\x12\"\n\nfee_amount\x18\x1d \x03(\x0b\x32\x0e.pb.RangeField\x12\x14\n\x0c\x66\x65\x65_currency\x18\x1e \x01(\t\x12 \n\x08\x64uration\x18\x1f \x03(\x0b\x32\x0e.pb.RangeField\x12\x19\n\x11reposted_claim_id\x18  \x01(\t\x12#\n\x0b\x63\x65nsor_type\x18! \x03(\x0b\x32\x0e.pb.RangeField\x12\x19\n\x11\x63laims_in_channel\x18\" \x01(\t\x12)\n\x12is_signature_valid\x18$ \x01(\x0b\x32\r.pb.BoolValue\x12(\n\x10\x65\x66\x66\x65\x63tive_amount\x18% \x03(\x0b\x32\x0e.pb.RangeField\x12&\n\x0esupport_amount\x18& \x03(\x0b\x32\x0e.pb.RangeField\x12&\n\x0etrending_score\x18\' \x03(\x0b\x32\x0e.pb.RangeField\x12\r\n\x05tx_id\x18+ \x01(\t\x12 \n\x07tx_nout\x18, \x01(\x0b\x32\x0f.pb.UInt32Value\x12\x11\n\tsignature\x18- \x01(\t\x12\x18\n\x10signature_digest\x18. \x01(\t\x12\x18\n\x10public_key_bytes\x18/ \x01(\t\x12\x15\n\rpublic_key_id\x18\x30 \x01(\t\x12\x10\n\x08\x61ny_tags\x18\x31 \x03(\t\x12\x10\n\x08\x61ll_tags\x18\x32 \x03(\t\x12\x10\n\x08not_tags\x18\x33 \x03(\t\x12\x1d\n\x15has_channel_signature\x18\x34 \x01(\x08\x12!\n\nhas_source\x18\x35 \x01(\x0b\x32\r.pb.BoolValue\x12 \n\x18limit_claims_per_channel\x18\x36 \x01(\x05\x12\x15\n\rany_languages\x18\x37 \x03(\t\x12\x15\n\rall_languages\x18\x38 \x03(\t\x12\x19\n\x11remove_duplicates\x18\x39 \x01(\x08\x12\x11\n\tno_totals\x18: \x01(\x08\x12\x0f\n\x07sd_hash\x18; \x01(\t2\x88\x03\n\x03Hub\x12*\n\x06Search\x12\x11.pb.SearchRequest\x1a\x0b.pb.Outputs\"\x00\x12+\n\x04Ping\x12\x10.pb.EmptyMessage\x1a\x0f.pb.StringValue\"\x00\x12-\n\x05Hello\x12\x10.pb.HelloMessage\x1a\x10.pb.HelloMessage\"\x00\x12/\n\x07\x41\x64\x64Peer\x12\x11.pb.ServerMessage\x1a\x0f.pb.StringValue\"\x00\x12\x35\n\rPeerSubscribe\x12\x11.pb.ServerMessage\x1a\x0f.pb.StringValue\"\x00\x12.\n\x07Version\x12\x10.pb.EmptyMessage\x1a\x0f.pb.StringValue\"\x00\x12/\n\x08\x46\x65\x61tures\x12\x10.pb.EmptyMessage\x1a\x0f.pb.StringValue\"\x00\x12\x30\n\tBroadcast\x12\x10.pb.EmptyMessage\x1a\x0f.pb.UInt32Value\"\x00\x42&Z$github.com/lbryio/hub/protobuf/go/pbb\x06proto3'
+  ,
+  dependencies=[result__pb2.DESCRIPTOR,])
+
+
+
+_RANGEFIELD_OP = _descriptor.EnumDescriptor(
+  name='Op',
+  full_name='pb.RangeField.Op',
+  filename=None,
+  file=DESCRIPTOR,
+  create_key=_descriptor._internal_create_key,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='EQ', index=0, number=0,
+      serialized_options=None,
+      type=None,
+      create_key=_descriptor._internal_create_key),
+    _descriptor.EnumValueDescriptor(
+      name='LTE', index=1, number=1,
+      serialized_options=None,
+      type=None,
+      create_key=_descriptor._internal_create_key),
+    _descriptor.EnumValueDescriptor(
+      name='GTE', index=2, number=2,
+      serialized_options=None,
+      type=None,
+      create_key=_descriptor._internal_create_key),
+    _descriptor.EnumValueDescriptor(
+      name='LT', index=3, number=3,
+      serialized_options=None,
+      type=None,
+      create_key=_descriptor._internal_create_key),
+    _descriptor.EnumValueDescriptor(
+      name='GT', index=4, number=4,
+      serialized_options=None,
+      type=None,
+      create_key=_descriptor._internal_create_key),
+  ],
+  containing_type=None,
+  serialized_options=None,
+  serialized_start=373,
+  serialized_end=419,
+)
+_sym_db.RegisterEnumDescriptor(_RANGEFIELD_OP)
+
+
+_EMPTYMESSAGE = _descriptor.Descriptor(
+  name='EmptyMessage',
+  full_name='pb.EmptyMessage',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=31,
+  serialized_end=45,
+)
+
+
+_SERVERMESSAGE = _descriptor.Descriptor(
+  name='ServerMessage',
+  full_name='pb.ServerMessage',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='address', full_name='pb.ServerMessage.address', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='port', full_name='pb.ServerMessage.port', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=47,
+  serialized_end=93,
+)
+
+
+_HELLOMESSAGE = _descriptor.Descriptor(
+  name='HelloMessage',
+  full_name='pb.HelloMessage',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='port', full_name='pb.HelloMessage.port', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='host', full_name='pb.HelloMessage.host', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='servers', full_name='pb.HelloMessage.servers', index=2,
+      number=3, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=95,
+  serialized_end=173,
+)
+
+
+_INVERTIBLEFIELD = _descriptor.Descriptor(
+  name='InvertibleField',
+  full_name='pb.InvertibleField',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='invert', full_name='pb.InvertibleField.invert', index=0,
+      number=1, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='value', full_name='pb.InvertibleField.value', index=1,
+      number=2, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=175,
+  serialized_end=223,
+)
+
+
+_STRINGVALUE = _descriptor.Descriptor(
+  name='StringValue',
+  full_name='pb.StringValue',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='pb.StringValue.value', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=225,
+  serialized_end=253,
+)
+
+
+_BOOLVALUE = _descriptor.Descriptor(
+  name='BoolValue',
+  full_name='pb.BoolValue',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='pb.BoolValue.value', index=0,
+      number=1, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=255,
+  serialized_end=281,
+)
+
+
+_UINT32VALUE = _descriptor.Descriptor(
+  name='UInt32Value',
+  full_name='pb.UInt32Value',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='value', full_name='pb.UInt32Value.value', index=0,
+      number=1, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=283,
+  serialized_end=311,
+)
+
+
+_RANGEFIELD = _descriptor.Descriptor(
+  name='RangeField',
+  full_name='pb.RangeField',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='op', full_name='pb.RangeField.op', index=0,
+      number=1, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='value', full_name='pb.RangeField.value', index=1,
+      number=2, type=5, cpp_type=1, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+    _RANGEFIELD_OP,
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=313,
+  serialized_end=419,
+)
+
+
+_SEARCHREQUEST = _descriptor.Descriptor(
+  name='SearchRequest',
+  full_name='pb.SearchRequest',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  create_key=_descriptor._internal_create_key,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='claim_id', full_name='pb.SearchRequest.claim_id', index=0,
+      number=1, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='channel_id', full_name='pb.SearchRequest.channel_id', index=1,
+      number=2, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='text', full_name='pb.SearchRequest.text', index=2,
+      number=3, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='limit', full_name='pb.SearchRequest.limit', index=3,
+      number=4, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='order_by', full_name='pb.SearchRequest.order_by', index=4,
+      number=5, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='offset', full_name='pb.SearchRequest.offset', index=5,
+      number=6, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='is_controlling', full_name='pb.SearchRequest.is_controlling', index=6,
+      number=7, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='last_take_over_height', full_name='pb.SearchRequest.last_take_over_height', index=7,
+      number=8, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='claim_name', full_name='pb.SearchRequest.claim_name', index=8,
+      number=9, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='normalized_name', full_name='pb.SearchRequest.normalized_name', index=9,
+      number=10, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='tx_position', full_name='pb.SearchRequest.tx_position', index=10,
+      number=11, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='amount', full_name='pb.SearchRequest.amount', index=11,
+      number=12, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='timestamp', full_name='pb.SearchRequest.timestamp', index=12,
+      number=13, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='creation_timestamp', full_name='pb.SearchRequest.creation_timestamp', index=13,
+      number=14, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='height', full_name='pb.SearchRequest.height', index=14,
+      number=15, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='creation_height', full_name='pb.SearchRequest.creation_height', index=15,
+      number=16, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='activation_height', full_name='pb.SearchRequest.activation_height', index=16,
+      number=17, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='expiration_height', full_name='pb.SearchRequest.expiration_height', index=17,
+      number=18, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='release_time', full_name='pb.SearchRequest.release_time', index=18,
+      number=19, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='short_url', full_name='pb.SearchRequest.short_url', index=19,
+      number=20, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='canonical_url', full_name='pb.SearchRequest.canonical_url', index=20,
+      number=21, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='title', full_name='pb.SearchRequest.title', index=21,
+      number=22, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='author', full_name='pb.SearchRequest.author', index=22,
+      number=23, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='description', full_name='pb.SearchRequest.description', index=23,
+      number=24, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='claim_type', full_name='pb.SearchRequest.claim_type', index=24,
+      number=25, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='repost_count', full_name='pb.SearchRequest.repost_count', index=25,
+      number=26, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='stream_type', full_name='pb.SearchRequest.stream_type', index=26,
+      number=27, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='media_type', full_name='pb.SearchRequest.media_type', index=27,
+      number=28, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='fee_amount', full_name='pb.SearchRequest.fee_amount', index=28,
+      number=29, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='fee_currency', full_name='pb.SearchRequest.fee_currency', index=29,
+      number=30, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='duration', full_name='pb.SearchRequest.duration', index=30,
+      number=31, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='reposted_claim_id', full_name='pb.SearchRequest.reposted_claim_id', index=31,
+      number=32, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='censor_type', full_name='pb.SearchRequest.censor_type', index=32,
+      number=33, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='claims_in_channel', full_name='pb.SearchRequest.claims_in_channel', index=33,
+      number=34, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='is_signature_valid', full_name='pb.SearchRequest.is_signature_valid', index=34,
+      number=36, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='effective_amount', full_name='pb.SearchRequest.effective_amount', index=35,
+      number=37, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='support_amount', full_name='pb.SearchRequest.support_amount', index=36,
+      number=38, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='trending_score', full_name='pb.SearchRequest.trending_score', index=37,
+      number=39, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='tx_id', full_name='pb.SearchRequest.tx_id', index=38,
+      number=43, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='tx_nout', full_name='pb.SearchRequest.tx_nout', index=39,
+      number=44, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='signature', full_name='pb.SearchRequest.signature', index=40,
+      number=45, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='signature_digest', full_name='pb.SearchRequest.signature_digest', index=41,
+      number=46, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='public_key_bytes', full_name='pb.SearchRequest.public_key_bytes', index=42,
+      number=47, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='public_key_id', full_name='pb.SearchRequest.public_key_id', index=43,
+      number=48, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='any_tags', full_name='pb.SearchRequest.any_tags', index=44,
+      number=49, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='all_tags', full_name='pb.SearchRequest.all_tags', index=45,
+      number=50, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='not_tags', full_name='pb.SearchRequest.not_tags', index=46,
+      number=51, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='has_channel_signature', full_name='pb.SearchRequest.has_channel_signature', index=47,
+      number=52, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='has_source', full_name='pb.SearchRequest.has_source', index=48,
+      number=53, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='limit_claims_per_channel', full_name='pb.SearchRequest.limit_claims_per_channel', index=49,
+      number=54, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='any_languages', full_name='pb.SearchRequest.any_languages', index=50,
+      number=55, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='all_languages', full_name='pb.SearchRequest.all_languages', index=51,
+      number=56, type=9, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='remove_duplicates', full_name='pb.SearchRequest.remove_duplicates', index=52,
+      number=57, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='no_totals', full_name='pb.SearchRequest.no_totals', index=53,
+      number=58, type=8, cpp_type=7, label=1,
+      has_default_value=False, default_value=False,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+    _descriptor.FieldDescriptor(
+      name='sd_hash', full_name='pb.SearchRequest.sd_hash', index=54,
+      number=59, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=b"".decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  serialized_options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=422,
+  serialized_end=1972,
+)
+
+_HELLOMESSAGE.fields_by_name['servers'].message_type = _SERVERMESSAGE
+_RANGEFIELD.fields_by_name['op'].enum_type = _RANGEFIELD_OP
+_RANGEFIELD_OP.containing_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['claim_id'].message_type = _INVERTIBLEFIELD
+_SEARCHREQUEST.fields_by_name['channel_id'].message_type = _INVERTIBLEFIELD
+_SEARCHREQUEST.fields_by_name['tx_position'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['amount'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['timestamp'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['creation_timestamp'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['height'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['creation_height'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['activation_height'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['expiration_height'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['release_time'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['repost_count'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['fee_amount'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['duration'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['censor_type'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['is_signature_valid'].message_type = _BOOLVALUE
+_SEARCHREQUEST.fields_by_name['effective_amount'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['support_amount'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['trending_score'].message_type = _RANGEFIELD
+_SEARCHREQUEST.fields_by_name['tx_nout'].message_type = _UINT32VALUE
+_SEARCHREQUEST.fields_by_name['has_source'].message_type = _BOOLVALUE
+DESCRIPTOR.message_types_by_name['EmptyMessage'] = _EMPTYMESSAGE
+DESCRIPTOR.message_types_by_name['ServerMessage'] = _SERVERMESSAGE
+DESCRIPTOR.message_types_by_name['HelloMessage'] = _HELLOMESSAGE
+DESCRIPTOR.message_types_by_name['InvertibleField'] = _INVERTIBLEFIELD
+DESCRIPTOR.message_types_by_name['StringValue'] = _STRINGVALUE
+DESCRIPTOR.message_types_by_name['BoolValue'] = _BOOLVALUE
+DESCRIPTOR.message_types_by_name['UInt32Value'] = _UINT32VALUE
+DESCRIPTOR.message_types_by_name['RangeField'] = _RANGEFIELD
+DESCRIPTOR.message_types_by_name['SearchRequest'] = _SEARCHREQUEST
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+EmptyMessage = _reflection.GeneratedProtocolMessageType('EmptyMessage', (_message.Message,), {
+  'DESCRIPTOR' : _EMPTYMESSAGE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.EmptyMessage)
+  })
+_sym_db.RegisterMessage(EmptyMessage)
+
+ServerMessage = _reflection.GeneratedProtocolMessageType('ServerMessage', (_message.Message,), {
+  'DESCRIPTOR' : _SERVERMESSAGE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.ServerMessage)
+  })
+_sym_db.RegisterMessage(ServerMessage)
+
+HelloMessage = _reflection.GeneratedProtocolMessageType('HelloMessage', (_message.Message,), {
+  'DESCRIPTOR' : _HELLOMESSAGE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.HelloMessage)
+  })
+_sym_db.RegisterMessage(HelloMessage)
+
+InvertibleField = _reflection.GeneratedProtocolMessageType('InvertibleField', (_message.Message,), {
+  'DESCRIPTOR' : _INVERTIBLEFIELD,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.InvertibleField)
+  })
+_sym_db.RegisterMessage(InvertibleField)
+
+StringValue = _reflection.GeneratedProtocolMessageType('StringValue', (_message.Message,), {
+  'DESCRIPTOR' : _STRINGVALUE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.StringValue)
+  })
+_sym_db.RegisterMessage(StringValue)
+
+BoolValue = _reflection.GeneratedProtocolMessageType('BoolValue', (_message.Message,), {
+  'DESCRIPTOR' : _BOOLVALUE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.BoolValue)
+  })
+_sym_db.RegisterMessage(BoolValue)
+
+UInt32Value = _reflection.GeneratedProtocolMessageType('UInt32Value', (_message.Message,), {
+  'DESCRIPTOR' : _UINT32VALUE,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.UInt32Value)
+  })
+_sym_db.RegisterMessage(UInt32Value)
+
+RangeField = _reflection.GeneratedProtocolMessageType('RangeField', (_message.Message,), {
+  'DESCRIPTOR' : _RANGEFIELD,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.RangeField)
+  })
+_sym_db.RegisterMessage(RangeField)
+
+SearchRequest = _reflection.GeneratedProtocolMessageType('SearchRequest', (_message.Message,), {
+  'DESCRIPTOR' : _SEARCHREQUEST,
+  '__module__' : 'hub_pb2'
+  # @@protoc_insertion_point(class_scope:pb.SearchRequest)
+  })
+_sym_db.RegisterMessage(SearchRequest)
+
+
+DESCRIPTOR._options = None
+
+_HUB = _descriptor.ServiceDescriptor(
+  name='Hub',
+  full_name='pb.Hub',
+  file=DESCRIPTOR,
+  index=0,
+  serialized_options=None,
+  create_key=_descriptor._internal_create_key,
+  serialized_start=1975,
+  serialized_end=2367,
+  methods=[
+  _descriptor.MethodDescriptor(
+    name='Search',
+    full_name='pb.Hub.Search',
+    index=0,
+    containing_service=None,
+    input_type=_SEARCHREQUEST,
+    output_type=result__pb2._OUTPUTS,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='Ping',
+    full_name='pb.Hub.Ping',
+    index=1,
+    containing_service=None,
+    input_type=_EMPTYMESSAGE,
+    output_type=_STRINGVALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='Hello',
+    full_name='pb.Hub.Hello',
+    index=2,
+    containing_service=None,
+    input_type=_HELLOMESSAGE,
+    output_type=_HELLOMESSAGE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='AddPeer',
+    full_name='pb.Hub.AddPeer',
+    index=3,
+    containing_service=None,
+    input_type=_SERVERMESSAGE,
+    output_type=_STRINGVALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='PeerSubscribe',
+    full_name='pb.Hub.PeerSubscribe',
+    index=4,
+    containing_service=None,
+    input_type=_SERVERMESSAGE,
+    output_type=_STRINGVALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='Version',
+    full_name='pb.Hub.Version',
+    index=5,
+    containing_service=None,
+    input_type=_EMPTYMESSAGE,
+    output_type=_STRINGVALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='Features',
+    full_name='pb.Hub.Features',
+    index=6,
+    containing_service=None,
+    input_type=_EMPTYMESSAGE,
+    output_type=_STRINGVALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+  _descriptor.MethodDescriptor(
+    name='Broadcast',
+    full_name='pb.Hub.Broadcast',
+    index=7,
+    containing_service=None,
+    input_type=_EMPTYMESSAGE,
+    output_type=_UINT32VALUE,
+    serialized_options=None,
+    create_key=_descriptor._internal_create_key,
+  ),
+])
+_sym_db.RegisterServiceDescriptor(_HUB)
+
+DESCRIPTOR.services_by_name['Hub'] = _HUB
+
+# @@protoc_insertion_point(module_scope)

lbry/schema/types/v2/hub_pb2_grpc.py

@@ -0,0 +1,298 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+"""Client and server classes corresponding to protobuf-defined services."""
+import grpc
+
+from . import hub_pb2 as hub__pb2
+from . import result_pb2 as result__pb2
+
+
+class HubStub(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def __init__(self, channel):
+        """Constructor.
+
+        Args:
+            channel: A grpc.Channel.
+        """
+        self.Search = channel.unary_unary(
+                '/pb.Hub/Search',
+                request_serializer=hub__pb2.SearchRequest.SerializeToString,
+                response_deserializer=result__pb2.Outputs.FromString,
+                )
+        self.Ping = channel.unary_unary(
+                '/pb.Hub/Ping',
+                request_serializer=hub__pb2.EmptyMessage.SerializeToString,
+                response_deserializer=hub__pb2.StringValue.FromString,
+                )
+        self.Hello = channel.unary_unary(
+                '/pb.Hub/Hello',
+                request_serializer=hub__pb2.HelloMessage.SerializeToString,
+                response_deserializer=hub__pb2.HelloMessage.FromString,
+                )
+        self.AddPeer = channel.unary_unary(
+                '/pb.Hub/AddPeer',
+                request_serializer=hub__pb2.ServerMessage.SerializeToString,
+                response_deserializer=hub__pb2.StringValue.FromString,
+                )
+        self.PeerSubscribe = channel.unary_unary(
+                '/pb.Hub/PeerSubscribe',
+                request_serializer=hub__pb2.ServerMessage.SerializeToString,
+                response_deserializer=hub__pb2.StringValue.FromString,
+                )
+        self.Version = channel.unary_unary(
+                '/pb.Hub/Version',
+                request_serializer=hub__pb2.EmptyMessage.SerializeToString,
+                response_deserializer=hub__pb2.StringValue.FromString,
+                )
+        self.Features = channel.unary_unary(
+                '/pb.Hub/Features',
+                request_serializer=hub__pb2.EmptyMessage.SerializeToString,
+                response_deserializer=hub__pb2.StringValue.FromString,
+                )
+        self.Broadcast = channel.unary_unary(
+                '/pb.Hub/Broadcast',
+                request_serializer=hub__pb2.EmptyMessage.SerializeToString,
+                response_deserializer=hub__pb2.UInt32Value.FromString,
+                )
+
+
+class HubServicer(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def Search(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Ping(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Hello(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def AddPeer(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def PeerSubscribe(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Version(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Features(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Broadcast(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+
+def add_HubServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+            'Search': grpc.unary_unary_rpc_method_handler(
+                    servicer.Search,
+                    request_deserializer=hub__pb2.SearchRequest.FromString,
+                    response_serializer=result__pb2.Outputs.SerializeToString,
+            ),
+            'Ping': grpc.unary_unary_rpc_method_handler(
+                    servicer.Ping,
+                    request_deserializer=hub__pb2.EmptyMessage.FromString,
+                    response_serializer=hub__pb2.StringValue.SerializeToString,
+            ),
+            'Hello': grpc.unary_unary_rpc_method_handler(
+                    servicer.Hello,
+                    request_deserializer=hub__pb2.HelloMessage.FromString,
+                    response_serializer=hub__pb2.HelloMessage.SerializeToString,
+            ),
+            'AddPeer': grpc.unary_unary_rpc_method_handler(
+                    servicer.AddPeer,
+                    request_deserializer=hub__pb2.ServerMessage.FromString,
+                    response_serializer=hub__pb2.StringValue.SerializeToString,
+            ),
+            'PeerSubscribe': grpc.unary_unary_rpc_method_handler(
+                    servicer.PeerSubscribe,
+                    request_deserializer=hub__pb2.ServerMessage.FromString,
+                    response_serializer=hub__pb2.StringValue.SerializeToString,
+            ),
+            'Version': grpc.unary_unary_rpc_method_handler(
+                    servicer.Version,
+                    request_deserializer=hub__pb2.EmptyMessage.FromString,
+                    response_serializer=hub__pb2.StringValue.SerializeToString,
+            ),
+            'Features': grpc.unary_unary_rpc_method_handler(
+                    servicer.Features,
+                    request_deserializer=hub__pb2.EmptyMessage.FromString,
+                    response_serializer=hub__pb2.StringValue.SerializeToString,
+            ),
+            'Broadcast': grpc.unary_unary_rpc_method_handler(
+                    servicer.Broadcast,
+                    request_deserializer=hub__pb2.EmptyMessage.FromString,
+                    response_serializer=hub__pb2.UInt32Value.SerializeToString,
+            ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+            'pb.Hub', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+ # This class is part of an EXPERIMENTAL API.
+class Hub(object):
+    """Missing associated documentation comment in .proto file."""
+
+    @staticmethod
+    def Search(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Search',
+            hub__pb2.SearchRequest.SerializeToString,
+            result__pb2.Outputs.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Ping(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Ping',
+            hub__pb2.EmptyMessage.SerializeToString,
+            hub__pb2.StringValue.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Hello(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Hello',
+            hub__pb2.HelloMessage.SerializeToString,
+            hub__pb2.HelloMessage.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def AddPeer(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/AddPeer',
+            hub__pb2.ServerMessage.SerializeToString,
+            hub__pb2.StringValue.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def PeerSubscribe(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/PeerSubscribe',
+            hub__pb2.ServerMessage.SerializeToString,
+            hub__pb2.StringValue.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Version(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Version',
+            hub__pb2.EmptyMessage.SerializeToString,
+            hub__pb2.StringValue.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Features(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Features',
+            hub__pb2.EmptyMessage.SerializeToString,
+            hub__pb2.StringValue.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Broadcast(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/pb.Hub/Broadcast',
+            hub__pb2.EmptyMessage.SerializeToString,
+            hub__pb2.UInt32Value.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)

lbry/schema/types/v2/result_pb2_grpc.py

@@ -0,0 +1,4 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+"""Client and server classes corresponding to protobuf-defined services."""
+import grpc
+

lbry/schema/types/v2/wallet.json

@@ -1,139 +0,0 @@
-{
-  "title": "Wallet",
-  "description": "An LBC wallet",
-  "type": "object",
-  "required": ["name", "version", "accounts", "preferences"],
-  "additionalProperties": false,
-  "properties": {
-    "name": {
-      "description": "Human readable name for this wallet",
-      "type": "string"
-    },
-    "version": {
-      "description": "Wallet spec version",
-      "type": "integer",
-      "$comment": "Should this be a string? We may need some sort of decimal type if we want exact decimal versions."
-    },
-    "accounts": {
-      "description": "Accounts associated with this wallet",
-      "type": "array",
-      "items": {
-        "type": "object",
-        "required": ["address_generator", "certificates", "encrypted", "ledger", "modified_on", "name", "private_key", "public_key", "seed"],
-        "additionalProperties": false,
-        "properties": {
-          "address_generator": {
-            "description": "Higher level manager of either singular or deterministically generated addresses",
-            "type": "object",
-            "oneOf": [
-              {
-                "required": ["name", "change", "receiving"],
-                "additionalProperties": false,
-                "properties": {
-                  "name": {
-                    "description": "type of address generator: a deterministic chain of addresses",
-                    "enum": ["deterministic-chain"],
-                    "type": "string"
-                  },
-                  "change": {
-                    "$ref": "#/$defs/address_manager",
-                    "description": "Manager for deterministically generated change address (not used for single address)"
-                  },
-                  "receiving": {
-                    "$ref": "#/$defs/address_manager",
-                    "description": "Manager for deterministically generated receiving address (not used for single address)"
-                  }
-                }
-              }, {
-                "required": ["name"],
-                "additionalProperties": false,
-                "properties": {
-                  "name": {
-                    "description": "type of address generator: a single address",
-                    "enum": ["single-address"],
-                    "type": "string"
-                  }
-                }
-              }
-            ]
-          },
-          "certificates": {
-            "type": "object",
-            "description": "Channel keys. Mapping from public key address to pem-formatted private key.",
-            "additionalProperties": {"type": "string"}
-          },
-          "encrypted": {
-            "type": "boolean",
-            "description": "Whether private key and seed are encrypted with a password"
-          },
-          "ledger": {
-            "description": "Which network to use",
-            "type": "string",
-            "examples": [
-              "lbc_mainnet",
-              "lbc_testnet"
-            ]
-          },
-          "modified_on": {
-            "description": "last modified time in Unix Time",
-            "type": "integer"
-          },
-          "name": {
-            "description": "Name for account, possibly human readable",
-            "type": "string"
-          },
-          "private_key": {
-            "description": "Private key for address if `address_generator` is a single address. Root of chain of private keys for addresses if `address_generator` is a deterministic chain of addresses. Encrypted if `encrypted` is true.",
-            "type": "string"
-          },
-          "public_key": {
-            "description": "Public key for address if `address_generator` is a single address. Root of chain of public keys for addresses if `address_generator` is a deterministic chain of addresses.",
-            "type": "string"
-          },
-          "seed": {
-            "description": "Human readable representation of `private_key`. encrypted if `encrypted` is set to `true`",
-            "type": "string"
-          }
-        }
-      }
-    },
-    "preferences": {
-      "description": "Timestamped application-level preferences. Values can be objects or of a primitive type.",
-      "$comment": "enable-sync is seen in example wallet. encrypt-on-disk is seen in example wallet. they both have a boolean `value` field. Do we want them explicitly defined here? local and shared seem to have at least a similar structure (type, value [yes, again], version), value being the free-form part. Should we define those here? Or can there be any key under preferences, and `value` be literally be anything in any form?",
-      "type": "object",
-      "additionalProperties": {
-        "type": "object",
-        "required": ["ts", "value"],
-        "additionalProperties": false,
-        "properties": {
-          "ts": {
-            "type": "number",
-            "description": "When the item was set, in Unix time format.",
-            "$comment": "Do we want a string (decimal)?"
-          },
-          "value": {
-            "$comment": "Sometimes this has been an object, sometimes just a boolean. I don't want to prescribe anything."
-          }
-        }
-      }
-    }
-  },
-  "$defs": {
-    "address_manager": {
-      "description": "Manager for deterministically generated addresses",
-      "type": "object",
-      "required": ["gap", "maximum_uses_per_address"],
-      "additionalProperties": false,
-      "properties": {
-        "gap": {
-          "description": "Maximum allowed consecutive generated addresses with no transactions",
-          "type": "integer"
-        },
-        "maximum_uses_per_address": {
-          "description": "Maximum number of uses for each generated address",
-          "type": "integer"
-        }
-      }
-    }
-  }
-}

lbry/stream/background_downloader.py

@@ -23,7 +23,6 @@ class BackgroundDownloader:
         except ValueError:
             return
         except asyncio.CancelledError:
-            log.debug("Cancelled background downloader")
             raise
         except Exception:
             log.error("Unexpected download error on background downloader")

lbry/stream/descriptor.py

@@ -194,13 +194,12 @@ class StreamDescriptor:
             raise InvalidStreamDescriptorError("Stream terminator blob should not have a hash")
         if any(i != blob_info['blob_num'] for i, blob_info in enumerate(decoded['blobs'])):
             raise InvalidStreamDescriptorError("Stream contains out of order or skipped blobs")
-        added_on = time.time()
         descriptor = cls(
             loop, blob_dir,
             binascii.unhexlify(decoded['stream_name']).decode(),
             decoded['key'],
             binascii.unhexlify(decoded['suggested_file_name']).decode(),
-            [BlobInfo(info['blob_num'], info['length'], info['iv'], added_on, info.get('blob_hash'))
+            [BlobInfo(info['blob_num'], info['length'], info['iv'], info.get('blob_hash'))
              for info in decoded['blobs']],
             decoded['stream_hash'],
             blob.blob_hash
@@ -267,7 +266,7 @@ class StreamDescriptor:
             blobs.append(blob_info)
         blobs.append(
             # add the stream terminator
-            BlobInfo(len(blobs), 0, binascii.hexlify(next(iv_generator)).decode(), added_on, None, True)
+            BlobInfo(len(blobs), 0, binascii.hexlify(next(iv_generator)).decode(), None, added_on, True)
         )
         file_name = os.path.basename(file_path)
         suggested_file_name = sanitize_file_name(file_name)

lbry/stream/downloader.py

@@ -8,8 +8,6 @@ from lbry.error import DownloadSDTimeoutError
 from lbry.utils import lru_cache_concurrent
 from lbry.stream.descriptor import StreamDescriptor
 from lbry.blob_exchange.downloader import BlobDownloader
-from lbry.torrent.tracker import enqueue_tracker_search
-
 if typing.TYPE_CHECKING:
     from lbry.conf import Config
     from lbry.dht.node import Node
@@ -27,8 +25,8 @@ class StreamDownloader:
         self.config = config
         self.blob_manager = blob_manager
         self.sd_hash = sd_hash
-        self.search_queue = asyncio.Queue()     # blob hashes to feed into the iterative finder
+        self.search_queue = asyncio.Queue(loop=loop)     # blob hashes to feed into the iterative finder
-        self.peer_queue = asyncio.Queue()       # new peers to try
+        self.peer_queue = asyncio.Queue(loop=loop)       # new peers to try
         self.blob_downloader = BlobDownloader(self.loop, self.config, self.blob_manager, self.peer_queue)
         self.descriptor: typing.Optional[StreamDescriptor] = descriptor
         self.node: typing.Optional['Node'] = None
@@ -72,7 +70,7 @@ class StreamDownloader:
                 now = self.loop.time()
                 sd_blob = await asyncio.wait_for(
                     self.blob_downloader.download_blob(self.sd_hash, connection_id),
-                    self.config.blob_download_timeout
+                    self.config.blob_download_timeout, loop=self.loop
                 )
                 log.info("downloaded sd blob %s", self.sd_hash)
                 self.time_to_descriptor = self.loop.time() - now
@@ -93,7 +91,6 @@ class StreamDownloader:
                 self.accumulate_task.cancel()
             _, self.accumulate_task = self.node.accumulate_peers(self.search_queue, self.peer_queue)
         await self.add_fixed_peers()
-        enqueue_tracker_search(bytes.fromhex(self.sd_hash), self.peer_queue)
         # start searching for peers for the sd hash
         self.search_queue.put_nowait(self.sd_hash)
         log.info("searching for peers for stream %s", self.sd_hash)
@@ -101,6 +98,10 @@ class StreamDownloader:
         if not self.descriptor:
             await self.load_descriptor(connection_id)
 
+        # add the head blob to the peer search
+        self.search_queue.put_nowait(self.descriptor.blobs[0].blob_hash)
+        log.info("added head blob to peer search for stream %s", self.sd_hash)
+
         if not await self.blob_manager.storage.stream_exists(self.sd_hash) and save_stream:
             await self.blob_manager.storage.store_stream(
                 self.blob_manager.get_blob(self.sd_hash, length=self.descriptor.length), self.descriptor
@@ -111,7 +112,7 @@ class StreamDownloader:
             raise ValueError(f"blob {blob_info.blob_hash} is not part of stream with sd hash {self.sd_hash}")
         blob = await asyncio.wait_for(
             self.blob_downloader.download_blob(blob_info.blob_hash, blob_info.length, connection_id),
-            self.config.blob_download_timeout * 10
+            self.config.blob_download_timeout * 10, loop=self.loop
         )
         return blob
 

lbry/stream/managed_stream.py

@@ -16,8 +16,10 @@ from lbry.file.source import ManagedDownloadSource
 
 if typing.TYPE_CHECKING:
     from lbry.conf import Config
+    from lbry.schema.claim import Claim
     from lbry.blob.blob_manager import BlobManager
     from lbry.blob.blob_info import BlobInfo
+    from lbry.dht.node import Node
     from lbry.extras.daemon.analytics import AnalyticsManager
     from lbry.wallet.transaction import Transaction
 
@@ -60,9 +62,9 @@ class ManagedStream(ManagedDownloadSource):
         self.file_output_task: typing.Optional[asyncio.Task] = None
         self.delayed_stop_task: typing.Optional[asyncio.Task] = None
         self.streaming_responses: typing.List[typing.Tuple[Request, StreamResponse]] = []
-        self.fully_reflected = asyncio.Event()
+        self.fully_reflected = asyncio.Event(loop=self.loop)
-        self.streaming = asyncio.Event()
+        self.streaming = asyncio.Event(loop=self.loop)
-        self._running = asyncio.Event()
+        self._running = asyncio.Event(loop=self.loop)
 
     @property
     def sd_hash(self) -> str:
@@ -82,19 +84,7 @@ class ManagedStream(ManagedDownloadSource):
 
     @property
     def file_name(self) -> Optional[str]:
-        return self._file_name or self.suggested_file_name
+        return self._file_name or (self.descriptor.suggested_file_name if self.descriptor else None)
-
-    @property
-    def suggested_file_name(self) -> Optional[str]:
-        first_option = ((self.descriptor and self.descriptor.suggested_file_name) or '').strip()
-        return sanitize_file_name(first_option or (self.stream_claim_info and self.stream_claim_info.claim and
-                                                   self.stream_claim_info.claim.stream.source.name))
-
-    @property
-    def stream_name(self) -> Optional[str]:
-        first_option = ((self.descriptor and self.descriptor.stream_name) or '').strip()
-        return first_option or (self.stream_claim_info and self.stream_claim_info.claim and
-                                self.stream_claim_info.claim.stream.source.name)
 
     @property
     def written_bytes(self) -> int:
@@ -128,7 +118,7 @@ class ManagedStream(ManagedDownloadSource):
 
     @property
     def mime_type(self):
-        return guess_media_type(os.path.basename(self.suggested_file_name))[0]
+        return guess_media_type(os.path.basename(self.descriptor.suggested_file_name))[0]
 
     @property
     def download_path(self):
@@ -161,7 +151,7 @@ class ManagedStream(ManagedDownloadSource):
         log.info("start downloader for stream (sd hash: %s)", self.sd_hash)
         self._running.set()
         try:
-            await asyncio.wait_for(self.downloader.start(), timeout)
+            await asyncio.wait_for(self.downloader.start(), timeout, loop=self.loop)
         except asyncio.TimeoutError:
             self._running.clear()
             raise DownloadSDTimeoutError(self.sd_hash)
@@ -174,7 +164,7 @@ class ManagedStream(ManagedDownloadSource):
                 if not self._file_name:
                     self._file_name = await get_next_available_file_name(
                         self.loop, self.download_directory,
-                        self._file_name or sanitize_file_name(self.suggested_file_name)
+                        self._file_name or sanitize_file_name(self.descriptor.suggested_file_name)
                     )
                 file_name, download_dir = self._file_name, self.download_directory
             else:
@@ -191,7 +181,7 @@ class ManagedStream(ManagedDownloadSource):
         Stop any running save/stream tasks as well as the downloader and update the status in the database
         """
 
-        await self.stop_tasks()
+        self.stop_tasks()
         if (finished and self.status != self.STATUS_FINISHED) or self.status == self.STATUS_RUNNING:
             await self.update_status(self.STATUS_FINISHED if finished else self.STATUS_STOPPED)
 
