46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2016 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import logging
|
|
from typing import Optional
|
|
|
|
from synapse.storage.database import DatabasePool
|
|
from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
|
|
from synapse.storage.engines import PostgresEngine
|
|
from synapse.storage.util.id_generators import MultiWriterIdGenerator
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class BaseSlavedStore(CacheInvalidationWorkerStore):
|
|
def __init__(self, database: DatabasePool, db_conn, hs):
|
|
super().__init__(database, db_conn, hs)
|
|
if isinstance(self.database_engine, PostgresEngine):
|
|
self._cache_id_gen = MultiWriterIdGenerator(
|
|
db_conn,
|
|
database,
|
|
stream_name="caches",
|
|
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",
|
|
writers=[],
|
|
) # type: Optional[MultiWriterIdGenerator]
|
|
else:
|
|
self._cache_id_gen = None
|
|
|
|
self.hs = hs
|