Merge pull request #3039 from lbryio/fwss_fix_resolve

Include enough information in resolve protobuf so its possible to verify signatures

lbry/blockchain/database.py

@@ -16,7 +16,9 @@ FILES = [
 
 def make_short_url(r):
     try:
-        return f'{normalize_name(r["name"].decode())}#{r["shortestID"] or r["claimID"][::-1].hex()[0]}'
+        # TODO: we describe it as normalized but the old SDK didnt do that
+        name = r["name"].decode().replace("\x00", "")
+        return f'{name}#{r["shortestID"] or r["claimID"][::-1].hex()[0]}'
     except UnicodeDecodeError:
         # print(f'failed making short url due to name parse error for claim_id: {r["claimID"][::-1].hex()}')
         return "INVALID NAME"

lbry/blockchain/script.py

@@ -4,7 +4,10 @@ from binascii import hexlify
 from collections import namedtuple
 
 from .bcd_data_stream import BCDataStream
-from .util import subclass_tuple
+
+
+def subclass_tuple(name, base):
+    return type(name, (base,), {'__slots__': ()})
 
 
 # bitcoin opcodes

lbry/blockchain/sync/claims.py

@@ -8,7 +8,8 @@ from lbry.db.queries.txio import (
     minimum_txo_columns, row_to_txo,
     where_unspent_txos, where_claims_with_changed_supports,
     count_unspent_txos, where_channels_with_changed_content,
-    where_abandoned_claims, count_channels_with_changed_content
+    where_abandoned_claims, count_channels_with_changed_content,
+    where_claims_with_changed_reposts,
 )
 from lbry.db.query_context import ProgressContext, event_emitter
 from lbry.db.tables import TX, TXO, Claim, Support, pg_add_claim_and_tag_constraints_and_indexes
@@ -56,6 +57,17 @@ def staked_support_count_calc(other):
     )
 
 
+def reposted_claim_count_calc(other):
+    repost = TXO.alias('repost')
+    return (
+        select(func.coalesce(func.count(repost.c.reposted_claim_hash), 0))
+        .where(
+            (repost.c.reposted_claim_hash == other.c.claim_hash) &
+            (repost.c.spent_height == 0)
+        ).scalar_subquery()
+    )
+
+
 def make_label(action, blocks):
     if blocks[0] == blocks[-1]:
         return f"{action} {blocks[0]:>6}"
@@ -73,6 +85,7 @@ def select_claims_for_saving(
         *minimum_txo_columns, TXO.c.claim_hash,
         staked_support_amount_calc(TXO).label('staked_support_amount'),
         staked_support_count_calc(TXO).label('staked_support_count'),
+        reposted_claim_count_calc(TXO).label('reposted_count'),
         TXO.c.signature, TXO.c.signature_digest,
         case([(
             TXO.c.channel_hash.isnot(None),
@@ -95,6 +108,7 @@ def row_to_claim_for_saving(row) -> Tuple[Output, dict]:
     return row_to_txo(row), {
         'staked_support_amount': int(row.staked_support_amount),
         'staked_support_count': int(row.staked_support_count),
+        'reposted_count': int(row.reposted_count),
         'signature': row.signature,
         'signature_digest': row.signature_digest,
         'channel_public_key': row.channel_public_key
@@ -237,6 +251,18 @@ def update_stakes(blocks: Tuple[int, int], claims: int, p: ProgressContext):
     p.step(result.rowcount)
 
 
+@event_emitter("blockchain.sync.claims.reposts", "claims")
+def update_reposts(blocks: Tuple[int, int], claims: int, p: ProgressContext):
+    p.start(claims)
+    sql = (
+        Claim.update()
+        .where(where_claims_with_changed_reposts(blocks))
+        .values(reposted_count=reposted_claim_count_calc(Claim))
+    )
+    result = p.ctx.execute(sql)
+    p.step(result.rowcount)
+
+
 @event_emitter("blockchain.sync.claims.channels", "channels")
 def update_channel_stats(blocks: Tuple[int, int], initial_sync: int, p: ProgressContext):
     update_sql = Claim.update().values(

lbry/blockchain/sync/synchronizer.py

@@ -217,6 +217,9 @@ class BlockchainSync(Sync):
     async def count_claims_with_changed_supports(self, blocks) -> int:
         return await self.db.run(q.count_claims_with_changed_supports, blocks)
 