@@ -279,7 +269,7 @@ class ManagedStream(ManagedDownloadSource):
             log.info("finished saving file for lbry://%s#%s (sd hash %s...) -> %s", self.claim_name, self.claim_id,
                      self.sd_hash[:6], self.full_path)
             await self.blob_manager.storage.set_saved_file(self.stream_hash)
-        except (Exception, asyncio.CancelledError) as err:
+        except Exception as err:
             if os.path.isfile(output_path):
                 log.warning("removing incomplete download %s for %s", output_path, self.sd_hash)
                 os.remove(output_path)
@@ -306,14 +296,14 @@ class ManagedStream(ManagedDownloadSource):
         self.download_directory = download_directory or self.download_directory or self.config.download_dir
         if not self.download_directory:
             raise ValueError("no directory to download to")
-        if not (file_name or self._file_name or self.suggested_file_name):
+        if not (file_name or self._file_name or self.descriptor.suggested_file_name):
             raise ValueError("no file name to download to")
         if not os.path.isdir(self.download_directory):
             log.warning("download directory '%s' does not exist, attempting to make it", self.download_directory)
             os.mkdir(self.download_directory)
         self._file_name = await get_next_available_file_name(
             self.loop, self.download_directory,
-            file_name or self._file_name or sanitize_file_name(self.suggested_file_name)
+            file_name or self._file_name or sanitize_file_name(self.descriptor.suggested_file_name)
         )
         await self.blob_manager.storage.change_file_download_dir_and_file_name(
             self.stream_hash, self.download_directory, self.file_name
@@ -321,16 +311,15 @@ class ManagedStream(ManagedDownloadSource):
         await self.update_status(ManagedStream.STATUS_RUNNING)
         self.file_output_task = self.loop.create_task(self._save_file(self.full_path))
         try:
-            await asyncio.wait_for(self.started_writing.wait(), self.config.download_timeout)
+            await asyncio.wait_for(self.started_writing.wait(), self.config.download_timeout, loop=self.loop)
         except asyncio.TimeoutError:
             log.warning("timeout starting to write data for lbry://%s#%s", self.claim_name, self.claim_id)
-            await self.stop_tasks()
+            self.stop_tasks()
             await self.update_status(ManagedStream.STATUS_STOPPED)
 
-    async def stop_tasks(self):
+    def stop_tasks(self):
         if self.file_output_task and not self.file_output_task.done():
             self.file_output_task.cancel()
-            await asyncio.gather(self.file_output_task, return_exceptions=True)
         self.file_output_task = None
         while self.streaming_responses:
             req, response = self.streaming_responses.pop()
@@ -367,7 +356,7 @@ class ManagedStream(ManagedDownloadSource):
             return sent
         except ConnectionError:
             return sent
-        except (OSError, Exception, asyncio.CancelledError) as err:
+        except (OSError, Exception) as err:
             if isinstance(err, asyncio.CancelledError):
                 log.warning("stopped uploading %s#%s to reflector", self.claim_name, self.claim_id)
             elif isinstance(err, OSError):
@@ -402,7 +391,7 @@ class ManagedStream(ManagedDownloadSource):
                          self.sd_hash[:6])
                 await self.stop()
                 return
-            await asyncio.sleep(1)
+            await asyncio.sleep(1, loop=self.loop)
 
     def _prepare_range_response_headers(self, get_range: str) -> typing.Tuple[typing.Dict[str, str], int, int, int]:
         if '=' in get_range:

lbry/stream/reflector/server.py

@@ -21,7 +21,7 @@ class ReflectorServerProtocol(asyncio.Protocol):
         self.loop = asyncio.get_event_loop()
         self.blob_manager = blob_manager
         self.server_task: asyncio.Task = None
-        self.started_listening = asyncio.Event()
+        self.started_listening = asyncio.Event(loop=self.loop)
         self.buf = b''
         self.transport: asyncio.StreamWriter = None
         self.writer: typing.Optional['HashBlobWriter'] = None
@@ -29,9 +29,9 @@ class ReflectorServerProtocol(asyncio.Protocol):
         self.descriptor: typing.Optional['StreamDescriptor'] = None
         self.sd_blob: typing.Optional['BlobFile'] = None
         self.received = []
-        self.incoming = incoming_event or asyncio.Event()
+        self.incoming = incoming_event or asyncio.Event(loop=self.loop)
-        self.not_incoming = not_incoming_event or asyncio.Event()
+        self.not_incoming = not_incoming_event or asyncio.Event(loop=self.loop)
-        self.stop_event = stop_event or asyncio.Event()
+        self.stop_event = stop_event or asyncio.Event(loop=self.loop)
         self.chunk_size = response_chunk_size
         self.wait_for_stop_task: typing.Optional[asyncio.Task] = None
         self.partial_event = partial_event
@@ -94,7 +94,7 @@ class ReflectorServerProtocol(asyncio.Protocol):
                 self.incoming.set()
                 self.send_response({"send_sd_blob": True})
                 try:
-                    await asyncio.wait_for(self.sd_blob.verified.wait(), 30)
+                    await asyncio.wait_for(self.sd_blob.verified.wait(), 30, loop=self.loop)
                     self.descriptor = await StreamDescriptor.from_stream_descriptor_blob(
                         self.loop, self.blob_manager.blob_dir, self.sd_blob
                     )
@@ -140,7 +140,7 @@ class ReflectorServerProtocol(asyncio.Protocol):
                 self.incoming.set()
                 self.send_response({"send_blob": True})
                 try:
-                    await asyncio.wait_for(blob.verified.wait(), 30)
+                    await asyncio.wait_for(blob.verified.wait(), 30, loop=self.loop)
                     self.send_response({"received_blob": True})
                 except asyncio.TimeoutError:
                     self.send_response({"received_blob": False})
@@ -162,10 +162,10 @@ class ReflectorServer:
         self.loop = asyncio.get_event_loop()
         self.blob_manager = blob_manager
         self.server_task: typing.Optional[asyncio.Task] = None
-        self.started_listening = asyncio.Event()
+        self.started_listening = asyncio.Event(loop=self.loop)
-        self.stopped_listening = asyncio.Event()
+        self.stopped_listening = asyncio.Event(loop=self.loop)
-        self.incoming_event = incoming_event or asyncio.Event()
+        self.incoming_event = incoming_event or asyncio.Event(loop=self.loop)
-        self.not_incoming_event = not_incoming_event or asyncio.Event()
+        self.not_incoming_event = not_incoming_event or asyncio.Event(loop=self.loop)
         self.response_chunk_size = response_chunk_size
         self.stop_event = stop_event
         self.partial_needs = partial_needs  # for testing cases where it doesn't know what it wants

lbry/stream/stream_manager.py

@@ -54,7 +54,7 @@ class StreamManager(SourceManager):
         self.re_reflect_task: Optional[asyncio.Task] = None
         self.update_stream_finished_futs: typing.List[asyncio.Future] = []
         self.running_reflector_uploads: typing.Dict[str, asyncio.Task] = {}
-        self.started = asyncio.Event()
+        self.started = asyncio.Event(loop=self.loop)
 
     @property
     def streams(self):
@@ -70,7 +70,6 @@ class StreamManager(SourceManager):
 
     async def recover_streams(self, file_infos: typing.List[typing.Dict]):
         to_restore = []
-        to_check = []
 
         async def recover_stream(sd_hash: str, stream_hash: str, stream_name: str,
                                  suggested_file_name: str, key: str,
@@ -83,7 +82,6 @@ class StreamManager(SourceManager):
             if not descriptor:
                 return
             to_restore.append((descriptor, sd_blob, content_fee))
-            to_check.extend([sd_blob.blob_hash] + [blob.blob_hash for blob in descriptor.blobs[:-1]])
 
         await asyncio.gather(*[
             recover_stream(
@@ -95,8 +93,6 @@ class StreamManager(SourceManager):
 
         if to_restore:
             await self.storage.recover_streams(to_restore, self.config.download_dir)
-        if to_check:
-            await self.blob_manager.ensure_completed_blobs_status(to_check)
 
         # if self.blob_manager._save_blobs:
         #     log.info("Recovered %i/%i attempted streams", len(to_restore), len(file_infos))
@@ -150,7 +146,7 @@ class StreamManager(SourceManager):
                 file_info['added_on'], file_info['fully_reflected']
             )))
         if add_stream_tasks:
-            await asyncio.gather(*add_stream_tasks)
+            await asyncio.gather(*add_stream_tasks, loop=self.loop)
         log.info("Started stream manager with %i files", len(self._sources))
         if not self.node:
             log.info("no DHT node given, resuming downloads trusting that we can contact reflector")
@@ -159,11 +155,14 @@ class StreamManager(SourceManager):
             self.resume_saving_task = asyncio.ensure_future(asyncio.gather(
                 *(self._sources[sd_hash].save_file(file_name, download_directory)
                   for (file_name, download_directory, sd_hash) in to_resume_saving),
+                loop=self.loop
             ))
 
     async def reflect_streams(self):
         try:
             return await self._reflect_streams()
+        except asyncio.CancelledError:
+            raise
         except Exception:
             log.exception("reflector task encountered an unexpected error!")
 
@@ -183,21 +182,21 @@ class StreamManager(SourceManager):
                         batch.append(self.reflect_stream(stream))
                     if len(batch) >= self.config.concurrent_reflector_uploads:
                         log.debug("waiting for batch of %s reflecting streams", len(batch))
-                        await asyncio.gather(*batch)
+                        await asyncio.gather(*batch, loop=self.loop)
                         log.debug("done processing %s streams", len(batch))
                         batch = []
                 if batch:
                     log.debug("waiting for batch of %s reflecting streams", len(batch))
-                    await asyncio.gather(*batch)
+                    await asyncio.gather(*batch, loop=self.loop)
                     log.debug("done processing %s streams", len(batch))
-            await asyncio.sleep(300)
+            await asyncio.sleep(300, loop=self.loop)
 
     async def start(self):
         await super().start()
         self.re_reflect_task = self.loop.create_task(self.reflect_streams())
 
-    async def stop(self):
+    def stop(self):
-        await super().stop()
+        super().stop()
         if self.resume_saving_task and not self.resume_saving_task.done():
             self.resume_saving_task.cancel()
         if self.re_reflect_task and not self.re_reflect_task.done():
@@ -224,8 +223,7 @@ class StreamManager(SourceManager):
         )
         return task
 
-    @staticmethod
+    async def _retriable_reflect_stream(self, stream, host, port):
-    async def _retriable_reflect_stream(stream, host, port):
         sent = await stream.upload_to_reflector(host, port)
         while not stream.is_fully_reflected and stream.reflector_progress > 0 and len(sent) > 0:
             stream.reflector_progress = 0
@@ -260,7 +258,7 @@ class StreamManager(SourceManager):
             return
         if source.identifier in self.running_reflector_uploads:
             self.running_reflector_uploads[source.identifier].cancel()
-        await source.stop_tasks()
+        source.stop_tasks()
         if source.identifier in self.streams:
             del self.streams[source.identifier]
         blob_hashes = [source.identifier] + [b.blob_hash for b in source.descriptor.blobs[:-1]]

lbry/testcase.py

@@ -19,7 +19,7 @@ from lbry.conf import Config
 from lbry.wallet.util import satoshis_to_coins
 from lbry.wallet.dewies import lbc_to_dewies
 from lbry.wallet.orchstr8 import Conductor
-from lbry.wallet.orchstr8.node import LBCWalletNode, WalletNode
+from lbry.wallet.orchstr8.node import LBCWalletNode, WalletNode, HubNode
 from lbry.schema.claim import Claim
 
 from lbry.extras.daemon.daemon import Daemon, jsonrpc_dumps_pretty
@@ -204,13 +204,7 @@ class AsyncioTestCase(unittest.TestCase):
 
     def add_timeout(self):
         if self.TIMEOUT:
-            self.loop.call_later(self.TIMEOUT, self.check_timeout, time())
+            self.loop.call_later(self.TIMEOUT, self.cancel)
-
-    def check_timeout(self, started):
-        if time() - started >= self.TIMEOUT:
-            self.cancel()
-        else:
-            self.loop.call_later(self.TIMEOUT, self.check_timeout, started)
 
 
 class AdvanceTimeTestCase(AsyncioTestCase):
@@ -237,6 +231,7 @@ class IntegrationTestCase(AsyncioTestCase):
         super().__init__(*args, **kwargs)
         self.conductor: Optional[Conductor] = None
         self.blockchain: Optional[LBCWalletNode] = None
+        self.hub: Optional[HubNode] = None
         self.wallet_node: Optional[WalletNode] = None
         self.manager: Optional[WalletManager] = None
         self.ledger: Optional[Ledger] = None
@@ -253,7 +248,10 @@ class IntegrationTestCase(AsyncioTestCase):
         self.addCleanup(self.conductor.stop_spv)
         await self.conductor.start_wallet()
         self.addCleanup(self.conductor.stop_wallet)
+        await self.conductor.start_hub()
+        self.addCleanup(self.conductor.stop_hub)
         self.blockchain = self.conductor.lbcwallet_node
+        self.hub = self.conductor.hub_node
         self.wallet_node = self.conductor.wallet_node
         self.manager = self.wallet_node.manager
         self.ledger = self.wallet_node.ledger
@@ -301,7 +299,7 @@ class IntegrationTestCase(AsyncioTestCase):
             watcher = (ledger or self.ledger).on_transaction.where(
                 lambda e: ((e.tx.id in txids and txids.remove(e.tx.id)), len(txids) <= 0)[-1]  # multi-statement lambda
             )
-            await self.generate(blocks_to_generate)
+            await self.blockchain.generate(blocks_to_generate)
             await watcher
 
     def on_address_update(self, address):
@@ -319,16 +317,8 @@ class IntegrationTestCase(AsyncioTestCase):
         prepare = self.ledger.on_header.where(self.blockchain.is_expected_block)
         self.conductor.spv_node.server.synchronized.clear()
         await self.blockchain.generate(blocks)
-        height = self.blockchain.block_expected
         await prepare  # no guarantee that it didn't happen already, so start waiting from before calling generate
-        while True:
+        await self.conductor.spv_node.server.synchronized.wait()
-            await self.conductor.spv_node.server.synchronized.wait()
-            self.conductor.spv_node.server.synchronized.clear()
-            if self.conductor.spv_node.server.db.db_height < height:
-                continue
-            if self.conductor.spv_node.server._es_height < height:
-                continue
-            break
 
 
 class FakeExchangeRateManager(ExchangeRateManager):

lbry/torrent/session.py

@@ -10,13 +10,47 @@ from typing import Optional
 import libtorrent
 
 
+NOTIFICATION_MASKS = [
+    "error",
+    "peer",
+    "port_mapping",
+    "storage",
+    "tracker",
+    "debug",
+    "status",
+    "progress",
+    "ip_block",
+    "dht",
+    "stats",
+    "session_log",
+    "torrent_log",
+    "peer_log",
+    "incoming_request",
+    "dht_log",
+    "dht_operation",
+    "port_mapping_log",
+    "picker_log",
+    "file_progress",
+    "piece_progress",
+    "upload",
+    "block_progress"
+]
 log = logging.getLogger(__name__)
+
+
 DEFAULT_FLAGS = (  # fixme: somehow the logic here is inverted?
         libtorrent.add_torrent_params_flags_t.flag_auto_managed
         | libtorrent.add_torrent_params_flags_t.flag_update_subscribe
 )
 
 
+def get_notification_type(notification) -> str:
+    for i, notification_type in enumerate(NOTIFICATION_MASKS):
+        if (1 << i) & notification:
+            return notification_type
+    raise ValueError("unrecognized notification type")
+
+
 class TorrentHandle:
     def __init__(self, loop, executor, handle):
         self._loop = loop
@@ -87,7 +121,7 @@ class TorrentHandle:
             self._show_status()
             if self.finished.is_set():
                 break
-            await asyncio.sleep(0.1)
+            await asyncio.sleep(0.1, loop=self._loop)
 
     async def pause(self):
         await self._loop.run_in_executor(
@@ -122,8 +156,10 @@ class TorrentSession:
     async def bind(self, interface: str = '0.0.0.0', port: int = 10889):
         settings = {
             'listen_interfaces': f"{interface}:{port}",
-            'enable_natpmp': False,
+            'enable_outgoing_utp': True,
-            'enable_upnp': False
+            'enable_incoming_utp': True,
+            'enable_outgoing_tcp': False,
+            'enable_incoming_tcp': False
         }
         self._session = await self._loop.run_in_executor(
             self._executor, libtorrent.session, settings  # pylint: disable=c-extension-no-member
@@ -150,7 +186,7 @@ class TorrentSession:
             await self._loop.run_in_executor(
                 self._executor, self._pop_alerts
             )
-            await asyncio.sleep(1)
+            await asyncio.sleep(1, loop=self._loop)
 
     async def pause(self):
         await self._loop.run_in_executor(

lbry/torrent/torrent.py

@@ -36,7 +36,7 @@ class Torrent:
     def __init__(self, loop, handle):
         self._loop = loop
         self._handle = handle
-        self.finished = asyncio.Event()
+        self.finished = asyncio.Event(loop=loop)
 
     def _threaded_update_status(self):
         status = self._handle.status()
@@ -58,7 +58,7 @@ class Torrent:
                 log.info("finished downloading torrent!")
                 await self.pause()
                 break
-            await asyncio.sleep(1)
+            await asyncio.sleep(1, loop=self._loop)
 
     async def pause(self):
         log.info("pause torrent")

lbry/torrent/torrent_manager.py

@@ -74,7 +74,7 @@ class TorrentSource(ManagedDownloadSource):
     def bt_infohash(self):
         return self.identifier
 
-    async def stop_tasks(self):
+    def stop_tasks(self):
         pass
 
     @property
@@ -118,8 +118,8 @@ class TorrentManager(SourceManager):
     async def start(self):
         await super().start()
 
-    async def stop(self):
+    def stop(self):
-        await super().stop()
+        super().stop()
         log.info("finished stopping the torrent manager")
 
     async def delete(self, source: ManagedDownloadSource, delete_file: Optional[bool] = False):

lbry/torrent/tracker.py

@@ -1,285 +0,0 @@
-import random
-import socket
-import string
-import struct
-import asyncio
-import logging
-import time
-import ipaddress
-from collections import namedtuple
-from functools import reduce
-from typing import Optional
-
-from lbry.dht.node import get_kademlia_peers_from_hosts
-from lbry.utils import resolve_host, async_timed_cache, cache_concurrent
-from lbry.wallet.stream import StreamController
-from lbry import version
-
-log = logging.getLogger(__name__)
-CONNECTION_EXPIRES_AFTER_SECONDS = 50
-PREFIX = 'LB'  # todo: PR BEP20 to add ourselves
-DEFAULT_TIMEOUT_SECONDS = 10.0
-DEFAULT_CONCURRENCY_LIMIT = 100
-# see: http://bittorrent.org/beps/bep_0015.html and http://xbtt.sourceforge.net/udp_tracker_protocol.html
-ConnectRequest = namedtuple("ConnectRequest", ["connection_id", "action", "transaction_id"])
-ConnectResponse = namedtuple("ConnectResponse", ["action", "transaction_id", "connection_id"])
-AnnounceRequest = namedtuple("AnnounceRequest",
-                             ["connection_id", "action", "transaction_id", "info_hash", "peer_id", "downloaded", "left",
-                              "uploaded", "event", "ip_addr", "key", "num_want", "port"])
-AnnounceResponse = namedtuple("AnnounceResponse",
-                              ["action", "transaction_id", "interval", "leechers", "seeders", "peers"])
-CompactIPv4Peer = namedtuple("CompactPeer", ["address", "port"])
-ScrapeRequest = namedtuple("ScrapeRequest", ["connection_id", "action", "transaction_id", "infohashes"])
-ScrapeResponse = namedtuple("ScrapeResponse", ["action", "transaction_id", "items"])
-ScrapeResponseItem = namedtuple("ScrapeResponseItem", ["seeders", "completed", "leechers"])
-ErrorResponse = namedtuple("ErrorResponse", ["action", "transaction_id", "message"])
-structs = {
-    ConnectRequest: struct.Struct(">QII"),
-    ConnectResponse: struct.Struct(">IIQ"),
-    AnnounceRequest: struct.Struct(">QII20s20sQQQIIIiH"),
-    AnnounceResponse: struct.Struct(">IIIII"),
-    CompactIPv4Peer: struct.Struct(">IH"),
-    ScrapeRequest: struct.Struct(">QII"),
-    ScrapeResponse: struct.Struct(">II"),
-    ScrapeResponseItem: struct.Struct(">III"),
-    ErrorResponse: struct.Struct(">II")
-}
-
-
-def decode(cls, data, offset=0):
-    decoder = structs[cls]
-    if cls is AnnounceResponse:
-        return AnnounceResponse(*decoder.unpack_from(data, offset),
-                                peers=[decode(CompactIPv4Peer, data, index) for index in range(20, len(data), 6)])
-    elif cls is ScrapeResponse:
-        return ScrapeResponse(*decoder.unpack_from(data, offset),
-                              items=[decode(ScrapeResponseItem, data, index) for index in range(8, len(data), 12)])
-    elif cls is ErrorResponse:
-        return ErrorResponse(*decoder.unpack_from(data, offset), data[decoder.size:])
-    return cls(*decoder.unpack_from(data, offset))
-
-
-def encode(obj):
-    if isinstance(obj, ScrapeRequest):
-        return structs[ScrapeRequest].pack(*obj[:-1]) + b''.join(obj.infohashes)
-    elif isinstance(obj, ErrorResponse):
-        return structs[ErrorResponse].pack(*obj[:-1]) + obj.message
-    elif isinstance(obj, AnnounceResponse):
-        return structs[AnnounceResponse].pack(*obj[:-1]) + b''.join([encode(peer) for peer in obj.peers])
-    return structs[type(obj)].pack(*obj)
-
-
-def make_peer_id(random_part: Optional[str] = None) -> bytes:
-    # see https://wiki.theory.org/BitTorrentSpecification#peer_id and https://www.bittorrent.org/beps/bep_0020.html
-    # not to confuse with node id; peer id identifies uniquely the software, version and instance
-    random_part = random_part or ''.join(random.choice(string.ascii_letters) for _ in range(20))
-    return f"{PREFIX}-{'-'.join(map(str, version))}-{random_part}"[:20].encode()
-
-
-class UDPTrackerClientProtocol(asyncio.DatagramProtocol):
-    def __init__(self, timeout: float = DEFAULT_TIMEOUT_SECONDS):
-        self.transport = None
-        self.data_queue = {}
-        self.timeout = timeout
-        self.semaphore = asyncio.Semaphore(DEFAULT_CONCURRENCY_LIMIT)
-
-    def connection_made(self, transport: asyncio.DatagramTransport) -> None:
-        self.transport = transport
-
-    async def request(self, obj, tracker_ip, tracker_port):
-        self.data_queue[obj.transaction_id] = asyncio.get_running_loop().create_future()
-        try:
-            async with self.semaphore:
-                self.transport.sendto(encode(obj), (tracker_ip, tracker_port))
-                return await asyncio.wait_for(self.data_queue[obj.transaction_id], self.timeout)
-        finally:
-            self.data_queue.pop(obj.transaction_id, None)
-
-    async def connect(self, tracker_ip, tracker_port):
-        transaction_id = random.getrandbits(32)
-        return decode(ConnectResponse,
-                      await self.request(ConnectRequest(0x41727101980, 0, transaction_id), tracker_ip, tracker_port))
-
-    @cache_concurrent
-    @async_timed_cache(CONNECTION_EXPIRES_AFTER_SECONDS)
-    async def ensure_connection_id(self, peer_id, tracker_ip, tracker_port):
-        # peer_id is just to ensure cache coherency
-        return (await self.connect(tracker_ip, tracker_port)).connection_id
-
-    async def announce(self, info_hash, peer_id, port, tracker_ip, tracker_port, stopped=False):
-        connection_id = await self.ensure_connection_id(peer_id, tracker_ip, tracker_port)
-        # this should make the key deterministic but unique per info hash + peer id
-        key = int.from_bytes(info_hash[:4], "big") ^ int.from_bytes(peer_id[:4], "big") ^ port
-        transaction_id = random.getrandbits(32)
-        req = AnnounceRequest(
-            connection_id, 1, transaction_id, info_hash, peer_id, 0, 0, 0, 3 if stopped else 1, 0, key, -1, port)
-        return decode(AnnounceResponse, await self.request(req, tracker_ip, tracker_port))
-
-    async def scrape(self, infohashes, tracker_ip, tracker_port, connection_id=None):
-        connection_id = await self.ensure_connection_id(None, tracker_ip, tracker_port)
-        transaction_id = random.getrandbits(32)
-        reply = await self.request(
-            ScrapeRequest(connection_id, 2, transaction_id, infohashes), tracker_ip, tracker_port)
-        return decode(ScrapeResponse, reply), connection_id
-
-    def datagram_received(self, data: bytes, addr: (str, int)) -> None:
-        if len(data) < 8:
-            return
-        transaction_id = int.from_bytes(data[4:8], byteorder="big", signed=False)
-        if transaction_id in self.data_queue:
-            if not self.data_queue[transaction_id].done():
-                if data[3] == 3:
-                    return self.data_queue[transaction_id].set_exception(Exception(decode(ErrorResponse, data).message))
-                return self.data_queue[transaction_id].set_result(data)
-        log.debug("unexpected packet (can be a response for a previously timed out request): %s", data.hex())
-
-    def connection_lost(self, exc: Exception = None) -> None:
-        self.transport = None
-
-
-class TrackerClient:
-    event_controller = StreamController()
-
-    def __init__(self, node_id, announce_port, get_servers, timeout=10.0):
-        self.client = UDPTrackerClientProtocol(timeout=timeout)
-        self.transport = None
-        self.peer_id = make_peer_id(node_id.hex() if node_id else None)
-        self.announce_port = announce_port
-        self._get_servers = get_servers
-        self.results = {}  # we can't probe the server before the interval, so we keep the result here until it expires
-        self.tasks = {}
-
-    async def start(self):
-        self.transport, _ = await asyncio.get_running_loop().create_datagram_endpoint(
-            lambda: self.client, local_addr=("0.0.0.0", 0))
-        self.event_controller.stream.listen(
-            lambda request: self.on_hash(request[1], request[2]) if request[0] == 'search' else None)
-
-    def stop(self):
-        while self.tasks:
-            self.tasks.popitem()[1].cancel()
-        if self.transport is not None:
-            self.transport.close()
-        self.client = None
-        self.transport = None
-        self.event_controller.close()
-
-    def on_hash(self, info_hash, on_announcement=None):
-        if info_hash not in self.tasks:
-            task = asyncio.create_task(self.get_peer_list(info_hash, on_announcement=on_announcement))
-            task.add_done_callback(lambda *_: self.tasks.pop(info_hash, None))
-            self.tasks[info_hash] = task
-
-    async def announce_many(self, *info_hashes, stopped=False):
-        await asyncio.gather(
-            *[self._announce_many(server, info_hashes, stopped=stopped) for server in self._get_servers()],
-            return_exceptions=True)
-
-    async def _announce_many(self, server, info_hashes, stopped=False):
-        tracker_ip = await resolve_host(*server, 'udp')
-        still_good_info_hashes = {
-            info_hash for (info_hash, (next_announcement, _)) in self.results.get(tracker_ip, {}).items()
-            if time.time() < next_announcement
-        }
-        results = await asyncio.gather(
-            *[self._probe_server(info_hash, tracker_ip, server[1], stopped=stopped)
-              for info_hash in info_hashes if info_hash not in still_good_info_hashes],
-            return_exceptions=True)
-        if results:
-            errors = sum([1 for result in results if result is None or isinstance(result, Exception)])
-            log.info("Tracker: finished announcing %d files to %s:%d, %d errors", len(results), *server, errors)
-
-    async def get_peer_list(self, info_hash, stopped=False, on_announcement=None, no_port=False):
-        found = []
-        probes = [self._probe_server(info_hash, *server, stopped, no_port) for server in self._get_servers()]
-        for done in asyncio.as_completed(probes):
-            result = await done
-            if result is not None:
-                await asyncio.gather(*filter(asyncio.iscoroutine, [on_announcement(result)] if on_announcement else []))
-                found.append(result)
-        return found
-
-    async def get_kademlia_peer_list(self, info_hash):
-        responses = await self.get_peer_list(info_hash, no_port=True)
-        return await announcement_to_kademlia_peers(*responses)
-
-    async def _probe_server(self, info_hash, tracker_host, tracker_port, stopped=False, no_port=False):
-        result = None
-        try:
-            tracker_host = await resolve_host(tracker_host, tracker_port, 'udp')
-        except socket.error:
-            log.warning("DNS failure while resolving tracker host: %s, skipping.", tracker_host)
-            return
-        self.results.setdefault(tracker_host, {})
-        if info_hash in self.results[tracker_host]:
-            next_announcement, result = self.results[tracker_host][info_hash]
-            if time.time() < next_announcement:
-                return result
-        try:
-            result = await self.client.announce(
-                info_hash, self.peer_id, 0 if no_port else self.announce_port, tracker_host, tracker_port, stopped)
-            self.results[tracker_host][info_hash] = (time.time() + result.interval, result)
-        except asyncio.TimeoutError:  # todo: this is UDP, timeout is common, we need a better metric for failures
-            self.results[tracker_host][info_hash] = (time.time() + 60.0, result)
-            log.debug("Tracker timed out: %s:%d", tracker_host, tracker_port)
-            return None
-        log.debug("Announced: %s found %d peers for %s", tracker_host, len(result.peers), info_hash.hex()[:8])
-        return result
-
-
-def enqueue_tracker_search(info_hash: bytes, peer_q: asyncio.Queue):
-    async def on_announcement(announcement: AnnounceResponse):
-        peers = await announcement_to_kademlia_peers(announcement)
-        log.info("Found %d peers from tracker for %s", len(peers), info_hash.hex()[:8])
-        peer_q.put_nowait(peers)
-    TrackerClient.event_controller.add(('search', info_hash, on_announcement))
-
-
-def announcement_to_kademlia_peers(*announcements: AnnounceResponse):
-    peers = [
-        (str(ipaddress.ip_address(peer.address)), peer.port)
-        for announcement in announcements for peer in announcement.peers if peer.port > 1024  # no privileged or 0
-    ]
-    return get_kademlia_peers_from_hosts(peers)
-
-
-class UDPTrackerServerProtocol(asyncio.DatagramProtocol):  # for testing. Not suitable for production
-    def __init__(self):
-        self.transport = None
-        self.known_conns = set()
-        self.peers = {}
-
-    def connection_made(self, transport: asyncio.DatagramTransport) -> None:
-        self.transport = transport
-
-    def add_peer(self, info_hash, ip_address: str, port: int):
-        self.peers.setdefault(info_hash, [])
-        self.peers[info_hash].append(encode_peer(ip_address, port))
-
-    def datagram_received(self, data: bytes, addr: (str, int)) -> None:
-        if len(data) < 16:
-            return
-        action = int.from_bytes(data[8:12], "big", signed=False)
-        if action == 0:
-            req = decode(ConnectRequest, data)
-            connection_id = random.getrandbits(32)
-            self.known_conns.add(connection_id)
-            return self.transport.sendto(encode(ConnectResponse(0, req.transaction_id, connection_id)), addr)
-        elif action == 1:
-            req = decode(AnnounceRequest, data)
-            if req.connection_id not in self.known_conns:
-                resp = encode(ErrorResponse(3, req.transaction_id, b'Connection ID missmatch.\x00'))
-            else:
-                compact_address = encode_peer(addr[0], req.port)
-                if req.event != 3:
-                    self.add_peer(req.info_hash, addr[0], req.port)
-                elif compact_address in self.peers.get(req.info_hash, []):
-                    self.peers[req.info_hash].remove(compact_address)
-                peers = [decode(CompactIPv4Peer, peer) for peer in self.peers[req.info_hash]]
-                resp = encode(AnnounceResponse(1, req.transaction_id, 1700, 0, len(peers), peers))
-            return self.transport.sendto(resp, addr)
-
-
-def encode_peer(ip_address: str, port: int):
-    compact_ip = reduce(lambda buff, x: buff + bytearray([int(x)]), ip_address.split('.'), bytearray())
-    return compact_ip + port.to_bytes(2, "big", signed=False)

lbry/utils.py

@@ -130,16 +130,21 @@ def get_sd_hash(stream_info):
 def json_dumps_pretty(obj, **kwargs):
     return json.dumps(obj, sort_keys=True, indent=2, separators=(',', ': '), **kwargs)
 
-try:
+
-    # the standard contextlib.aclosing() is available in 3.10+
+def cancel_task(task: typing.Optional[asyncio.Task]):
-    from contextlib import aclosing  # pylint: disable=unused-import
+    if task and not task.done():
-except ImportError:
+        task.cancel()
-    @contextlib.asynccontextmanager
+
-    async def aclosing(thing):
+
-        try:
+def cancel_tasks(tasks: typing.List[typing.Optional[asyncio.Task]]):
-            yield thing
+    for task in tasks:
-        finally:
+        cancel_task(task)
-            await thing.aclose()
+
+
+def drain_tasks(tasks: typing.List[typing.Optional[asyncio.Task]]):
+    while tasks:
+        cancel_task(tasks.pop())
+
 
 def async_timed_cache(duration: int):
     def wrapper(func):
@@ -400,7 +405,7 @@ async def fallback_get_external_ip():  # used if spv servers can't be used for i
 
 async def _get_external_ip(default_servers) -> typing.Tuple[typing.Optional[str], typing.Optional[str]]:
     # used if upnp is disabled or non-functioning
-    from lbry.wallet.udp import SPVStatusClientProtocol  # pylint: disable=C0415
+    from lbry.wallet.server.udp import SPVStatusClientProtocol  # pylint: disable=C0415
 
     hostname_to_ip = {}
     ip_to_hostnames = collections.defaultdict(list)
@@ -450,8 +455,8 @@ def is_running_from_bundle():
 
 
 class LockWithMetrics(asyncio.Lock):
-    def __init__(self, acquire_metric, held_time_metric):
+    def __init__(self, acquire_metric, held_time_metric, loop=None):
-        super().__init__()
+        super().__init__(loop=loop)
         self._acquire_metric = acquire_metric
         self._lock_held_time_metric = held_time_metric
         self._lock_acquired_time = None
@@ -469,18 +474,3 @@ class LockWithMetrics(asyncio.Lock):
             return super().release()
         finally:
             self._lock_held_time_metric.observe(time.perf_counter() - self._lock_acquired_time)
-
-
-def get_colliding_prefix_bits(first_value: bytes, second_value: bytes):
-    """
-    Calculates the amount of colliding prefix bits between <first_value> and <second_value>.
-    This is given by the amount of bits that are the same until the first different one (via XOR),
-    starting from the most significant bit to the least significant bit.
-    :param first_value: first value to compare, bigger than size.
-    :param second_value: second value to compare, bigger than size.
-    :return: amount of prefix colliding bits.
-    """
-    assert len(first_value) == len(second_value), "length should be the same"
-    size = len(first_value) * 8
-    first_value, second_value = int.from_bytes(first_value, "big"), int.from_bytes(second_value, "big")
-    return size - (first_value ^ second_value).bit_length()

lbry/wallet/__init__.py

@@ -3,11 +3,11 @@ __lbcctl__ = 'lbcctl'
 __lbcwallet__ = 'lbcwallet'
 __lbcd_url__ = (
     'https://github.com/lbryio/lbcd/releases/download/' +
-    'v0.22.100-rc.0/lbcd_0.22.100-rc.0_TARGET_PLATFORM.tar.gz'
+    'v0.22.200-beta/lbcd_0.22.200-beta_TARGET_PLATFORM.tar.gz'
 )
 __lbcwallet_url__ = (
     'https://github.com/lbryio/lbcwallet/releases/download/' +
-    'v0.13.100-alpha.0/lbcwallet_0.13.100-alpha.0_TARGET_PLATFORM.tar.gz'
+    'v0.13.100-alpha-rc2/lbcwallet_0.13.100-alpha-rc2_TARGET_PLATFORM.tar.gz'
 )
 __spvserver__ = 'lbry.wallet.server.coin.LBCRegTest'
 

lbry/wallet/account.py

@@ -39,14 +39,9 @@ class DeterministicChannelKeyManager:
         self.account = account
         self.last_known = 0
         self.cache = {}
-        self._private_key: Optional[PrivateKey] = None
+        self.private_key: Optional[PrivateKey] = None
-
+        if account.private_key is not None:
-    @property
+            self.private_key = account.private_key.child(KeyPath.CHANNEL)
-    def private_key(self):
-        if self._private_key is None:
-            if self.account.private_key is not None:
-                self._private_key = self.account.private_key.child(KeyPath.CHANNEL)
-        return self._private_key
 
     def maybe_generate_deterministic_key_for_channel(self, txo):
         if self.private_key is None:

lbry/wallet/bip32.py

@@ -215,10 +215,6 @@ class PrivateKey(_KeyBase):
         private_key = cPrivateKey.from_int(key_int)
         return cls(ledger, private_key, bytes((0,)*32), 0, 0)
 
