es writer

lbry/wallet/server/block_processor.py

@@ -1582,7 +1582,7 @@ class BlockProcessor:
                     await self._first_caught_up()
                     self._caught_up_event.set()
             try:
-                await asyncio.wait_for(self.blocks_event.wait(), 0.25)
+                await asyncio.wait_for(self.blocks_event.wait(), 0.1)
             except asyncio.TimeoutError:
                 pass
             self.blocks_event.clear()

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/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/sync.py

@@ -1,138 +1,318 @@
 import os
-import argparse
+import time
+import signal
+import json
+import typing
+from collections import defaultdict
 import asyncio
 import logging
-from elasticsearch import AsyncElasticsearch
+from elasticsearch import AsyncElasticsearch, NotFoundError
 from elasticsearch.helpers import async_streaming_bulk
-from lbry.wallet.server.env import Env
-from lbry.wallet.server.leveldb import LevelDB
-from lbry.wallet.server.db.elasticsearch.search import SearchIndex, IndexVersionMismatch
-from lbry.wallet.server.db.elasticsearch.constants import ALL_FIELDS
+
+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
 
 
-async def get_recent_claims(env, index_name='claims', db=None):
-    log = logging.getLogger()
-    need_open = db is None
-    db = db or LevelDB(env)
+log = logging.getLogger()
+
+
+class ElasticWriter(BlockchainReader):
+    VERSION = 1
+
+    def __init__(self, env):
+        super().__init__(env, '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.warning("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):
+        for p in self._listeners:
+            p.send_height(height)
+            self.log.warning("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(None, 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:
-        if need_open:
-            db.open_db()
-        if db.es_sync_height == db.db_height or db.db_height <= 0:
-            return
-        if need_open:
-            await db.initialize_caches()
-        log.info(f"catching up ES ({db.es_sync_height}) to leveldb height: {db.db_height}")
-        cnt = 0
-        touched_claims = set()
-        deleted_claims = set()
-        for height in range(db.es_sync_height, db.db_height + 1):
-            touched_or_deleted = db.prefix_db.touched_or_deleted.get(height)
-            touched_claims.update(touched_or_deleted.touched_claims)
-            deleted_claims.update(touched_or_deleted.deleted_claims)
-            touched_claims.difference_update(deleted_claims)
+            template = await self.sync_client.indices.get_template(self.index)
+            return template[self.index]['version']
+        except NotFoundError:
+            return 0
 
-        for deleted in deleted_claims:
+    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
+
+    def delete_index(self):
+        return 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': index_name,
+                '_index': self.index,
                 '_op_type': 'delete',
                 '_id': deleted.hex()
             }
-        for touched in touched_claims:
-            claim = db.claim_producer(touched)
+        for touched in self._touched_claims:
+            claim = self.db.claim_producer(touched)
             if claim:
+                self.log.warning("send es %s %i", claim['claim_id'], claim['activation_height'])
                 yield {
                     'doc': {key: value for key, value in claim.items() if key in ALL_FIELDS},
                     '_id': claim['claim_id'],
-                    '_index': index_name,
+                    '_index': self.index,
                     '_op_type': 'update',
                     'doc_as_upsert': True
                 }
-                cnt += 1
-            else:
-                logging.warning("could not sync claim %s", touched.hex())
-            if cnt % 10000 == 0:
-                logging.info("%i claims sent to ES", cnt)
+        for claim_hash, notifications in self._trending.items():
+            self.log.warning("send es trending for %s", claim_hash.hex())
+            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
+                        ]
+                    }}
+                },
+            }
 
-        db.es_sync_height = db.db_height
-        db.write_db_state()
-        db.prefix_db.unsafe_commit()
-        db.assert_db_state()
+    def advance(self, height: int):
+        super().advance(height)
 
-        logging.info("finished sending %i claims to ES, deleted %i", cnt, len(deleted_claims))
-    finally:
-        if need_open:
-            db.close()
+        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.warning("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 get_all_claims(env, index_name='claims', db=None):
-    need_open = db is None
-    db = db or LevelDB(env)
-    if need_open:
-        db.open_db()
-        await db.initialize_caches()
-    logging.info("Fetching claims to send ES from leveldb")
-    try:
+    async def poll_for_changes(self):
+        await super().poll_for_changes()
         cnt = 0
-        async for claim in db.all_claims_producer():
-            yield {
-                'doc': {key: value for key, value in claim.items() if key in ALL_FIELDS},
-                '_id': claim['claim_id'],
-                '_index': index_name,
-                '_op_type': 'update',
-                'doc_as_upsert': True
-            }
+        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 cnt % 10000 == 0:
-                logging.info("sent %i claims to ES", cnt)
-    finally:
-        if need_open:
-            db.close()
-
-
-async def make_es_index_and_run_sync(env: Env, clients=32, force=False, db=None, index_name='claims'):
-    index = SearchIndex(env.es_index_prefix, elastic_host=env.elastic_host, elastic_port=env.elastic_port)
-    logging.info("ES sync host: %s:%i", env.elastic_host, env.elastic_port)
-    try:
-        created = await index.start()
-    except IndexVersionMismatch as err:
-        logging.info(
-            "dropping ES search index (version %s) for upgrade to version %s", err.got_version, err.expected_version
-        )
-        await index.delete_index()
-        await index.stop()
-        created = await index.start()
-    finally:
-        index.stop()
-
-    es = AsyncElasticsearch([{'host': env.elastic_host, 'port': env.elastic_port}])
-    if force or created:
-        claim_generator = get_all_claims(env, index_name=index_name, db=db)
-    else:
-        claim_generator = get_recent_claims(env, index_name=index_name, db=db)
-    try:
-        async for ok, item in async_streaming_bulk(es, claim_generator, request_timeout=600, raise_on_error=False):
                     if not ok:
-                logging.warning("indexing failed for an item: %s", item)
-        await es.indices.refresh(index=index_name)
+                        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.warning("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)
+
+    @property
+    def last_synced_height(self) -> int:
+        return self._last_wrote_height
+
+    async def start(self):
+        env = self.env
+        min_str, max_str = env.coin.SESSIONCLS.protocol_min_max_strings()
+
+        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):
+        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()
+
+    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:
-        await es.close()
-
-
-def run_elastic_sync():
-    logging.basicConfig(level=logging.INFO)
-    logging.getLogger('aiohttp').setLevel(logging.WARNING)
-    logging.getLogger('elasticsearch').setLevel(logging.WARNING)
-
-    logging.info('lbry.server starting')
-    parser = argparse.ArgumentParser(prog="lbry-hub-elastic-sync")
-    parser.add_argument("-c", "--clients", type=int, default=32)
-    parser.add_argument("-f", "--force", default=False, action='store_true')
-    Env.contribute_to_arg_parser(parser)
-    args = parser.parse_args()
-    env = Env.from_arg_parser(args)
-
-    if not os.path.exists(os.path.join(args.db_dir, 'lbry-leveldb')):
-        logging.info("DB path doesnt exist, nothing to sync to ES")
-        return
-
-    asyncio.run(make_es_index_and_run_sync(env, clients=args.clients, force=args.force))
+            loop.run_until_complete(self.stop())