# -*- 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 ._base import BaseSlavedStore from ._slaved_id_tracker import SlavedIdTracker from synapse.util.caches.stream_change_cache import StreamChangeCache from synapse.storage import DataStore class SlavedPresenceStore(BaseSlavedStore): def __init__(self, db_conn, hs): super(SlavedPresenceStore, self).__init__(db_conn, hs) self._presence_id_gen = SlavedIdTracker( db_conn, "presence_stream", "stream_id", ) self._presence_on_startup = self._get_active_presence(db_conn) self.presence_stream_cache = self.presence_stream_cache = StreamChangeCache( "PresenceStreamChangeCache", self._presence_id_gen.get_current_token() ) _get_active_presence = DataStore._get_active_presence.__func__ take_presence_startup_info = DataStore.take_presence_startup_info.__func__ get_presence_for_users = DataStore.get_presence_for_users.__func__ def get_current_presence_token(self): return self._presence_id_gen.get_current_token() def stream_positions(self): result = super(SlavedPresenceStore, self).stream_positions() position = self._presence_id_gen.get_current_token() result["presence"] = position return result def process_replication(self, result): stream = result.get("presence") if stream: self._presence_id_gen.advance(int(stream["position"])) for row in stream["rows"]: position, user_id = row[:2] self.presence_stream_cache.entity_has_changed( user_id, position ) return super(SlavedPresenceStore, self).process_replication(result)