-    @classmethod
-    def from_bytes(cls, ledger, key_bytes) -> 'PrivateKey':
-        return cls(ledger, cPrivateKey(key_bytes), bytes((0,)*32), 0, 0)
-
     @cachedproperty
     def private_key_bytes(self):
         """ Return the serialized private key (no leading zero byte). """

lbry/wallet/checkpoints.py

@@ -1064,182 +1064,4 @@ HASHES = {
     1062000: 'c44d02a890aa66979b10d1cfa597c877f498841b4e12dd9a7bdf8d4a5fccab80',
     1063000: '1c093734f5f241b36c1b9971e2759983f88f4033405a2588b4ebfd6998ac7465',
     1064000: '9e354a83b71bbb9704053bfeea038a9c3d5daad080c6406c698b047c634706a6',
-    1065000: '563188accc4a6e311bd5046516a92a233f11f891b2304d37f151c5a6002b6958',
-    1066000: '333f1b4e996fac87e32dec667533715b31f1736b4342806a81d568b5c5238456',
-    1067000: 'df59a0b7319d5269bdf55043d91ec62bbb30829bb7054da623717a394b6ed678',
-    1068000: '06d8b674a205393edaf20c1d837baadc9caf0b0a675645246263cc163302241d',
-    1069000: 'ac065c48fad1383039d39e23c8367bad7cf9a37e07a5294cd7b04af5827b9961',
-    1070000: '90cd8b50f94208bc459081356474a961f6b764a1217f8fd291f5e4828081b730',
-    1071000: '3c0aa207ba9eea45458ab4fa26d6a027862592adb9bcce30915816e777dc6cfc',
-    1072000: '3d556c08f2300b67b704d3cbf46e22866e3ac164472b5930e2ada23b08475a0f',
-    1073000: 'a39b5c54c24efe3066aa203358b96baea405cd59aac6b0b48930e77799b4dd7d',
-    1074000: 'e8c8273d5a50a60e8744716c9f31496fb29eca87b4d68643f4ecd7ec4e400e23',
-    1075000: 'b8043ae41a1d0d7d4310c85764fcba1424733df347ffc2e8cbda1fe6ccbb5153',
-    1076000: '58468db1f91805e767d334824d6bffe54e0f900d1fb2a89b105086a493053b3d',
-    1077000: '04a78749b58465efa3a56d1735cd082c1f0f796e26486c7136950dbaf6effaa4',
-    1078000: 'e1dd6b58c75b01a67d4a4594dc7b4b2ee9e7d7fa7b25fd6246ce0e86eff33c75',
-    1079000: 'd239af017a6bb664485b14ad15e0eb703775e43018a045a8612b3697794460da',
-    1080000: '29ae5503f8c1249fefeb63fd967a71a70588ee0db1c97497e16366163a684341',
-    1081000: '05103ab27469e0859cbcd3daf42faa2bae798f522534697c7f2b34f7a050ee0f',
-    1082000: '4553d2cb7e90b6db11d242e287fe96822e6cd60e6388b94bf9006411f202ba03',
-    1083000: '97995acd178b2a142d571d5ae1c2a3deaf93a909fd91fb9c541d57f73e32dc99',
-    1084000: '9e3f23376af14d76ab24cd54e321dec019af73ad61067d959ff90043acc5ffcc',
-    1085000: '81c056b14f13cee0d6d6c8079fdd5a1a84c3a5c76cc9448612e8ef6d3531300e',
-    1086000: '8a0004f6809bdd075915a804e43991dfe8f22e05679d2fdaf8e373f101bac5c2',
-    1087000: '27c45a4c9ad24e038f2ebe40835a1c49ac7221d7185082866ee354351ba87c7a',
-    1088000: 'fd27e21747117b00b4ada1cba161ac49edb57cca540f86ac5ba885050f08f824',
-    1089000: 'bff867335767103bc3ed15ede5b9fde88016f8ede15dc5bf3e81ea40dcfc61ae',
-    1090000: '608f75016d1db08888dd59640f63e838c19bdfa833c0cc177ad3d2b818b0db5b',
-    1091000: '90750b452bd4dedaab6b57fecbfe88f71ce3d5437fad7f9ec0fdd270445c7526',
-    1092000: '98287b39f9f1233017dc5d932e5c77f0521ca84587eb3f39f0e7b6c297c749af',
-    1093000: '68a5846ed05c9bb142197849106838765f90f15c10b2cc938eef49b95eaa9d33',
-    1094000: '5660a1aac2fc763a417fc656c8887fc8186bf613ae1ccbb1a664fb43ce1fa1d6',
-    1095000: '62bad3db418b3f4cad3596881b645b72479c71deb0d39c7a4c8bd1577dc225fd',
-    1096000: 'e0e4b2b183591f10dd5614c289412f2fb5e320b7d3278f7c028f42f591872666',
-    1097000: 'a233a233fc2aa5dab9e75106d91388343ef969458ea974f1409a2ab5fc441911',
-    1098000: '16dfa5fa6cbd1188e562697b5f00ac206960d0851ed84adf37ae975fd5ffdd6a',
-    1099000: 'b8a870b7dc6d3263730c00f59d52aa6cce35dc59aa8fba715034cc2d14927260',
-    1100000: 'a3cd7749743da22a3846dcc2edbf1df21b938e829419389e3bc09284797c5b43',
-    1101000: '75b14c2a95e2a095949729b7c0b624bd725a2de98404a8e3247b60c977d0198e',
-    1102000: '4d3af64d37064dd5f57e25d61f248a1e21c1b1cadd7bb1404e35c9fbe06f1fd4',
-    1103000: 'd73c92bfed358dfcd7659228974ab75ea2fc86f2301ee47133adad8075203872',
-    1104000: '30cd82354f37bc0b412123867c7e1835206022a7501853bf8c0d3df02f291645',
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-    1231000: '5c996634b377412ae0a3d8f541f3cc4a354aab72c198aa23a5cfc2678cbabf09',
-    1232000: '86702316a2d1730fbae01a08f36fffe5bf6d3ebb7d76b35a1617713766698b46',
-    1233000: 'fb16b63916c0287cb9b01d0c5aad626ced1b73c49a374c9009703aa90fd27a82',
-    1234000: '7c6f7904602ccd86bfb05cb8d6b5547c989c57cb2e214e93f1220fa4fe29bcb0',
-    1235000: '898b0f20811f52aa5a6bd0c35eff86fca3fbe3b066e423644fa77b2e269d9513',
-    1236000: '39128910ef624b6a8bbd390a311b5587c0991cda834eed996d814fe410cac352',
-    1237000: 'a0709afeedb64af4168ce8cf3dbda667a248df8e91da96acb2333686a2b89325',
-    1238000: 'e00075e7ba8c18cc277bfc5115ae6ff6b9678e6e99efd6e45f549ef8a3981a3d',
-    1239000: '3fba891600738f2d37e279209d52bbe6dc7ce005eeed62048247c96f370e7cd5',
-    1240000: 'def9bf1bec9325db90bb070f532972cfdd74e814c2b5e74a4d5a7c09a963a5f1',
-    1241000: '6a5d187e32bc189ac786959e1fe846031b97ae1ce202c22e1bdb1d2a963005fd',
-    1242000: 'a74d7c0b104eaf76c53a3a31ce51b75bbd8e05b5e84c31f593f505a13d83634c',
 }

lbry/wallet/coinselection.py

@@ -141,7 +141,7 @@ class CoinSelector:
                     _) -> List[OutputEffectiveAmountEstimator]:
         """ Accumulate UTXOs at random until there is enough to cover the target. """
         target = self.target + self.cost_of_change
-        self.random.shuffle(txos, random=self.random.random)  # pylint: disable=deprecated-argument
+        self.random.shuffle(txos, self.random.random)
         selection = []
         amount = 0
         for coin in txos:

lbry/wallet/constants.py

@@ -2,7 +2,6 @@ NULL_HASH32 = b'\x00'*32
 
 CENT = 1000000
 COIN = 100*CENT
-DUST = 1000
 
 TIMEOUT = 30.0
 

lbry/wallet/database.py

@@ -1211,7 +1211,6 @@ class Database(SQLiteMixin):
         return addresses
 
     async def get_address_count(self, cols=None, read_only=False, **constraints):
-        self._clean_txo_constraints_for_aggregation(constraints)
         count = await self.select_addresses('COUNT(*) as total', read_only=read_only, **constraints)
         return count[0]['total'] or 0
 

lbry/wallet/ledger.py

@@ -106,7 +106,7 @@ class Ledger(metaclass=LedgerRegistry):
     target_timespan = 150
 
     default_fee_per_byte = 50
-    default_fee_per_name_char = 0
+    default_fee_per_name_char = 200000
 
     checkpoints = HASHES
 
@@ -329,10 +329,10 @@ class Ledger(metaclass=LedgerRegistry):
     async def start(self):
         if not os.path.exists(self.path):
             os.mkdir(self.path)
-        await asyncio.wait(map(asyncio.create_task, [
+        await asyncio.wait([
             self.db.open(),
             self.headers.open()
-        ]))
+        ])
         fully_synced = self.on_ready.first
         asyncio.create_task(self.network.start())
         await self.network.on_connected.first
@@ -466,9 +466,9 @@ class Ledger(metaclass=LedgerRegistry):
     async def subscribe_accounts(self):
         if self.network.is_connected and self.accounts:
             log.info("Subscribe to %i accounts", len(self.accounts))
-            await asyncio.wait(map(asyncio.create_task, [
+            await asyncio.wait([
                 self.subscribe_account(a) for a in self.accounts
-            ]))
+            ])
 
     async def subscribe_account(self, account: Account):
         for address_manager in account.address_managers.values():
@@ -722,15 +722,6 @@ class Ledger(metaclass=LedgerRegistry):
                 return account.address_managers[details['chain']]
         return None
 
-    async def broadcast_or_release(self, tx, blocking=False):
-        try:
-            await self.broadcast(tx)
-        except:
-            await self.release_tx(tx)
-            raise
-        if blocking:
-            await self.wait(tx, timeout=None)
-
     def broadcast(self, tx):
         # broadcast can't be a retriable call yet
         return self.network.broadcast(hexlify(tx.raw).decode())
@@ -789,9 +780,13 @@ class Ledger(metaclass=LedgerRegistry):
             include_is_my_output=False,
             include_sent_supports=False,
             include_sent_tips=False,
-            include_received_tips=False) -> Tuple[List[Output], dict, int, int]:
+            include_received_tips=False,
+            hub_server=False) -> Tuple[List[Output], dict, int, int]:
         encoded_outputs = await query
-        outputs = Outputs.from_base64(encoded_outputs or '')  # TODO: why is the server returning None?
+        if hub_server:
+            outputs = Outputs.from_grpc(encoded_outputs)
+        else:
+            outputs = Outputs.from_base64(encoded_outputs or b'')  # TODO: why is the server returning None?
         txs: List[Transaction] = []
         if len(outputs.txs) > 0:
             async for tx in self.request_transactions(tuple(outputs.txs), cached=True):
@@ -867,10 +862,13 @@ class Ledger(metaclass=LedgerRegistry):
                         txo.received_tips = tips
         return txos, blocked, outputs.offset, outputs.total
 
-    async def resolve(self, accounts, urls, **kwargs):
+    async def resolve(self, accounts, urls, new_sdk_server=None, **kwargs):
         txos = []
         urls_copy = list(urls)
-        resolve = partial(self.network.retriable_call, self.network.resolve)
+        if new_sdk_server:
+            resolve = partial(self.network.new_resolve, new_sdk_server)
+        else:
+            resolve = partial(self.network.retriable_call, self.network.resolve)
         while urls_copy:
             batch, urls_copy = urls_copy[:100], urls_copy[100:]
             txos.extend(
@@ -895,14 +893,17 @@ class Ledger(metaclass=LedgerRegistry):
         return await self.network.sum_supports(new_sdk_server, **kwargs)
 
     async def claim_search(
-            self, accounts,
+            self, accounts, include_purchase_receipt=False, include_is_my_output=False,
-            include_purchase_receipt=False,
+            new_sdk_server=None, **kwargs) -> Tuple[List[Output], dict, int, int]:
-            include_is_my_output=False,
+        if new_sdk_server:
-            **kwargs) -> Tuple[List[Output], dict, int, int]:
+            claim_search = partial(self.network.new_claim_search, new_sdk_server)
+        else:
+            claim_search = self.network.claim_search
         return await self._inflate_outputs(
-            self.network.claim_search(**kwargs), accounts,
+            claim_search(**kwargs), accounts,
             include_purchase_receipt=include_purchase_receipt,
-            include_is_my_output=include_is_my_output
+            include_is_my_output=include_is_my_output,
+            hub_server=new_sdk_server is not None
         )
 
     # async def get_claim_by_claim_id(self, accounts, claim_id, **kwargs) -> Output:
@@ -938,7 +939,9 @@ class Ledger(metaclass=LedgerRegistry):
                              "%d change addresses (gap: %d), %d channels, %d certificates and %d claims. ",
                              account.id, balance, total_receiving, account.receiving.gap, total_change,
                              account.change.gap, channel_count, len(account.channel_keys), claim_count)
-        except Exception:
+        except Exception as err:
+            if isinstance(err, asyncio.CancelledError):  # TODO: remove when updated to 3.8
+                raise
             log.exception(
                 'Failed to display wallet state, please file issue '
                 'for this bug along with the traceback you see below:')
@@ -961,7 +964,9 @@ class Ledger(metaclass=LedgerRegistry):
             claim_ids = [p.purchased_claim_id for p in purchases]
             try:
                 resolved, _, _, _ = await self.claim_search([], claim_ids=claim_ids)
-            except Exception:
+            except Exception as err:
+                if isinstance(err, asyncio.CancelledError):  # TODO: remove when updated to 3.8
+                    raise
                 log.exception("Resolve failed while looking up purchased claim ids:")
                 resolved = []
             lookup = {claim.claim_id: claim for claim in resolved}
@@ -1041,7 +1046,9 @@ class Ledger(metaclass=LedgerRegistry):
         claim_ids = collection.claim.collection.claims.ids[offset:page_size + offset]
         try:
             resolve_results, _, _, _ = await self.claim_search([], claim_ids=claim_ids)
-        except Exception:
+        except Exception as err:
+            if isinstance(err, asyncio.CancelledError):  # TODO: remove when updated to 3.8
+                raise
             log.exception("Resolve failed while looking up collection claim ids:")
             return []
         claims = []

lbry/wallet/manager.py

@@ -3,6 +3,7 @@ import json
 import typing
 import logging
 import asyncio
+from distutils.util import strtobool
 
 from binascii import unhexlify
 from decimal import Decimal
@@ -182,6 +183,7 @@ class WalletManager:
         }[config.blockchain_name]
 
         ledger_config = {
+            'use_go_hub': not strtobool(os.environ.get('ENABLE_LEGACY_SEARCH') or 'yes'),
             'auto_connect': True,
             'explicit_servers': [],
             'hub_timeout': config.hub_timeout,
@@ -236,6 +238,7 @@ class WalletManager:
 
     async def reset(self):
         self.ledger.config = {
+            'use_go_hub': not strtobool(os.environ.get('ENABLE_LEGACY_SEARCH') or 'yes'),
             'auto_connect': True,
             'explicit_servers': [],
             'default_servers': Config.lbryum_servers.default,
@@ -317,4 +320,10 @@ class WalletManager:
         )
 
     async def broadcast_or_release(self, tx, blocking=False):
-        await self.ledger.broadcast_or_release(tx, blocking=blocking)
+        try:
+            await self.ledger.broadcast(tx)
+        except:
+            await self.ledger.release_tx(tx)
+            raise
+        if blocking:
+            await self.ledger.wait(tx, timeout=None)

lbry/wallet/network.py

@@ -7,13 +7,16 @@ from time import perf_counter
 from collections import defaultdict
 from typing import Dict, Optional, Tuple
 import aiohttp
+import grpc
+from lbry.schema.types.v2 import hub_pb2_grpc
+from lbry.schema.types.v2.hub_pb2 import SearchRequest
 
 from lbry import __version__
 from lbry.utils import resolve_host
 from lbry.error import IncompatibleWalletServerError
 from lbry.wallet.rpc import RPCSession as BaseClientSession, Connector, RPCError, ProtocolError
 from lbry.wallet.stream import StreamController
-from lbry.wallet.udp import SPVStatusClientProtocol, SPVPong
+from lbry.wallet.server.udp import SPVStatusClientProtocol, SPVPong
 from lbry.conf import KnownHubsList
 
 log = logging.getLogger(__name__)
@@ -117,9 +120,9 @@ class ClientSession(BaseClientSession):
                     )
                 else:
                     await asyncio.sleep(max(0, max_idle - (now - self.last_send)))
-        except (Exception, asyncio.CancelledError) as err:
+        except Exception as err:
             if isinstance(err, asyncio.CancelledError):
-                log.info("closing connection to %s:%i", *self.server)
+                log.warning("closing connection to %s:%i", *self.server)
             else:
                 log.exception("lost connection to spv")
         finally:
@@ -137,7 +140,7 @@ class ClientSession(BaseClientSession):
         controller.add(request.args)
 
     def connection_lost(self, exc):
-        log.debug("Connection lost: %s:%d", *self.server)
+        log.warning("Connection lost: %s:%d", *self.server)
         super().connection_lost(exc)
         self.response_time = None
         self.connection_latency = None
@@ -214,7 +217,7 @@ class Network:
         def loop_task_done_callback(f):
             try:
                 f.result()
-            except (Exception, asyncio.CancelledError):
+            except Exception:
                 if self.running:
                     log.exception("wallet server connection loop crashed")
 
@@ -300,7 +303,7 @@ class Network:
                                    concurrency=self.config.get('concurrent_hub_requests', 30))
             try:
                 await client.create_connection()
-                log.info("Connected to spv server %s:%i", host, port)
+                log.warning("Connected to spv server %s:%i", host, port)
                 await client.ensure_server_version()
                 return client
             except (asyncio.TimeoutError, ConnectionError, OSError, IncompatibleWalletServerError, RPCError):
@@ -312,8 +315,7 @@ class Network:
         sleep_delay = 30
         while self.running:
             await asyncio.wait(
-                map(asyncio.create_task, [asyncio.sleep(30), self._urgent_need_reconnect.wait()]),
+                [asyncio.sleep(30), self._urgent_need_reconnect.wait()], return_when=asyncio.FIRST_COMPLETED
-                return_when=asyncio.FIRST_COMPLETED
             )
             if self._urgent_need_reconnect.is_set():
                 sleep_delay = 30
@@ -339,13 +341,14 @@ class Network:
                 try:
                     if not self._urgent_need_reconnect.is_set():
                         await asyncio.wait(
-                            [self._keepalive_task, asyncio.create_task(self._urgent_need_reconnect.wait())],
+                            [self._keepalive_task, self._urgent_need_reconnect.wait()],
                             return_when=asyncio.FIRST_COMPLETED
                         )
                     else:
                         await self._keepalive_task
                     if self._urgent_need_reconnect.is_set():
                         log.warning("urgent reconnect needed")
+                        self._urgent_need_reconnect.clear()
                     if self._keepalive_task and not self._keepalive_task.done():
                         self._keepalive_task.cancel()
                 except asyncio.CancelledError:
@@ -354,7 +357,7 @@ class Network:
                     self._keepalive_task = None
                     self.client = None
                     self.server_features = None
-                    log.info("connection lost to %s", server_str)
+                    log.warning("connection lost to %s", server_str)
         log.info("network loop finished")
 
     async def stop(self):
@@ -391,6 +394,7 @@ class Network:
                 log.warning("Wallet server call timed out, retrying.")
             except ConnectionError:
                 log.warning("connection error")
+
         raise asyncio.CancelledError()  # if we got here, we are shutting down
 
     def _update_remote_height(self, header_args):
@@ -473,6 +477,21 @@ class Network:
     def claim_search(self, session_override=None, **kwargs):
         return self.rpc('blockchain.claimtrie.search', kwargs, False, session_override)
 
+    async def new_resolve(self, server, urls):
+        message = {"method": "resolve", "params": {"urls": urls, "protobuf": True}}
+        async with self.aiohttp_session.post(server, json=message) as r:
+            result = await r.json()
+            return result['result']
+
+    async def new_claim_search(self, server, **kwargs):
+        async with grpc.aio.insecure_channel(server) as channel:
+            stub = hub_pb2_grpc.HubStub(channel)
+            try:
+                response = await stub.Search(SearchRequest(**kwargs))
+            except grpc.aio.AioRpcError as error:
+                raise RPCError(error.code(), error.details())
+            return response
+
     async def sum_supports(self, server, **kwargs):
         message = {"method": "support_sum", "params": kwargs}
         async with self.aiohttp_session.post(server, json=message) as r:

lbry/wallet/orchstr8/__init__.py

@@ -1,2 +1,5 @@
+__hub_url__ = (
+    "https://github.com/lbryio/hub/releases/download/v0.2022.01.21.1/hub"
+)
 from lbry.wallet.orchstr8.node import Conductor
 from lbry.wallet.orchstr8.service import ConductorService

lbry/wallet/orchstr8/node.py

@@ -1,4 +1,3 @@
-# pylint: disable=import-error
 import os
 import json
 import shutil
@@ -8,29 +7,31 @@ import tarfile
 import logging
 import tempfile
 import subprocess
+import importlib
 import platform
+from distutils.util import strtobool
 
 from binascii import hexlify
 from typing import Type, Optional
 import urllib.request
 from uuid import uuid4
 
-
 import lbry
+from lbry.wallet.server.env import Env
 from lbry.wallet import Wallet, Ledger, RegTestLedger, WalletManager, Account, BlockHeightEvent
 from lbry.conf import KnownHubsList, Config
+from lbry.wallet.orchstr8 import __hub_url__
+from lbry.wallet.server.block_processor import BlockProcessor
+from lbry.wallet.server.chain_reader import BlockchainReaderServer
+from lbry.wallet.server.db.elasticsearch.sync import ElasticWriter
 
 log = logging.getLogger(__name__)
 
-try:
+
-    from hub.herald.env import ServerEnv
+def get_spvserver_from_ledger(ledger_module):
-    from hub.scribe.env import BlockchainEnv
+    spvserver_path, regtest_class_name = ledger_module.__spvserver__.rsplit('.', 1)
-    from hub.elastic_sync.env import ElasticEnv
+    spvserver_module = importlib.import_module(spvserver_path)
-    from hub.herald.service import HubServerService
+    return getattr(spvserver_module, regtest_class_name)
-    from hub.elastic_sync.service import ElasticSyncService
-    from hub.scribe.service import BlockchainProcessorService
-except ImportError:
-    pass
 
 
 def get_lbcd_node_from_ledger(ledger_module):
@@ -40,7 +41,6 @@ def get_lbcd_node_from_ledger(ledger_module):
         ledger_module.__lbcctl__
     )
 
-
 def get_lbcwallet_node_from_ledger(ledger_module):
     return LBCWalletNode(
         ledger_module.__lbcwallet_url__,
@@ -53,22 +53,28 @@ class Conductor:
 
     def __init__(self, seed=None):
         self.manager_module = WalletManager
+        self.spv_module = get_spvserver_from_ledger(lbry.wallet)
+
         self.lbcd_node = get_lbcd_node_from_ledger(lbry.wallet)
         self.lbcwallet_node = get_lbcwallet_node_from_ledger(lbry.wallet)
-        self.spv_node = SPVNode()
+        self.spv_node = SPVNode(self.spv_module)
         self.wallet_node = WalletNode(
             self.manager_module, RegTestLedger, default_seed=seed
         )
+        self.hub_node = HubNode(__hub_url__, "hub", self.spv_node)
+
         self.lbcd_started = False
         self.lbcwallet_started = False
         self.spv_started = False
         self.wallet_started = False
+        self.hub_started = False
 
         self.log = log.getChild('conductor')
 
     async def start_lbcd(self):
         if not self.lbcd_started:
-            await self.lbcd_node.start()
+            asyncio.create_task(self.lbcd_node.start())
+            await self.lbcd_node.running.wait()
             self.lbcd_started = True
 
     async def stop_lbcd(self, cleanup=True):
@@ -76,6 +82,17 @@ class Conductor:
             await self.lbcd_node.stop(cleanup)
             self.lbcd_started = False
 
+    async def start_hub(self):
+        if not self.hub_started:
+            asyncio.create_task(self.hub_node.start())
+            await self.lbcwallet_node.running.wait()
+            self.hub_started = True
+
+    async def stop_hub(self, cleanup=True):
+        if self.hub_started:
+            await self.hub_node.stop(cleanup)
+            self.hub_started = False
+
     async def start_spv(self):
         if not self.spv_started:
             await self.spv_node.start(self.lbcwallet_node)
@@ -98,7 +115,8 @@ class Conductor:
 
     async def start_lbcwallet(self, clean=True):
         if not self.lbcwallet_started:
-            await self.lbcwallet_node.start()
+            asyncio.create_task(self.lbcwallet_node.start())
+            await self.lbcwallet_node.running.wait()
             if clean:
                 mining_addr = await self.lbcwallet_node.get_new_address()
                 self.lbcwallet_node.mining_addr = mining_addr
@@ -137,7 +155,6 @@ class Conductor:
         await self.start_lbcd()
         await self.start_lbcwallet(clean=False)
 
-
 class WalletNode:
 
     def __init__(self, manager_class: Type[WalletManager], ledger_class: Type[Ledger],
@@ -165,6 +182,7 @@ class WalletNode:
         self.manager = self.manager_class.from_config({
             'ledgers': {
                 self.ledger_class.get_id(): {
+                    'use_go_hub': not strtobool(os.environ.get('ENABLE_LEGACY_SEARCH') or 'yes'),
                     'api_port': self.port,
                     'explicit_servers': [(spv_node.hostname, spv_node.port)],
                     'default_servers': Config.lbryum_servers.default,
@@ -172,7 +190,6 @@ class WalletNode:
                     'known_hubs': config.known_hubs if config else KnownHubsList(),
                     'hub_timeout': 30,
                     'concurrent_hub_requests': 32,
-                    'fee_per_name_char': 200000
                 }
             },
             'wallets': [wallet_file_name]
@@ -203,83 +220,59 @@ class WalletNode:
 
 
 class SPVNode:
-    def __init__(self, node_number=1):
+
-        self.node_number = node_number
+    def __init__(self, coin_class, node_number=1):
+        self.coin_class = coin_class
         self.controller = None
         self.data_path = None
-        self.server: Optional[HubServerService] = None
+        self.server: Optional[BlockchainReaderServer] = None
-        self.writer: Optional[BlockchainProcessorService] = None
+        self.writer: Optional[BlockProcessor] = None
-        self.es_writer: Optional[ElasticSyncService] = None
+        self.es_writer: Optional[ElasticWriter] = None
         self.hostname = 'localhost'
         self.port = 50001 + node_number  # avoid conflict with default daemon
         self.udp_port = self.port
         self.elastic_notifier_port = 19080 + node_number
-        self.elastic_services = f'localhost:9200/localhost:{self.elastic_notifier_port}'
+        self.rpc_port = 8000 + node_number
         self.session_timeout = 600
-        self.stopped = True
+        self.stopped = False
         self.index_name = uuid4().hex
 
     async def start(self, lbcwallet_node: 'LBCWalletNode', extraconf=None):
-        if not self.stopped:
+        self.data_path = tempfile.mkdtemp()
-            log.warning("spv node is already running")
+        conf = {
-            return
+            'description': '',
-        self.stopped = False
+            'payment_address': '',
-        try:
+            'daily_fee': '0',
-            self.data_path = tempfile.mkdtemp()
+            'db_dir': self.data_path,
-            conf = {
+            'daemon_url': lbcwallet_node.rpc_url,
-                'description': '',
+            'reorg_limit': 100,
-                'payment_address': '',
+            'host': self.hostname,
-                'daily_fee': '0',
+            'tcp_port': self.port,
-                'db_dir': self.data_path,
+            'udp_port': self.udp_port,
-                'daemon_url': lbcwallet_node.rpc_url,
+            'rpc_port': self.rpc_port,
-                'reorg_limit': 100,
+            'elastic_notifier_port': self.elastic_notifier_port,
-                'host': self.hostname,
+            'session_timeout': self.session_timeout,
-                'tcp_port': self.port,
+            'max_query_workers': 0,
-                'udp_port': self.udp_port,
+            'es_index_prefix': self.index_name,
-                'elastic_services': self.elastic_services,
+        }
-                'session_timeout': self.session_timeout,
+        if extraconf:
-                'max_query_workers': 0,
+            conf.update(extraconf)
-                'es_index_prefix': self.index_name,
+        env = Env(self.coin_class, **conf)
-                'chain': 'regtest',
+        self.writer = BlockProcessor(env)
-                'index_address_status': False
+        self.server = BlockchainReaderServer(env)
-            }
+        self.es_writer = ElasticWriter(env)
-            if extraconf:
+        await self.writer.open()
-                conf.update(extraconf)
+        await self.writer.start()
-            self.writer = BlockchainProcessorService(
+        await asyncio.wait([self.server.start(), self.es_writer.start()])
-                BlockchainEnv(db_dir=self.data_path, daemon_url=lbcwallet_node.rpc_url,
-                              reorg_limit=100, max_query_workers=0, chain='regtest', index_address_status=False)
-            )
-            self.server = HubServerService(ServerEnv(**conf))
-            self.es_writer = ElasticSyncService(
-                ElasticEnv(
-                    db_dir=self.data_path, reorg_limit=100, max_query_workers=0, chain='regtest',
-                    elastic_notifier_port=self.elastic_notifier_port,
-                    es_index_prefix=self.index_name,
-                    filtering_channel_ids=(extraconf or {}).get('filtering_channel_ids'),
-                    blocking_channel_ids=(extraconf or {}).get('blocking_channel_ids')
-                )
-            )
-            await self.writer.start()
-            await self.es_writer.start()
-            await self.server.start()
-        except Exception as e:
-            self.stopped = True
-            log.exception("failed to start spv node")
-            raise e
 
     async def stop(self, cleanup=True):
         if self.stopped:
-            log.warning("spv node is already stopped")
             return
         try:
+            await self.es_writer.stop(delete_index=True)
             await self.server.stop()
-            await self.es_writer.delete_index()
-            await self.es_writer.stop()
             await self.writer.stop()
             self.stopped = True
-        except Exception as e:
-            log.exception("failed to stop spv node")
-            raise e
         finally:
             cleanup and self.cleanup()
 
@@ -345,8 +338,8 @@ class WalletProcess(asyncio.SubprocessProtocol):
         self.stopped.set()
         self.ready.set()
 
-
 class LBCDNode:
+
     def __init__(self, url, daemon, cli):
         self.latest_release_url = url
         self.project_dir = os.path.dirname(os.path.dirname(__file__))
@@ -416,51 +409,44 @@ class LBCDNode:
         return self.exists or self.download()
 
     async def start(self):
-        if not self.stopped:
+        assert self.ensure()
-            return
+        loop = asyncio.get_event_loop()
-        self.stopped = False
+        asyncio.get_child_watcher().attach_loop(loop)
-        try:
+        command = [
-            assert self.ensure()
+            self.daemon_bin,
-            loop = asyncio.get_event_loop()
+            '--notls',
-            asyncio.get_child_watcher().attach_loop(loop)
+            f'--datadir={self.data_path}',
-            command = [
+            '--regtest', f'--listen=127.0.0.1:{self.peerport}', f'--rpclisten=127.0.0.1:{self.rpcport}',
-                self.daemon_bin,
+            '--txindex', f'--rpcuser={self.rpcuser}', f'--rpcpass={self.rpcpassword}'
-                '--notls',
+        ]
-                f'--datadir={self.data_path}',
+        self.log.info(' '.join(command))
-                '--regtest', f'--listen=127.0.0.1:{self.peerport}', f'--rpclisten=127.0.0.1:{self.rpcport}',
+        while self.stopped:
-                '--txindex', f'--rpcuser={self.rpcuser}', f'--rpcpass={self.rpcpassword}'
+            if self.running.is_set():
-            ]
+                await asyncio.sleep(1)
-            self.log.info(' '.join(command))
+                continue
-            self.transport, self.protocol = await loop.subprocess_exec(
+            try:
-                LBCDProcess, *command
+                self.transport, self.protocol = await loop.subprocess_exec(
-            )
+                    LBCDProcess, *command
-            await self.protocol.ready.wait()
+                )
-            assert not self.protocol.stopped.is_set()
+                await self.protocol.ready.wait()
-            self.running.set()
+                assert not self.protocol.stopped.is_set()
-        except asyncio.CancelledError:
+                self.running.set()
-            self.running.clear()
+                self.stopped = False
-            self.stopped = True
+            except asyncio.CancelledError:
-            raise
+                self.running.clear()
-        except Exception as e:
+                raise
-            self.running.clear()
+            except Exception as e:
-            self.stopped = True
+                self.running.clear()
-            log.exception('failed to start lbcd', exc_info=e)
+                log.exception('failed to start lbcd', exc_info=e)
-            raise
 
     async def stop(self, cleanup=True):
-        if self.stopped:
+        self.stopped = True
-            return
         try:
-            if self.transport:
+            self.transport.terminate()
-                self.transport.terminate()
+            await self.protocol.stopped.wait()
-                await self.protocol.stopped.wait()
+            self.transport.close()
-                self.transport.close()
-        except Exception as e:
-            log.exception('failed to stop lbcd', exc_info=e)
-            raise
         finally:
             self.log.info("Done shutting down " + self.daemon_bin)
-            self.stopped = True
             if cleanup:
                 self.cleanup()
             self.running.clear()
@@ -561,39 +547,38 @@ class LBCWalletNode:
             f'--username={self.rpcuser}', f'--password={self.rpcpassword}'
         ]
         self.log.info(' '.join(command))
-        try:
+        while self.stopped:
-            self.transport, self.protocol = await loop.subprocess_exec(
+            if self.running.is_set():
-                WalletProcess, *command
+                await asyncio.sleep(1)
-            )
+                continue
-            self.protocol.transport = self.transport
+            try:
-            await self.protocol.ready.wait()
+                self.transport, self.protocol = await loop.subprocess_exec(
-            assert not self.protocol.stopped.is_set()
+                    WalletProcess, *command
-            self.running.set()
+                )
-            self.stopped = False
+                self.protocol.transport = self.transport
-        except asyncio.CancelledError:
+                await self.protocol.ready.wait()
-            self.running.clear()
+                assert not self.protocol.stopped.is_set()
-            raise
+                self.running.set()
-        except Exception as e:
+                self.stopped = False
-            self.running.clear()
+            except asyncio.CancelledError:
-            log.exception('failed to start lbcwallet', exc_info=e)
+                self.running.clear()
+                raise
+            except Exception as e:
+                self.running.clear()
+                log.exception('failed to start lbcwallet', exc_info=e)
 
     def cleanup(self):
         assert self.stopped
         shutil.rmtree(self.data_path, ignore_errors=True)
 
     async def stop(self, cleanup=True):
-        if self.stopped:
+        self.stopped = True
-            return
         try:
             self.transport.terminate()
             await self.protocol.stopped.wait()
             self.transport.close()
-        except Exception as e:
-            log.exception('failed to stop lbcwallet', exc_info=e)
-            raise
         finally:
             self.log.info("Done shutting down " + self.lbcwallet_bin)
-            self.stopped = True
             if cleanup:
                 self.cleanup()
             self.running.clear()
@@ -673,3 +658,130 @@ class LBCWalletNode:
 
     def get_raw_transaction(self, txid):
         return self._cli_cmnd('getrawtransaction', txid, '1')
+
+
+class HubProcess(asyncio.SubprocessProtocol):
+    def __init__(self):
+        self.ready = asyncio.Event()
+        self.stopped = asyncio.Event()
+        self.log = log.getChild('hub')
+
+    def pipe_data_received(self, fd, data):
+        if self.log:
+            self.log.info(data.decode())
+        if b'error' in data.lower():
+            self.ready.set()
+            raise SystemError(data.decode())
+        if b'listening on' in data:
+            self.ready.set()
+        str_lines = str(data.decode()).split("\n")
+        for line in str_lines:
+            if 'releaseTime' in line:
+                print(line)
+
+    def process_exited(self):
+        self.stopped.set()
+        self.ready.set()
+
+
+class HubNode:
+
+    def __init__(self, url, daemon, spv_node):
+        self.spv_node = spv_node
+        self.debug = False
+
+        self.latest_release_url = url
+        self.project_dir = os.path.dirname(os.path.dirname(__file__))
+        self.bin_dir = os.path.join(self.project_dir, 'bin')
+        self.daemon_bin = os.path.join(self.bin_dir, daemon)
+        self.cli_bin = os.path.join(self.bin_dir, daemon)
+        self.log = log.getChild('hub')
+        self.transport = None
+        self.protocol = None
+        self.hostname = 'localhost'
+        self.rpcport = 50051  # avoid conflict with default rpc port
+        self.stopped = False
+        self.running = asyncio.Event()
+
+    @property
+    def exists(self):
+        return (
+            os.path.exists(self.cli_bin) and
+            os.path.exists(self.daemon_bin)
+        )
+
+    def download(self):
+        downloaded_file = os.path.join(
+            self.bin_dir,
+            self.latest_release_url[self.latest_release_url.rfind('/')+1:]
+        )
+
+        if not os.path.exists(self.bin_dir):
+            os.mkdir(self.bin_dir)
+
+        if not os.path.exists(downloaded_file):
+            self.log.info('Downloading: %s', self.latest_release_url)
+            with urllib.request.urlopen(self.latest_release_url) as response:
+                with open(downloaded_file, 'wb') as out_file:
+                    shutil.copyfileobj(response, out_file)
+
+        self.log.info('Extracting: %s', downloaded_file)
+
+        if downloaded_file.endswith('.zip'):
+            with zipfile.ZipFile(downloaded_file) as dotzip:
+                dotzip.extractall(self.bin_dir)
+                # zipfile bug https://bugs.python.org/issue15795
+                os.chmod(self.cli_bin, 0o755)
+                os.chmod(self.daemon_bin, 0o755)
+
+        elif downloaded_file.endswith('.tar.gz'):
+            with tarfile.open(downloaded_file) as tar:
+                tar.extractall(self.bin_dir)
+
+        os.chmod(self.daemon_bin, 0o755)
+
+        return self.exists
+
+    def ensure(self):
+        return self.exists or self.download()
+
+    async def start(self):
+        assert self.ensure()
+        loop = asyncio.get_event_loop()
+        asyncio.get_child_watcher().attach_loop(loop)
+        command = [
+            self.daemon_bin, 'serve', '--esindex', self.spv_node.index_name + 'claims', '--debug'
+        ]
+        self.log.info(' '.join(command))
+        while not self.stopped:
+            if self.running.is_set():
+                await asyncio.sleep(1)
+                continue
+            try:
+                if not self.debug:
+                    self.transport, self.protocol = await loop.subprocess_exec(
+                        HubProcess, *command
+                    )
+                    await self.protocol.ready.wait()
+                    assert not self.protocol.stopped.is_set()
+                self.running.set()
+            except asyncio.CancelledError:
+                self.running.clear()
+                raise
+            except Exception as e:
+                self.running.clear()
+                log.exception('failed to start hub', exc_info=e)
+
+    async def stop(self, cleanup=True):
+        self.stopped = True
+        try:
+            if not self.debug:
+                self.transport.terminate()
+                await self.protocol.stopped.wait()
+                self.transport.close()
+        finally:
+            if cleanup:
+                self.cleanup()
+
+    def cleanup(self):
+        pass

lbry/wallet/rpc/session.py

@@ -395,8 +395,8 @@ class RPCSession(SessionBase):
         namespace=NAMESPACE, labelnames=("version",)
     )
 