+    async def count_claims_with_changed_reposts(self, blocks) -> int:
+        return await self.db.run(q.count_claims_with_changed_reposts, blocks)
+
     async def count_channels_with_changed_content(self, blocks) -> int:
         return await self.db.run(q.count_channels_with_changed_content, blocks)
 
@@ -226,13 +229,13 @@ class BlockchainSync(Sync):
         )
 
     async def sync_claims(self, blocks) -> bool:
-        delete_claims = takeovers = claims_with_changed_supports = 0
+        delete_claims = takeovers = claims_with_changed_supports = claims_with_changed_reposts = 0
         initial_sync = not await self.db.has_claims()
         with Progress(self.db.message_queue, CLAIMS_INIT_EVENT) as p:
             if initial_sync:
                 total, batches = await self.distribute_unspent_txos(CLAIM_TYPE_CODES)
             elif blocks:
-                p.start(4)
+                p.start(5)
                 # 1. content claims to be inserted or updated
                 total = await self.count_unspent_txos(
                     CLAIM_TYPE_CODES, blocks, missing_or_stale_in_claims_table=True
@@ -247,6 +250,10 @@ class BlockchainSync(Sync):
                 claims_with_changed_supports = await self.count_claims_with_changed_supports(blocks)
                 total += claims_with_changed_supports
                 p.step()
+                # 4. claims to be updated with new repost totals
+                claims_with_changed_reposts = await self.count_claims_with_changed_reposts(blocks)
+                total += claims_with_changed_reposts
+                p.step()
                 # 5. claims to be updated due to name takeovers
                 takeovers = await self.count_takeovers(blocks)
                 total += takeovers
@@ -270,6 +277,8 @@ class BlockchainSync(Sync):
                 await self.db.run(claim_phase.update_takeovers, blocks, takeovers)
             if claims_with_changed_supports:
                 await self.db.run(claim_phase.update_stakes, blocks, claims_with_changed_supports)
+            if claims_with_changed_reposts:
+                await self.db.run(claim_phase.update_reposts, blocks, claims_with_changed_reposts)
             if initial_sync:
                 await self.db.run(claim_phase.claims_constraints_and_indexes)
             else:

lbry/blockchain/util.py

@@ -16,10 +16,6 @@ class ReadOnlyList(Sequence[T]):
         return len(self.lst)
 
 
-def subclass_tuple(name, base):
-    return type(name, (base,), {'__slots__': ()})
-
-
 class ArithUint256:
     # https://github.com/bitcoin/bitcoin/blob/master/src/arith_uint256.cpp
 

lbry/db/constants.py

@@ -53,7 +53,7 @@ SEARCH_INTEGER_PARAMS = {
     'height', 'creation_height', 'activation_height', 'expiration_height',
     'timestamp', 'creation_timestamp', 'duration', 'release_time', 'fee_amount',
     'tx_position', 'channel_join', 'reposted',
-    'amount', 'effective_amount', 'support_amount',
+    'amount', 'staked_amount', 'support_amount',
     'trending_group', 'trending_mixed',
     'trending_local', 'trending_global',
 }

lbry/db/queries/resolve.py

@@ -1,58 +1,63 @@
 import logging
 import itertools
-from operator import itemgetter
 from typing import List, Dict
 
 from lbry.schema.url import URL
 from lbry.schema.result import Outputs as ResultOutput
 from lbry.error import ResolveCensoredError
 from lbry.blockchain.transaction import Output
+from . import rows_to_txos
 
 from ..query_context import context
-from .search import search_claims
+from .search import select_claims
 
 
 log = logging.getLogger(__name__)
 
 
-def _get_referenced_rows(txo_rows: List[dict], censor_channels: List[bytes]):
+def resolve_claims(**constraints):
-    # censor = context().get_resolve_censor()
+    censor = context().get_resolve_censor()
-    repost_hashes = set(filter(None, map(itemgetter('reposted_claim_hash'), txo_rows)))
+    rows = context().fetchall(select_claims(**constraints))
+    return rows_to_txos(rows), censor
+
+
+def _get_referenced_rows(txo_rows: List[Output], censor_channels: List[bytes]):
+    repost_hashes = set(txo.reposted_claim.claim_hash for txo in txo_rows if txo.reposted_claim)
     channel_hashes = set(itertools.chain(
-        filter(None, map(itemgetter('channel_hash'), txo_rows)),
+        (txo.channel.claim_hash for txo in txo_rows if txo.channel),
         censor_channels
     ))
 
