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Support any process writing to cache invalidation stream. (#7436)

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Erik Johnston 2020-05-07 13:51:08 +01:00 • committed by GitHub
parent 2929ce29d6
commit d7983b63a6
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26 changed files with 225 additions and 230 deletions
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50
synapse/replication/slave/storage/_base.py
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@ -18,14 +18,10 @@ from typing import Optional
import six
from synapse.storage.data_stores.main.cache import (
CURRENT_STATE_CACHE_NAME,
CacheInvalidationWorkerStore,
)
from synapse.storage.data_stores.main.cache import CacheInvalidationWorkerStore
from synapse.storage.database import Database
from synapse.storage.engines import PostgresEngine
from ._slaved_id_tracker import SlavedIdTracker
from synapse.storage.util.id_generators import MultiWriterIdGenerator
logger = logging.getLogger(__name__)
@ -41,40 +37,16 @@ class BaseSlavedStore(CacheInvalidationWorkerStore):
def __init__(self, database: Database, db_conn, hs):
super(BaseSlavedStore, self).__init__(database, db_conn, hs)
if isinstance(self.database_engine, PostgresEngine):
self._cache_id_gen = SlavedIdTracker(
db_conn, "cache_invalidation_stream", "stream_id"
) # type: Optional[SlavedIdTracker]
self._cache_id_gen = MultiWriterIdGenerator(
db_conn,
database,
instance_name=hs.get_instance_name(),
table="cache_invalidation_stream_by_instance",
instance_column="instance_name",
id_column="stream_id",
sequence_name="cache_invalidation_stream_seq",
) # type: Optional[MultiWriterIdGenerator]
else:
self._cache_id_gen = None
self.hs = hs
def get_cache_stream_token(self):
if self._cache_id_gen:
return self._cache_id_gen.get_current_token()
else:
return 0
def process_replication_rows(self, stream_name, token, rows):
if stream_name == "caches":
if self._cache_id_gen:
self._cache_id_gen.advance(token)
for row in rows:
if row.cache_func == CURRENT_STATE_CACHE_NAME:
if row.keys is None:
raise Exception(
"Can't send an 'invalidate all' for current state cache"
)
room_id = row.keys[0]
members_changed = set(row.keys[1:])
self._invalidate_state_caches(room_id, members_changed)
else:
self._attempt_to_invalidate_cache(row.cache_func, row.keys)
def _invalidate_cache_and_stream(self, txn, cache_func, keys):
txn.call_after(cache_func.invalidate, keys)
txn.call_after(self._send_invalidation_poke, cache_func, keys)
def _send_invalidation_poke(self, cache_func, keys):
self.hs.get_tcp_replication().send_invalidate_cache(cache_func, keys)