-    def __init__(self, *, framer=None, connection=None):
+    def __init__(self, *, framer=None, loop=None, connection=None):
-        super().__init__(framer=framer)
+        super().__init__(framer=framer, loop=loop)
         self.connection = connection or self.default_connection()
         self.client_version = 'unknown'
 

lbry/wallet/script.py

@@ -17,7 +17,6 @@ OP_HASH160 = 0xa9
 OP_EQUALVERIFY = 0x88
 OP_CHECKSIG = 0xac
 OP_CHECKMULTISIG = 0xae
-OP_CHECKLOCKTIMEVERIFY = 0xb1
 OP_EQUAL = 0x87
 OP_PUSHDATA1 = 0x4c
 OP_PUSHDATA2 = 0x4d
@@ -277,7 +276,7 @@ class Template:
             elif isinstance(opcode, PUSH_INTEGER):
                 data = values[opcode.name]
                 source.write_many(push_data(
-                    data.to_bytes((data.bit_length() + 8) // 8, byteorder='little', signed=True)
+                    data.to_bytes((data.bit_length() + 7) // 8, byteorder='little')
                 ))
             elif isinstance(opcode, PUSH_SUBSCRIPT):
                 data = values[opcode.name]
@@ -358,27 +357,19 @@ class InputScript(Script):
     REDEEM_PUBKEY_HASH = Template('pubkey_hash', (
         PUSH_SINGLE('signature'), PUSH_SINGLE('pubkey')
     ))
-    MULTI_SIG_SCRIPT = Template('multi_sig', (
+    REDEEM_SCRIPT = Template('script', (
         SMALL_INTEGER('signatures_count'), PUSH_MANY('pubkeys'), SMALL_INTEGER('pubkeys_count'),
         OP_CHECKMULTISIG
     ))
-    REDEEM_SCRIPT_HASH_MULTI_SIG = Template('script_hash+multi_sig', (
+    REDEEM_SCRIPT_HASH = Template('script_hash', (
-        OP_0, PUSH_MANY('signatures'), PUSH_SUBSCRIPT('script', MULTI_SIG_SCRIPT)
+        OP_0, PUSH_MANY('signatures'), PUSH_SUBSCRIPT('script', REDEEM_SCRIPT)
-    ))
-    TIME_LOCK_SCRIPT = Template('timelock', (
-        PUSH_INTEGER('height'), OP_CHECKLOCKTIMEVERIFY, OP_DROP,
-        # rest is identical to OutputScript.PAY_PUBKEY_HASH:
-        OP_DUP, OP_HASH160, PUSH_SINGLE('pubkey_hash'), OP_EQUALVERIFY, OP_CHECKSIG
-    ))
-    REDEEM_SCRIPT_HASH_TIME_LOCK = Template('script_hash+timelock', (
-        PUSH_SINGLE('signature'), PUSH_SINGLE('pubkey'), PUSH_SUBSCRIPT('script', TIME_LOCK_SCRIPT)
     ))
 
     templates = [
         REDEEM_PUBKEY,
         REDEEM_PUBKEY_HASH,
-        REDEEM_SCRIPT_HASH_TIME_LOCK,
+        REDEEM_SCRIPT_HASH,
-        REDEEM_SCRIPT_HASH_MULTI_SIG,
+        REDEEM_SCRIPT
     ]
 
     @classmethod
@@ -389,38 +380,20 @@ class InputScript(Script):
         })
 
     @classmethod
-    def redeem_multi_sig_script_hash(cls, signatures, pubkeys):
+    def redeem_script_hash(cls, signatures, pubkeys):
-        return cls(template=cls.REDEEM_SCRIPT_HASH_MULTI_SIG, values={
+        return cls(template=cls.REDEEM_SCRIPT_HASH, values={
             'signatures': signatures,
-            'script': cls(template=cls.MULTI_SIG_SCRIPT, values={
+            'script': cls.redeem_script(signatures, pubkeys)
-                'signatures_count': len(signatures),
-                'pubkeys': pubkeys,
-                'pubkeys_count': len(pubkeys)
-            })
         })
 
     @classmethod
-    def redeem_time_lock_script_hash(cls, signature, pubkey, height=None, pubkey_hash=None, script_source=None):
+    def redeem_script(cls, signatures, pubkeys):
-        if height and pubkey_hash:
+        return cls(template=cls.REDEEM_SCRIPT, values={
-            script = cls(template=cls.TIME_LOCK_SCRIPT, values={
+            'signatures_count': len(signatures),
-                'height': height,
+            'pubkeys': pubkeys,
-                'pubkey_hash': pubkey_hash
+            'pubkeys_count': len(pubkeys)
-            })
-        elif script_source:
-            script = cls(source=script_source, template=cls.TIME_LOCK_SCRIPT)
-            script.parse(script.template)
-        else:
-            raise ValueError("script_source or both height and pubkey_hash are required.")
-        return cls(template=cls.REDEEM_SCRIPT_HASH_TIME_LOCK, values={
-            'signature': signature,
-            'pubkey': pubkey,
-            'script': script
         })
 
-    @property
-    def is_script_hash(self):
-        return self.template.name.startswith('script_hash+')
-
 
 class OutputScript(Script):
 
@@ -487,6 +460,21 @@ class OutputScript(Script):
         UPDATE_CLAIM_OPCODES + PAY_SCRIPT_HASH.opcodes
     ))
 
+    SELL_SCRIPT = Template('sell_script', (
+        OP_VERIFY, OP_DROP, OP_DROP, OP_DROP, PUSH_INTEGER('price'), OP_PRICECHECK
+    ))
+    SELL_CLAIM = Template('sell_claim+pay_script_hash', (
+        OP_SELL_CLAIM, PUSH_SINGLE('claim_id'), PUSH_SUBSCRIPT('sell_script', SELL_SCRIPT),
+        PUSH_SUBSCRIPT('receive_script', InputScript.REDEEM_SCRIPT), OP_2DROP, OP_2DROP
+    ) + PAY_SCRIPT_HASH.opcodes)
+
+    BUY_CLAIM = Template('buy_claim+pay_script_hash', (
+        OP_BUY_CLAIM, PUSH_SINGLE('sell_id'),
+        PUSH_SINGLE('claim_id'), PUSH_SINGLE('claim_version'),
+        PUSH_SINGLE('owner_pubkey_hash'), PUSH_SINGLE('negotiation_signature'),
+        OP_2DROP, OP_2DROP, OP_2DROP,
+    ) + PAY_SCRIPT_HASH.opcodes)
+
     templates = [
         PAY_PUBKEY_FULL,
         PAY_PUBKEY_HASH,
@@ -501,6 +489,8 @@ class OutputScript(Script):
         SUPPORT_CLAIM_DATA_SCRIPT,
         UPDATE_CLAIM_PUBKEY,
         UPDATE_CLAIM_SCRIPT,
+        SELL_CLAIM, SELL_SCRIPT,
+        BUY_CLAIM,
     ]
 
     @classmethod
@@ -560,6 +550,30 @@ class OutputScript(Script):
             'pubkey_hash': pubkey_hash
         })
 
+    @classmethod
+    def sell_script(cls, price):
+        return cls(template=cls.SELL_SCRIPT, values={
+            'price': price,
+        })
+
+    @classmethod
+    def sell_claim(cls, claim_id, price, signatures, pubkeys):
+        return cls(template=cls.SELL_CLAIM, values={
+            'claim_id': claim_id,
+            'sell_script': OutputScript.sell_script(price),
+            'receive_script': InputScript.redeem_script(signatures, pubkeys)
+        })
+
+    @classmethod
+    def buy_claim(cls, sell_id, claim_id, claim_version, owner_pubkey_hash, negotiation_signature):
+        return cls(template=cls.BUY_CLAIM, values={
+            'sell_id': sell_id,
+            'claim_id': claim_id,
+            'claim_version': claim_version,
+            'owner_pubkey_hash': owner_pubkey_hash,
+            'negotiation_signature': negotiation_signature,
+        })
+
     @property
     def is_pay_pubkey_hash(self):
         return self.template.name.endswith('pay_pubkey_hash')
@@ -588,6 +602,17 @@ class OutputScript(Script):
     def is_support_claim_data(self):
         return self.template.name.startswith('support_claim+data+')
 
+    @property
+    def is_sell_claim(self):
+        return self.template.name.startswith('sell_claim+')
+
+    @property
+    def is_buy_claim(self):
+        return self.template.name.startswith('buy_claim+')
+
     @property
     def is_claim_involved(self):
-        return any((self.is_claim_name, self.is_support_claim, self.is_update_claim))
+        return any((
+            self.is_claim_name, self.is_support_claim, self.is_update_claim,
+            self.is_sell_claim, self.is_buy_claim
+        ))

lbry/wallet/server/chain_reader.py

@@ -0,0 +1,246 @@
+import signal
+import logging
+import asyncio
+from concurrent.futures.thread import ThreadPoolExecutor
+import typing
+
+import lbry
+from lbry.wallet.server.mempool import MemPool
+from lbry.wallet.server.db.prefixes import DBState
+from lbry.wallet.server.udp import StatusServer
+from lbry.wallet.server.db.db import HubDB
+from lbry.wallet.server.db.elasticsearch.notifier import ElasticNotifierClientProtocol
+from lbry.wallet.server.session import LBRYSessionManager
+from lbry.prometheus import PrometheusServer
+
+
+class BlockchainReader:
+    def __init__(self, env, secondary_name: str, thread_workers: int = 1, thread_prefix: str = 'blockchain-reader'):
+        self.env = env
+        self.log = logging.getLogger(__name__).getChild(self.__class__.__name__)
+        self.shutdown_event = asyncio.Event()
+        self.cancellable_tasks = []
+        self._thread_workers = thread_workers
+        self._thread_prefix = thread_prefix
+        self._executor = ThreadPoolExecutor(thread_workers, thread_name_prefix=thread_prefix)
+        self.db = HubDB(
+            env.coin, env.db_dir, env.cache_MB, env.reorg_limit, env.cache_all_claim_txos, env.cache_all_tx_hashes,
+            secondary_name=secondary_name, max_open_files=-1, blocking_channel_ids=env.blocking_channel_ids,
+            filtering_channel_ids=env.filtering_channel_ids, executor=self._executor
+        )
+        self.last_state: typing.Optional[DBState] = None
+        self._refresh_interval = 0.1
+        self._lock = asyncio.Lock()
+
+    def _detect_changes(self):
+        try:
+            self.db.prefix_db.try_catch_up_with_primary()
+        except:
+            self.log.exception('failed to update secondary db')
+            raise
+        state = self.db.prefix_db.db_state.get()
+        if not state or state.height <= 0:
+            return
+        # if state and self.last_state and self.db.headers and self.last_state.tip == self.db.coin.header_hash(self.db.headers[-1]):
+        #     return
+        if self.last_state and self.last_state.height > state.height:
+            self.log.warning("reorg detected, waiting until the writer has flushed the new blocks to advance")
+            return
+        last_height = 0 if not self.last_state else self.last_state.height
+        if self.last_state:
+            while True:
+                if self.db.headers[-1] == self.db.prefix_db.header.get(last_height, deserialize_value=False):
+                    self.log.info("connects to block %i", last_height)
+                    break
+                else:
+                    self.log.warning("disconnect block %i", last_height)
+                    self.unwind()
+                    last_height -= 1
+        self.db.read_db_state()
+        if not self.last_state or last_height < state.height:
+            for height in range(last_height + 1, state.height + 1):
+                self.log.info("advancing to %i", height)
+                self.advance(height)
+            self.clear_caches()
+            self.last_state = state
+
+    async def poll_for_changes(self):
+        await asyncio.get_event_loop().run_in_executor(self._executor, self._detect_changes)
+
+    async def refresh_blocks_forever(self, synchronized: asyncio.Event):
+        while True:
+            try:
+                async with self._lock:
+                    await self.poll_for_changes()
+            except asyncio.CancelledError:
+                raise
+            except:
+                self.log.exception("blockchain reader main loop encountered an unexpected error")
+                raise
+            await asyncio.sleep(self._refresh_interval)
+            synchronized.set()
+
+    def clear_caches(self):
+        pass
+
+    def advance(self, height: int):
+        tx_count = self.db.prefix_db.tx_count.get(height).tx_count
+        assert tx_count not in self.db.tx_counts, f'boom {tx_count} in {len(self.db.tx_counts)} tx counts'
+        assert len(self.db.tx_counts) == height, f"{len(self.db.tx_counts)} != {height}"
+        self.db.tx_counts.append(tx_count)
+        self.db.headers.append(self.db.prefix_db.header.get(height, deserialize_value=False))
+
+    def unwind(self):
+        self.db.tx_counts.pop()
+        self.db.headers.pop()
+
+    async def start(self):
+        if not self._executor:
+            self._executor = ThreadPoolExecutor(self._thread_workers, thread_name_prefix=self._thread_prefix)
+            self.db._executor = self._executor
+
+
+class BlockchainReaderServer(BlockchainReader):
+    def __init__(self, env):
+        super().__init__(env, 'lbry-reader', thread_workers=1, thread_prefix='hub-worker')
+        self.history_cache = {}
+        self.resolve_outputs_cache = {}
+        self.resolve_cache = {}
+        self.notifications_to_send = []
+        self.status_server = StatusServer()
+        self.daemon = env.coin.DAEMON(env.coin, env.daemon_url)  # only needed for broadcasting txs
+        self.prometheus_server: typing.Optional[PrometheusServer] = None
+        self.mempool = MemPool(self.env.coin, self.db)
+        self.session_manager = LBRYSessionManager(
+            env, self.db, self.mempool, self.history_cache, self.resolve_cache,
+            self.resolve_outputs_cache, self.daemon,
+            self.shutdown_event,
+            on_available_callback=self.status_server.set_available,
+            on_unavailable_callback=self.status_server.set_unavailable
+        )
+        self.mempool.session_manager = self.session_manager
+        self.es_notifications = asyncio.Queue()
+        self.es_notification_client = ElasticNotifierClientProtocol(self.es_notifications)
+        self.synchronized = asyncio.Event()
+        self._es_height = None
+        self._es_block_hash = None
+
+    def clear_caches(self):
+        self.history_cache.clear()
+        self.resolve_outputs_cache.clear()
+        self.resolve_cache.clear()
+        # self.clear_search_cache()
+        # self.mempool.notified_mempool_txs.clear()
+
+    def clear_search_cache(self):
+        self.session_manager.search_index.clear_caches()
+
+    def advance(self, height: int):
+        super().advance(height)
+        touched_hashXs = self.db.prefix_db.touched_hashX.get(height).touched_hashXs
+        self.notifications_to_send.append((set(touched_hashXs), height))
+
+    def _detect_changes(self):
+        super()._detect_changes()
+        self.mempool.raw_mempool.clear()
+        self.mempool.raw_mempool.update(
+            {k.tx_hash: v.raw_tx for k, v in self.db.prefix_db.mempool_tx.iterate()}
+        )
+
+    async def poll_for_changes(self):
+        await super().poll_for_changes()
+        if self.db.fs_height <= 0:
+            return
+        self.status_server.set_height(self.db.fs_height, self.db.db_tip)
+        if self.notifications_to_send:
+            for (touched, height) in self.notifications_to_send:
+                await self.mempool.on_block(touched, height)
+                self.log.info("reader advanced to %i", height)
+                if self._es_height == self.db.db_height:
+                    self.synchronized.set()
+        await self.mempool.refresh_hashes(self.db.db_height)
+        self.notifications_to_send.clear()
+
+    async def receive_es_notifications(self, synchronized: asyncio.Event):
+        await asyncio.get_event_loop().create_connection(
+            lambda: self.es_notification_client, '127.0.0.1', self.env.elastic_notifier_port
+        )
+        synchronized.set()
+        try:
+            while True:
+                self._es_height, self._es_block_hash = await self.es_notifications.get()
+                self.clear_search_cache()
+                if self.last_state and self._es_block_hash == self.last_state.tip:
+                    self.synchronized.set()
+                    self.log.info("es and reader are in sync")
+                else:
+                    self.log.info("es and reader are not yet in sync %s vs %s", self._es_height, self.db.db_height)
+        finally:
+            self.es_notification_client.close()
+
+    async def start(self):
+        await super().start()
+        env = self.env
+        min_str, max_str = env.coin.SESSIONCLS.protocol_min_max_strings()
+        self.log.info(f'software version: {lbry.__version__}')
+        self.log.info(f'supported protocol versions: {min_str}-{max_str}')
+        self.log.info(f'event loop policy: {env.loop_policy}')
+        self.log.info(f'reorg limit is {env.reorg_limit:,d} blocks')
+        await self.daemon.height()
+
+        def _start_cancellable(run, *args):
+            _flag = asyncio.Event()
+            self.cancellable_tasks.append(asyncio.ensure_future(run(*args, _flag)))
+            return _flag.wait()
+
+        self.db.open_db()
+        await self.db.initialize_caches()
+
+        self.last_state = self.db.read_db_state()
+
+        await self.start_prometheus()
+        if self.env.udp_port and int(self.env.udp_port):
+            await self.status_server.start(
+                0, bytes.fromhex(self.env.coin.GENESIS_HASH)[::-1], self.env.country,
+                self.env.host, self.env.udp_port, self.env.allow_lan_udp
+            )
+        await _start_cancellable(self.receive_es_notifications)
+        await _start_cancellable(self.refresh_blocks_forever)
+        await self.session_manager.search_index.start()
+        await _start_cancellable(self.session_manager.serve, self.mempool)
+
+    async def stop(self):
+        self.status_server.stop()
+        async with self._lock:
+            for task in reversed(self.cancellable_tasks):
+                task.cancel()
+            await asyncio.wait(self.cancellable_tasks)
+        self.session_manager.search_index.stop()
+        self.db.close()
+        if self.prometheus_server:
+            await self.prometheus_server.stop()
+            self.prometheus_server = None
+        await self.daemon.close()
+        self._executor.shutdown(wait=True)
+        self._executor = None
+        self.shutdown_event.set()
+
+    def run(self):
+        loop = asyncio.get_event_loop()
+
+        def __exit():
+            raise SystemExit()
+        try:
+            loop.add_signal_handler(signal.SIGINT, __exit)
+            loop.add_signal_handler(signal.SIGTERM, __exit)
+            loop.run_until_complete(self.start())
+            loop.run_until_complete(self.shutdown_event.wait())
+        except (SystemExit, KeyboardInterrupt):
+            pass
+        finally:
+            loop.run_until_complete(self.stop())
+
+    async def start_prometheus(self):
+        if not self.prometheus_server and self.env.prometheus_port:
+            self.prometheus_server = PrometheusServer()
+            await self.prometheus_server.start("0.0.0.0", self.env.prometheus_port)

lbry/wallet/server/cli.py

@@ -0,0 +1,56 @@
+import logging
+import traceback
+import argparse
+from lbry.wallet.server.env import Env
+from lbry.wallet.server.block_processor import BlockProcessor
+from lbry.wallet.server.chain_reader import BlockchainReaderServer
+from lbry.wallet.server.db.elasticsearch.sync import ElasticWriter
+
+
+def get_args_and_setup_logging(name):
+    parser = argparse.ArgumentParser(
+        prog=name
+    )
+    Env.contribute_to_arg_parser(parser)
+    args = parser.parse_args()
+    logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)-4s %(name)s:%(lineno)d: %(message)s")
+    logging.getLogger('aiohttp').setLevel(logging.WARNING)
+    logging.getLogger('elasticsearch').setLevel(logging.WARNING)
+    return args
+
+
+def run_writer_forever():
+    args = get_args_and_setup_logging('lbry-hub-writer')
+    try:
+        block_processor = BlockProcessor(Env.from_arg_parser(args))
+        block_processor.run()
+    except Exception:
+        traceback.print_exc()
+        logging.critical('block processor terminated abnormally')
+    else:
+        logging.info('block processor terminated normally')
+
+
+def run_server_forever():
+    args = get_args_and_setup_logging('lbry-hub-server')
+
+    try:
+        server = BlockchainReaderServer(Env.from_arg_parser(args))
+        server.run()
+    except Exception:
+        traceback.print_exc()
+        logging.critical('server terminated abnormally')
+    else:
+        logging.info('server terminated normally')
+
+
+def run_es_sync_forever():
+    args = get_args_and_setup_logging('lbry-hub-elastic-sync')
+    try:
+        server = ElasticWriter(Env.from_arg_parser(args))
+        server.run()
+    except Exception:
+        traceback.print_exc()
+        logging.critical('es writer terminated abnormally')
+    else:
+        logging.info('es writer terminated normally')

lbry/wallet/server/coin.py

@@ -0,0 +1,381 @@
+import re
+import struct
+from typing import List
+from hashlib import sha256
+from decimal import Decimal
+from collections import namedtuple
+
+import lbry.wallet.server.tx as lib_tx
+from lbry.wallet.script import OutputScript, OP_CLAIM_NAME, OP_UPDATE_CLAIM, OP_SUPPORT_CLAIM
+from lbry.wallet.server.tx import DeserializerSegWit
+from lbry.wallet.server.util import cachedproperty, subclasses
+from lbry.wallet.server.hash import Base58, hash160, double_sha256, hash_to_hex_str, HASHX_LEN
+from lbry.wallet.server.daemon import Daemon, LBCDaemon
+from lbry.wallet.server.script import ScriptPubKey, OpCodes
+from lbry.wallet.server.session import LBRYElectrumX, LBRYSessionManager
+
+
+Block = namedtuple("Block", "raw header transactions")
+OP_RETURN = OpCodes.OP_RETURN
+
+
+class CoinError(Exception):
+    """Exception raised for coin-related errors."""
+
+
+class Coin:
+    """Base class of coin hierarchy."""
+
+    REORG_LIMIT = 200
+    # Not sure if these are coin-specific
+    RPC_URL_REGEX = re.compile('.+@(\\[[0-9a-fA-F:]+\\]|[^:]+)(:[0-9]+)?')
+    VALUE_PER_COIN = 100000000
+    CHUNK_SIZE = 2016
+    BASIC_HEADER_SIZE = 80
+    STATIC_BLOCK_HEADERS = True
+    SESSIONCLS = LBRYElectrumX
+    DESERIALIZER = lib_tx.Deserializer
+    DAEMON = Daemon
+    SESSION_MANAGER = LBRYSessionManager
+    HEADER_VALUES = [
+        'version', 'prev_block_hash', 'merkle_root', 'timestamp', 'bits', 'nonce'
+    ]
+    HEADER_UNPACK = struct.Struct('< I 32s 32s I I I').unpack_from
+    MEMPOOL_HISTOGRAM_REFRESH_SECS = 500
+    XPUB_VERBYTES = bytes('????', 'utf-8')
+    XPRV_VERBYTES = bytes('????', 'utf-8')
+    ENCODE_CHECK = Base58.encode_check
+    DECODE_CHECK = Base58.decode_check
+    # Peer discovery
+    PEER_DEFAULT_PORTS = {'t': '50001', 's': '50002'}
+    PEERS: List[str] = []
+
+    @classmethod
+    def lookup_coin_class(cls, name, net):
+        """Return a coin class given name and network.
+
+        Raise an exception if unrecognised."""
+        req_attrs = ['TX_COUNT', 'TX_COUNT_HEIGHT', 'TX_PER_BLOCK']
+        for coin in subclasses(Coin):
+            if (coin.NAME.lower() == name.lower() and
+                    coin.NET.lower() == net.lower()):
+                coin_req_attrs = req_attrs.copy()
+                missing = [attr for attr in coin_req_attrs
+                           if not hasattr(coin, attr)]
+                if missing:
+                    raise CoinError(f'coin {name} missing {missing} attributes')
+                return coin
+        raise CoinError(f'unknown coin {name} and network {net} combination')
+
+    @classmethod
+    def sanitize_url(cls, url):
+        # Remove surrounding ws and trailing /s
+        url = url.strip().rstrip('/')
+        match = cls.RPC_URL_REGEX.match(url)
+        if not match:
+            raise CoinError(f'invalid daemon URL: "{url}"')
+        if match.groups()[1] is None:
+            url += f':{cls.RPC_PORT:d}'
+        if not url.startswith('http://') and not url.startswith('https://'):
+            url = 'http://' + url
+        return url + '/'
+
+    @classmethod
+    def genesis_block(cls, block):
+        """Check the Genesis block is the right one for this coin.
+
+        Return the block less its unspendable coinbase.
+        """
+        header = cls.block_header(block, 0)
+        header_hex_hash = hash_to_hex_str(cls.header_hash(header))
+        if header_hex_hash != cls.GENESIS_HASH:
+            raise CoinError(f'genesis block has hash {header_hex_hash} expected {cls.GENESIS_HASH}')
+
+        return header + bytes(1)
+
+    @classmethod
+    def hashX_from_script(cls, script):
+        """Returns a hashX from a script, or None if the script is provably
+        unspendable so the output can be dropped.
+        """
+        if script and script[0] == OP_RETURN:
+            return None
+        return sha256(script).digest()[:HASHX_LEN]
+
+    @staticmethod
+    def lookup_xverbytes(verbytes):
+        """Return a (is_xpub, coin_class) pair given xpub/xprv verbytes."""
+        # Order means BTC testnet will override NMC testnet
+        for coin in subclasses(Coin):
+            if verbytes == coin.XPUB_VERBYTES:
+                return True, coin
+            if verbytes == coin.XPRV_VERBYTES:
+                return False, coin
+        raise CoinError('version bytes unrecognised')
+
+    @classmethod
+    def address_to_hashX(cls, address):
+        """Return a hashX given a coin address."""
+        return cls.hashX_from_script(cls.pay_to_address_script(address))
+
+    @classmethod
+    def P2PKH_address_from_hash160(cls, hash160):
+        """Return a P2PKH address given a public key."""
+        assert len(hash160) == 20
+        return cls.ENCODE_CHECK(cls.P2PKH_VERBYTE + hash160)
+
+    @classmethod
+    def P2PKH_address_from_pubkey(cls, pubkey):
+        """Return a coin address given a public key."""
+        return cls.P2PKH_address_from_hash160(hash160(pubkey))
+
+    @classmethod
+    def P2SH_address_from_hash160(cls, hash160):
+        """Return a coin address given a hash160."""
+        assert len(hash160) == 20
+        return cls.ENCODE_CHECK(cls.P2SH_VERBYTES[0] + hash160)
+
+    @classmethod
+    def hash160_to_P2PKH_script(cls, hash160):
+        return ScriptPubKey.P2PKH_script(hash160)
+
+    @classmethod
+    def hash160_to_P2PKH_hashX(cls, hash160):
+        return cls.hashX_from_script(cls.hash160_to_P2PKH_script(hash160))
+
+    @classmethod
+    def pay_to_address_script(cls, address):
+        """Return a pubkey script that pays to a pubkey hash.
+
+        Pass the address (either P2PKH or P2SH) in base58 form.
+        """
+        raw = cls.DECODE_CHECK(address)
+
+        # Require version byte(s) plus hash160.
+        verbyte = -1
+        verlen = len(raw) - 20
+        if verlen > 0:
+            verbyte, hash160 = raw[:verlen], raw[verlen:]
+
+        if verbyte == cls.P2PKH_VERBYTE:
+            return cls.hash160_to_P2PKH_script(hash160)
+        if verbyte in cls.P2SH_VERBYTES:
+            return ScriptPubKey.P2SH_script(hash160)
+
+        raise CoinError(f'invalid address: {address}')
+
+    @classmethod
+    def privkey_WIF(cls, privkey_bytes, compressed):
+        """Return the private key encoded in Wallet Import Format."""
+        payload = bytearray(cls.WIF_BYTE) + privkey_bytes
+        if compressed:
+            payload.append(0x01)
+        return cls.ENCODE_CHECK(payload)
+
+    @classmethod
+    def header_hash(cls, header):
+        """Given a header return hash"""
+        return double_sha256(header)
+
+    @classmethod
+    def header_prevhash(cls, header):
+        """Given a header return previous hash"""
+        return header[4:36]
+
+    @classmethod
+    def static_header_offset(cls, height):
+        """Given a header height return its offset in the headers file.
+
+        If header sizes change at some point, this is the only code
+        that needs updating."""
+        assert cls.STATIC_BLOCK_HEADERS
+        return height * cls.BASIC_HEADER_SIZE
+
+    @classmethod
+    def static_header_len(cls, height):
+        """Given a header height return its length."""
+        return (cls.static_header_offset(height + 1)
+                - cls.static_header_offset(height))
+
+    @classmethod
+    def block_header(cls, block, height):
+        """Returns the block header given a block and its height."""
+        return block[:cls.static_header_len(height)]
+
+    @classmethod
+    def block(cls, raw_block, height):
+        """Return a Block namedtuple given a raw block and its height."""
+        header = cls.block_header(raw_block, height)
+        txs = cls.DESERIALIZER(raw_block, start=len(header)).read_tx_block()
+        return Block(raw_block, header, txs)
+
+    @classmethod
+    def transaction(cls, raw_tx: bytes):
+        """Return a Block namedtuple given a raw block and its height."""
+        return cls.DESERIALIZER(raw_tx).read_tx()
+
+    @classmethod
+    def decimal_value(cls, value):
+        """Return the number of standard coin units as a Decimal given a
+        quantity of smallest units.
+
+        For example 1 BTC is returned for 100 million satoshis.
+        """
+        return Decimal(value) / cls.VALUE_PER_COIN
+
+    @classmethod
+    def electrum_header(cls, header, height):
+        h = dict(zip(cls.HEADER_VALUES, cls.HEADER_UNPACK(header)))
+        # Add the height that is not present in the header itself
+        h['block_height'] = height
+        # Convert bytes to str
+        h['prev_block_hash'] = hash_to_hex_str(h['prev_block_hash'])
+        h['merkle_root'] = hash_to_hex_str(h['merkle_root'])
+        return h
+
+
+class LBC(Coin):
+    DAEMON = LBCDaemon
+    SESSIONCLS = LBRYElectrumX
+    SESSION_MANAGER = LBRYSessionManager
+    DESERIALIZER = DeserializerSegWit
+    NAME = "LBRY"
+    SHORTNAME = "LBC"
+    NET = "mainnet"
+    BASIC_HEADER_SIZE = 112
+    CHUNK_SIZE = 96
+    XPUB_VERBYTES = bytes.fromhex("0488b21e")
+    XPRV_VERBYTES = bytes.fromhex("0488ade4")
+    P2PKH_VERBYTE = bytes.fromhex("55")
+    P2SH_VERBYTES = bytes.fromhex("7A")
+    WIF_BYTE = bytes.fromhex("1C")
+    GENESIS_HASH = ('9c89283ba0f3227f6c03b70216b9f665'
+                    'f0118d5e0fa729cedf4fb34d6a34f463')
+    TX_COUNT = 2716936
+    TX_COUNT_HEIGHT = 329554
+    TX_PER_BLOCK = 1
+    RPC_PORT = 9245
+    REORG_LIMIT = 200
+
+    nOriginalClaimExpirationTime = 262974
+    nExtendedClaimExpirationTime = 2102400
+    nExtendedClaimExpirationForkHeight = 400155
+    nNormalizedNameForkHeight = 539940  # targeting 21 March 2019
+    nMinTakeoverWorkaroundHeight = 496850
+    nMaxTakeoverWorkaroundHeight = 658300  # targeting 30 Oct 2019
+    nWitnessForkHeight = 680770  # targeting 11 Dec 2019
+    nAllClaimsInMerkleForkHeight = 658310  # targeting 30 Oct 2019
+    proportionalDelayFactor = 32
+    maxTakeoverDelay = 4032
+
+    PEERS = [
+    ]
+
+    @classmethod
+    def genesis_block(cls, block):
+        '''Check the Genesis block is the right one for this coin.
+
+        Return the block less its unspendable coinbase.
+        '''
+        header = cls.block_header(block, 0)
+        header_hex_hash = hash_to_hex_str(cls.header_hash(header))
+        if header_hex_hash != cls.GENESIS_HASH:
+            raise CoinError(f'genesis block has hash {header_hex_hash} expected {cls.GENESIS_HASH}')
+
+        return block
+
+    @classmethod
+    def electrum_header(cls, header, height):
+        version, = struct.unpack('<I', header[:4])
+        timestamp, bits, nonce = struct.unpack('<III', header[100:112])
+        return {
+            'version': version,
+            'prev_block_hash': hash_to_hex_str(header[4:36]),
+            'merkle_root': hash_to_hex_str(header[36:68]),
+            'claim_trie_root': hash_to_hex_str(header[68:100]),
+            'timestamp': timestamp,
+            'bits': bits,
+            'nonce': nonce,
+            'block_height': height,
+            }
+
+    @cachedproperty
+    def address_handlers(self):
+        return ScriptPubKey.PayToHandlers(
+            address=self.P2PKH_address_from_hash160,
+            script_hash=self.P2SH_address_from_hash160,
+            pubkey=self.P2PKH_address_from_pubkey,
+            unspendable=lambda: None,
+            strange=self.claim_address_handler,
+        )
+
+    @classmethod
+    def address_from_script(cls, script):
+        '''Given a pk_script, return the address it pays to, or None.'''
+        return ScriptPubKey.pay_to(cls.address_handlers, script)
+
+    @classmethod
+    def claim_address_handler(cls, script):
+        '''Parse a claim script, returns the address
+        '''
+        output = OutputScript(script)
+        if output.is_pay_pubkey_hash:
+            return cls.P2PKH_address_from_hash160(output.values['pubkey_hash'])
+        if output.is_pay_script_hash:
+            return cls.P2SH_address_from_hash160(output.values['script_hash'])
+        if output.is_pay_pubkey:
+            return cls.P2PKH_address_from_pubkey(output.values['pubkey'])
+        if output.is_return_data:
+            return None
+        return None
+
+    @classmethod
+    def hashX_from_script(cls, script):
+        '''
+        Overrides electrumx hashX from script by extracting addresses from claim scripts.
+        '''
+        if script and script[0] == OpCodes.OP_RETURN or not script:
+            return None
+        if script[0] in [
+            OP_CLAIM_NAME,
+            OP_UPDATE_CLAIM,
+            OP_SUPPORT_CLAIM,
+        ]:
+            return cls.address_to_hashX(cls.claim_address_handler(script))
+        else:
+            return sha256(script).digest()[:HASHX_LEN]
+
+    @classmethod
+    def get_expiration_height(cls, last_updated_height: int, extended: bool = False) -> int:
+        if extended:
+            return last_updated_height + cls.nExtendedClaimExpirationTime
+        if last_updated_height < cls.nExtendedClaimExpirationForkHeight:
+            return last_updated_height + cls.nOriginalClaimExpirationTime
+        return last_updated_height + cls.nExtendedClaimExpirationTime
+
+    @classmethod
+    def get_delay_for_name(cls, blocks_of_continuous_ownership: int) -> int:
+        return min(blocks_of_continuous_ownership // cls.proportionalDelayFactor, cls.maxTakeoverDelay)
+
+
+class LBCRegTest(LBC):
+    NET = "regtest"
+    GENESIS_HASH = '6e3fcf1299d4ec5d79c3a4c91d624a4acf9e2e173d95a1a0504f677669687556'
+    XPUB_VERBYTES = bytes.fromhex('043587cf')
+    XPRV_VERBYTES = bytes.fromhex('04358394')
+    P2PKH_VERBYTE = bytes.fromhex("6f")
+    P2SH_VERBYTES = bytes.fromhex("c4")
+
+    nOriginalClaimExpirationTime = 500
+    nExtendedClaimExpirationTime = 600
+    nExtendedClaimExpirationForkHeight = 800
+    nNormalizedNameForkHeight = 250
+    nMinTakeoverWorkaroundHeight = -1
+    nMaxTakeoverWorkaroundHeight = -1
+    nWitnessForkHeight = 150
+    nAllClaimsInMerkleForkHeight = 350
+
+
+class LBCTestNet(LBCRegTest):
+    NET = "testnet"
+    GENESIS_HASH = '9c89283ba0f3227f6c03b70216b9f665f0118d5e0fa729cedf4fb34d6a34f463'