     reposted_txos = []
     if repost_hashes:
-        reposted_txos = search_claims(**{'claim.claim_hash__in': repost_hashes})
+        reposted_txos = resolve_claims(**{'claim.claim_hash__in': repost_hashes})
-        channel_hashes |= set(filter(None, map(itemgetter('channel_hash'), reposted_txos)))
+        if reposted_txos:
+            reposted_txos = reposted_txos[0]
+            channel_hashes |= set(txo.channel.claim_hash for txo in reposted_txos if txo.channel)
 
     channel_txos = []
     if channel_hashes:
-        channel_txos = search_claims(**{'claim.claim_hash__in': channel_hashes})
+        channel_txos = resolve_claims(**{'claim.claim_hash__in': channel_hashes})
+        channel_txos = channel_txos[0] if channel_txos else []
 
     # channels must come first for client side inflation to work properly
     return channel_txos + reposted_txos
 
 
 def protobuf_resolve(urls, **kwargs) -> str:
-    return ResultOutput.to_base64([resolve_url(raw_url) for raw_url in urls], [])
+    txo_rows = [resolve_url(raw_url) for raw_url in urls]
+    extra_txo_rows = _get_referenced_rows(
+        [txo_row for txo_row in txo_rows if isinstance(txo_row, Output)],
+        [txo.censor_hash for txo in txo_rows if isinstance(txo, ResolveCensoredError)]
+    )
+    return ResultOutput.to_base64(txo_rows, extra_txo_rows)
 
 
 def resolve(urls, **kwargs) -> Dict[str, Output]:
     return {url: resolve_url(url) for url in urls}
-    #txo_rows = [resolve_url(raw_url) for raw_url in urls]
-    #extra_txo_rows = _get_referenced_rows(
-    #    [txo for txo in txo_rows if isinstance(txo, dict)],
-    #    [txo.censor_hash for txo in txo_rows if isinstance(txo, ResolveCensoredError)]
-    #)
-    #return txo_rows, extra_txo_rows
 
 
 def resolve_url(raw_url):
-    censor = context().get_resolve_censor()
-
     try:
         url = URL.parse(raw_url)
     except ValueError as e:
@@ -66,13 +71,12 @@ def resolve_url(raw_url):
             q['is_controlling'] = True
         else:
             q['order_by'] = ['^creation_height']
-        #matches = search_claims(censor, **q, limit=1)
+        matches, censor = resolve_claims(**q, limit=1)
-        matches = search_claims(**q, limit=1)[0]
         if matches:
             channel = matches[0]
         elif censor.censored:
             return ResolveCensoredError(raw_url, next(iter(censor.censored)))
-        else:
+        elif not channel:
             return LookupError(f'Could not find channel in "{raw_url}".')
 
     if url.has_stream:
@@ -83,10 +87,11 @@ def resolve_url(raw_url):
             q['is_signature_valid'] = True
         elif set(q) == {'name'}:
             q['is_controlling'] = True
-        # matches = search_claims(censor, **q, limit=1)
+        matches, censor = resolve_claims(**q, limit=1)
-        matches = search_claims(**q, limit=1)[0]
         if matches:
-            return matches[0]
+            stream = matches[0]
+            stream.channel = channel
+            return stream
         elif censor.censored:
             return ResolveCensoredError(raw_url, next(iter(censor.censored)))
         else:

lbry/db/queries/search.py

@@ -32,6 +32,18 @@ BASE_SELECT_SUPPORT_COLUMNS = BASE_SELECT_TXO_COLUMNS + [
 ]
 
 
+def compat_layer(**constraints):
+    # for old sdk, to be removed later
+    replacements = {"effective_amount": "staked_amount"}
+    for old_key, new_key in replacements.items():
+        if old_key in constraints:
+            constraints[new_key] = constraints.pop(old_key)
+        order_by = constraints.get("order_by", [])
+        if old_key in order_by:
+            constraints["order_by"] = [order_key if order_key != old_key else new_key for order_key in order_by]
+    return constraints
+
+
 def select_supports(cols: List = None, **constraints) -> Select:
     if cols is None:
         cols = BASE_SELECT_SUPPORT_COLUMNS
@@ -63,6 +75,7 @@ BASE_SELECT_CLAIM_COLUMNS = BASE_SELECT_TXO_COLUMNS + [
     Claim.c.activation_height,
     Claim.c.takeover_height,
     Claim.c.creation_height,
+    Claim.c.expiration_height,
     Claim.c.is_controlling,
     Claim.c.channel_hash,
     Claim.c.reposted_count,
@@ -82,6 +95,7 @@ BASE_SELECT_CLAIM_COLUMNS = BASE_SELECT_TXO_COLUMNS + [
 
