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# -*- 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.
from synapse.storage import DataStore
from synapse.storage.data_stores.main.presence import PresenceStore
from synapse.storage.database import Database
from synapse.util.caches.stream_change_cache import StreamChangeCache
from ._base import BaseSlavedStore
from ._slaved_id_tracker import SlavedIdTracker
class SlavedPresenceStore(BaseSlavedStore):
def __init__(self, database: Database, db_conn, hs):
super(SlavedPresenceStore, self).__init__(database, db_conn, hs)
self._presence_id_gen = SlavedIdTracker(db_conn, "presence_stream", "stream_id")
self._presence_on_startup = self._get_active_presence(db_conn) # type: ignore
self.presence_stream_cache = StreamChangeCache(
"PresenceStreamChangeCache", self._presence_id_gen.get_current_token()
)
_get_active_presence = DataStore._get_active_presence
take_presence_startup_info = DataStore.take_presence_startup_info
_get_presence_for_user = PresenceStore.__dict__["_get_presence_for_user"]
get_presence_for_users = PresenceStore.__dict__["get_presence_for_users"]
def get_current_presence_token(self):
return self._presence_id_gen.get_current_token()
def process_replication_rows(self, stream_name, instance_name, token, rows):
if stream_name == "presence":
self._presence_id_gen.advance(token)
for row in rows:
self.presence_stream_cache.entity_has_changed(row.user_id, token)
self._get_presence_for_user.invalidate((row.user_id,))
return super().process_replication_rows(stream_name, instance_name, token, rows)
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