lbry/wallet/server/daemon.py

@@ -0,0 +1,340 @@
+import asyncio
+import itertools
+import json
+import time
+from functools import wraps
+
+import aiohttp
+from prometheus_client import Gauge, Histogram
+from lbry.utils import LRUCacheWithMetrics
+from lbry.wallet.rpc.jsonrpc import RPCError
+from lbry.wallet.server.util import hex_to_bytes, class_logger
+from lbry.wallet.rpc import JSONRPC
+
+
+class DaemonError(Exception):
+    """Raised when the daemon returns an error in its results."""
+
+
+class WarmingUpError(Exception):
+    """Internal - when the daemon is warming up."""
+
+
+class WorkQueueFullError(Exception):
+    """Internal - when the daemon's work queue is full."""
+
+
+NAMESPACE = "wallet_server"
+
+
+class Daemon:
+    """Handles connections to a daemon at the given URL."""
+
+    WARMING_UP = -28
+    id_counter = itertools.count()
+
+    lbrycrd_request_time_metric = Histogram(
+        "lbrycrd_request", "lbrycrd requests count", namespace=NAMESPACE, labelnames=("method",)
+    )
+    lbrycrd_pending_count_metric = Gauge(
+        "lbrycrd_pending_count", "Number of lbrycrd rpcs that are in flight", namespace=NAMESPACE,
+        labelnames=("method",)
+    )
+
+    def __init__(self, coin, url, max_workqueue=10, init_retry=0.25,
+                 max_retry=4.0):
+        self.coin = coin
+        self.logger = class_logger(__name__, self.__class__.__name__)
+        self.set_url(url)
+        # Limit concurrent RPC calls to this number.
+        # See DEFAULT_HTTP_WORKQUEUE in bitcoind, which is typically 16
+        self.workqueue_semaphore = asyncio.Semaphore(value=max_workqueue)
+        self.init_retry = init_retry
+        self.max_retry = max_retry
+        self._height = None
+        self.available_rpcs = {}
+        self.connector = aiohttp.TCPConnector(ssl=False)
+        self._block_hash_cache = LRUCacheWithMetrics(100000)
+        self._block_cache = LRUCacheWithMetrics(2 ** 13, metric_name='block', namespace=NAMESPACE)
+
+    async def close(self):
+        if self.connector:
+            await self.connector.close()
+            self.connector = None
+
+    def set_url(self, url):
+        """Set the URLS to the given list, and switch to the first one."""
+        urls = url.split(',')
+        urls = [self.coin.sanitize_url(url) for url in urls]
+        for n, url in enumerate(urls):
+            status = '' if n else ' (current)'
+            logged_url = self.logged_url(url)
+            self.logger.info(f'daemon #{n + 1} at {logged_url}{status}')
+        self.url_index = 0
+        self.urls = urls
+
+    def current_url(self):
+        """Returns the current daemon URL."""
+        return self.urls[self.url_index]
+
+    def logged_url(self, url=None):
+        """The host and port part, for logging."""
+        url = url or self.current_url()
+        return url[url.rindex('@') + 1:]
+
+    def failover(self):
+        """Call to fail-over to the next daemon URL.
+
+        Returns False if there is only one, otherwise True.
+        """
+        if len(self.urls) > 1:
+            self.url_index = (self.url_index + 1) % len(self.urls)
+            self.logger.info(f'failing over to {self.logged_url()}')
+            return True
+        return False
+
+    def client_session(self):
+        """An aiohttp client session."""
+        return aiohttp.ClientSession(connector=self.connector, connector_owner=False)
+
+    async def _send_data(self, data):
+        if not self.connector:
+            raise asyncio.CancelledError('Tried to send request during shutdown.')
+        async with self.workqueue_semaphore:
+            async with self.client_session() as session:
+                async with session.post(self.current_url(), data=data) as resp:
+                    kind = resp.headers.get('Content-Type', None)
+                    if kind == 'application/json':
+                        return await resp.json()
+                    # bitcoind's HTTP protocol "handling" is a bad joke
+                    text = await resp.text()
+                    if 'Work queue depth exceeded' in text:
+                        raise WorkQueueFullError
+                    text = text.strip() or resp.reason
+                    self.logger.error(text)
+                    raise DaemonError(text)
+
+    async def _send(self, payload, processor):
+        """Send a payload to be converted to JSON.
+
+        Handles temporary connection issues.  Daemon response errors
+        are raise through DaemonError.
+        """
+
+        def log_error(error):
+            nonlocal last_error_log, retry
+            now = time.time()
+            if now - last_error_log > 60:
+                last_error_log = now
+                self.logger.error(f'{error}  Retrying occasionally...')
+            if retry == self.max_retry and self.failover():
+                retry = 0
+
+        on_good_message = None
+        last_error_log = 0
+        data = json.dumps(payload)
+        retry = self.init_retry
+        methods = tuple(
+            [payload['method']] if isinstance(payload, dict) else [request['method'] for request in payload]
+        )
+        while True:
+            try:
+                for method in methods:
+                    self.lbrycrd_pending_count_metric.labels(method=method).inc()
+                result = await self._send_data(data)
+                result = processor(result)
+                if on_good_message:
+                    self.logger.info(on_good_message)
+                return result
+            except asyncio.TimeoutError:
+                log_error('timeout error.')
+            except aiohttp.ServerDisconnectedError:
+                log_error('disconnected.')
+                on_good_message = 'connection restored'
+            except aiohttp.ClientConnectionError:
+                log_error('connection problem - is your daemon running?')
+                on_good_message = 'connection restored'
+            except aiohttp.ClientError as e:
+                log_error(f'daemon error: {e}')
+                on_good_message = 'running normally'
+            except WarmingUpError:
+                log_error('starting up checking blocks.')
+                on_good_message = 'running normally'
+            except WorkQueueFullError:
+                log_error('work queue full.')
+                on_good_message = 'running normally'
+            finally:
+                for method in methods:
+                    self.lbrycrd_pending_count_metric.labels(method=method).dec()
+            await asyncio.sleep(retry)
+            retry = max(min(self.max_retry, retry * 2), self.init_retry)
+
+    async def _send_single(self, method, params=None):
+        """Send a single request to the daemon."""
+
+        start = time.perf_counter()
+
+        def processor(result):
+            err = result['error']
+            if not err:
+                return result['result']
+            if err.get('code') == self.WARMING_UP:
+                raise WarmingUpError
+            raise DaemonError(err)
+
+        payload = {'method': method, 'id': next(self.id_counter)}
+        if params:
+            payload['params'] = params
+        result = await self._send(payload, processor)
+        self.lbrycrd_request_time_metric.labels(method=method).observe(time.perf_counter() - start)
+        return result
+
+    async def _send_vector(self, method, params_iterable, replace_errs=False):
+        """Send several requests of the same method.
+
+        The result will be an array of the same length as params_iterable.
+        If replace_errs is true, any item with an error is returned as None,
+        otherwise an exception is raised."""
+
+        start = time.perf_counter()
+
+        def processor(result):
+            errs = [item['error'] for item in result if item['error']]
+            if any(err.get('code') == self.WARMING_UP for err in errs):
+                raise WarmingUpError
+            if not errs or replace_errs:
+                return [item['result'] for item in result]
+            raise DaemonError(errs)
+
+        payload = [{'method': method, 'params': p, 'id': next(self.id_counter)}
+                   for p in params_iterable]
+        result = []
+        if payload:
+            result = await self._send(payload, processor)
+        self.lbrycrd_request_time_metric.labels(method=method).observe(time.perf_counter() - start)
+        return result
+
+    async def _is_rpc_available(self, method):
+        """Return whether given RPC method is available in the daemon.
+
+        Results are cached and the daemon will generally not be queried with
+        the same method more than once."""
+        available = self.available_rpcs.get(method)
+        if available is None:
+            available = True
+            try:
+                await self._send_single(method)
+            except DaemonError as e:
+                err = e.args[0]
+                error_code = err.get("code")
+                available = error_code != JSONRPC.METHOD_NOT_FOUND
+            self.available_rpcs[method] = available
+        return available
+
+    async def block_hex_hashes(self, first, count):
+        """Return the hex hashes of count block starting at height first."""
+        if first + count < (self.cached_height() or 0) - 200:
+            return await self._cached_block_hex_hashes(first, count)
+        params_iterable = ((h, ) for h in range(first, first + count))
+        return await self._send_vector('getblockhash', params_iterable)
+
+    async def _cached_block_hex_hashes(self, first, count):
+        """Return the hex hashes of count block starting at height first."""
+        cached = self._block_hash_cache.get((first, count))
+        if cached:
+            return cached
+        params_iterable = ((h, ) for h in range(first, first + count))
+        self._block_hash_cache[(first, count)] = await self._send_vector('getblockhash', params_iterable)
+        return self._block_hash_cache[(first, count)]
+
+    async def deserialised_block(self, hex_hash):
+        """Return the deserialised block with the given hex hash."""
+        if hex_hash not in self._block_cache:
+            block = await self._send_single('getblock', (hex_hash, 1))
+            self._block_cache[hex_hash] = block
+            return block
+        return self._block_cache[hex_hash]
+
+    async def raw_blocks(self, hex_hashes):
+        """Return the raw binary blocks with the given hex hashes."""
+        params_iterable = ((h, 0) for h in hex_hashes)
+        blocks = await self._send_vector('getblock', params_iterable)
+        # Convert hex string to bytes
+        return [hex_to_bytes(block) for block in blocks]
+
+    async def mempool_hashes(self):
+        """Update our record of the daemon's mempool hashes."""
+        return await self._send_single('getrawmempool')
+
+    async def estimatefee(self, block_count):
+        """Return the fee estimate for the block count.  Units are whole
+        currency units per KB, e.g. 0.00000995, or -1 if no estimate
+        is available.
+        """
+        args = (block_count, )
+        if await self._is_rpc_available('estimatesmartfee'):
+            estimate = await self._send_single('estimatesmartfee', args)
+            return estimate.get('feerate', -1)
+        return await self._send_single('estimatefee', args)
+
+    async def getnetworkinfo(self):
+        """Return the result of the 'getnetworkinfo' RPC call."""
+        return await self._send_single('getnetworkinfo')
+
+    async def relayfee(self):
+        """The minimum fee a low-priority tx must pay in order to be accepted
+        to the daemon's memory pool."""
+        network_info = await self.getnetworkinfo()
+        return network_info['relayfee']
+
+    async def getrawtransaction(self, hex_hash, verbose=False):
+        """Return the serialized raw transaction with the given hash."""
+        # Cast to int because some coin daemons are old and require it
+        return await self._send_single('getrawtransaction',
+                                       (hex_hash, int(verbose)))
+
+    async def getrawtransactions(self, hex_hashes, replace_errs=True):
+        """Return the serialized raw transactions with the given hashes.
+
+        Replaces errors with None by default."""
+        params_iterable = ((hex_hash, 0) for hex_hash in hex_hashes)
+        txs = await self._send_vector('getrawtransaction', params_iterable,
+                                      replace_errs=replace_errs)
+        # Convert hex strings to bytes
+        return [hex_to_bytes(tx) if tx else None for tx in txs]
+
+    async def broadcast_transaction(self, raw_tx):
+        """Broadcast a transaction to the network."""
+        return await self._send_single('sendrawtransaction', (raw_tx, ))
+
+    async def height(self):
+        """Query the daemon for its current height."""
+        self._height = await self._send_single('getblockcount')
+        return self._height
+
+    def cached_height(self):
+        """Return the cached daemon height.
+
+        If the daemon has not been queried yet this returns None."""
+        return self._height
+
+
+def handles_errors(decorated_function):
+    @wraps(decorated_function)
+    async def wrapper(*args, **kwargs):
+        try:
+            return await decorated_function(*args, **kwargs)
+        except DaemonError as daemon_error:
+            raise RPCError(1, daemon_error.args[0])
+    return wrapper
+
+
+class LBCDaemon(Daemon):
+    @handles_errors
+    async def getrawtransaction(self, hex_hash, verbose=False):
+        return await super().getrawtransaction(hex_hash=hex_hash, verbose=verbose)
+
+    @handles_errors
+    async def getclaimsforname(self, name):
+        '''Given a name, retrieves all claims matching that name.'''
+        return await self._send_single('getclaimsforname', (name,))

lbry/wallet/server/db/__init__.py

@@ -0,0 +1,45 @@
+import enum
+
+
+@enum.unique
+class DB_PREFIXES(enum.Enum):
+    claim_to_support = b'K'
+    support_to_claim = b'L'
+
+    claim_to_txo = b'E'
+    txo_to_claim = b'G'
+
+    claim_to_channel = b'I'
+    channel_to_claim = b'J'
+
+    claim_short_id_prefix = b'F'
+    effective_amount = b'D'
+    claim_expiration = b'O'
+
+    claim_takeover = b'P'
+    pending_activation = b'Q'
+    activated_claim_and_support = b'R'
+    active_amount = b'S'
+
+    repost = b'V'
+    reposted_claim = b'W'
+
+    undo = b'M'
+    touched_or_deleted = b'Y'
+
+    tx = b'B'
+    block_hash = b'C'
+    header = b'H'
+    tx_num = b'N'
+    tx_count = b'T'
+    tx_hash = b'X'
+    utxo = b'u'
+    hashx_utxo = b'h'
+    hashx_history = b'x'
+    db_state = b's'
+    channel_count = b'Z'
+    support_amount = b'a'
+    block_tx = b'b'
+    trending_notifications = b'c'
+    mempool_tx = b'd'
+    touched_hashX = b'e'

lbry/wallet/server/db/common.py

@@ -0,0 +1,477 @@
+import typing
+from typing import Optional
+from lbry.error import ResolveCensoredError
+
+CLAIM_TYPES = {
+    'stream': 1,
+    'channel': 2,
+    'repost': 3,
+    'collection': 4,
+}
+
+STREAM_TYPES = {
+    'video': 1,
+    'audio': 2,
+    'image': 3,
+    'document': 4,
+    'binary': 5,
+    'model': 6,
+}
+
+# 9/21/2020
+MOST_USED_TAGS = {
+    "gaming",
+    "people & blogs",
+    "entertainment",
+    "music",
+    "pop culture",
+    "education",
+    "technology",
+    "blockchain",
+    "news",
+    "funny",
+    "science & technology",
+    "learning",
+    "gameplay",
+    "news & politics",
+    "comedy",
+    "bitcoin",
+    "beliefs",
+    "nature",
+    "art",
+    "economics",
+    "film & animation",
+    "lets play",
+    "games",
+    "sports",
+    "howto & style",
+    "game",
+    "cryptocurrency",
+    "playstation 4",
+    "automotive",
+    "crypto",
+    "mature",
+    "sony interactive entertainment",
+    "walkthrough",
+    "tutorial",
+    "video game",
+    "weapons",
+    "playthrough",
+    "pc",
+    "anime",
+    "how to",
+    "btc",
+    "fun",
+    "ethereum",
+    "food",
+    "travel & events",
+    "minecraft",
+    "science",
+    "autos & vehicles",
+    "play",
+    "politics",
+    "commentary",
+    "twitch",
+    "ps4live",
+    "love",
+    "ps4",
+    "nonprofits & activism",
+    "ps4share",
+    "fortnite",
+    "xbox",
+    "porn",
+    "video games",
+    "trump",
+    "español",
+    "money",
+    "music video",
+    "nintendo",
+    "movie",
+    "coronavirus",
+    "donald trump",
+    "steam",
+    "trailer",
+    "android",
+    "podcast",
+    "xbox one",
+    "survival",
+    "audio",
+    "linux",
+    "travel",
+    "funny moments",
+    "litecoin",
+    "animation",
+    "gamer",
+    "lets",
+    "playstation",
+    "bitcoin news",
+    "history",
+    "xxx",
+    "fox news",
+    "dance",
+    "god",
+    "adventure",
+    "liberal",
+    "2020",
+    "horror",
+    "government",
+    "freedom",
+    "reaction",
+    "meme",
+    "photography",
+    "truth",
+    "health",
+    "lbry",
+    "family",
+    "online",
+    "eth",
+    "crypto news",
+    "diy",
+    "trading",
+    "gold",
+    "memes",
+    "world",
+    "space",
+    "lol",
+    "covid-19",
+    "rpg",
+    "humor",
+    "democrat",
+    "film",
+    "call of duty",
+    "tech",
+    "religion",
+    "conspiracy",
+    "rap",
+    "cnn",
+    "hangoutsonair",
+    "unboxing",
+    "fiction",
+    "conservative",
+    "cars",
+    "hoa",
+    "epic",
+    "programming",
+    "progressive",
+    "cryptocurrency news",
+    "classical",
+    "jesus",
+    "movies",
+    "book",
+    "ps3",
+    "republican",
+    "fitness",
+    "books",
+    "multiplayer",
+    "animals",
+    "pokemon",
+    "bitcoin price",
+    "facebook",
+    "sharefactory",
+    "criptomonedas",
+    "cod",
+    "bible",
+    "business",
+    "stream",
+    "comics",
+    "how",
+    "fail",
+    "nsfw",
+    "new music",
+    "satire",
+    "pets & animals",
+    "computer",
+    "classical music",
+    "indie",
+    "musica",
+    "msnbc",
+    "fps",
+    "mod",
+    "sport",
+    "sony",
+    "ripple",
+    "auto",
+    "rock",
+    "marvel",
+    "complete",
+    "mining",
+    "political",
+    "mobile",
+    "pubg",
+    "hip hop",
+    "flat earth",
+    "xbox 360",
+    "reviews",
+    "vlogging",
+    "latest news",
+    "hack",
+    "tarot",
+    "iphone",
+    "media",
+    "cute",
+    "christian",
+    "free speech",
+    "trap",
+    "war",
+    "remix",
+    "ios",
+    "xrp",
+    "spirituality",
+    "song",
+    "league of legends",
+    "cat"
+}
+
+MATURE_TAGS = [
+    'nsfw', 'porn', 'xxx', 'mature', 'adult', 'sex'
+]
+
+
+def normalize_tag(tag):
+    return tag.replace(" ", "_").replace("&", "and").replace("-", "_")
+
+
+COMMON_TAGS = {
+    tag: normalize_tag(tag) for tag in list(MOST_USED_TAGS)
+}
+
+INDEXED_LANGUAGES = [
+  'none',
+  'en',
+  'aa',
+  'ab',
+  'ae',
+  'af',
+  'ak',
+  'am',
+  'an',
+  'ar',
+  'as',
+  'av',
+  'ay',
+  'az',
+  'ba',
+  'be',
+  'bg',
+  'bh',
+  'bi',
+  'bm',
+  'bn',
+  'bo',
+  'br',
+  'bs',
+  'ca',
+  'ce',
+  'ch',
+  'co',
+  'cr',
+  'cs',
+  'cu',
+  'cv',
+  'cy',
+  'da',
+  'de',
+  'dv',
+  'dz',
+  'ee',
+  'el',
+  'eo',
+  'es',
+  'et',
+  'eu',
+  'fa',
+  'ff',
+  'fi',
+  'fj',
+  'fo',
+  'fr',
+  'fy',
+  'ga',
+  'gd',
+  'gl',
+  'gn',
+  'gu',
+  'gv',
+  'ha',
+  'he',
+  'hi',
+  'ho',
+  'hr',
+  'ht',
+  'hu',
+  'hy',
+  'hz',
+  'ia',
+  'id',
+  'ie',
+  'ig',
+  'ii',
+  'ik',
+  'io',
+  'is',
+  'it',
+  'iu',
+  'ja',
+  'jv',
+  'ka',
+  'kg',
+  'ki',
+  'kj',
+  'kk',
+  'kl',
+  'km',
+  'kn',
+  'ko',
+  'kr',
+  'ks',
+  'ku',
+  'kv',
+  'kw',
+  'ky',
+  'la',
+  'lb',
+  'lg',
+  'li',
+  'ln',
+  'lo',
+  'lt',
+  'lu',
+  'lv',
+  'mg',
+  'mh',
+  'mi',
+  'mk',
+  'ml',
+  'mn',
+  'mr',
+  'ms',
+  'mt',
+  'my',
+  'na',
+  'nb',
+  'nd',
+  'ne',
+  'ng',
+  'nl',
+  'nn',
+  'no',
+  'nr',
+  'nv',
+  'ny',
+  'oc',
+  'oj',
+  'om',
+  'or',
+  'os',
+  'pa',
+  'pi',
+  'pl',
+  'ps',
+  'pt',
+  'qu',
+  'rm',
+  'rn',
+  'ro',
+  'ru',
+  'rw',
+  'sa',
+  'sc',
+  'sd',
+  'se',
+  'sg',
+  'si',
+  'sk',
+  'sl',
+  'sm',
+  'sn',
+  'so',
+  'sq',
+  'sr',
+  'ss',
+  'st',
+  'su',
+  'sv',
+  'sw',
+  'ta',
+  'te',
+  'tg',
+  'th',
+  'ti',
+  'tk',
+  'tl',
+  'tn',
+  'to',
+  'tr',
+  'ts',
+  'tt',
+  'tw',
+  'ty',
+  'ug',
+  'uk',
+  'ur',
+  'uz',
+  've',
+  'vi',
+  'vo',
+  'wa',
+  'wo',
+  'xh',
+  'yi',
+  'yo',
+  'za',
+  'zh',
+  'zu'
+]
+
+
+class ResolveResult(typing.NamedTuple):
+    name: str
+    normalized_name: str
+    claim_hash: bytes
+    tx_num: int
+    position: int
+    tx_hash: bytes
+    height: int
+    amount: int
+    short_url: str
+    is_controlling: bool
+    canonical_url: str
+    creation_height: int
+    activation_height: int
+    expiration_height: int
+    effective_amount: int
+    support_amount: int
+    reposted: int
+    last_takeover_height: typing.Optional[int]
+    claims_in_channel: typing.Optional[int]
+    channel_hash: typing.Optional[bytes]
+    reposted_claim_hash: typing.Optional[bytes]
+    signature_valid: typing.Optional[bool]
+
+
+class TrendingNotification(typing.NamedTuple):
+    height: int
+    prev_amount: int
+    new_amount: int
+
+
+class UTXO(typing.NamedTuple):
+    tx_num: int
+    tx_pos: int
+    tx_hash: bytes
+    height: int
+    value: int
+
+
+OptionalResolveResultOrError = Optional[typing.Union[ResolveResult, ResolveCensoredError, LookupError, ValueError]]
+
+
+class ExpandedResolveResult(typing.NamedTuple):
+    stream: OptionalResolveResultOrError
+    channel: OptionalResolveResultOrError
+    repost: OptionalResolveResultOrError
+    reposted_channel: OptionalResolveResultOrError
+
+
+class DBError(Exception):
+    """Raised on general DB errors generally indicating corruption."""

lbry/wallet/server/db/elasticsearch/__init__.py

@@ -0,0 +1 @@
+from .search import SearchIndex

lbry/wallet/server/db/elasticsearch/common.py

@@ -0,0 +1,150 @@
+from decimal import Decimal
+from typing import Iterable
+
+from lbry.error import TooManyClaimSearchParametersError
+from lbry.schema.tags import clean_tags
+from lbry.schema.url import normalize_name
+from lbry.wallet.server.db.common import CLAIM_TYPES, STREAM_TYPES
+from lbry.wallet.server.db.elasticsearch.constants import REPLACEMENTS, FIELDS, TEXT_FIELDS, RANGE_FIELDS
+
+
+def expand_query(**kwargs):
+    if "amount_order" in kwargs:
+        kwargs["limit"] = 1
+        kwargs["order_by"] = "effective_amount"
+        kwargs["offset"] = int(kwargs["amount_order"]) - 1
+    if 'name' in kwargs:
+        kwargs['name'] = normalize_name(kwargs.pop('name'))
+    if kwargs.get('is_controlling') is False:
+        kwargs.pop('is_controlling')
+    query = {'must': [], 'must_not': []}
+    collapse = None
+    if 'fee_currency' in kwargs and kwargs['fee_currency'] is not None:
+        kwargs['fee_currency'] = kwargs['fee_currency'].upper()
+    for key, value in kwargs.items():
+        key = key.replace('claim.', '')
+        many = key.endswith('__in') or isinstance(value, list)
+        if many and len(value) > 2048:
+            raise TooManyClaimSearchParametersError(key, 2048)
+        if many:
+            key = key.replace('__in', '')
+            value = list(filter(None, value))
+        if value is None or isinstance(value, list) and len(value) == 0:
+            continue
+        key = REPLACEMENTS.get(key, key)
+        if key in FIELDS:
+            partial_id = False
+            if key == 'claim_type':
+                if isinstance(value, str):
+                    value = CLAIM_TYPES[value]
+                else:
+                    value = [CLAIM_TYPES[claim_type] for claim_type in value]
+            elif key == 'stream_type':
+                value = [STREAM_TYPES[value]] if isinstance(value, str) else list(map(STREAM_TYPES.get, value))
+            if key == '_id':
+                if isinstance(value, Iterable):
+                    value = [item[::-1].hex() for item in value]
+                else:
+                    value = value[::-1].hex()
+            if not many and key in ('_id', 'claim_id') and len(value) < 20:
+                partial_id = True
+            if key in ('signature_valid', 'has_source'):
+                continue  # handled later
+            if key in TEXT_FIELDS:
+                key += '.keyword'
+            ops = {'<=': 'lte', '>=': 'gte', '<': 'lt', '>': 'gt'}
+            if partial_id:
+                query['must'].append({"prefix": {"claim_id": value}})
+            elif key in RANGE_FIELDS and isinstance(value, str) and value[0] in ops:
+                operator_length = 2 if value[:2] in ops else 1
+                operator, value = value[:operator_length], value[operator_length:]
+                if key == 'fee_amount':
+                    value = str(Decimal(value)*1000)
+                query['must'].append({"range": {key: {ops[operator]: value}}})
+            elif many:
+                query['must'].append({"terms": {key: value}})
+            else:
+                if key == 'fee_amount':
+                    value = str(Decimal(value)*1000)
+                query['must'].append({"term": {key: {"value": value}}})
+        elif key == 'not_channel_ids':
+            for channel_id in value:
+                query['must_not'].append({"term": {'channel_id.keyword': channel_id}})
+                query['must_not'].append({"term": {'_id': channel_id}})
+        elif key == 'channel_ids':
+            query['must'].append({"terms": {'channel_id.keyword': value}})
+        elif key == 'claim_ids':
+            query['must'].append({"terms": {'claim_id.keyword': value}})
+        elif key == 'media_types':
+            query['must'].append({"terms": {'media_type.keyword': value}})
+        elif key == 'any_languages':
+            query['must'].append({"terms": {'languages': clean_tags(value)}})
+        elif key == 'any_languages':
+            query['must'].append({"terms": {'languages': value}})
+        elif key == 'all_languages':
+            query['must'].extend([{"term": {'languages': tag}} for tag in value])
+        elif key == 'any_tags':
+            query['must'].append({"terms": {'tags.keyword': clean_tags(value)}})
+        elif key == 'all_tags':
+            query['must'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
+        elif key == 'not_tags':
+            query['must_not'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
+        elif key == 'not_claim_id':
+            query['must_not'].extend([{"term": {'claim_id.keyword': cid}} for cid in value])
+        elif key == 'limit_claims_per_channel':
+            collapse = ('channel_id.keyword', value)
+    if kwargs.get('has_channel_signature'):
+        query['must'].append({"exists": {"field": "signature"}})
+        if 'signature_valid' in kwargs:
+            query['must'].append({"term": {"is_signature_valid": bool(kwargs["signature_valid"])}})
+    elif 'signature_valid' in kwargs:
+        query.setdefault('should', [])
+        query["minimum_should_match"] = 1
+        query['should'].append({"bool": {"must_not": {"exists": {"field": "signature"}}}})
+        query['should'].append({"term": {"is_signature_valid": bool(kwargs["signature_valid"])}})
+    if 'has_source' in kwargs:
+        query.setdefault('should', [])
+        query["minimum_should_match"] = 1
+        is_stream_or_repost = {"terms": {"claim_type": [CLAIM_TYPES['stream'], CLAIM_TYPES['repost']]}}
+        query['should'].append(
+            {"bool": {"must": [{"match": {"has_source": kwargs['has_source']}}, is_stream_or_repost]}})
+        query['should'].append({"bool": {"must_not": [is_stream_or_repost]}})
+        query['should'].append({"bool": {"must": [{"term": {"reposted_claim_type": CLAIM_TYPES['channel']}}]}})
+    if kwargs.get('text'):
+        query['must'].append(
+                    {"simple_query_string":
+                         {"query": kwargs["text"], "fields": [
+                             "claim_name^4", "channel_name^8", "title^1", "description^.5", "author^1", "tags^.5"
+                         ]}})
+    query = {
+        "_source": {"excludes": ["description", "title"]},
+        'query': {'bool': query},
+        "sort": [],
+    }
+    if "limit" in kwargs:
+        query["size"] = kwargs["limit"]
+    if 'offset' in kwargs:
+        query["from"] = kwargs["offset"]
+    if 'order_by' in kwargs:
+        if isinstance(kwargs["order_by"], str):
+            kwargs["order_by"] = [kwargs["order_by"]]
+        for value in kwargs['order_by']:
+            if 'trending_group' in value:
+                # fixme: trending_mixed is 0 for all records on variable decay, making sort slow.
+                continue
+            is_asc = value.startswith('^')
+            value = value[1:] if is_asc else value
+            value = REPLACEMENTS.get(value, value)
+            if value in TEXT_FIELDS:
+                value += '.keyword'
+            query['sort'].append({value: "asc" if is_asc else "desc"})
+    if collapse:
+        query["collapse"] = {
+            "field": collapse[0],
+            "inner_hits": {
+                "name": collapse[0],
+                "size": collapse[1],
+                "sort": query["sort"]
+            }
+        }
+    return query

lbry/wallet/server/db/elasticsearch/constants.py

@@ -0,0 +1,100 @@
+INDEX_DEFAULT_SETTINGS = {
+    "settings":
+        {"analysis":
+            {"analyzer": {
+                "default": {"tokenizer": "whitespace", "filter": ["lowercase", "porter_stem"]}}},
+            "index":
+                {"refresh_interval": -1,
+                 "number_of_shards": 1,
+                 "number_of_replicas": 0,
+                 "sort": {
+                     "field": ["trending_score", "release_time"],
+                     "order": ["desc", "desc"]
+                 }}
+        },
+    "mappings": {
+        "properties": {
+            "claim_id": {
+                "fields": {
+                    "keyword": {
+                        "ignore_above": 256,
+                        "type": "keyword"
+                    }
+                },
+                "type": "text",
+                "index_prefixes": {
+                    "min_chars": 1,
+                    "max_chars": 10
+                }
+            },
+            "sd_hash": {
+                "fields": {
+                    "keyword": {
+                        "ignore_above": 96,
+                        "type": "keyword"
+                    }
+                },
+                "type": "text",
+                "index_prefixes": {
+                    "min_chars": 1,
+                    "max_chars": 4
+                }
+            },
+            "height": {"type": "integer"},
+            "claim_type": {"type": "byte"},
+            "censor_type": {"type": "byte"},
+            "trending_score": {"type": "double"},
+            "release_time": {"type": "long"}
+        }
+    }
+}
+
+FIELDS = {
+    '_id',
+    'claim_id', 'claim_type', 'claim_name', 'normalized_name',
+    'tx_id', 'tx_nout', 'tx_position',
+    'short_url', 'canonical_url',
+    'is_controlling', 'last_take_over_height',
+    'public_key_bytes', 'public_key_id', 'claims_in_channel',
+    'channel_id', 'signature', 'signature_digest', 'is_signature_valid',
+    'amount', 'effective_amount', 'support_amount',
+    'fee_amount', 'fee_currency',
+    'height', 'creation_height', 'activation_height', 'expiration_height',
+    'stream_type', 'media_type', 'censor_type',
+    'title', 'author', 'description',
+    'timestamp', 'creation_timestamp',
+    'duration', 'release_time',
+    'tags', 'languages', 'has_source', 'reposted_claim_type',
+    'reposted_claim_id', 'repost_count', 'sd_hash',
+    'trending_score', 'tx_num'
+}
+
+TEXT_FIELDS = {'author', 'canonical_url', 'channel_id', 'description', 'claim_id', 'censoring_channel_id',
+               'media_type', 'normalized_name', 'public_key_bytes', 'public_key_id', 'short_url', 'signature',
+               'claim_name', 'signature_digest', 'title', 'tx_id', 'fee_currency', 'reposted_claim_id',
+               'tags', 'sd_hash'}
+
+RANGE_FIELDS = {
+    'height', 'creation_height', 'activation_height', 'expiration_height',
+    'timestamp', 'creation_timestamp', 'duration', 'release_time', 'fee_amount',
+    'tx_position', 'repost_count', 'limit_claims_per_channel',
+    'amount', 'effective_amount', 'support_amount',
+    'trending_score', 'censor_type', 'tx_num'
+}
+
+ALL_FIELDS = RANGE_FIELDS | TEXT_FIELDS | FIELDS
+
+REPLACEMENTS = {
+    'claim_name': 'normalized_name',
+    'name': 'normalized_name',
+    'txid': 'tx_id',
+    'nout': 'tx_nout',
+    'trending_group': 'trending_score',
+    'trending_mixed': 'trending_score',
+    'trending_global': 'trending_score',
+    'trending_local': 'trending_score',
+    'reposted': 'repost_count',
+    'stream_types': 'stream_type',
+    'media_types': 'media_type',
+    'valid_channel_signature': 'is_signature_valid'
+}

lbry/wallet/server/db/elasticsearch/fast_ar_trending.py

@@ -0,0 +1,117 @@
+FAST_AR_TRENDING_SCRIPT = """
+double softenLBC(double lbc) { return (Math.pow(lbc, 1.0 / 3.0)); }
+
+double logsumexp(double x, double y)
+{
+    double top;
+    if(x > y)
+        top = x;
+    else
+        top = y;
+    double result = top + Math.log(Math.exp(x-top) + Math.exp(y-top));
+    return(result);
+}
+
+double logdiffexp(double big, double small)
+{
+    return big + Math.log(1.0 - Math.exp(small - big));
+}
+
+double squash(double x)
+{
+    if(x < 0.0)
+return -Math.log(1.0 - x);
+    else
+return Math.log(x + 1.0);
+}
+
+double unsquash(double x)
+{
+    if(x < 0.0)
+        return 1.0 - Math.exp(-x);
+    else
+        return Math.exp(x) - 1.0;
+}
+
+double log_to_squash(double x)
+{
+    return logsumexp(x, 0.0);
+}
+
+double squash_to_log(double x)
+{
+    //assert x > 0.0;
+    return logdiffexp(x, 0.0);
+}
+
+double squashed_add(double x, double y)
+{
+    // squash(unsquash(x) + unsquash(y)) but avoiding overflow.
+    // Cases where the signs are the same
+    if (x < 0.0 && y < 0.0)
+        return -logsumexp(-x, logdiffexp(-y, 0.0));
+    if (x >= 0.0 && y >= 0.0)
+        return logsumexp(x, logdiffexp(y, 0.0));
+    // Where the signs differ
+    if (x >= 0.0 && y < 0.0)
+        if (Math.abs(x) >= Math.abs(y))
+            return logsumexp(0.0, logdiffexp(x, -y));
+        else
+            return -logsumexp(0.0, logdiffexp(-y, x));
+    if (x < 0.0 && y >= 0.0)
+    {
+        // Addition is commutative, hooray for new math
+        return squashed_add(y, x);
+    }
+    return 0.0;
+}
+
+double squashed_multiply(double x, double y)
+{
+    // squash(unsquash(x)*unsquash(y)) but avoiding overflow.
+    int sign;
+    if(x*y >= 0.0)
+sign = 1;
+    else
+sign = -1;
+    return sign*logsumexp(squash_to_log(Math.abs(x))
+    + squash_to_log(Math.abs(y)), 0.0);
+}
+
+// Squashed inflated units
+double inflateUnits(int height) {
+    double timescale = 576.0; // Half life of 400 = e-folding time of a day
+      // by coincidence, so may as well go with it
+    return log_to_squash(height / timescale);
+}
+
+double spikePower(double newAmount) {
+    if (newAmount < 50.0) {
+        return(0.5);
+    } else if (newAmount < 85.0) {
+        return(newAmount / 100.0);
+    } else {
+        return(0.85);
+    }
+}
+
+double spikeMass(double oldAmount, double newAmount) {
+    double softenedChange = softenLBC(Math.abs(newAmount - oldAmount));
+    double changeInSoftened = Math.abs(softenLBC(newAmount) - softenLBC(oldAmount));
+    double power = spikePower(newAmount);
+    if (oldAmount > newAmount) {
+        -1.0 * Math.pow(changeInSoftened, power) * Math.pow(softenedChange, 1.0 - power)
+    } else {
+        Math.pow(changeInSoftened, power) * Math.pow(softenedChange, 1.0 - power)
+    }
+}
+
+for (i in params.src.changes) {
+    double units = inflateUnits(i.height);
+    if (ctx._source.trending_score == null) {
+        ctx._source.trending_score = 0.0;
+    }
+    double bigSpike = squashed_multiply(units, squash(spikeMass(i.prev_amount, i.new_amount)));
+    ctx._source.trending_score = squashed_add(ctx._source.trending_score, bigSpike);
+}
+"""

lbry/wallet/server/db/elasticsearch/notifier.py

@@ -0,0 +1,55 @@
+import struct
+import typing
+import asyncio
+import logging
+
+
+log = logging.getLogger(__name__)
+
+
+class ElasticNotifierProtocol(asyncio.Protocol):
+    """notifies the reader when ES has written updates"""
+
+    def __init__(self, listeners):
+        self._listeners = listeners
+        self.transport: typing.Optional[asyncio.Transport] = None
+
+    def connection_made(self, transport):
+        self.transport = transport
+        self._listeners.append(self)
+        log.info("got es notifier connection")
+
+    def connection_lost(self, exc) -> None:
+        self._listeners.remove(self)
+        self.transport = None
+
+    def send_height(self, height: int, block_hash: bytes):
+        log.info("notify es update '%s'", height)
+        self.transport.write(struct.pack(b'>Q32s', height, block_hash))
+
+
+class ElasticNotifierClientProtocol(asyncio.Protocol):
+    """notifies the reader when ES has written updates"""
+
+    def __init__(self, notifications: asyncio.Queue):
+        self.notifications = notifications
+        self.transport: typing.Optional[asyncio.Transport] = None
+
+    def close(self):
+        if self.transport and not self.transport.is_closing():
+            self.transport.close()
+
+    def connection_made(self, transport):
+        self.transport = transport
+        log.info("connected to es notifier")
+
+    def connection_lost(self, exc) -> None:
+        self.transport = None
+
+    def data_received(self, data: bytes) -> None:
+        try:
+            height, block_hash = struct.unpack(b'>Q32s', data)
+        except:
+            log.exception("failed to decode %s", (data or b'').hex())
+            raise
+        self.notifications.put_nowait((height, block_hash))