 
 def select_claims(cols: List = None, for_count=False, **constraints) -> Select:
+    constraints = compat_layer(**constraints)
     if cols is None:
         cols = BASE_SELECT_CLAIM_COLUMNS
     if 'order_by' in constraints:
@@ -123,7 +137,7 @@ def select_claims(cols: List = None, for_count=False, **constraints) -> Select:
         constraints['offset'] = int(constraints.pop('sequence')) - 1
         constraints['limit'] = 1
     if 'amount_order' in constraints:
-        constraints['order_by'] = 'effective_amount DESC'
+        constraints['order_by'] = 'staked_amount DESC'
         constraints['offset'] = int(constraints.pop('amount_order')) - 1
         constraints['limit'] = 1
 

lbry/db/queries/txio.py

@@ -193,6 +193,31 @@ def count_channels_with_changed_content(blocks: Optional[Tuple[int, int]]):
     return context().fetchone(sql)['total']
 
 
+def where_changed_repost_txos(blocks: Optional[Tuple[int, int]]):
+    return (
+        (TXO.c.txo_type == TXO_TYPES['repost']) & (
+            between(TXO.c.height, blocks[0], blocks[-1]) |
+            between(TXO.c.spent_height, blocks[0], blocks[-1])
+        )
+    )
+
+
+def where_claims_with_changed_reposts(blocks: Optional[Tuple[int, int]]):
+    return Claim.c.claim_hash.in_(
+        select(TXO.c.reposted_claim_hash).where(
+            where_changed_repost_txos(blocks)
+        )
+    )
+
+
+def count_claims_with_changed_reposts(blocks: Optional[Tuple[int, int]]):
+    sql = (
+        select(func.count(distinct(TXO.c.reposted_claim_hash)).label('total'))
+        .where(where_changed_repost_txos(blocks))
+    )
+    return context().fetchone(sql)['total']
+
+
 def select_transactions(cols, account_ids=None, **constraints):
     s: Select = select(*cols).select_from(TX)
     if not {'tx_hash', 'tx_hash__in'}.intersection(constraints):
@@ -372,7 +397,7 @@ META_ATTRS = (
     'activation_height', 'takeover_height', 'creation_height', 'staked_amount',
     'short_url', 'canonical_url', 'staked_support_amount', 'staked_support_count',
     'signed_claim_count', 'signed_support_count', 'is_signature_valid',
-    'reposted_count',
+    'reposted_count', 'expiration_height'
 )
 
 

lbry/db/query_context.py

@@ -476,6 +476,7 @@ class BulkLoader:
             'channel_hash': None,
             'signature': None,
             'signature_digest': None,
+            'reposted_claim_hash': None,
             'public_key': None,
             'public_key_hash': None
         }
@@ -488,6 +489,8 @@ class BulkLoader:
                     row['public_key_hash'] = self.ledger.address_to_hash160(
                         self.ledger.public_key_to_address(claim.channel.public_key_bytes)
                     )
+                elif claim.is_repost:
+                    row['reposted_claim_hash'] = claim.repost.reference.claim_hash
             else:
                 row['txo_type'] = TXO_TYPES['stream']
         elif txo.is_support:
@@ -511,7 +514,7 @@ class BulkLoader:
         return row
 
     def claim_to_rows(
-        self, txo: Output, staked_support_amount: int, staked_support_count: int,
+        self, txo: Output, staked_support_amount: int, staked_support_count: int, reposted_count: int,
         signature: bytes = None, signature_digest: bytes = None, channel_public_key: bytes = None,
     ) -> Tuple[dict, List]:
 
@@ -540,6 +543,7 @@ class BulkLoader:
             'fee_currency': None,
             # reposts
             'reposted_claim_hash': None,
+            'reposted_count': reposted_count,
             # signed claims
             'channel_hash': None,
             'is_signature_valid': None,

lbry/db/tables.py

@@ -133,6 +133,9 @@ TXO = Table(
     Column('signature', LargeBinary, nullable=True),
     Column('signature_digest', LargeBinary, nullable=True),
 
+    # reposts
+    Column('reposted_claim_hash', LargeBinary, nullable=True),
+
     # channels
     Column('public_key', LargeBinary, nullable=True),
     Column('public_key_hash', LargeBinary, nullable=True),
@@ -158,6 +161,13 @@ pg_add_txo_constraints_and_indexes = [
     f"INCLUDE (claim_hash) WHERE txo_type={TXO_TYPES['support']};",
     f"CREATE INDEX txo_spent_supports_by_height ON txo (spent_height DESC) "
     f"INCLUDE (claim_hash) WHERE txo_type={TXO_TYPES['support']};",
+    # for finding claims which need repost totals re-calculated in a block range
+    f"CREATE INDEX txo_added_reposts_by_height ON txo (height DESC) "
+    f"INCLUDE (reposted_claim_hash) WHERE txo_type={TXO_TYPES['repost']};",
+    f"CREATE INDEX txo_spent_reposts_by_height ON txo (spent_height DESC) "
+    f"INCLUDE (reposted_claim_hash) WHERE txo_type={TXO_TYPES['repost']};",
+    "CREATE INDEX txo_reposted_claim_hash ON txo (reposted_claim_hash)"
+    "WHERE reposted_claim_hash IS NOT NULL AND spent_height = 0;",
     "CREATE INDEX txo_height ON txo (height);",
 ]
 
@@ -209,7 +219,6 @@ Claim = Table(
     Column('description', Text, nullable=True),
 
     Column('claim_type', SmallInteger),
-    Column('claim_reposted_count', Integer, server_default='0'),
     Column('staked_support_count', Integer, server_default='0'),
     Column('staked_support_amount', BigInteger, server_default='0'),
 
@@ -221,8 +230,8 @@ Claim = Table(
     Column('duration', Integer, nullable=True),
 
     # reposts
-    Column('reposted_claim_hash', LargeBinary, nullable=True),
+    Column('reposted_claim_hash', LargeBinary, nullable=True),  # on claim doing the repost
-    Column('reposted_count', Integer, server_default='0'),
+    Column('reposted_count', Integer, server_default='0'),  # on claim being reposted
 
     # claims which are channels
     Column('signed_claim_count', Integer, server_default='0'),
@@ -255,6 +264,8 @@ pg_add_claim_and_tag_constraints_and_indexes = [
     # used to count()/sum() claims signed by channel
     "CREATE INDEX signed_content ON claim (channel_hash) "
     "INCLUDE (amount) WHERE is_signature_valid;",
+    # used to count()/sum() reposted claims
+    "CREATE INDEX reposted_content ON claim (reposted_claim_hash);",
     # basic tag indexes
     "ALTER TABLE tag ADD PRIMARY KEY (claim_hash, tag);",
     "CREATE INDEX tags ON tag (tag) INCLUDE (claim_hash);",

lbry/schema/result.py

@@ -1,7 +1,6 @@
 import base64
 import struct
 from typing import List
-from binascii import hexlify
 from itertools import chain
 
 from lbry.error import ResolveCensoredError
@@ -16,10 +15,10 @@ BLOCKED = ErrorMessage.Code.Name(ErrorMessage.BLOCKED)
 def set_reference(reference, claim_hash, rows):
     if claim_hash:
         for txo in rows:
-            if claim_hash == txo['claim_hash']:
+            if claim_hash == txo.claim_hash:
-                reference.tx_hash = txo['txo_hash'][:32]
+                reference.tx_hash = txo.tx_ref.hash
-                reference.nout = struct.unpack('<I', txo['txo_hash'][32:])[0]
+                reference.nout = txo.position
-                reference.height = txo['height']
+                reference.height = txo.spent_height
                 return
 