lbry/wallet/server/db/elasticsearch/search.py

@@ -0,0 +1,726 @@
+import time
+import asyncio
+import struct
+from binascii import unhexlify
+from collections import Counter, deque
+from decimal import Decimal
+from operator import itemgetter
+from typing import Optional, List, Iterable, Union
+
+from elasticsearch import AsyncElasticsearch, NotFoundError, ConnectionError
+from elasticsearch.helpers import async_streaming_bulk
+from lbry.error import ResolveCensoredError, TooManyClaimSearchParametersError
+from lbry.schema.result import Outputs, Censor
+from lbry.schema.tags import clean_tags
+from lbry.schema.url import URL, normalize_name
+from lbry.utils import LRUCache
+from lbry.wallet.server.db.common import CLAIM_TYPES, STREAM_TYPES
+from lbry.wallet.server.db.elasticsearch.constants import INDEX_DEFAULT_SETTINGS, REPLACEMENTS, FIELDS, TEXT_FIELDS, \
+    RANGE_FIELDS, ALL_FIELDS
+from lbry.wallet.server.util import class_logger
+from lbry.wallet.server.db.common import ResolveResult
+
+
+class ChannelResolution(str):
+    @classmethod
+    def lookup_error(cls, url):
+        return LookupError(f'Could not find channel in "{url}".')
+
+
+class StreamResolution(str):
+    @classmethod
+    def lookup_error(cls, url):
+        return LookupError(f'Could not find claim at "{url}".')
+
+
+class IndexVersionMismatch(Exception):
+    def __init__(self, got_version, expected_version):
+        self.got_version = got_version
+        self.expected_version = expected_version
+
+
+class SearchIndex:
+    VERSION = 1
+
+    def __init__(self, index_prefix: str, search_timeout=3.0, elastic_host='localhost', elastic_port=9200):
+        self.search_timeout = search_timeout
+        self.sync_timeout = 600  # wont hit that 99% of the time, but can hit on a fresh import
+        self.search_client: Optional[AsyncElasticsearch] = None
+        self.sync_client: Optional[AsyncElasticsearch] = None
+        self.index = index_prefix + 'claims'
+        self.logger = class_logger(__name__, self.__class__.__name__)
+        self.claim_cache = LRUCache(2 ** 15)
+        self.search_cache = LRUCache(2 ** 17)
+        self._elastic_host = elastic_host
+        self._elastic_port = elastic_port
+
+    async def get_index_version(self) -> int:
+        try:
+            template = await self.sync_client.indices.get_template(self.index)
+            return template[self.index]['version']
+        except NotFoundError:
+            return 0
+
+    async def set_index_version(self, version):
+        await self.sync_client.indices.put_template(
+            self.index, body={'version': version, 'index_patterns': ['ignored']}, ignore=400
+        )
+
+    async def start(self) -> bool:
+        if self.sync_client:
+            return False
+        hosts = [{'host': self._elastic_host, 'port': self._elastic_port}]
+        self.sync_client = AsyncElasticsearch(hosts, timeout=self.sync_timeout)
+        self.search_client = AsyncElasticsearch(hosts, timeout=self.search_timeout)
+        while True:
+            try:
+                await self.sync_client.cluster.health(wait_for_status='yellow')
+                break
+            except ConnectionError:
+                self.logger.warning("Failed to connect to Elasticsearch. Waiting for it!")
+                await asyncio.sleep(1)
+
+        res = await self.sync_client.indices.create(self.index, INDEX_DEFAULT_SETTINGS, ignore=400)
+        acked = res.get('acknowledged', False)
+        if acked:
+            await self.set_index_version(self.VERSION)
+            return acked
+        index_version = await self.get_index_version()
+        if index_version != self.VERSION:
+            self.logger.error("es search index has an incompatible version: %s vs %s", index_version, self.VERSION)
+            raise IndexVersionMismatch(index_version, self.VERSION)
+        await self.sync_client.indices.refresh(self.index)
+        return acked
+
+    def stop(self):
+        clients = [self.sync_client, self.search_client]
+        self.sync_client, self.search_client = None, None
+        return asyncio.ensure_future(asyncio.gather(*(client.close() for client in clients)))
+
+    def delete_index(self):
+        return self.sync_client.indices.delete(self.index, ignore_unavailable=True)
+
+    async def _consume_claim_producer(self, claim_producer):
+        count = 0
+        async for op, doc in claim_producer:
+            if op == 'delete':
+                yield {
+                    '_index': self.index,
+                    '_op_type': 'delete',
+                    '_id': doc
+                }
+            else:
+                yield {
+                    'doc': {key: value for key, value in doc.items() if key in ALL_FIELDS},
+                    '_id': doc['claim_id'],
+                    '_index': self.index,
+                    '_op_type': 'update',
+                    'doc_as_upsert': True
+                }
+            count += 1
+            if count % 100 == 0:
+                self.logger.info("Indexing in progress, %d claims.", count)
+        if count:
+            self.logger.info("Indexing done for %d claims.", count)
+        else:
+            self.logger.debug("Indexing done for %d claims.", count)
+
+    async def claim_consumer(self, claim_producer):
+        touched = set()
+        async for ok, item in async_streaming_bulk(self.sync_client, self._consume_claim_producer(claim_producer),
+                                                   raise_on_error=False):
+            if not ok:
+                self.logger.warning("indexing failed for an item: %s", item)
+            else:
+                item = item.popitem()[1]
+                touched.add(item['_id'])
+        await self.sync_client.indices.refresh(self.index)
+        self.logger.debug("Indexing done.")
+
+    def update_filter_query(self, censor_type, blockdict, channels=False):
+        blockdict = {blocked.hex(): blocker.hex() for blocked, blocker in blockdict.items()}
+        if channels:
+            update = expand_query(channel_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
+        else:
+            update = expand_query(claim_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
+        key = 'channel_id' if channels else 'claim_id'
+        update['script'] = {
+            "source": f"ctx._source.censor_type={censor_type}; "
+                      f"ctx._source.censoring_channel_id=params[ctx._source.{key}];",
+            "lang": "painless",
+            "params": blockdict
+        }
+        return update
+
+    async def update_trending_score(self, params):
+        update_trending_score_script = """
+        double softenLBC(double lbc) { return (Math.pow(lbc, 1.0 / 3.0)); }
+
+        double logsumexp(double x, double y)
+        {
+            double top;
+            if(x > y)
+                top = x;
+            else
+                top = y;
+            double result = top + Math.log(Math.exp(x-top) + Math.exp(y-top));
+            return(result);
+        }
+
+        double logdiffexp(double big, double small)
+        {
+            return big + Math.log(1.0 - Math.exp(small - big));
+        }
+
+        double squash(double x)
+        {
+            if(x < 0.0)
+                return -Math.log(1.0 - x);
+            else
+                return Math.log(x + 1.0);
+        }
+
+        double unsquash(double x)
+        {
+            if(x < 0.0)
+                return 1.0 - Math.exp(-x);
+            else
+                return Math.exp(x) - 1.0;
+        }
+
+        double log_to_squash(double x)
+        {
+            return logsumexp(x, 0.0);
+        }
+
+        double squash_to_log(double x)
+        {
+            //assert x > 0.0;
+            return logdiffexp(x, 0.0);
+        }
+
+        double squashed_add(double x, double y)
+        {
+            // squash(unsquash(x) + unsquash(y)) but avoiding overflow.
+            // Cases where the signs are the same
+            if (x < 0.0 && y < 0.0)
+                return -logsumexp(-x, logdiffexp(-y, 0.0));
+            if (x >= 0.0 && y >= 0.0)
+                return logsumexp(x, logdiffexp(y, 0.0));
+            // Where the signs differ
+            if (x >= 0.0 && y < 0.0)
+                if (Math.abs(x) >= Math.abs(y))
+                    return logsumexp(0.0, logdiffexp(x, -y));
+                else
+                    return -logsumexp(0.0, logdiffexp(-y, x));
+            if (x < 0.0 && y >= 0.0)
+            {
+                // Addition is commutative, hooray for new math
+                return squashed_add(y, x);
+            }
+            return 0.0;
+        }
+
+        double squashed_multiply(double x, double y)
+        {
+            // squash(unsquash(x)*unsquash(y)) but avoiding overflow.
+            int sign;
+            if(x*y >= 0.0)
+                sign = 1;
+            else
+                sign = -1;
+            return sign*logsumexp(squash_to_log(Math.abs(x))
+                            + squash_to_log(Math.abs(y)), 0.0);
+        }
+
+        // Squashed inflated units
+        double inflateUnits(int height) {
+            double timescale = 576.0; // Half life of 400 = e-folding time of a day
+                                      // by coincidence, so may as well go with it
+            return log_to_squash(height / timescale);
+        }
+
+        double spikePower(double newAmount) {
+            if (newAmount < 50.0) {
+                return(0.5);
+            } else if (newAmount < 85.0) {
+                return(newAmount / 100.0);
+            } else {
+                return(0.85);
+            }
+        }
+
+        double spikeMass(double oldAmount, double newAmount) {
+            double softenedChange = softenLBC(Math.abs(newAmount - oldAmount));
+            double changeInSoftened = Math.abs(softenLBC(newAmount) - softenLBC(oldAmount));
+            double power = spikePower(newAmount);
+            if (oldAmount > newAmount) {
+                -1.0 * Math.pow(changeInSoftened, power) * Math.pow(softenedChange, 1.0 - power)
+            } else {
+                Math.pow(changeInSoftened, power) * Math.pow(softenedChange, 1.0 - power)
+            }
+        }
+        for (i in params.src.changes) {
+            double units = inflateUnits(i.height);
+            if (ctx._source.trending_score == null) {
+                ctx._source.trending_score = 0.0;
+            }
+            double bigSpike = squashed_multiply(units, squash(spikeMass(i.prev_amount, i.new_amount)));
+            ctx._source.trending_score = squashed_add(ctx._source.trending_score, bigSpike);
+        }
+        """
+        start = time.perf_counter()
+
+        def producer():
+            for claim_id, claim_updates in params.items():
+                yield {
+                    '_id': claim_id,
+                    '_index': self.index,
+                    '_op_type': 'update',
+                    'script': {
+                        'lang': 'painless',
+                        'source': update_trending_score_script,
+                        'params': {'src': {
+                            'changes': [
+                                {
+                                    'height': p.height,
+                                    'prev_amount': p.prev_amount / 1E8,
+                                    'new_amount': p.new_amount / 1E8,
+                                } for p in claim_updates
+                            ]
+                        }}
+                    },
+                }
+        if not params:
+            return
+        async for ok, item in async_streaming_bulk(self.sync_client, producer(), raise_on_error=False):
+            if not ok:
+                self.logger.warning("updating trending failed for an item: %s", item)
+        await self.sync_client.indices.refresh(self.index)
+        self.logger.info("updated trending scores in %ims", int((time.perf_counter() - start) * 1000))
+
+    async def apply_filters(self, blocked_streams, blocked_channels, filtered_streams, filtered_channels):
+        if filtered_streams:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_streams), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if filtered_channels:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_channels), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_channels, True), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if blocked_streams:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_streams), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if blocked_channels:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_channels), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_channels, True), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        self.clear_caches()
+
+    def clear_caches(self):
+        self.search_cache.clear()
+        self.claim_cache.clear()
+
+    async def cached_search(self, kwargs):
+        total_referenced = []
+        cache_item = ResultCacheItem.from_cache(str(kwargs), self.search_cache)
+        if cache_item.result is not None:
+            return cache_item.result
+        async with cache_item.lock:
+            if cache_item.result:
+                return cache_item.result
+            censor = Censor(Censor.SEARCH)
+            if kwargs.get('no_totals'):
+                response, offset, total = await self.search(**kwargs, censor_type=Censor.NOT_CENSORED)
+            else:
+                response, offset, total = await self.search(**kwargs)
+            censor.apply(response)
+            total_referenced.extend(response)
+
+            if censor.censored:
+                response, _, _ = await self.search(**kwargs, censor_type=Censor.NOT_CENSORED)
+                total_referenced.extend(response)
+            response = [
+                ResolveResult(
+                    name=r['claim_name'],
+                    normalized_name=r['normalized_name'],
+                    claim_hash=r['claim_hash'],
+                    tx_num=r['tx_num'],
+                    position=r['tx_nout'],
+                    tx_hash=r['tx_hash'],
+                    height=r['height'],
+                    amount=r['amount'],
+                    short_url=r['short_url'],
+                    is_controlling=r['is_controlling'],
+                    canonical_url=r['canonical_url'],
+                    creation_height=r['creation_height'],
+                    activation_height=r['activation_height'],
+                    expiration_height=r['expiration_height'],
+                    effective_amount=r['effective_amount'],
+                    support_amount=r['support_amount'],
+                    last_takeover_height=r['last_take_over_height'],
+                    claims_in_channel=r['claims_in_channel'],
+                    channel_hash=r['channel_hash'],
+                    reposted_claim_hash=r['reposted_claim_hash'],
+                    reposted=r['reposted'],
+                    signature_valid=r['signature_valid']
+                ) for r in response
+            ]
+            extra = [
+                ResolveResult(
+                    name=r['claim_name'],
+                    normalized_name=r['normalized_name'],
+                    claim_hash=r['claim_hash'],
+                    tx_num=r['tx_num'],
+                    position=r['tx_nout'],
+                    tx_hash=r['tx_hash'],
+                    height=r['height'],
+                    amount=r['amount'],
+                    short_url=r['short_url'],
+                    is_controlling=r['is_controlling'],
+                    canonical_url=r['canonical_url'],
+                    creation_height=r['creation_height'],
+                    activation_height=r['activation_height'],
+                    expiration_height=r['expiration_height'],
+                    effective_amount=r['effective_amount'],
+                    support_amount=r['support_amount'],
+                    last_takeover_height=r['last_take_over_height'],
+                    claims_in_channel=r['claims_in_channel'],
+                    channel_hash=r['channel_hash'],
+                    reposted_claim_hash=r['reposted_claim_hash'],
+                    reposted=r['reposted'],
+                    signature_valid=r['signature_valid']
+                ) for r in await self._get_referenced_rows(total_referenced)
+            ]
+            result = Outputs.to_base64(
+                response, extra, offset, total, censor
+            )
+            cache_item.result = result
+            return result
+
+    async def get_many(self, *claim_ids):
+        await self.populate_claim_cache(*claim_ids)
+        return filter(None, map(self.claim_cache.get, claim_ids))
+
+    async def populate_claim_cache(self, *claim_ids):
+        missing = [claim_id for claim_id in claim_ids if self.claim_cache.get(claim_id) is None]
+        if missing:
+            results = await self.search_client.mget(
+                index=self.index, body={"ids": missing}
+            )
+            for result in expand_result(filter(lambda doc: doc['found'], results["docs"])):
+                self.claim_cache.set(result['claim_id'], result)
+
+
+    async def search(self, **kwargs):
+        try:
+            return await self.search_ahead(**kwargs)
+        except NotFoundError:
+            return [], 0, 0
+        # return expand_result(result['hits']), 0, result.get('total', {}).get('value', 0)
+
+    async def search_ahead(self, **kwargs):
+        # 'limit_claims_per_channel' case. Fetch 1000 results, reorder, slice, inflate and return
+        per_channel_per_page = kwargs.pop('limit_claims_per_channel', 0) or 0
+        remove_duplicates = kwargs.pop('remove_duplicates', False)
+        page_size = kwargs.pop('limit', 10)
+        offset = kwargs.pop('offset', 0)
+        kwargs['limit'] = 1000
+        cache_item = ResultCacheItem.from_cache(f"ahead{per_channel_per_page}{kwargs}", self.search_cache)
+        if cache_item.result is not None:
+            reordered_hits = cache_item.result
+        else:
+            async with cache_item.lock:
+                if cache_item.result:
+                    reordered_hits = cache_item.result
+                else:
+                    query = expand_query(**kwargs)
+                    search_hits = deque((await self.search_client.search(
+                        query, index=self.index, track_total_hits=False,
+                        _source_includes=['_id', 'channel_id', 'reposted_claim_id', 'creation_height']
+                    ))['hits']['hits'])
+                    if remove_duplicates:
+                        search_hits = self.__remove_duplicates(search_hits)
+                    if per_channel_per_page > 0:
+                        reordered_hits = self.__search_ahead(search_hits, page_size, per_channel_per_page)
+                    else:
+                        reordered_hits = [(hit['_id'], hit['_source']['channel_id']) for hit in search_hits]
+                    cache_item.result = reordered_hits
+        result = list(await self.get_many(*(claim_id for claim_id, _ in reordered_hits[offset:(offset + page_size)])))
+        return result, 0, len(reordered_hits)
+
+    def __remove_duplicates(self, search_hits: deque) -> deque:
+        known_ids = {}  # claim_id -> (creation_height, hit_id), where hit_id is either reposted claim id or original
+        dropped = set()
+        for hit in search_hits:
+            hit_height, hit_id = hit['_source']['creation_height'], hit['_source']['reposted_claim_id'] or hit['_id']
+            if hit_id not in known_ids:
+                known_ids[hit_id] = (hit_height, hit['_id'])
+            else:
+                previous_height, previous_id = known_ids[hit_id]
+                if hit_height < previous_height:
+                    known_ids[hit_id] = (hit_height, hit['_id'])
+                    dropped.add(previous_id)
+                else:
+                    dropped.add(hit['_id'])
+        return deque(hit for hit in search_hits if hit['_id'] not in dropped)
+
+    def __search_ahead(self, search_hits: list, page_size: int, per_channel_per_page: int):
+        reordered_hits = []
+        channel_counters = Counter()
+        next_page_hits_maybe_check_later = deque()
+        while search_hits or next_page_hits_maybe_check_later:
+            if reordered_hits and len(reordered_hits) % page_size == 0:
+                channel_counters.clear()
+            elif not reordered_hits:
+                pass
+            else:
+                break  # means last page was incomplete and we are left with bad replacements
+            for _ in range(len(next_page_hits_maybe_check_later)):
+                claim_id, channel_id = next_page_hits_maybe_check_later.popleft()
+                if per_channel_per_page > 0 and channel_counters[channel_id] < per_channel_per_page:
+                    reordered_hits.append((claim_id, channel_id))
+                    channel_counters[channel_id] += 1
+                else:
+                    next_page_hits_maybe_check_later.append((claim_id, channel_id))
+            while search_hits:
+                hit = search_hits.popleft()
+                hit_id, hit_channel_id = hit['_id'], hit['_source']['channel_id']
+                if hit_channel_id is None or per_channel_per_page <= 0:
+                    reordered_hits.append((hit_id, hit_channel_id))
+                elif channel_counters[hit_channel_id] < per_channel_per_page:
+                    reordered_hits.append((hit_id, hit_channel_id))
+                    channel_counters[hit_channel_id] += 1
+                    if len(reordered_hits) % page_size == 0:
+                        break
+                else:
+                    next_page_hits_maybe_check_later.append((hit_id, hit_channel_id))
+        return reordered_hits
+
+    async def _get_referenced_rows(self, txo_rows: List[dict]):
+        txo_rows = [row for row in txo_rows if isinstance(row, dict)]
+        referenced_ids = set(filter(None, map(itemgetter('reposted_claim_id'), txo_rows)))
+        referenced_ids |= set(filter(None, (row['channel_id'] for row in txo_rows)))
+        referenced_ids |= set(filter(None, (row['censoring_channel_id'] for row in txo_rows)))
+
+        referenced_txos = []
+        if referenced_ids:
+            referenced_txos.extend(await self.get_many(*referenced_ids))
+            referenced_ids = set(filter(None, (row['channel_id'] for row in referenced_txos)))
+
+        if referenced_ids:
+            referenced_txos.extend(await self.get_many(*referenced_ids))
+
+        return referenced_txos
+
+
+def expand_query(**kwargs):
+    if "amount_order" in kwargs:
+        kwargs["limit"] = 1
+        kwargs["order_by"] = "effective_amount"
+        kwargs["offset"] = int(kwargs["amount_order"]) - 1
+    if 'name' in kwargs:
+        kwargs['name'] = normalize_name(kwargs.pop('name'))
+    if kwargs.get('is_controlling') is False:
+        kwargs.pop('is_controlling')
+    query = {'must': [], 'must_not': []}
+    collapse = None
+    if 'fee_currency' in kwargs and kwargs['fee_currency'] is not None:
+        kwargs['fee_currency'] = kwargs['fee_currency'].upper()
+    for key, value in kwargs.items():
+        key = key.replace('claim.', '')
+        many = key.endswith('__in') or isinstance(value, list)
+        if many and len(value) > 2048:
+            raise TooManyClaimSearchParametersError(key, 2048)
+        if many:
+            key = key.replace('__in', '')
+            value = list(filter(None, value))
+        if value is None or isinstance(value, list) and len(value) == 0:
+            continue
+        key = REPLACEMENTS.get(key, key)
+        if key in FIELDS:
+            partial_id = False
+            if key == 'claim_type':
+                if isinstance(value, str):
+                    value = CLAIM_TYPES[value]
+                else:
+                    value = [CLAIM_TYPES[claim_type] for claim_type in value]
+            elif key == 'stream_type':
+                value = [STREAM_TYPES[value]] if isinstance(value, str) else list(map(STREAM_TYPES.get, value))
+            if key == '_id':
+                if isinstance(value, Iterable):
+                    value = [item[::-1].hex() for item in value]
+                else:
+                    value = value[::-1].hex()
+            if not many and key in ('_id', 'claim_id', 'sd_hash') and len(value) < 20:
+                partial_id = True
+            if key in ('signature_valid', 'has_source'):
+                continue  # handled later
+            if key in TEXT_FIELDS:
+                key += '.keyword'
+            ops = {'<=': 'lte', '>=': 'gte', '<': 'lt', '>': 'gt'}
+            if partial_id:
+                query['must'].append({"prefix": {key: value}})
+            elif key in RANGE_FIELDS and isinstance(value, str) and value[0] in ops:
+                operator_length = 2 if value[:2] in ops else 1
+                operator, value = value[:operator_length], value[operator_length:]
+                if key == 'fee_amount':
+                    value = str(Decimal(value)*1000)
+                query['must'].append({"range": {key: {ops[operator]: value}}})
+            elif key in RANGE_FIELDS and isinstance(value, list) and all(v[0] in ops for v in value):
+                range_constraints = []
+                for v in value:
+                    operator_length = 2 if v[:2] in ops else 1
+                    operator, stripped_op_v = v[:operator_length], v[operator_length:]
+                    if key == 'fee_amount':
+                        stripped_op_v = str(Decimal(stripped_op_v)*1000)
+                    range_constraints.append((operator, stripped_op_v))
+                query['must'].append({"range": {key: {ops[operator]: v for operator, v in range_constraints}}})
+            elif many:
+                query['must'].append({"terms": {key: value}})
+            else:
+                if key == 'fee_amount':
+                    value = str(Decimal(value)*1000)
+                query['must'].append({"term": {key: {"value": value}}})
+        elif key == 'not_channel_ids':
+            for channel_id in value:
+                query['must_not'].append({"term": {'channel_id.keyword': channel_id}})
+                query['must_not'].append({"term": {'_id': channel_id}})
+        elif key == 'channel_ids':
+            query['must'].append({"terms": {'channel_id.keyword': value}})
+        elif key == 'claim_ids':
+            query['must'].append({"terms": {'claim_id.keyword': value}})
+        elif key == 'media_types':
+            query['must'].append({"terms": {'media_type.keyword': value}})
+        elif key == 'any_languages':
+            query['must'].append({"terms": {'languages': clean_tags(value)}})
+        elif key == 'any_languages':
+            query['must'].append({"terms": {'languages': value}})
+        elif key == 'all_languages':
+            query['must'].extend([{"term": {'languages': tag}} for tag in value])
+        elif key == 'any_tags':
+            query['must'].append({"terms": {'tags.keyword': clean_tags(value)}})
+        elif key == 'all_tags':
+            query['must'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
+        elif key == 'not_tags':
+            query['must_not'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
+        elif key == 'not_claim_id':
+            query['must_not'].extend([{"term": {'claim_id.keyword': cid}} for cid in value])
+        elif key == 'limit_claims_per_channel':
+            collapse = ('channel_id.keyword', value)
+    if kwargs.get('has_channel_signature'):
+        query['must'].append({"exists": {"field": "signature"}})
+        if 'signature_valid' in kwargs:
+            query['must'].append({"term": {"is_signature_valid": bool(kwargs["signature_valid"])}})
+    elif 'signature_valid' in kwargs:
+        query.setdefault('should', [])
+        query["minimum_should_match"] = 1
+        query['should'].append({"bool": {"must_not": {"exists": {"field": "signature"}}}})
+        query['should'].append({"term": {"is_signature_valid": bool(kwargs["signature_valid"])}})
+    if 'has_source' in kwargs:
+        query.setdefault('should', [])
+        query["minimum_should_match"] = 1
+        is_stream_or_repost = {"terms": {"claim_type": [CLAIM_TYPES['stream'], CLAIM_TYPES['repost']]}}
+        query['should'].append(
+            {"bool": {"must": [{"match": {"has_source": kwargs['has_source']}}, is_stream_or_repost]}})
+        query['should'].append({"bool": {"must_not": [is_stream_or_repost]}})
+        query['should'].append({"bool": {"must": [{"term": {"reposted_claim_type": CLAIM_TYPES['channel']}}]}})
+    if kwargs.get('text'):
+        query['must'].append(
+                    {"simple_query_string":
+                         {"query": kwargs["text"], "fields": [
+                             "claim_name^4", "channel_name^8", "title^1", "description^.5", "author^1", "tags^.5"
+                         ]}})
+    query = {
+        "_source": {"excludes": ["description", "title"]},
+        'query': {'bool': query},
+        "sort": [],
+    }
+    if "limit" in kwargs:
+        query["size"] = kwargs["limit"]
+    if 'offset' in kwargs:
+        query["from"] = kwargs["offset"]
+    if 'order_by' in kwargs:
+        if isinstance(kwargs["order_by"], str):
+            kwargs["order_by"] = [kwargs["order_by"]]
+        for value in kwargs['order_by']:
+            if 'trending_group' in value:
+                # fixme: trending_mixed is 0 for all records on variable decay, making sort slow.
+                continue
+            is_asc = value.startswith('^')
+            value = value[1:] if is_asc else value
+            value = REPLACEMENTS.get(value, value)
+            if value in TEXT_FIELDS:
+                value += '.keyword'
+            query['sort'].append({value: "asc" if is_asc else "desc"})
+    if collapse:
+        query["collapse"] = {
+            "field": collapse[0],
+            "inner_hits": {
+                "name": collapse[0],
+                "size": collapse[1],
+                "sort": query["sort"]
+            }
+        }
+    return query
+
+
+def expand_result(results):
+    inner_hits = []
+    expanded = []
+    for result in results:
+        if result.get("inner_hits"):
+            for _, inner_hit in result["inner_hits"].items():
+                inner_hits.extend(inner_hit["hits"]["hits"])
+            continue
+        result = result['_source']
+        result['claim_hash'] = unhexlify(result['claim_id'])[::-1]
+        if result['reposted_claim_id']:
+            result['reposted_claim_hash'] = unhexlify(result['reposted_claim_id'])[::-1]
+        else:
+            result['reposted_claim_hash'] = None
+        result['channel_hash'] = unhexlify(result['channel_id'])[::-1] if result['channel_id'] else None
+        result['txo_hash'] = unhexlify(result['tx_id'])[::-1] + struct.pack('<I', result['tx_nout'])
+        result['tx_hash'] = unhexlify(result['tx_id'])[::-1]
+        result['reposted'] = result.pop('repost_count')
+        result['signature_valid'] = result.pop('is_signature_valid')
+        # result['normalized'] = result.pop('normalized_name')
+        # if result['censoring_channel_hash']:
+        #     result['censoring_channel_hash'] = unhexlify(result['censoring_channel_hash'])[::-1]
+        expanded.append(result)
+    if inner_hits:
+        return expand_result(inner_hits)
+    return expanded
+
+
+class ResultCacheItem:
+    __slots__ = '_result', 'lock', 'has_result'
+
+    def __init__(self):
+        self.has_result = asyncio.Event()
+        self.lock = asyncio.Lock()
+        self._result = None
+
+    @property
+    def result(self) -> str:
+        return self._result
+
+    @result.setter
+    def result(self, result: str):
+        self._result = result
+        if result is not None:
+            self.has_result.set()
+
+    @classmethod
+    def from_cache(cls, cache_key, cache):
+        cache_item = cache.get(cache_key)
+        if cache_item is None:
+            cache_item = cache[cache_key] = ResultCacheItem()
+        return cache_item

lbry/wallet/server/db/elasticsearch/sync.py

@@ -0,0 +1,319 @@
+import os
+import time
+import signal
+import json
+import typing
+from collections import defaultdict
+import asyncio
+import logging
+from elasticsearch import AsyncElasticsearch, NotFoundError
+from elasticsearch.helpers import async_streaming_bulk
+
+from lbry.schema.result import Censor
+from lbry.wallet.server.db.elasticsearch.search import IndexVersionMismatch
+from lbry.wallet.server.db.elasticsearch.constants import ALL_FIELDS, INDEX_DEFAULT_SETTINGS
+from lbry.wallet.server.db.elasticsearch.common import expand_query
+from lbry.wallet.server.db.elasticsearch.notifier import ElasticNotifierProtocol
+from lbry.wallet.server.db.elasticsearch.fast_ar_trending import FAST_AR_TRENDING_SCRIPT
+from lbry.wallet.server.chain_reader import BlockchainReader
+from lbry.wallet.server.db.revertable import RevertableOp
+from lbry.wallet.server.db import DB_PREFIXES
+
+
+log = logging.getLogger()
+
+
+class ElasticWriter(BlockchainReader):
+    VERSION = 1
+
+    def __init__(self, env):
+        super().__init__(env, 'lbry-elastic-writer', thread_workers=1, thread_prefix='lbry-elastic-writer')
+        # self._refresh_interval = 0.1
+        self._task = None
+        self.index = self.env.es_index_prefix + 'claims'
+        self._elastic_host = env.elastic_host
+        self._elastic_port = env.elastic_port
+        self.sync_timeout = 1800
+        self.sync_client = AsyncElasticsearch(
+            [{'host': self._elastic_host, 'port': self._elastic_port}], timeout=self.sync_timeout
+        )
+        self._es_info_path = os.path.join(env.db_dir, 'es_info')
+        self._last_wrote_height = 0
+        self._last_wrote_block_hash = None
+
+        self._touched_claims = set()
+        self._deleted_claims = set()
+
+        self._removed_during_undo = set()
+
+        self._trending = defaultdict(list)
+        self._advanced = True
+        self.synchronized = asyncio.Event()
+        self._listeners: typing.List[ElasticNotifierProtocol] = []
+
+    async def run_es_notifier(self, synchronized: asyncio.Event):
+        server = await asyncio.get_event_loop().create_server(
+            lambda: ElasticNotifierProtocol(self._listeners), '127.0.0.1', self.env.elastic_notifier_port
+        )
+        self.log.info("ES notifier server listening on TCP localhost:%i", self.env.elastic_notifier_port)
+        synchronized.set()
+        async with server:
+            await server.serve_forever()
+
+    def notify_es_notification_listeners(self, height: int, block_hash: bytes):
+        for p in self._listeners:
+            p.send_height(height, block_hash)
+            self.log.info("notify listener %i", height)
+
+    def _read_es_height(self):
+        with open(self._es_info_path, 'r') as f:
+            info = json.loads(f.read())
+        self._last_wrote_height = int(info.get('height', 0))
+        self._last_wrote_block_hash = info.get('block_hash', None)
+
+    async def read_es_height(self):
+        await asyncio.get_event_loop().run_in_executor(self._executor, self._read_es_height)
+
+    def write_es_height(self, height: int, block_hash: str):
+        with open(self._es_info_path, 'w') as f:
+            f.write(json.dumps({'height': height, 'block_hash': block_hash}, indent=2))
+        self._last_wrote_height = height
+        self._last_wrote_block_hash = block_hash
+
+    async def get_index_version(self) -> int:
+        try:
+            template = await self.sync_client.indices.get_template(self.index)
+            return template[self.index]['version']
+        except NotFoundError:
+            return 0
+
+    async def set_index_version(self, version):
+        await self.sync_client.indices.put_template(
+            self.index, body={'version': version, 'index_patterns': ['ignored']}, ignore=400
+        )
+
+    async def start_index(self) -> bool:
+        if self.sync_client:
+            return False
+        hosts = [{'host': self._elastic_host, 'port': self._elastic_port}]
+        self.sync_client = AsyncElasticsearch(hosts, timeout=self.sync_timeout)
+        while True:
+            try:
+                await self.sync_client.cluster.health(wait_for_status='yellow')
+                break
+            except ConnectionError:
+                self.log.warning("Failed to connect to Elasticsearch. Waiting for it!")
+                await asyncio.sleep(1)
+
+        res = await self.sync_client.indices.create(self.index, INDEX_DEFAULT_SETTINGS, ignore=400)
+        acked = res.get('acknowledged', False)
+        if acked:
+            await self.set_index_version(self.VERSION)
+            return acked
+        index_version = await self.get_index_version()
+        if index_version != self.VERSION:
+            self.log.error("es search index has an incompatible version: %s vs %s", index_version, self.VERSION)
+            raise IndexVersionMismatch(index_version, self.VERSION)
+        await self.sync_client.indices.refresh(self.index)
+        return acked
+
+    async def stop_index(self):
+        if self.sync_client:
+            await self.sync_client.close()
+        self.sync_client = None
+
+    async def delete_index(self):
+        if self.sync_client:
+            return await self.sync_client.indices.delete(self.index, ignore_unavailable=True)
+
+    def update_filter_query(self, censor_type, blockdict, channels=False):
+        blockdict = {blocked.hex(): blocker.hex() for blocked, blocker in blockdict.items()}
+        if channels:
+            update = expand_query(channel_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
+        else:
+            update = expand_query(claim_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
+        key = 'channel_id' if channels else 'claim_id'
+        update['script'] = {
+            "source": f"ctx._source.censor_type={censor_type}; "
+                      f"ctx._source.censoring_channel_id=params[ctx._source.{key}];",
+            "lang": "painless",
+            "params": blockdict
+        }
+        return update
+
+    async def apply_filters(self, blocked_streams, blocked_channels, filtered_streams, filtered_channels):
+        if filtered_streams:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_streams), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if filtered_channels:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_channels), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.SEARCH, filtered_channels, True), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if blocked_streams:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_streams), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+        if blocked_channels:
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_channels), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+            await self.sync_client.update_by_query(
+                self.index, body=self.update_filter_query(Censor.RESOLVE, blocked_channels, True), slices=4)
+            await self.sync_client.indices.refresh(self.index)
+
+    async def _claim_producer(self):
+        for deleted in self._deleted_claims:
+            yield {
+                '_index': self.index,
+                '_op_type': 'delete',
+                '_id': deleted.hex()
+            }
+        for touched in self._touched_claims:
+            claim = self.db.claim_producer(touched)
+            if claim:
+                yield {
+                    'doc': {key: value for key, value in claim.items() if key in ALL_FIELDS},
+                    '_id': claim['claim_id'],
+                    '_index': self.index,
+                    '_op_type': 'update',
+                    'doc_as_upsert': True
+                }
+        for claim_hash, notifications in self._trending.items():
+            yield {
+                '_id': claim_hash.hex(),
+                '_index': self.index,
+                '_op_type': 'update',
+                'script': {
+                    'lang': 'painless',
+                    'source': FAST_AR_TRENDING_SCRIPT,
+                    'params': {'src': {
+                        'changes': [
+                            {
+                                'height': notify_height,
+                                'prev_amount': trending_v.previous_amount / 1E8,
+                                'new_amount': trending_v.new_amount / 1E8,
+                            } for (notify_height, trending_v) in notifications
+                        ]
+                    }}
+                },
+            }
+
+    def advance(self, height: int):
+        super().advance(height)
+
+        touched_or_deleted = self.db.prefix_db.touched_or_deleted.get(height)
+        for k, v in self.db.prefix_db.trending_notification.iterate((height,)):
+            self._trending[k.claim_hash].append((k.height, v))
+        if touched_or_deleted:
+            readded_after_reorg = self._removed_during_undo.intersection(touched_or_deleted.touched_claims)
+            self._deleted_claims.difference_update(readded_after_reorg)
+            self._touched_claims.update(touched_or_deleted.touched_claims)
+            self._deleted_claims.update(touched_or_deleted.deleted_claims)
+            self._touched_claims.difference_update(self._deleted_claims)
+            for to_del in touched_or_deleted.deleted_claims:
+                if to_del in self._trending:
+                    self._trending.pop(to_del)
+        self.log.info("advanced to %i, %i touched %i to delete (%i %i)", height, len(touched_or_deleted.touched_claims), len(touched_or_deleted.deleted_claims),
+                         len(self._touched_claims), len(self._deleted_claims))
+        self._advanced = True
+
+    def unwind(self):
+        self.db.tx_counts.pop()
+        reverted_block_hash = self.db.coin.header_hash(self.db.headers.pop())
+        packed = self.db.prefix_db.undo.get(len(self.db.tx_counts), reverted_block_hash)
+        touched_or_deleted = None
+        claims_to_delete = []
+        # find and apply the touched_or_deleted items in the undos for the reverted blocks
+        assert packed, f'missing undo information for block {len(self.db.tx_counts)}'
+        while packed:
+            op, packed = RevertableOp.unpack(packed)
+            if op.is_delete and op.key.startswith(DB_PREFIXES.touched_or_deleted.value):
+                assert touched_or_deleted is None, 'only should have one match'
+                touched_or_deleted = self.db.prefix_db.touched_or_deleted.unpack_value(op.value)
+            elif op.is_delete and op.key.startswith(DB_PREFIXES.claim_to_txo.value):
+                v = self.db.prefix_db.claim_to_txo.unpack_value(op.value)
+                if v.root_tx_num == v.tx_num and v.root_tx_num > self.db.tx_counts[-1]:
+                    claims_to_delete.append(self.db.prefix_db.claim_to_txo.unpack_key(op.key).claim_hash)
+        if touched_or_deleted:
+            self._touched_claims.update(set(touched_or_deleted.deleted_claims).union(
+                touched_or_deleted.touched_claims.difference(set(claims_to_delete))))
+            self._deleted_claims.update(claims_to_delete)
+            self._removed_during_undo.update(claims_to_delete)
+        self._advanced = True
+        self.log.warning("delete %i claim and upsert %i from reorg", len(self._deleted_claims), len(self._touched_claims))
+
+    async def poll_for_changes(self):
+        await super().poll_for_changes()
+        cnt = 0
+        success = 0
+        if self._advanced:
+            if self._touched_claims or self._deleted_claims or self._trending:
+                async for ok, item in async_streaming_bulk(
+                        self.sync_client, self._claim_producer(),
+                        raise_on_error=False):
+                    cnt += 1
+                    if not ok:
+                        self.log.warning("indexing failed for an item: %s", item)
+                    else:
+                        success += 1
+                await self.sync_client.indices.refresh(self.index)
+            self.write_es_height(self.db.db_height, self.db.db_tip[::-1].hex())
+            self.log.info("Indexing block %i done. %i/%i successful", self._last_wrote_height, success, cnt)
+            self._touched_claims.clear()
+            self._deleted_claims.clear()
+            self._removed_during_undo.clear()
+            self._trending.clear()
+            self._advanced = False
+            self.synchronized.set()
+            self.notify_es_notification_listeners(self._last_wrote_height, self.db.db_tip)
+
+    @property
+    def last_synced_height(self) -> int:
+        return self._last_wrote_height
+
+    async def start(self):
+        await super().start()
+
+        def _start_cancellable(run, *args):
+            _flag = asyncio.Event()
+            self.cancellable_tasks.append(asyncio.ensure_future(run(*args, _flag)))
+            return _flag.wait()
+
+        self.db.open_db()
+        await self.db.initialize_caches()
+        await self.start_index()
+        self.last_state = self.db.read_db_state()
+
+        await _start_cancellable(self.run_es_notifier)
+        await _start_cancellable(self.refresh_blocks_forever)
+
+    async def stop(self, delete_index=False):
+        async with self._lock:
+            while self.cancellable_tasks:
+                t = self.cancellable_tasks.pop()
+                if not t.done():
+                    t.cancel()
+        if delete_index:
+            await self.delete_index()
+        await self.stop_index()
+        self._executor.shutdown(wait=True)
+        self._executor = None
+
+    def run(self):
+        loop = asyncio.get_event_loop()
+
+        def __exit():
+            raise SystemExit()
+        try:
+            loop.add_signal_handler(signal.SIGINT, __exit)
+            loop.add_signal_handler(signal.SIGTERM, __exit)
+            loop.run_until_complete(self.start())
+            loop.run_until_complete(self.shutdown_event.wait())
+        except (SystemExit, KeyboardInterrupt):
+            pass
+        finally:
+            loop.run_until_complete(self.stop())