 
@@ -193,11 +192,11 @@ class Outputs:
         if txo.meta['canonical_url'] is not None:
             txo_message.claim.canonical_url = txo.meta['canonical_url']
         txo_message.claim.is_controlling = bool(txo.meta['takeover_height'])
-        #if txo['last_take_over_height'] is not None:
+        if txo_message.claim.is_controlling:
-        #    txo_message.claim.take_over_height = txo['last_take_over_height']
+            txo_message.claim.take_over_height = txo.meta['takeover_height']
         txo_message.claim.creation_height = txo.meta['creation_height']
         txo_message.claim.activation_height = txo.meta['activation_height']
-        #txo_message.claim.expiration_height = txo['expiration_height']
+        txo_message.claim.expiration_height = txo.meta['expiration_height']
         if txo.meta['signed_claim_count'] is not None:
             txo_message.claim.claims_in_channel = txo.meta['signed_claim_count']
         txo_message.claim.effective_amount = txo.meta['staked_amount']
@@ -206,5 +205,6 @@ class Outputs:
         #txo_message.claim.trending_mixed = txo['trending_mixed']
         #txo_message.claim.trending_local = txo['trending_local']
         #txo_message.claim.trending_global = txo['trending_global']
-        #set_reference(txo_message.claim.channel, txo['channel_hash'], extra_txo_rows)
+        if txo.channel:
+            set_reference(txo_message.claim.channel, txo.claim.signing_channel_hash, extra_txo_rows)
         #set_reference(txo_message.claim.repost, txo['reposted_claim_hash'], extra_txo_rows)

lbry/service/daemon.py

@@ -137,12 +137,16 @@ class Daemon:
         data = await request.json()
         params = data.get('params', {})
         method = getattr(self.api, data['method'])
-        result = await method(**params)
+        try:
-        encoded_result = jsonrpc_dumps_pretty(result, service=self.service)
+            result = await method(**params)
-        return Response(
+            encoded_result = jsonrpc_dumps_pretty(result, service=self.service)
-            text=encoded_result,
+            return Response(
-            content_type='application/json'
+                text=encoded_result,
-        )
+                content_type='application/json'
+            )
+        except Exception as e:
+            log.exception("RPC error")
+            raise e
 
     async def on_connect(self, request):
         web_socket = WebSocketManager()

lbry/testcase.py

@@ -792,7 +792,7 @@ class EventGenerator:
             yield from self.claims_main_start()
             yield from self.claims_insert(self.claims)
             if self.initial_sync:
-                yield from self.generate("blockchain.sync.claims.indexes", ("steps",), 0, None, (9,), (1,))
+                yield from self.generate("blockchain.sync.claims.indexes", ("steps",), 0, None, (10,), (1,))
             else:
                 yield from self.claims_takeovers(self.takeovers)
                 yield from self.claims_stakes()
@@ -920,12 +920,12 @@ class EventGenerator:
     def spends_steps(self):
         yield from self.generate(
             "blockchain.sync.spends.main", ("steps",), 0, None,
-            (17 if self.initial_sync else 5,),
+            (20 if self.initial_sync else 5,),
             (1,)
         )
 
     def claims_init(self):
-        yield from self.generate("blockchain.sync.claims.init", ("steps",), 0, None, (4,), (1,))
+        yield from self.generate("blockchain.sync.claims.init", ("steps",), 0, None, (5,), (1,))
 
     def claims_main_start(self):
         total = (

tests/integration/blockchain/test_blockchain.py

@@ -9,7 +9,8 @@ from distutils.dir_util import copy_tree, remove_tree
 
 from lbry import Config, Database, RegTestLedger, Transaction, Output, Input
 from lbry.crypto.base58 import Base58
-from lbry.schema.claim import Stream, Channel
+from lbry.schema.claim import Claim, Stream, Channel
+from lbry.schema.result import Outputs
 from lbry.schema.support import Support
 from lbry.error import LbrycrdEventSubscriptionError, LbrycrdUnauthorizedError
 from lbry.blockchain.lbrycrd import Lbrycrd
@@ -114,10 +115,14 @@ class SyncingBlockchainTestCase(BasicBlockchainTestCase):
 
     async def create_claim(
             self, title='', amount='0.01', name=None, author='', desc='',
-            claim_id_startswith='', sign=None, is_channel=False) -> str:
+            claim_id_startswith='', sign=None, is_channel=False, repost=None) -> str:
         name = name or ('@foo' if is_channel else 'foo')
         if not claim_id_startswith and sign is None and not is_channel:
-            claim = Stream().update(title=title, author=author, description=desc).claim
+            if repost:
+                claim = Claim()
+                claim.repost.reference.claim_id = repost
+            else:
+                claim = Stream().update(title=title, author=author, description=desc).claim
             return await self.chain.claim_name(
                 name, hexlify(claim.to_bytes()).decode(), amount
             )
@@ -400,11 +405,7 @@ class TestMultiBlockFileSyncing(BasicBlockchainTestCase):
             signed = await self.chain.sign_raw_transaction_with_wallet(funded['hex'])
             await self.chain.send_raw_transaction(signed['hex'])
             tx = Transaction(unhexlify(signed['hex']))
-            claim = None
+            claim = self.find_claim_txo(tx)
-            for txo in tx.outputs:
-                if txo.is_claim:
-                    claim = txo
-                    break
             support_tx = Transaction().add_outputs([
                 Output.pay_support_pubkey_hash(CENT, claim.claim_name, claim.claim_id, address),
             ])
@@ -415,7 +416,7 @@ class TestMultiBlockFileSyncing(BasicBlockchainTestCase):
 
         # supports \w data aren't supported until block 350, fast forward a little
         await self.chain.generate(60)
-        claim = tx.outputs[0]
+        claim = self.find_claim_txo(tx)
         tx = Transaction().add_outputs([
             Output.pay_support_pubkey_hash(CENT, claim.claim_name, claim.claim_id, address),
             Output.pay_support_data_pubkey_hash(
@@ -875,6 +876,22 @@ class TestGeneralBlockchainSync(SyncingBlockchainTestCase):
         self.assertEqual(0, r.meta['signed_claim_count'])  # channel2 lost abandoned claim
         self.assertEqual(0, r.meta['signed_support_count'])
 
+    async def test_reposts(self):
+        self.stream1 = await self.get_claim(await self.create_claim())
+        claim_id = self.stream1.claim_id
+
+        # in same block
+        self.stream2 = await self.get_claim(await self.create_claim(repost=claim_id))
+        await self.generate(1)
+        r, = await self.db.search_claims(claim_id=claim_id)
+        self.assertEqual(1, r.meta['reposted_count'])
+
+        # in subsequent block
+        self.stream3 = await self.get_claim(await self.create_claim(repost=claim_id))
+        await self.generate(1)
+        r, = await self.db.search_claims(claim_id=claim_id)
+        self.assertEqual(2, r.meta['reposted_count'])
+
     async def resolve_to_claim_id(self, url):
         return (await self.db.resolve([url]))[url].claim_id
 
@@ -897,6 +914,73 @@ class TestGeneralBlockchainSync(SyncingBlockchainTestCase):
         self.assertEqual(stream_c.claim_id, await self.resolve_to_claim_id("@foo#a/foo#c"))
         self.assertEqual(stream_cd.claim_id, await self.resolve_to_claim_id("@foo#ab/foo#cd"))
 
+    async def test_resolve_protobuf_includes_enough_information_for_signature_validation(self):
+        chan_ab = await self.get_claim(
+            await self.create_claim(claim_id_startswith='ab', is_channel=True))
+        await self.create_claim(claim_id_startswith='cd', sign=chan_ab)
+        await self.generate(1)
+        resolutions = await self.db.protobuf_resolve(["@foo#ab/foo#cd"])
+        resolutions = Outputs.from_base64(resolutions)
+        txs = await self.db.get_transactions(tx_hash__in=[tx[0] for tx in resolutions.txs])
+        self.assertEqual(len(txs), 2)
+        resolutions = resolutions.inflate(txs)
+        claim = resolutions[0][0]
+        self.assertTrue(claim.is_signed_by(claim.channel, self.chain.ledger))
+
+    async def test_resolve_not_found(self):
+        await self.get_claim(await self.create_claim(claim_id_startswith='ab', is_channel=True))
+        await self.generate(1)
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["@foo#ab/notfound"]))
+        self.assertEqual(resolutions.txos[0].error.text, "Could not find claim at \"@foo#ab/notfound\".")
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["@notfound#ab/notfound"]))
+        self.assertEqual(resolutions.txos[0].error.text, "Could not find channel in \"@notfound#ab/notfound\".")
+
+    async def test_claim_search_effective_amount(self):
+        claim = await self.get_claim(await self.create_claim(claim_id_startswith='ab', is_channel=True, amount='0.42'))
+        await self.generate(1)
+        results = await self.db.search_claims(staked_amount=42000000)
+        self.assertEqual(claim.claim_id, results[0].claim_id)
+        # compat layer
+        results = await self.db.search_claims(effective_amount=42000000, amount_order=1, order_by=["effective_amount"])
+        self.assertEqual(claim.claim_id, results[0].claim_id)
+
+    async def test_meta_fields_are_translated_to_protobuf(self):
+        chan_ab = await self.get_claim(
+            await self.create_claim(claim_id_startswith='ab', is_channel=True))
+        await self.create_claim(claim_id_startswith='cd', sign=chan_ab)
+        await self.generate(1)
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["@foo#ab/foo#cd"]))
+        claim = resolutions.txos[0].claim
+        self.assertEqual(claim.effective_amount, 1000000)
+        self.assertEqual(claim.expiration_height, 602)
+        self.assertEqual(claim.take_over_height, 102)
+        self.assertTrue(claim.is_controlling)
+        # takeover
+        await self.create_claim(claim_id_startswith='ad', sign=chan_ab, amount='1.1')
+        await self.generate(1)
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["@foo#ab/foo#cd"]))
+        claim = resolutions.txos[0].claim
+        self.assertEqual(claim.take_over_height, 0)
+        self.assertFalse(claim.is_controlling)
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["@foo#ab/foo#ad"]))
+        claim = resolutions.txos[0].claim
+        self.assertEqual(claim.take_over_height, 103)
+        self.assertTrue(claim.is_controlling)
+
+    async def test_uris_and_uppercase(self):
+        # fixme: this is a bug but its how the old SDK expects it (non-normalized URIs)
+        # to be decided if we are going to ignore it or how its used today
+        chan_ab = await self.get_claim(
+            await self.create_claim(claim_id_startswith='ab', is_channel=True, name="@Chá"))
+        await self.create_claim(claim_id_startswith='cd', sign=chan_ab, name="Hortelã")
+        await self.generate(1)
+
+        resolutions = Outputs.from_base64(await self.db.protobuf_resolve(["Hortelã"]))
+        self.assertEqual(1, len(resolutions.txos))
+        claim = resolutions.txos[0].claim
+        self.assertEqual("@Chá#a/Hortelã#c", claim.canonical_url)
+        self.assertEqual("Hortelã#c", claim.short_url)
+
 