lbry/wallet/server/db/interface.py

@@ -0,0 +1,144 @@
+import struct
+import typing
+import os
+
+import rocksdb
+from typing import Optional
+from lbry.wallet.server.db import DB_PREFIXES
+from lbry.wallet.server.db.revertable import RevertableOpStack, RevertablePut, RevertableDelete
+
+
+class PrefixDB:
+    """
+    Base class for a revertable rocksdb database (a rocksdb db where each set of applied changes can be undone)
+    """
+    UNDO_KEY_STRUCT = struct.Struct(b'>Q32s')
+    PARTIAL_UNDO_KEY_STRUCT = struct.Struct(b'>Q')
+
+    def __init__(self, path, max_open_files=64, secondary_path='', max_undo_depth: int = 200, unsafe_prefixes=None):
+        db_exists = os.path.exists(path)
+        column_family_options = {
+                prefix.value: rocksdb.ColumnFamilyOptions() for prefix in DB_PREFIXES
+        } if secondary_path or db_exists else {}
+        self.column_families: typing.Dict[bytes, 'rocksdb.ColumnFamilyHandle'] = {}
+        options = rocksdb.Options(
+                create_if_missing=True, use_fsync=True, target_file_size_base=33554432,
+                max_open_files=max_open_files if not secondary_path else -1
+            )
+        self._db = rocksdb.DB(
+            path, options, secondary_name='', column_families=column_family_options
+        )
+        for prefix in DB_PREFIXES:
+            cf = self._db.get_column_family(prefix.value)
+            if cf is None and not secondary_path:
+                self._db.create_column_family(prefix.value, rocksdb.ColumnFamilyOptions())
+                cf = self._db.get_column_family(prefix.value)
+            self.column_families[prefix.value] = cf
+
+        self._op_stack = RevertableOpStack(self.get, unsafe_prefixes=unsafe_prefixes)
+        self._max_undo_depth = max_undo_depth
+
+    def unsafe_commit(self):
+        """
+        Write staged changes to the database without keeping undo information
+        Changes written cannot be undone
+        """
+        try:
+            if not len(self._op_stack):
+                return
+            with self._db.write_batch(sync=True) as batch:
+                batch_put = batch.put
+                batch_delete = batch.delete
+                get_column_family = self.column_families.__getitem__
+                for staged_change in self._op_stack:
+                    column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
+                    if staged_change.is_put:
+                        batch_put((column_family, staged_change.key), staged_change.value)
+                    else:
+                        batch_delete((column_family, staged_change.key))
+        finally:
+            self._op_stack.clear()
+
+    def commit(self, height: int, block_hash: bytes):
+        """
+        Write changes for a block height to the database and keep undo information so that the changes can be reverted
+        """
+        undo_ops = self._op_stack.get_undo_ops()
+        delete_undos = []
+        if height > self._max_undo_depth:
+            delete_undos.extend(self._db.iterator(
+                start=DB_PREFIXES.undo.value + self.PARTIAL_UNDO_KEY_STRUCT.pack(0),
+                iterate_upper_bound=DB_PREFIXES.undo.value + self.PARTIAL_UNDO_KEY_STRUCT.pack(height - self._max_undo_depth),
+                include_value=False
+            ))
+        try:
+            undo_c_f = self.column_families[DB_PREFIXES.undo.value]
+            with self._db.write_batch(sync=True) as batch:
+                batch_put = batch.put
+                batch_delete = batch.delete
+                get_column_family = self.column_families.__getitem__
+                for staged_change in self._op_stack:
+                    column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
+                    if staged_change.is_put:
+                        batch_put((column_family, staged_change.key), staged_change.value)
+                    else:
+                        batch_delete((column_family, staged_change.key))
+                for undo_to_delete in delete_undos:
+                    batch_delete((undo_c_f, undo_to_delete))
+                batch_put((undo_c_f, DB_PREFIXES.undo.value + self.UNDO_KEY_STRUCT.pack(height, block_hash)), undo_ops)
+        finally:
+            self._op_stack.clear()
+
+    def rollback(self, height: int, block_hash: bytes):
+        """
+        Revert changes for a block height
+        """
+        undo_key = DB_PREFIXES.undo.value + self.UNDO_KEY_STRUCT.pack(height, block_hash)
+        undo_c_f = self.column_families[DB_PREFIXES.undo.value]
+        undo_info = self._db.get((undo_c_f, undo_key))
+        self._op_stack.apply_packed_undo_ops(undo_info)
+        try:
+            with self._db.write_batch(sync=True) as batch:
+                batch_put = batch.put
+                batch_delete = batch.delete
+                get_column_family = self.column_families.__getitem__
+                for staged_change in self._op_stack:
+                    column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
+                    if staged_change.is_put:
+                        batch_put((column_family, staged_change.key), staged_change.value)
+                    else:
+                        batch_delete((column_family, staged_change.key))
+                # batch_delete(undo_key)
+        finally:
+            self._op_stack.clear()
+
+    def get(self, key: bytes, fill_cache: bool = True) -> Optional[bytes]:
+        cf = self.column_families[key[:1]]
+        return self._db.get((cf, key), fill_cache=fill_cache)
+
+    def iterator(self, start: bytes, column_family: 'rocksdb.ColumnFamilyHandle' = None,
+                 iterate_lower_bound: bytes = None, iterate_upper_bound: bytes = None,
+                 reverse: bool = False, include_key: bool = True, include_value: bool = True,
+                 fill_cache: bool = True, prefix_same_as_start: bool = False, auto_prefix_mode: bool = False):
+        return self._db.iterator(
+            start=start, column_family=column_family, iterate_lower_bound=iterate_lower_bound,
+            iterate_upper_bound=iterate_upper_bound, reverse=reverse, include_key=include_key,
+            include_value=include_value, fill_cache=fill_cache, prefix_same_as_start=prefix_same_as_start,
+            auto_prefix_mode=auto_prefix_mode
+        )
+
+    def close(self):
+        self._db.close()
+
+    def try_catch_up_with_primary(self):
+        self._db.try_catch_up_with_primary()
+
+    @property
+    def closed(self) -> bool:
+        return self._db.is_closed
+
+    def stage_raw_put(self, key: bytes, value: bytes):
+        self._op_stack.append_op(RevertablePut(key, value))
+
+    def stage_raw_delete(self, key: bytes, value: bytes):
+        self._op_stack.append_op(RevertableDelete(key, value))

lbry/wallet/server/db/revertable.py

@@ -0,0 +1,175 @@
+import struct
+import logging
+from string import printable
+from collections import defaultdict
+from typing import Tuple, Iterable, Callable, Optional
+from lbry.wallet.server.db import DB_PREFIXES
+
+_OP_STRUCT = struct.Struct('>BLL')
+log = logging.getLogger()
+
+
+class RevertableOp:
+    __slots__ = [
+        'key',
+        'value',
+    ]
+    is_put = 0
+
+    def __init__(self, key: bytes, value: bytes):
+        self.key = key
+        self.value = value
+
+    @property
+    def is_delete(self) -> bool:
+        return not self.is_put
+
+    def invert(self) -> 'RevertableOp':
+        raise NotImplementedError()
+
+    def pack(self) -> bytes:
+        """
+        Serialize to bytes
+        """
+        return struct.pack(
+            f'>BLL{len(self.key)}s{len(self.value)}s', int(self.is_put), len(self.key), len(self.value), self.key,
+            self.value
+        )
+
+    @classmethod
+    def unpack(cls, packed: bytes) -> Tuple['RevertableOp', bytes]:
+        """
+        Deserialize from bytes
+
+        :param packed: bytes containing at least one packed revertable op
+        :return: tuple of the deserialized op (a put or a delete) and the remaining serialized bytes
+        """
+        is_put, key_len, val_len = _OP_STRUCT.unpack(packed[:9])
+        key = packed[9:9 + key_len]
+        value = packed[9 + key_len:9 + key_len + val_len]
+        if is_put == 1:
+            return RevertablePut(key, value), packed[9 + key_len + val_len:]
+        return RevertableDelete(key, value), packed[9 + key_len + val_len:]
+
+    def __eq__(self, other: 'RevertableOp') -> bool:
+        return (self.is_put, self.key, self.value) == (other.is_put, other.key, other.value)
+
+    def __repr__(self) -> str:
+        return str(self)
+
+    def __str__(self) -> str:
+        from lbry.wallet.server.db.prefixes import auto_decode_item
+        k, v = auto_decode_item(self.key, self.value)
+        key = ''.join(c if c in printable else '.' for c in str(k))
+        val = ''.join(c if c in printable else '.' for c in str(v))
+        return f"{'PUT' if self.is_put else 'DELETE'} {DB_PREFIXES(self.key[:1]).name}: {key} | {val}"
+
+
+class RevertableDelete(RevertableOp):
+    def invert(self):
+        return RevertablePut(self.key, self.value)
+
+
+class RevertablePut(RevertableOp):
+    is_put = True
+
+    def invert(self):
+        return RevertableDelete(self.key, self.value)
+
+
+class OpStackIntegrity(Exception):
+    pass
+
+
+class RevertableOpStack:
+    def __init__(self, get_fn: Callable[[bytes], Optional[bytes]], unsafe_prefixes=None):
+        """
+        This represents a sequence of revertable puts and deletes to a key-value database that checks for integrity
+        violations when applying the puts and deletes. The integrity checks assure that keys that do not exist
+        are not deleted, and that when keys are deleted the current value is correctly known so that the delete
+        may be undone. When putting values, the integrity checks assure that existing values are not overwritten
+        without first being deleted. Updates are performed by applying a delete op for the old value and a put op
+        for the new value.
+
+        :param get_fn: getter function from an object implementing `KeyValueStorage`
+        :param unsafe_prefixes: optional set of prefixes to ignore integrity errors for, violations are still logged
+        """
+        self._get = get_fn
+        self._items = defaultdict(list)
+        self._unsafe_prefixes = unsafe_prefixes or set()
+
+    def append_op(self, op: RevertableOp):
+        """
+        Apply a put or delete op, checking that it introduces no integrity errors
+        """
+
+        inverted = op.invert()
+        if self._items[op.key] and inverted == self._items[op.key][-1]:
+            self._items[op.key].pop()  # if the new op is the inverse of the last op, we can safely null both
+            return
+        elif self._items[op.key] and self._items[op.key][-1] == op:  # duplicate of last op
+            return  # raise an error?
+        stored_val = self._get(op.key)
+        has_stored_val = stored_val is not None
+        delete_stored_op = None if not has_stored_val else RevertableDelete(op.key, stored_val)
+        will_delete_existing_stored = False if delete_stored_op is None else (delete_stored_op in self._items[op.key])
+        try:
+            if op.is_put and has_stored_val and not will_delete_existing_stored:
+                raise OpStackIntegrity(
+                    f"db op tries to add on top of existing key without deleting first: {op}"
+                )
+            elif op.is_delete and has_stored_val and stored_val != op.value and not will_delete_existing_stored:
+                # there is a value and we're not deleting it in this op
+                # check that a delete for the stored value is in the stack
+                raise OpStackIntegrity(f"db op tries to delete with incorrect existing value {op}")
+            elif op.is_delete and not has_stored_val:
+                raise OpStackIntegrity(f"db op tries to delete nonexistent key: {op}")
+            elif op.is_delete and stored_val != op.value:
+                raise OpStackIntegrity(f"db op tries to delete with incorrect value: {op}")
+        except OpStackIntegrity as err:
+            if op.key[:1] in self._unsafe_prefixes:
+                log.debug(f"skipping over integrity error: {err}")
+            else:
+                raise err
+        self._items[op.key].append(op)
+
+    def extend_ops(self, ops: Iterable[RevertableOp]):
+        """
+        Apply a sequence of put or delete ops, checking that they introduce no integrity errors
+        """
+        for op in ops:
+            self.append_op(op)
+
+    def clear(self):
+        self._items.clear()
+
+    def __len__(self):
+        return sum(map(len, self._items.values()))
+
+    def __iter__(self):
+        for key, ops in self._items.items():
+            for op in ops:
+                yield op
+
+    def __reversed__(self):
+        for key, ops in self._items.items():
+            for op in reversed(ops):
+                yield op
+
+    def get_undo_ops(self) -> bytes:
+        """
+        Get the serialized bytes to undo all of the changes made by the pending ops
+        """
+        return b''.join(op.invert().pack() for op in reversed(self))
+
+    def apply_packed_undo_ops(self, packed: bytes):
+        """
+        Unpack and apply a sequence of undo ops from serialized undo bytes
+        """
+        while packed:
+            op, packed = RevertableOp.unpack(packed)
+            self.append_op(op)
+
+    def get_last_op_for_key(self, key: bytes) -> Optional[RevertableOp]:
+        if key in self._items and self._items[key]:
+            return self._items[key][-1]

lbry/wallet/server/env.py

@@ -0,0 +1,391 @@
+# Copyright (c) 2016, Neil Booth
+#
+# All rights reserved.
+#
+# See the file "LICENCE" for information about the copyright
+# and warranty status of this software.
+
+import math
+import re
+import resource
+from os import environ
+from collections import namedtuple
+from ipaddress import ip_address
+
+from lbry.wallet.server.util import class_logger
+from lbry.wallet.server.coin import Coin, LBC, LBCTestNet, LBCRegTest
+import lbry.wallet.server.util as lib_util
+
+
+NetIdentity = namedtuple('NetIdentity', 'host tcp_port ssl_port nick_suffix')
+
+
+class Env:
+
+    # Peer discovery
+    PD_OFF, PD_SELF, PD_ON = range(3)
+
+    class Error(Exception):
+        pass
+
+    def __init__(self, coin=None, db_dir=None, daemon_url=None, host=None, rpc_host=None, elastic_host=None,
+                 elastic_port=None, loop_policy=None, max_query_workers=None, websocket_host=None, websocket_port=None,
+                 chain=None, es_index_prefix=None, cache_MB=None, reorg_limit=None, tcp_port=None,
+                 udp_port=None, ssl_port=None, ssl_certfile=None, ssl_keyfile=None, rpc_port=None,
+                 prometheus_port=None, max_subscriptions=None, banner_file=None, anon_logs=None, log_sessions=None,
+                 allow_lan_udp=None, cache_all_tx_hashes=None, cache_all_claim_txos=None, country=None,
+                 payment_address=None, donation_address=None, max_send=None, max_receive=None, max_sessions=None,
+                 session_timeout=None, drop_client=None, description=None, daily_fee=None,
+                 database_query_timeout=None, db_max_open_files=512, elastic_notifier_port=None,
+                 blocking_channel_ids=None, filtering_channel_ids=None, peer_hubs=None, peer_announce=None):
+        self.logger = class_logger(__name__, self.__class__.__name__)
+
+        self.db_dir = db_dir if db_dir is not None else self.required('DB_DIRECTORY')
+        self.daemon_url = daemon_url if daemon_url is not None else self.required('DAEMON_URL')
+        self.db_max_open_files = db_max_open_files
+
+        self.host = host if host is not None else self.default('HOST', 'localhost')
+        self.rpc_host = rpc_host if rpc_host is not None else self.default('RPC_HOST', 'localhost')
+        self.elastic_host = elastic_host if elastic_host is not None else self.default('ELASTIC_HOST', 'localhost')
+        self.elastic_port = elastic_port if elastic_port is not None else self.integer('ELASTIC_PORT', 9200)
+        self.elastic_notifier_port = elastic_notifier_port if elastic_notifier_port is not None else self.integer('ELASTIC_NOTIFIER_PORT', 19080)
+
+        self.loop_policy = self.set_event_loop_policy(
+            loop_policy if loop_policy is not None else self.default('EVENT_LOOP_POLICY', None)
+        )
+        self.obsolete(['UTXO_MB', 'HIST_MB', 'NETWORK'])
+        self.max_query_workers = max_query_workers if max_query_workers is not None else self.integer('MAX_QUERY_WORKERS', 4)
+        self.websocket_host = websocket_host if websocket_host is not None else self.default('WEBSOCKET_HOST', self.host)
+        self.websocket_port = websocket_port if websocket_port is not None else self.integer('WEBSOCKET_PORT', None)
+        if coin is not None:
+            assert issubclass(coin, Coin)
+            self.coin = coin
+        else:
+            chain = chain if chain is not None else self.default('NET', 'mainnet').strip().lower()
+            if chain == 'mainnet':
+                self.coin = LBC
+            elif chain == 'testnet':
+                self.coin = LBCTestNet
+            else:
+                self.coin = LBCRegTest
+        self.es_index_prefix = es_index_prefix if es_index_prefix is not None else self.default('ES_INDEX_PREFIX', '')
+        self.cache_MB = cache_MB if cache_MB is not None else self.integer('CACHE_MB', 1024)
+        self.reorg_limit = reorg_limit if reorg_limit is not None else self.integer('REORG_LIMIT', self.coin.REORG_LIMIT)
+        # Server stuff
+        self.tcp_port = tcp_port if tcp_port is not None else self.integer('TCP_PORT', None)
+        self.udp_port = udp_port if udp_port is not None else self.integer('UDP_PORT', self.tcp_port)
+        self.ssl_port = ssl_port if ssl_port is not None else self.integer('SSL_PORT', None)
+        if self.ssl_port:
+            self.ssl_certfile = ssl_certfile if ssl_certfile is not None else self.required('SSL_CERTFILE')
+            self.ssl_keyfile = ssl_keyfile if ssl_keyfile is not None else self.required('SSL_KEYFILE')
+        self.rpc_port = rpc_port if rpc_port is not None else self.integer('RPC_PORT', 8000)
+        self.prometheus_port = prometheus_port if prometheus_port is not None else self.integer('PROMETHEUS_PORT', 0)
+        self.max_subscriptions = max_subscriptions if max_subscriptions is not None else self.integer('MAX_SUBSCRIPTIONS', 10000)
+        self.banner_file = banner_file if banner_file is not None else self.default('BANNER_FILE', None)
+        # self.tor_banner_file = self.default('TOR_BANNER_FILE', self.banner_file)
+        self.anon_logs = anon_logs if anon_logs is not None else self.boolean('ANON_LOGS', False)
+        self.log_sessions = log_sessions if log_sessions is not None else self.integer('LOG_SESSIONS', 3600)
+        self.allow_lan_udp = allow_lan_udp if allow_lan_udp is not None else self.boolean('ALLOW_LAN_UDP', False)
+        self.cache_all_tx_hashes = cache_all_tx_hashes if cache_all_tx_hashes is not None else self.boolean('CACHE_ALL_TX_HASHES', False)
+        self.cache_all_claim_txos = cache_all_claim_txos if cache_all_claim_txos is not None else self.boolean('CACHE_ALL_CLAIM_TXOS', False)
+        self.country = country if country is not None else self.default('COUNTRY', 'US')
+        # Peer discovery
+        self.peer_discovery = self.peer_discovery_enum()
+        self.peer_announce = peer_announce if peer_announce is not None else self.boolean('PEER_ANNOUNCE', True)
+        if peer_hubs is not None:
+            self.peer_hubs = [p.strip("") for p in peer_hubs.split(",")]
+        else:
+            self.peer_hubs = self.extract_peer_hubs()
+        # self.tor_proxy_host = self.default('TOR_PROXY_HOST', 'localhost')
+        # self.tor_proxy_port = self.integer('TOR_PROXY_PORT', None)
+        # The electrum client takes the empty string as unspecified
+        self.payment_address = payment_address if payment_address is not None else self.default('PAYMENT_ADDRESS', '')
+        self.donation_address = donation_address if donation_address is not None else self.default('DONATION_ADDRESS', '')
+        # Server limits to help prevent DoS
+        self.max_send = max_send if max_send is not None else self.integer('MAX_SEND', 1000000)
+        self.max_receive = max_receive if max_receive is not None else self.integer('MAX_RECEIVE', 1000000)
+        # self.max_subs = self.integer('MAX_SUBS', 250000)
+        self.max_sessions = max_sessions if max_sessions is not None else self.sane_max_sessions()
+        # self.max_session_subs = self.integer('MAX_SESSION_SUBS', 50000)
+        self.session_timeout = session_timeout if session_timeout is not None else self.integer('SESSION_TIMEOUT', 600)
+        self.drop_client = drop_client if drop_client is not None else self.custom("DROP_CLIENT", None, re.compile)
+        self.description = description if description is not None else self.default('DESCRIPTION', '')
+        self.daily_fee = daily_fee if daily_fee is not None else self.string_amount('DAILY_FEE', '0')
+
+        # Identities
+        clearnet_identity = self.clearnet_identity()
+        tor_identity = self.tor_identity(clearnet_identity)
+        self.identities = [identity
+                           for identity in (clearnet_identity, tor_identity)
+                           if identity is not None]
+        self.database_query_timeout = database_query_timeout if database_query_timeout is not None else \
+            (float(self.integer('QUERY_TIMEOUT_MS', 10000)) / 1000.0)
+
+        # Filtering / Blocking
+        self.blocking_channel_ids = (blocking_channel_ids if blocking_channel_ids is not None else self.default('BLOCKING_CHANNEL_IDS', '')).split(' ')
+        self.filtering_channel_ids = (filtering_channel_ids if filtering_channel_ids is not None else self.default('FILTERING_CHANNEL_IDS', '')).split(' ')
+
+    @classmethod
+    def default(cls, envvar, default):
+        return environ.get(envvar, default)
+
+    @classmethod
+    def boolean(cls, envvar, default):
+        default = 'Yes' if default else ''
+        return bool(cls.default(envvar, default).strip())
+
+    @classmethod
+    def required(cls, envvar):
+        value = environ.get(envvar)
+        if value is None:
+            raise cls.Error(f'required envvar {envvar} not set')
+        return value
+
+    @classmethod
+    def string_amount(cls, envvar, default):
+        value = environ.get(envvar, default)
+        amount_pattern = re.compile("[0-9]{0,10}(\.[0-9]{1,8})?")
+        if len(value) > 0 and not amount_pattern.fullmatch(value):
+            raise cls.Error(f'{value} is not a valid amount for {envvar}')
+        return value
+
+    @classmethod
+    def integer(cls, envvar, default):
+        value = environ.get(envvar)
+        if value is None:
+            return default
+        try:
+            return int(value)
+        except Exception:
+            raise cls.Error(f'cannot convert envvar {envvar} value {value} to an integer')
+
+    @classmethod
+    def custom(cls, envvar, default, parse):
+        value = environ.get(envvar)
+        if value is None:
+            return default
+        try:
+            return parse(value)
+        except Exception as e:
+            raise cls.Error(f'cannot parse envvar {envvar} value {value}') from e
+
+    @classmethod
+    def obsolete(cls, envvars):
+        bad = [envvar for envvar in envvars if environ.get(envvar)]
+        if bad:
+            raise cls.Error(f'remove obsolete environment variables {bad}')
+
+    @classmethod
+    def set_event_loop_policy(cls, policy_name: str = None):
+        if not policy_name or policy_name == 'default':
+            import asyncio
+            return asyncio.get_event_loop_policy()
+        elif policy_name == 'uvloop':
+            import uvloop
+            import asyncio
+            loop_policy = uvloop.EventLoopPolicy()
+            asyncio.set_event_loop_policy(loop_policy)
+            return loop_policy
+        raise cls.Error(f'unknown event loop policy "{policy_name}"')
+
+    def cs_host(self, *, for_rpc):
+        """Returns the 'host' argument to pass to asyncio's create_server
+        call.  The result can be a single host name string, a list of
+        host name strings, or an empty string to bind to all interfaces.
+
+        If rpc is True the host to use for the RPC server is returned.
+        Otherwise the host to use for SSL/TCP servers is returned.
+        """
+        host = self.rpc_host if for_rpc else self.host
+        result = [part.strip() for part in host.split(',')]
+        if len(result) == 1:
+            result = result[0]
+        # An empty result indicates all interfaces, which we do not
+        # permitted for an RPC server.
+        if for_rpc and not result:
+            result = 'localhost'
+        if result == 'localhost':
+            # 'localhost' resolves to ::1 (ipv6) on many systems, which fails on default setup of
+            # docker, using 127.0.0.1 instead forces ipv4
+            result = '127.0.0.1'
+        return result
+
+    def sane_max_sessions(self):
+        """Return the maximum number of sessions to permit.  Normally this
+        is MAX_SESSIONS.  However, to prevent open file exhaustion, ajdust
+        downwards if running with a small open file rlimit."""
+        env_value = self.integer('MAX_SESSIONS', 1000)
+        nofile_limit = resource.getrlimit(resource.RLIMIT_NOFILE)[0]
+        # We give the DB 250 files; allow ElectrumX 100 for itself
+        value = max(0, min(env_value, nofile_limit - 350))
+        if value < env_value:
+            self.logger.warning(f'lowered maximum sessions from {env_value:,d} to {value:,d} '
+                                f'because your open file limit is {nofile_limit:,d}')
+        return value
+
+    def clearnet_identity(self):
+        host = self.default('REPORT_HOST', None)
+        if host is None:
+            return None
+        try:
+            ip = ip_address(host)
+        except ValueError:
+            bad = (not lib_util.is_valid_hostname(host)
+                   or host.lower() == 'localhost')
+        else:
+            bad = (ip.is_multicast or ip.is_unspecified
+                   or (ip.is_private and self.peer_announce))
+        if bad:
+            raise self.Error(f'"{host}" is not a valid REPORT_HOST')
+        tcp_port = self.integer('REPORT_TCP_PORT', self.tcp_port) or None
+        ssl_port = self.integer('REPORT_SSL_PORT', self.ssl_port) or None
+        if tcp_port == ssl_port:
+            raise self.Error('REPORT_TCP_PORT and REPORT_SSL_PORT '
+                             f'both resolve to {tcp_port}')
+        return NetIdentity(
+            host,
+            tcp_port,
+            ssl_port,
+            ''
+        )
+
+    def tor_identity(self, clearnet):
+        host = self.default('REPORT_HOST_TOR', None)
+        if host is None:
+            return None
+        if not host.endswith('.onion'):
+            raise self.Error(f'tor host "{host}" must end with ".onion"')
+
+        def port(port_kind):
+            """Returns the clearnet identity port, if any and not zero,
+            otherwise the listening port."""
+            result = 0
+            if clearnet:
+                result = getattr(clearnet, port_kind)
+            return result or getattr(self, port_kind)
+
+        tcp_port = self.integer('REPORT_TCP_PORT_TOR',
+                                port('tcp_port')) or None
+        ssl_port = self.integer('REPORT_SSL_PORT_TOR',
+                                port('ssl_port')) or None
+        if tcp_port == ssl_port:
+            raise self.Error('REPORT_TCP_PORT_TOR and REPORT_SSL_PORT_TOR '
+                             f'both resolve to {tcp_port}')
+
+        return NetIdentity(
+            host,
+            tcp_port,
+            ssl_port,
+            '_tor',
+        )
+
+    def hosts_dict(self):
+        return {identity.host: {'tcp_port': identity.tcp_port,
+                                'ssl_port': identity.ssl_port}
+                for identity in self.identities}
+
+    def peer_discovery_enum(self):
+        pd = self.default('PEER_DISCOVERY', 'on').strip().lower()
+        if pd in ('off', ''):
+            return self.PD_OFF
+        elif pd == 'self':
+            return self.PD_SELF
+        else:
+            return self.PD_ON
+
+    def extract_peer_hubs(self):
+        return [hub.strip() for hub in self.default('PEER_HUBS', '').split(',') if hub.strip()]
+
+    @classmethod
+    def contribute_to_arg_parser(cls, parser):
+        parser.add_argument('--db_dir', type=str, help='path of the directory containing lbry-leveldb',
+                            default=cls.default('DB_DIRECTORY', None))
+        parser.add_argument('--daemon_url',
+                            help='URL for rpc from lbrycrd, <rpcuser>:<rpcpassword>@<lbrycrd rpc ip><lbrycrd rpc port>',
+                            default=cls.default('DAEMON_URL', None))
+        parser.add_argument('--db_max_open_files', type=int, default=512,
+                            help='number of files leveldb can have open at a time')
+        parser.add_argument('--host', type=str, default=cls.default('HOST', 'localhost'),
+                            help='Interface for hub server to listen on')
+        parser.add_argument('--tcp_port', type=int, default=cls.integer('TCP_PORT', 50001),
+                            help='TCP port to listen on for hub server')
+        parser.add_argument('--udp_port', type=int, default=cls.integer('UDP_PORT', 50001),
+                            help='UDP port to listen on for hub server')
+        parser.add_argument('--rpc_host', default=cls.default('RPC_HOST', 'localhost'), type=str,
+                            help='Listening interface for admin rpc')
+        parser.add_argument('--rpc_port', default=cls.integer('RPC_PORT', 8000), type=int,
+                            help='Listening port for admin rpc')
+        parser.add_argument('--websocket_host', default=cls.default('WEBSOCKET_HOST', 'localhost'), type=str,
+                            help='Listening interface for websocket')
+        parser.add_argument('--websocket_port', default=cls.integer('WEBSOCKET_PORT', None), type=int,
+                            help='Listening port for websocket')
+
+        parser.add_argument('--ssl_port', default=cls.integer('SSL_PORT', None), type=int,
+                            help='SSL port to listen on for hub server')
+        parser.add_argument('--ssl_certfile', default=cls.default('SSL_CERTFILE', None), type=str,
+                            help='Path to SSL cert file')
+        parser.add_argument('--ssl_keyfile', default=cls.default('SSL_KEYFILE', None), type=str,
+                            help='Path to SSL key file')
+        parser.add_argument('--reorg_limit', default=cls.integer('REORG_LIMIT', 200), type=int, help='Max reorg depth')
+        parser.add_argument('--elastic_host', default=cls.default('ELASTIC_HOST', 'localhost'), type=str,
+                            help='elasticsearch host')
+        parser.add_argument('--elastic_port', default=cls.integer('ELASTIC_PORT', 9200), type=int,
+                            help='elasticsearch port')
+        parser.add_argument('--es_index_prefix', default=cls.default('ES_INDEX_PREFIX', ''), type=str)
+        parser.add_argument('--loop_policy', default=cls.default('EVENT_LOOP_POLICY', 'default'), type=str,
+                            choices=['default', 'uvloop'])
+        parser.add_argument('--max_query_workers', type=int, default=cls.integer('MAX_QUERY_WORKERS', 4),
+                            help='number of threads used by the request handler to read the database')
+        parser.add_argument('--cache_MB', type=int, default=cls.integer('CACHE_MB', 1024),
+                            help='size of the leveldb lru cache, in megabytes')
+        parser.add_argument('--cache_all_tx_hashes', type=bool,
+                            help='Load all tx hashes into memory. This will make address subscriptions and sync, '
+                                 'resolve, transaction fetching, and block sync all faster at the expense of higher '
+                                 'memory usage')
+        parser.add_argument('--cache_all_claim_txos', type=bool,
+                            help='Load all claim txos into memory. This will make address subscriptions and sync, '
+                                 'resolve, transaction fetching, and block sync all faster at the expense of higher '
+                                 'memory usage')
+        parser.add_argument('--prometheus_port', type=int, default=cls.integer('PROMETHEUS_PORT', 0),
+                            help='port for hub prometheus metrics to listen on, disabled by default')
+        parser.add_argument('--max_subscriptions', type=int, default=cls.integer('MAX_SUBSCRIPTIONS', 10000),
+                            help='max subscriptions per connection')
+        parser.add_argument('--banner_file', type=str, default=cls.default('BANNER_FILE', None),
+                            help='path to file containing banner text')
+        parser.add_argument('--anon_logs', type=bool, default=cls.boolean('ANON_LOGS', False),
+                            help="don't log ip addresses")
+        parser.add_argument('--allow_lan_udp', type=bool, default=cls.boolean('ALLOW_LAN_UDP', False),
+                            help='reply to hub UDP ping messages from LAN ip addresses')
+        parser.add_argument('--country', type=str, default=cls.default('COUNTRY', 'US'), help='')
+        parser.add_argument('--max_send', type=int, default=cls.default('MAX_SEND', 1000000), help='')
+        parser.add_argument('--max_receive', type=int, default=cls.default('MAX_RECEIVE', 1000000), help='')
+        parser.add_argument('--max_sessions', type=int, default=cls.default('MAX_SESSIONS', 1000), help='')
+        parser.add_argument('--session_timeout', type=int, default=cls.default('SESSION_TIMEOUT', 600), help='')
+        parser.add_argument('--drop_client', type=str, default=cls.default('DROP_CLIENT', None), help='')
+        parser.add_argument('--description', type=str, default=cls.default('DESCRIPTION', ''), help='')
+        parser.add_argument('--daily_fee', type=float, default=cls.default('DAILY_FEE', 0.0), help='')
+        parser.add_argument('--payment_address', type=str, default=cls.default('PAYMENT_ADDRESS', ''), help='')
+        parser.add_argument('--donation_address', type=str, default=cls.default('DONATION_ADDRESS', ''), help='')
+        parser.add_argument('--chain', type=str, default=cls.default('NET', 'mainnet'),
+                            help="Which chain to use, default is mainnet")
+        parser.add_argument('--query_timeout_ms', type=int, default=cls.integer('QUERY_TIMEOUT_MS', 10000),
+                            help="elasticsearch query timeout")
+
+    @classmethod
+    def from_arg_parser(cls, args):
+        return cls(
+            db_dir=args.db_dir, daemon_url=args.daemon_url, db_max_open_files=args.db_max_open_files,
+            host=args.host, rpc_host=args.rpc_host, elastic_host=args.elastic_host, elastic_port=args.elastic_port,
+            loop_policy=args.loop_policy, max_query_workers=args.max_query_workers, websocket_host=args.websocket_host,
+            websocket_port=args.websocket_port, chain=args.chain, es_index_prefix=args.es_index_prefix,
+            cache_MB=args.cache_MB, reorg_limit=args.reorg_limit, tcp_port=args.tcp_port,
+            udp_port=args.udp_port, ssl_port=args.ssl_port, ssl_certfile=args.ssl_certfile,
+            ssl_keyfile=args.ssl_keyfile, rpc_port=args.rpc_port, prometheus_port=args.prometheus_port,
+            max_subscriptions=args.max_subscriptions, banner_file=args.banner_file, anon_logs=args.anon_logs,
+            log_sessions=None, allow_lan_udp=args.allow_lan_udp,
+            cache_all_tx_hashes=args.cache_all_tx_hashes, cache_all_claim_txos=args.cache_all_claim_txos,
+            country=args.country, payment_address=args.payment_address, donation_address=args.donation_address,
+            max_send=args.max_send, max_receive=args.max_receive, max_sessions=args.max_sessions,
+            session_timeout=args.session_timeout, drop_client=args.drop_client, description=args.description,
+            daily_fee=args.daily_fee, database_query_timeout=(args.query_timeout_ms / 1000)
+        )

lbry/wallet/server/hash.py

@@ -0,0 +1,160 @@
+# Copyright (c) 2016-2017, Neil Booth
+#
+# All rights reserved.
+#
+# The MIT License (MIT)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+"""Cryptograph hash functions and related classes."""
+
+
+import hashlib
+import hmac
+
+from lbry.wallet.server.util import bytes_to_int, int_to_bytes, hex_to_bytes
+
+_sha256 = hashlib.sha256
+_sha512 = hashlib.sha512
+_new_hash = hashlib.new
+_new_hmac = hmac.new
+HASHX_LEN = 11
+CLAIM_HASH_LEN = 20
+
+
+def sha256(x):
+    """Simple wrapper of hashlib sha256."""
+    return _sha256(x).digest()
+
+
+def ripemd160(x):
+    """Simple wrapper of hashlib ripemd160."""
+    h = _new_hash('ripemd160')
+    h.update(x)
+    return h.digest()
+
+
+def double_sha256(x):
+    """SHA-256 of SHA-256, as used extensively in bitcoin."""
+    return sha256(sha256(x))
+
+
+def hmac_sha512(key, msg):
+    """Use SHA-512 to provide an HMAC."""
+    return _new_hmac(key, msg, _sha512).digest()
+
+
+def hash160(x):
+    """RIPEMD-160 of SHA-256.
+
+    Used to make bitcoin addresses from pubkeys."""
+    return ripemd160(sha256(x))
+
+
+def hash_to_hex_str(x: bytes) -> str:
+    """Convert a big-endian binary hash to displayed hex string.
+
+    Display form of a binary hash is reversed and converted to hex.
+    """
+    return x[::-1].hex()
+
+
+def hex_str_to_hash(x: str) -> bytes:
+    """Convert a displayed hex string to a binary hash."""
+    return hex_to_bytes(x)[::-1]
+
+
+class Base58Error(Exception):
+    """Exception used for Base58 errors."""
+
+
+class Base58:
+    """Class providing base 58 functionality."""
+
+    chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
+    assert len(chars) == 58
+    cmap = {c: n for n, c in enumerate(chars)}
+
+    @staticmethod
+    def char_value(c):
+        val = Base58.cmap.get(c)
+        if val is None:
+            raise Base58Error(f'invalid base 58 character "{c}"')
+        return val
+
+    @staticmethod
+    def decode(txt):
+        """Decodes txt into a big-endian bytearray."""
+        if not isinstance(txt, str):
+            raise TypeError('a string is required')
+
+        if not txt:
+            raise Base58Error('string cannot be empty')
+
+        value = 0
+        for c in txt:
+            value = value * 58 + Base58.char_value(c)
+
+        result = int_to_bytes(value)
+
+        # Prepend leading zero bytes if necessary
+        count = 0
+        for c in txt:
+            if c != '1':
+                break
+            count += 1
+        if count:
+            result = bytes(count) + result
+
+        return result
+
+    @staticmethod
+    def encode(be_bytes):
+        """Converts a big-endian bytearray into a base58 string."""
+        value = bytes_to_int(be_bytes)
+
+        txt = ''
+        while value:
+            value, mod = divmod(value, 58)
+            txt += Base58.chars[mod]
+
+        for byte in be_bytes:
+            if byte != 0:
+                break
+            txt += '1'
+
+        return txt[::-1]
+
+    @staticmethod
+    def decode_check(txt, *, hash_fn=double_sha256):
+        """Decodes a Base58Check-encoded string to a payload.  The version
+        prefixes it."""
+        be_bytes = Base58.decode(txt)
+        result, check = be_bytes[:-4], be_bytes[-4:]
+        if check != hash_fn(result)[:4]:
+            raise Base58Error(f'invalid base 58 checksum for {txt}')
+        return result
+
+    @staticmethod
+    def encode_check(payload, *, hash_fn=double_sha256):
+        """Encodes a payload bytearray (which includes the version byte(s))
+        into a Base58Check string."""
+        be_bytes = payload + hash_fn(payload)[:4]
+        return Base58.encode(be_bytes)

lbry/wallet/server/mempool.py

@@ -0,0 +1,233 @@
+# Copyright (c) 2016-2018, Neil Booth
+#
+# All rights reserved.
+#
+# See the file "LICENCE" for information about the copyright
+# and warranty status of this software.
+
+"""Mempool handling."""
+import asyncio
+import itertools
+import time
+import attr
+import typing
+from collections import defaultdict
+from prometheus_client import Histogram
+from lbry.wallet.server.util import class_logger
+
+if typing.TYPE_CHECKING:
+    from lbry.wallet.server.session import LBRYSessionManager
+    from wallet.server.db.db import LevelDB
+
+
+@attr.s(slots=True)
+class MemPoolTx:
+    prevouts = attr.ib()
+    # A pair is a (hashX, value) tuple
+    in_pairs = attr.ib()
+    out_pairs = attr.ib()
+    fee = attr.ib()
+    size = attr.ib()
+    raw_tx = attr.ib()
+
+
+@attr.s(slots=True)
+class MemPoolTxSummary:
+    hash = attr.ib()
+    fee = attr.ib()
+    has_unconfirmed_inputs = attr.ib()
+
+
+NAMESPACE = "wallet_server"
+HISTOGRAM_BUCKETS = (
+    .005, .01, .025, .05, .075, .1, .25, .5, .75, 1.0, 2.5, 5.0, 7.5, 10.0, 15.0, 20.0, 30.0, 60.0, float('inf')
+)
+mempool_process_time_metric = Histogram(
+    "processed_mempool", "Time to process mempool and notify touched addresses",
+    namespace=NAMESPACE, buckets=HISTOGRAM_BUCKETS
+)
+
+
+class MemPool:
+    def __init__(self, coin, db: 'LevelDB', refresh_secs=1.0):
+        self.coin = coin
+        self._db = db
+        self.logger = class_logger(__name__, self.__class__.__name__)
+        self.txs = {}
+        self.raw_mempool = {}
+        self.touched_hashXs: typing.DefaultDict[bytes, typing.Set[bytes]] = defaultdict(set)  # None can be a key
+        self.refresh_secs = refresh_secs
+        self.mempool_process_time_metric = mempool_process_time_metric
+        self.session_manager: typing.Optional['LBRYSessionManager'] = None
+
+    async def refresh_hashes(self, height: int):
+        start = time.perf_counter()
+        new_touched = await self._process_mempool()
+        await self.on_mempool(set(self.touched_hashXs), new_touched, height)
+        duration = time.perf_counter() - start
+        self.mempool_process_time_metric.observe(duration)
+
+    async def _process_mempool(self) -> typing.Set[bytes]:  # returns list of new touched hashXs
+        # Re-sync with the new set of hashes
+
+        # hashXs = self.hashXs  # hashX: [tx_hash, ...]
+        touched_hashXs = set()
+
+        # Remove txs that aren't in mempool anymore
+        for tx_hash in set(self.txs).difference(self.raw_mempool.keys()):
+            tx = self.txs.pop(tx_hash)
+            tx_hashXs = {hashX for hashX, value in tx.in_pairs}.union({hashX for hashX, value in tx.out_pairs})
+            for hashX in tx_hashXs:
+                if hashX in self.touched_hashXs and tx_hash in self.touched_hashXs[hashX]:
+                    self.touched_hashXs[hashX].remove(tx_hash)
+                    if not self.touched_hashXs[hashX]:
+                        self.touched_hashXs.pop(hashX)
+            touched_hashXs.update(tx_hashXs)
+
+        tx_map = {}
+        for tx_hash, raw_tx in self.raw_mempool.items():
+            if tx_hash in self.txs:
+                continue
+            tx, tx_size = self.coin.DESERIALIZER(raw_tx).read_tx_and_vsize()
+            # Convert the inputs and outputs into (hashX, value) pairs
+            # Drop generation-like inputs from MemPoolTx.prevouts
+            txin_pairs = tuple((txin.prev_hash, txin.prev_idx)
+                               for txin in tx.inputs
+                               if not txin.is_generation())
+            txout_pairs = tuple((self.coin.hashX_from_script(txout.pk_script), txout.value)
+                                for txout in tx.outputs)
+
+            tx_map[tx_hash] = MemPoolTx(txin_pairs, None, txout_pairs, 0, tx_size, raw_tx)
+
+        # Determine all prevouts not in the mempool, and fetch the
+        # UTXO information from the database.  Failed prevout lookups
+        # return None - concurrent database updates happen - which is
+        # relied upon by _accept_transactions. Ignore prevouts that are
+        # generation-like.
+        # prevouts = tuple(prevout for tx in tx_map.values()
+        #                  for prevout in tx.prevouts
+        #                  if prevout[0] not in self.raw_mempool)
+        # utxos = await self._db.lookup_utxos(prevouts)
+        # utxo_map = dict(zip(prevouts, utxos))
+        # unspent = set(utxo_map)
+
+        for tx_hash, tx in tx_map.items():
+            in_pairs = []
+            for prevout in tx.prevouts:
+                # utxo = utxo_map.get(prevout)
+                # if not utxo:
+                prev_hash, prev_index = prevout
+                if prev_hash in self.txs:  # accepted mempool
+                    utxo = self.txs[prev_hash].out_pairs[prev_index]
+                elif prev_hash in tx_map:  # this set of changes
+                    utxo = tx_map[prev_hash].out_pairs[prev_index]
+                else:  # get it from the db
+                    prev_tx_num = self._db.prefix_db.tx_num.get(prev_hash)
+                    if not prev_tx_num:
+                        continue
+                    prev_tx_num = prev_tx_num.tx_num
+                    hashX_val = self._db.prefix_db.hashX_utxo.get(tx_hash[:4], prev_tx_num, prev_index)
+                    if not hashX_val:
+                        continue
+                    hashX = hashX_val.hashX
+                    utxo_value = self._db.prefix_db.utxo.get(hashX, prev_tx_num, prev_index)
+                    utxo = (hashX, utxo_value.amount)
+                    # if not prev_raw:
+                    #     print("derp", prev_hash[::-1].hex())
+                    #     print(self._db.get_tx_num(prev_hash))
+                    # prev_tx, prev_tx_size = self.coin.DESERIALIZER(prev_raw.raw_tx).read_tx_and_vsize()
+                    # prev_txo = prev_tx.outputs[prev_index]
+                    # utxo = (self.coin.hashX_from_script(prev_txo.pk_script), prev_txo.value)
+                in_pairs.append(utxo)
+
+            # # Spend the prevouts
+            # unspent.difference_update(tx.prevouts)
+
+            # Save the in_pairs, compute the fee and accept the TX
+            tx.in_pairs = tuple(in_pairs)
+            # Avoid negative fees if dealing with generation-like transactions
+            # because some in_parts would be missing
+            tx.fee = max(0, (sum(v for _, v in tx.in_pairs) -
+                             sum(v for _, v in tx.out_pairs)))
+            self.txs[tx_hash] = tx
+            # print(f"added {tx_hash[::-1].hex()} reader to mempool")
+
+            for hashX, value in itertools.chain(tx.in_pairs, tx.out_pairs):
+                self.touched_hashXs[hashX].add(tx_hash)
+                touched_hashXs.add(hashX)
+        # utxo_map = {prevout: utxo_map[prevout] for prevout in unspent}
+
+        return touched_hashXs
+
+    def transaction_summaries(self, hashX):
+        """Return a list of MemPoolTxSummary objects for the hashX."""
+        result = []
+        for tx_hash in self.touched_hashXs.get(hashX, ()):
+            tx = self.txs[tx_hash]
+            has_ui = any(hash in self.txs for hash, idx in tx.prevouts)
+            result.append(MemPoolTxSummary(tx_hash, tx.fee, has_ui))
+        return result
+
+    def get_mempool_height(self, tx_hash: bytes) -> int:
+        # Height Progression
+        #   -2: not broadcast
+        #   -1: in mempool but has unconfirmed inputs
+        #    0: in mempool and all inputs confirmed
+        # +num: confirmed in a specific block (height)
+        if tx_hash not in self.txs:
+            return -2
+        tx = self.txs[tx_hash]
+        unspent_inputs = any(hash in self.raw_mempool for hash, idx in tx.prevouts)
+        if unspent_inputs:
+            return -1
+        return 0
+
+    async def start(self, height, session_manager: 'LBRYSessionManager'):
+        self.notify_sessions = session_manager._notify_sessions
+        await self._notify_sessions(height, set(), set())
+
+    async def on_mempool(self, touched, new_touched, height):
+        await self._notify_sessions(height, touched, new_touched)
+
+    async def on_block(self, touched, height):
+        await self._notify_sessions(height, touched, set())
+
+    async def _notify_sessions(self, height, touched, new_touched):
+        """Notify sessions about height changes and touched addresses."""
+        height_changed = height != self.session_manager.notified_height
+        if height_changed:
+            await self.session_manager._refresh_hsub_results(height)
+
+        if not self.session_manager.sessions:
+            return
+
+        if height_changed:
+            header_tasks = [
+                session.send_notification('blockchain.headers.subscribe', (self.session_manager.hsub_results[session.subscribe_headers_raw], ))
+                for session in self.session_manager.sessions.values() if session.subscribe_headers
+            ]
+            if header_tasks:
+                self.logger.info(f'notify {len(header_tasks)} sessions of new header')
+                asyncio.create_task(asyncio.wait(header_tasks))
+            for hashX in touched.intersection(self.session_manager.mempool_statuses.keys()):
+                self.session_manager.mempool_statuses.pop(hashX, None)
+        # self.bp._chain_executor
+        await asyncio.get_event_loop().run_in_executor(
+            None, touched.intersection_update, self.session_manager.hashx_subscriptions_by_session.keys()
+        )
+
+        if touched or new_touched or (height_changed and self.session_manager.mempool_statuses):
+            notified_hashxs = 0
+            session_hashxes_to_notify = defaultdict(list)
+            to_notify = touched if height_changed else new_touched
+
+            for hashX in to_notify:
+                if hashX not in self.session_manager.hashx_subscriptions_by_session:
+                    continue
+                for session_id in self.session_manager.hashx_subscriptions_by_session[hashX]:
+                    session_hashxes_to_notify[session_id].append(hashX)
+                    notified_hashxs += 1
+            for session_id, hashXes in session_hashxes_to_notify.items():
+                asyncio.create_task(self.session_manager.sessions[session_id].send_history_notifications(*hashXes))
+            if session_hashxes_to_notify:
+                self.logger.info(f'notified {len(session_hashxes_to_notify)} sessions/{notified_hashxs:,d} touched addresses')

lbry/wallet/server/merkle.py

@@ -0,0 +1,258 @@
+# Copyright (c) 2018, Neil Booth
+#
+# All rights reserved.
+#
+# The MIT License (MIT)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+# and warranty status of this software.
+
+"""Merkle trees, branches, proofs and roots."""
+
+from asyncio import Event
+from math import ceil, log
+
+from lbry.wallet.server.hash import double_sha256
+
+
+class Merkle:
+    """Perform merkle tree calculations on binary hashes using a given hash
+    function.
+
+    If the hash count is not even, the final hash is repeated when
+    calculating the next merkle layer up the tree.
+    """
+
+    def __init__(self, hash_func=double_sha256):
+        self.hash_func = hash_func
+
+    @staticmethod
+    def tree_depth(hash_count):
+        return Merkle.branch_length(hash_count) + 1
+
+    @staticmethod
+    def branch_length(hash_count):
+        """Return the length of a merkle branch given the number of hashes."""
+        if not isinstance(hash_count, int):
+            raise TypeError('hash_count must be an integer')
+        if hash_count < 1:
+            raise ValueError('hash_count must be at least 1')
+        return ceil(log(hash_count, 2))
+
+    @staticmethod
+    def branch_and_root(hashes, index, length=None, hash_func=double_sha256):
+        """Return a (merkle branch, merkle_root) pair given hashes, and the
+        index of one of those hashes.
+        """
+        hashes = list(hashes)
+        if not isinstance(index, int):
+            raise TypeError('index must be an integer')
+        # This also asserts hashes is not empty
+        if not 0 <= index < len(hashes):
+            raise ValueError(f"index '{index}/{len(hashes)}' out of range")
+        natural_length = Merkle.branch_length(len(hashes))
+        if length is None:
+            length = natural_length
+        else:
+            if not isinstance(length, int):
+                raise TypeError('length must be an integer')
+            if length < natural_length:
+                raise ValueError('length out of range')
+
+        branch = []
+        for _ in range(length):
+            if len(hashes) & 1:
+                hashes.append(hashes[-1])
+            branch.append(hashes[index ^ 1])
+            index >>= 1
+            hashes = [hash_func(hashes[n] + hashes[n + 1])
+                      for n in range(0, len(hashes), 2)]
+
+        return branch, hashes[0]
+
+    @staticmethod
+    def root(hashes, length=None):
+        """Return the merkle root of a non-empty iterable of binary hashes."""
+        branch, root = Merkle.branch_and_root(hashes, 0, length)
+        return root
+
+    # @staticmethod
+    # def root_from_proof(hash, branch, index, hash_func=double_sha256):
+    #     """Return the merkle root given a hash, a merkle branch to it, and
+    #     its index in the hashes array.
+    #
+    #     branch is an iterable sorted deepest to shallowest.  If the
+    #     returned root is the expected value then the merkle proof is
+    #     verified.
+    #
+    #     The caller should have confirmed the length of the branch with
+    #     branch_length().  Unfortunately this is not easily done for
+    #     bitcoin transactions as the number of transactions in a block
+    #     is unknown to an SPV client.
+    #     """
+    #     for elt in branch:
+    #         if index & 1:
+    #             hash = hash_func(elt + hash)
+    #         else:
+    #             hash = hash_func(hash + elt)
+    #         index >>= 1
+    #     if index:
+    #         raise ValueError('index out of range for branch')
+    #     return hash
+
+    @staticmethod
+    def level(hashes, depth_higher):
+        """Return a level of the merkle tree of hashes the given depth
+        higher than the bottom row of the original tree."""
+        size = 1 << depth_higher
+        root = Merkle.root
+        return [root(hashes[n: n + size], depth_higher)
+                for n in range(0, len(hashes), size)]
+
+    @staticmethod
+    def branch_and_root_from_level(level, leaf_hashes, index,
+                                   depth_higher):
+        """Return a (merkle branch, merkle_root) pair when a merkle-tree has a
+        level cached.
+
+        To maximally reduce the amount of data hashed in computing a
+        markle branch, cache a tree of depth N at level N // 2.
+
+        level is a list of hashes in the middle of the tree (returned
+        by level())
+
+        leaf_hashes are the leaves needed to calculate a partial branch
+        up to level.
+
+        depth_higher is how much higher level is than the leaves of the tree
+
+        index is the index in the full list of hashes of the hash whose
+        merkle branch we want.
+        """
+        if not isinstance(level, list):
+            raise TypeError("level must be a list")
+        if not isinstance(leaf_hashes, list):
+            raise TypeError("leaf_hashes must be a list")
+        leaf_index = (index >> depth_higher) << depth_higher
+        leaf_branch, leaf_root = Merkle.branch_and_root(
+            leaf_hashes, index - leaf_index, depth_higher)
+        index >>= depth_higher
+        level_branch, root = Merkle.branch_and_root(level, index)
+        # Check last so that we know index is in-range
+        if leaf_root != level[index]:
+            raise ValueError('leaf hashes inconsistent with level')
+        return leaf_branch + level_branch, root
+
+
+class MerkleCache:
+    """A cache to calculate merkle branches efficiently."""
+
+    def __init__(self, merkle, source_func):
+        """Initialise a cache hashes taken from source_func:
+
+           async def source_func(index, count):
+              ...
+        """
+        self.merkle = merkle
+        self.source_func = source_func
+        self.length = 0
+        self.depth_higher = 0
+        self.initialized = Event()
+
+    def _segment_length(self):
+        return 1 << self.depth_higher
+
+    def _leaf_start(self, index):
+        """Given a level's depth higher and a hash index, return the leaf
+        index and leaf hash count needed to calculate a merkle branch.
+        """
+        depth_higher = self.depth_higher
+        return (index >> depth_higher) << depth_higher
+
+    def _level(self, hashes):
+        return self.merkle.level(hashes, self.depth_higher)
+
+    async def _extend_to(self, length):
+        """Extend the length of the cache if necessary."""
+        if length <= self.length:
+            return
+        # Start from the beginning of any final partial segment.
+        # Retain the value of depth_higher; in practice this is fine
+        start = self._leaf_start(self.length)
+        hashes = await self.source_func(start, length - start)
+        self.level[start >> self.depth_higher:] = self._level(hashes)
+        self.length = length
+
+    async def _level_for(self, length):
+        """Return a (level_length, final_hash) pair for a truncation
+        of the hashes to the given length."""
+        if length == self.length:
+            return self.level
+        level = self.level[:length >> self.depth_higher]
+        leaf_start = self._leaf_start(length)
+        count = min(self._segment_length(), length - leaf_start)
+        hashes = await self.source_func(leaf_start, count)
+        level += self._level(hashes)
+        return level
+
+    async def initialize(self, length):
+        """Call to initialize the cache to a source of given length."""
+        self.length = length
+        self.depth_higher = self.merkle.tree_depth(length) // 2
+        self.level = self._level(await self.source_func(0, length))
+        self.initialized.set()
+
+    def truncate(self, length):
+        """Truncate the cache so it covers no more than length underlying
+        hashes."""
+        if not isinstance(length, int):
+            raise TypeError('length must be an integer')
+        if length <= 0:
+            raise ValueError('length must be positive')
+        if length >= self.length:
+            return
+        length = self._leaf_start(length)
+        self.length = length
+        self.level[length >> self.depth_higher:] = []
+
+    async def branch_and_root(self, length, index):
+        """Return a merkle branch and root.  Length is the number of
+        hashes used to calculate the merkle root, index is the position
+        of the hash to calculate the branch of.
+
+        index must be less than length, which must be at least 1."""
+        if not isinstance(length, int):
+            raise TypeError('length must be an integer')
+        if not isinstance(index, int):
+            raise TypeError('index must be an integer')
+        if length <= 0:
+            raise ValueError('length must be positive')
+        if index >= length:
+            raise ValueError('index must be less than length')
+        await self.initialized.wait()
+        await self._extend_to(length)
+        leaf_start = self._leaf_start(index)
+        count = min(self._segment_length(), length - leaf_start)
+        leaf_hashes = await self.source_func(leaf_start, count)
+        if length < self._segment_length():
+            return self.merkle.branch_and_root(leaf_hashes, index)
+        level = await self._level_for(length)
+        return self.merkle.branch_and_root_from_level(
+            level, leaf_hashes, index, self.depth_higher)

lbry/wallet/server/metrics.py

@@ -0,0 +1,135 @@
+import time
+import math
+from typing import Tuple
+
+
+def calculate_elapsed(start) -> int:
+    return int((time.perf_counter() - start) * 1000)
+
+
+def calculate_avg_percentiles(data) -> Tuple[int, int, int, int, int, int, int, int]:
+    if not data:
+        return 0, 0, 0, 0, 0, 0, 0, 0
+    data.sort()
+    size = len(data)
+    return (
+        int(sum(data) / size),
+        data[0],
+        data[math.ceil(size * .05) - 1],
+        data[math.ceil(size * .25) - 1],
+        data[math.ceil(size * .50) - 1],
+        data[math.ceil(size * .75) - 1],
+        data[math.ceil(size * .95) - 1],
+        data[-1]
+    )
+
+
+def remove_select_list(sql) -> str:
+    return sql[sql.index('FROM'):]
+
+
+class APICallMetrics:
+
+    def __init__(self, name):
+        self.name = name
+
+        # total requests received
+        self.receive_count = 0
+        self.cache_response_count = 0
+
+        # millisecond timings for query based responses
+        self.query_response_times = []
+        self.query_intrp_times = []
+        self.query_error_times = []
+
+        self.query_python_times = []
+        self.query_wait_times = []
+        self.query_sql_times = []  # aggregate total of multiple SQL calls made per request
+
+        self.individual_sql_times = []  # every SQL query run on server
+
+        # actual queries
+        self.errored_queries = set()
+        self.interrupted_queries = set()
+
+    def to_json(self):
+        return {
+            # total requests received
+            "receive_count": self.receive_count,
+            # sum of these is total responses made
+            "cache_response_count": self.cache_response_count,
+            "query_response_count": len(self.query_response_times),
+            "intrp_response_count": len(self.query_intrp_times),
+            "error_response_count": len(self.query_error_times),
+            # millisecond timings for non-cache responses
+            "response": calculate_avg_percentiles(self.query_response_times),
+            "interrupt": calculate_avg_percentiles(self.query_intrp_times),
+            "error": calculate_avg_percentiles(self.query_error_times),
+            # response, interrupt and error each also report the python, wait and sql stats:
+            "python": calculate_avg_percentiles(self.query_python_times),
+            "wait": calculate_avg_percentiles(self.query_wait_times),
+            "sql": calculate_avg_percentiles(self.query_sql_times),
+            # extended timings for individual sql executions
+            "individual_sql": calculate_avg_percentiles(self.individual_sql_times),
+            "individual_sql_count": len(self.individual_sql_times),
+            # actual queries
+            "errored_queries": list(self.errored_queries),
+            "interrupted_queries": list(self.interrupted_queries),
+        }
+
+    def start(self):
+        self.receive_count += 1
+
+    def cache_response(self):
+        self.cache_response_count += 1
+
+    def _add_query_timings(self, request_total_time, metrics):
+        if metrics and 'execute_query' in metrics:
+            sub_process_total = metrics[self.name][0]['total']
+            individual_query_times = [f['total'] for f in metrics['execute_query']]
+            aggregated_query_time = sum(individual_query_times)
+            self.individual_sql_times.extend(individual_query_times)
+            self.query_sql_times.append(aggregated_query_time)
+            self.query_python_times.append(sub_process_total - aggregated_query_time)
+            self.query_wait_times.append(request_total_time - sub_process_total)
+
+    @staticmethod
+    def _add_queries(query_set, metrics):
+        if metrics and 'execute_query' in metrics:
+            for execute_query in metrics['execute_query']:
+                if 'sql' in execute_query:
+                    query_set.add(remove_select_list(execute_query['sql']))
+
+    def query_response(self, start, metrics):
+        self.query_response_times.append(calculate_elapsed(start))
+        self._add_query_timings(self.query_response_times[-1], metrics)
+
+    def query_interrupt(self, start, metrics):
+        self.query_intrp_times.append(calculate_elapsed(start))
+        self._add_queries(self.interrupted_queries, metrics)
+        self._add_query_timings(self.query_intrp_times[-1], metrics)
+
+    def query_error(self, start, metrics):
+        self.query_error_times.append(calculate_elapsed(start))
+        self._add_queries(self.errored_queries, metrics)
+        self._add_query_timings(self.query_error_times[-1], metrics)
+
+
+class ServerLoadData:
+
+    def __init__(self):
+        self._apis = {}
+
+    def for_api(self, name) -> APICallMetrics:
+        if name not in self._apis:
+            self._apis[name] = APICallMetrics(name)
+        return self._apis[name]
+
+    def to_json_and_reset(self, status):
+        try:
+            return {
+                'api': {name: api.to_json() for name, api in self._apis.items()},
+                'status': status
+            }
+        finally:
+            self._apis = {}

lbry/wallet/server/prefetcher.py

@@ -0,0 +1,119 @@
+import asyncio
+import typing
+
+from lbry.wallet.server.util import chunks, class_logger
+if typing.TYPE_CHECKING:
+    from lbry.wallet.server.daemon import LBCDaemon
+    from lbry.wallet.server.coin import Coin
+
+
+class Prefetcher:
+    """Prefetches blocks (in the forward direction only)."""
+
+    def __init__(self, daemon: 'LBCDaemon', coin: 'Coin', blocks_event: asyncio.Event):
+        self.logger = class_logger(__name__, self.__class__.__name__)
+        self.daemon = daemon
+        self.coin = coin
+        self.blocks_event = blocks_event
+        self.blocks = []
+        self.caught_up = False
+        # Access to fetched_height should be protected by the semaphore
+        self.fetched_height = None
+        self.semaphore = asyncio.Semaphore()
+        self.refill_event = asyncio.Event()
+        # The prefetched block cache size.  The min cache size has
+        # little effect on sync time.
+        self.cache_size = 0
+        self.min_cache_size = 10 * 1024 * 1024
+        # This makes the first fetch be 10 blocks
+        self.ave_size = self.min_cache_size // 10
+        self.polling_delay = 0.5
+
+    async def main_loop(self, bp_height):
+        """Loop forever polling for more blocks."""
+        await self.reset_height(bp_height)
+        try:
+            while True:
+                # Sleep a while if there is nothing to prefetch
+                await self.refill_event.wait()
+                if not await self._prefetch_blocks():
+                    await asyncio.sleep(self.polling_delay)
+        finally:
+            self.logger.info("block pre-fetcher is shutting down")
+
+    def get_prefetched_blocks(self):
+        """Called by block processor when it is processing queued blocks."""
+        blocks = self.blocks
+        self.blocks = []
+        self.cache_size = 0
+        self.refill_event.set()
+        return blocks
+
+    async def reset_height(self, height):
+        """Reset to prefetch blocks from the block processor's height.
+
+        Used in blockchain reorganisations.  This coroutine can be
+        called asynchronously to the _prefetch_blocks coroutine so we
+        must synchronize with a semaphore.
+        """
+        async with self.semaphore:
+            self.blocks.clear()
+            self.cache_size = 0
+            self.fetched_height = height
+            self.refill_event.set()
+
+        daemon_height = await self.daemon.height()
+        behind = daemon_height - height
+        if behind > 0:
+            self.logger.info(f'catching up to daemon height {daemon_height:,d} '
+                             f'({behind:,d} blocks behind)')
+        else:
+            self.logger.info(f'caught up to daemon height {daemon_height:,d}')
+
+    async def _prefetch_blocks(self):
+        """Prefetch some blocks and put them on the queue.
+
+        Repeats until the queue is full or caught up.
+        """
+        daemon = self.daemon
+        daemon_height = await daemon.height()
+        async with self.semaphore:
+            while self.cache_size < self.min_cache_size:
+                # Try and catch up all blocks but limit to room in cache.
+                # Constrain fetch count to between 0 and 500 regardless;
+                # testnet can be lumpy.
+                cache_room = self.min_cache_size // self.ave_size
+                count = min(daemon_height - self.fetched_height, cache_room)
+                count = min(500, max(count, 0))
+                if not count:
+                    self.caught_up = True
+                    return False
+
+                first = self.fetched_height + 1
+                hex_hashes = await daemon.block_hex_hashes(first, count)
+                if self.caught_up:
+                    self.logger.info('new block height {:,d} hash {}'
+                                     .format(first + count-1, hex_hashes[-1]))
+                blocks = await daemon.raw_blocks(hex_hashes)
+
+                assert count == len(blocks)
+
+                # Special handling for genesis block
+                if first == 0:
+                    blocks[0] = self.coin.genesis_block(blocks[0])
+                    self.logger.info(f'verified genesis block with hash {hex_hashes[0]}')
+
+                # Update our recent average block size estimate
+                size = sum(len(block) for block in blocks)
+                if count >= 10:
+                    self.ave_size = size // count
+                else:
+                    self.ave_size = (size + (10 - count) * self.ave_size) // 10
+
+                self.blocks.extend(blocks)
+                self.cache_size += size
+                self.fetched_height += count
+                self.blocks_event.set()
+
+        self.refill_event.clear()
+        return True

lbry/wallet/server/script.py

@@ -0,0 +1,289 @@
+# Copyright (c) 2016-2017, Neil Booth
+#
+# All rights reserved.
+#
+# The MIT License (MIT)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+# and warranty status of this software.
+
+"""Script-related classes and functions."""
+
+
+from collections import namedtuple
+
+from lbry.wallet.server.util import unpack_le_uint16_from, unpack_le_uint32_from, \
+    pack_le_uint16, pack_le_uint32
+
+
+class EnumError(Exception):
+    pass
+
+
+class Enumeration:
+
+    def __init__(self, name, enumList):
+        self.__doc__ = name
+
+        lookup = {}
+        reverseLookup = {}
+        i = 0
+        uniqueNames = set()
+        uniqueValues = set()
+        for x in enumList:
+            if isinstance(x, tuple):
+                x, i = x
+            if not isinstance(x, str):
+                raise EnumError(f"enum name {x} not a string")
+            if not isinstance(i, int):
+                raise EnumError(f"enum value {i} not an integer")
+            if x in uniqueNames:
+                raise EnumError(f"enum name {x} not unique")
+            if i in uniqueValues:
+                raise EnumError(f"enum value {i} not unique")
+            uniqueNames.add(x)
+            uniqueValues.add(i)
+            lookup[x] = i
+            reverseLookup[i] = x
+            i = i + 1
+        self.lookup = lookup
+        self.reverseLookup = reverseLookup
+
+    def __getattr__(self, attr):
+        result = self.lookup.get(attr)
+        if result is None:
+            raise AttributeError(f'enumeration has no member {attr}')
+        return result
+
+    def whatis(self, value):
+        return self.reverseLookup[value]
+
+
+class ScriptError(Exception):
+    """Exception used for script errors."""
+
+
+OpCodes = Enumeration("Opcodes", [
+    ("OP_0", 0), ("OP_PUSHDATA1", 76),
+    "OP_PUSHDATA2", "OP_PUSHDATA4", "OP_1NEGATE",
+    "OP_RESERVED",
+    "OP_1", "OP_2", "OP_3", "OP_4", "OP_5", "OP_6", "OP_7", "OP_8",
+    "OP_9", "OP_10", "OP_11", "OP_12", "OP_13", "OP_14", "OP_15", "OP_16",
+    "OP_NOP", "OP_VER", "OP_IF", "OP_NOTIF", "OP_VERIF", "OP_VERNOTIF",
+    "OP_ELSE", "OP_ENDIF", "OP_VERIFY", "OP_RETURN",
+    "OP_TOALTSTACK", "OP_FROMALTSTACK", "OP_2DROP", "OP_2DUP", "OP_3DUP",
+    "OP_2OVER", "OP_2ROT", "OP_2SWAP", "OP_IFDUP", "OP_DEPTH", "OP_DROP",
+    "OP_DUP", "OP_NIP", "OP_OVER", "OP_PICK", "OP_ROLL", "OP_ROT",
+    "OP_SWAP", "OP_TUCK",
+    "OP_CAT", "OP_SUBSTR", "OP_LEFT", "OP_RIGHT", "OP_SIZE",
+    "OP_INVERT", "OP_AND", "OP_OR", "OP_XOR", "OP_EQUAL", "OP_EQUALVERIFY",
+    "OP_RESERVED1", "OP_RESERVED2",
+    "OP_1ADD", "OP_1SUB", "OP_2MUL", "OP_2DIV", "OP_NEGATE", "OP_ABS",
+    "OP_NOT", "OP_0NOTEQUAL", "OP_ADD", "OP_SUB", "OP_MUL", "OP_DIV", "OP_MOD",
+    "OP_LSHIFT", "OP_RSHIFT", "OP_BOOLAND", "OP_BOOLOR", "OP_NUMEQUAL",
+    "OP_NUMEQUALVERIFY", "OP_NUMNOTEQUAL", "OP_LESSTHAN", "OP_GREATERTHAN",
+    "OP_LESSTHANOREQUAL", "OP_GREATERTHANOREQUAL", "OP_MIN", "OP_MAX",
+    "OP_WITHIN",
+    "OP_RIPEMD160", "OP_SHA1", "OP_SHA256", "OP_HASH160", "OP_HASH256",
+    "OP_CODESEPARATOR", "OP_CHECKSIG", "OP_CHECKSIGVERIFY", "OP_CHECKMULTISIG",
+    "OP_CHECKMULTISIGVERIFY",
+    "OP_NOP1",
+    "OP_CHECKLOCKTIMEVERIFY", "OP_CHECKSEQUENCEVERIFY"
+])
+
+
+# Paranoia to make it hard to create bad scripts
+assert OpCodes.OP_DUP == 0x76
+assert OpCodes.OP_HASH160 == 0xa9
+assert OpCodes.OP_EQUAL == 0x87
+assert OpCodes.OP_EQUALVERIFY == 0x88
+assert OpCodes.OP_CHECKSIG == 0xac
+assert OpCodes.OP_CHECKMULTISIG == 0xae
+
+
+def _match_ops(ops, pattern):
+    if len(ops) != len(pattern):
+        return False
+    for op, pop in zip(ops, pattern):
+        if pop != op:
+            # -1 means 'data push', whose op is an (op, data) tuple
+            if pop == -1 and isinstance(op, tuple):
+                continue
+            return False
+
+    return True
+
+
+class ScriptPubKey:
+    """A class for handling a tx output script that gives conditions
+    necessary for spending.
+    """
+
+    TO_ADDRESS_OPS = [OpCodes.OP_DUP, OpCodes.OP_HASH160, -1,
+                      OpCodes.OP_EQUALVERIFY, OpCodes.OP_CHECKSIG]
+    TO_P2SH_OPS = [OpCodes.OP_HASH160, -1, OpCodes.OP_EQUAL]
+    TO_PUBKEY_OPS = [-1, OpCodes.OP_CHECKSIG]
+
+    PayToHandlers = namedtuple('PayToHandlers', 'address script_hash pubkey '
+                               'unspendable strange')
+
+    @classmethod
+    def pay_to(cls, handlers, script):
+        """Parse a script, invoke the appropriate handler and
+        return the result.
+
+        One of the following handlers is invoked:
+           handlers.address(hash160)
+           handlers.script_hash(hash160)
+           handlers.pubkey(pubkey)
+           handlers.unspendable()
+           handlers.strange(script)
+        """
+        try:
+            ops = Script.get_ops(script)
+        except ScriptError:
+            return handlers.unspendable()
+
+        match = _match_ops
+
+        if match(ops, cls.TO_ADDRESS_OPS):
+            return handlers.address(ops[2][-1])
+        if match(ops, cls.TO_P2SH_OPS):
+            return handlers.script_hash(ops[1][-1])
+        if match(ops, cls.TO_PUBKEY_OPS):
+            return handlers.pubkey(ops[0][-1])
+        if ops and ops[0] == OpCodes.OP_RETURN:
+            return handlers.unspendable()
+        return handlers.strange(script)
+
+    @classmethod
+    def P2SH_script(cls, hash160):
+        return (bytes([OpCodes.OP_HASH160])
+                + Script.push_data(hash160)
+                + bytes([OpCodes.OP_EQUAL]))
+
+    @classmethod
+    def P2PKH_script(cls, hash160):
+        return (bytes([OpCodes.OP_DUP, OpCodes.OP_HASH160])
+                + Script.push_data(hash160)
+                + bytes([OpCodes.OP_EQUALVERIFY, OpCodes.OP_CHECKSIG]))
+
+    @classmethod
+    def validate_pubkey(cls, pubkey, req_compressed=False):
+        if isinstance(pubkey, (bytes, bytearray)):
+            if len(pubkey) == 33 and pubkey[0] in (2, 3):
+                return  # Compressed
+            if len(pubkey) == 65 and pubkey[0] == 4:
+                if not req_compressed:
+                    return
+                raise PubKeyError('uncompressed pubkeys are invalid')
+        raise PubKeyError(f'invalid pubkey {pubkey}')
+
+    @classmethod
+    def pubkey_script(cls, pubkey):
+        cls.validate_pubkey(pubkey)
+        return Script.push_data(pubkey) + bytes([OpCodes.OP_CHECKSIG])
+
+    @classmethod
+    def multisig_script(cls, m, pubkeys):
+        """Returns the script for a pay-to-multisig transaction."""
+        n = len(pubkeys)
+        if not 1 <= m <= n <= 15:
+            raise ScriptError(f'{m:d} of {n:d} multisig script not possible')
+        for pubkey in pubkeys:
+            cls.validate_pubkey(pubkey, req_compressed=True)
+        # See https://bitcoin.org/en/developer-guide
+        # 2 of 3 is: OP_2 pubkey1 pubkey2 pubkey3 OP_3 OP_CHECKMULTISIG
+        return (bytes([OP_1 + m - 1])
+                + b''.join(cls.push_data(pubkey) for pubkey in pubkeys)
+                + bytes([OP_1 + n - 1, OP_CHECK_MULTISIG]))
+
+
+class Script:
+
+    @classmethod
+    def get_ops(cls, script):
+        ops = []
+
+        # The unpacks or script[n] below throw on truncated scripts
+        try:
+            n = 0
+            while n < len(script):
+                op = script[n]
+                n += 1
+
+                if op <= OpCodes.OP_PUSHDATA4:
+                    # Raw bytes follow
+                    if op < OpCodes.OP_PUSHDATA1:
+                        dlen = op
+                    elif op == OpCodes.OP_PUSHDATA1:
+                        dlen = script[n]
+                        n += 1
+                    elif op == OpCodes.OP_PUSHDATA2:
+                        dlen, = unpack_le_uint16_from(script[n: n + 2])
+                        n += 2
+                    else:
+                        dlen, = unpack_le_uint32_from(script[n: n + 4])
+                        n += 4
+                    if n + dlen > len(script):
+                        raise IndexError
+                    op = (op, script[n:n + dlen])
+                    n += dlen
+
+                ops.append(op)
+        except Exception:
+            # Truncated script; e.g. tx_hash
+            # ebc9fa1196a59e192352d76c0f6e73167046b9d37b8302b6bb6968dfd279b767
+            raise ScriptError('truncated script')
+
+        return ops
+
+    @classmethod
+    def push_data(cls, data):
+        """Returns the opcodes to push the data on the stack."""
+        assert isinstance(data, (bytes, bytearray))
+
+        n = len(data)
+        if n < OpCodes.OP_PUSHDATA1:
+            return bytes([n]) + data
+        if n < 256:
+            return bytes([OpCodes.OP_PUSHDATA1, n]) + data
+        if n < 65536:
+            return bytes([OpCodes.OP_PUSHDATA2]) + pack_le_uint16(n) + data
+        return bytes([OpCodes.OP_PUSHDATA4]) + pack_le_uint32(n) + data
+
+    @classmethod
+    def opcode_name(cls, opcode):
+        if OpCodes.OP_0 < opcode < OpCodes.OP_PUSHDATA1:
+            return f'OP_{opcode:d}'
+        try:
+            return OpCodes.whatis(opcode)
+        except KeyError:
+            return f'OP_UNKNOWN:{opcode:d}'
+
+    @classmethod
+    def dump(cls, script):
+        opcodes, datas = cls.get_ops(script)
+        for opcode, data in zip(opcodes, datas):
+            name = cls.opcode_name(opcode)
+            if data is None:
+                print(name)
+            else:
+                print(f'{name} {data.hex()} ({len(data):d} bytes)')