 class TestClaimtrieSync(SyncingBlockchainTestCase):
 

tests/unit/blockchain/test_transaction.py

@@ -1,4 +1,5 @@
 from unittest import TestCase
+from pickle import dumps
 from binascii import hexlify, unhexlify
 
 from lbry import Config, Ledger, Transaction
@@ -253,3 +254,24 @@ class TestTransactionSerialization(TestCase):
         txo = t.outputs[0]
         self.assertEqual(txo.script.template.name, 'pay_script_hash')
         self.assertEqual(txo.get_address(self.ledger), 'rVBhueRT9E8RPdVcpCdXV5gRiiXVjE6VD9')
+
+    def test_tx_with_claim_can_pickle(self):
+        # used to fail with this error:
+        # _pickle.PicklingError: Can't pickle <class 'lbry.blockchain.util.PUSH_SINGLE'>:
+        #   attribute lookup PUSH_SINGLE on lbry.blockchain.util failed
+        raw = unhexlify(
+            "01000000012433e1b327603843b083344dbae5306ff7927f87ebbc5ae9eb50856c5b53fd1d000000006a4"
+            "7304402201a91e1023d11c383a11e26bf8f9034087b15d8ada78fa565e0610455ffc8505e0220038a63a6"
+            "ecb399723d4f1f78a20ddec0a78bf8fb6c75e63e166ef780f3944fbf0121021810150a2e4b088ec51b20c"
+            "be1b335962b634545860733367824d5dc3eda767dffffffff028096980000000000fdff00b50463617473"
+            "4cdc080110011a7808011230080410011a084d616361726f6e6922002a003214416c6c207269676874732"
+            "072657365727665642e38004a0052005a001a42080110011a30add80aaf02559ba09853636a0658c42b72"
+            "7cb5bb4ba8acedb4b7fe656065a47a31878dbf9912135ddb9e13806cc1479d220a696d6167652f6a70656"
+            "72a5c080110031a404180cc0fa4d3839ee29cca866baed25fafb43fca1eb3b608ee889d351d3573d042c7"
+            "b83e2e643db0d8e062a04e6e9ae6b90540a2f95fe28638d0f18af4361a1c2214f73de93f4299fb32c32f9"
+            "49e02198a8e91101abd6d7576a914be16e4b0f9bd8f6d47d02b3a887049c36d3b84cb88ac0cd2520b0000"
+            "00001976a914f521178feb733a719964e1da4a9efb09dcc39cfa88ac00000000"
+        )
+        tx = Transaction(raw)
+        tx.outputs[0].script.values  # triggers parsing, needed to reproduce pickle error
+        dumps(tx)