forked-synapse/synapse/replication/slave/storage/presence.py
Erik Johnston c66a06ac6b Move storage classes into a main "data store".
This is in preparation for having multiple data stores that offer
different functionality, e.g. splitting out state or event storage.
2019-10-21 16:05:06 +01:00

61 lines
2.4 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.
from synapse.storage import DataStore
from synapse.storage.data_stores.main.presence import PresenceStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
from ._base import BaseSlavedStore, __func__
from ._slaved_id_tracker import SlavedIdTracker
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 = __func__(DataStore._get_active_presence)
take_presence_startup_info = __func__(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 stream_positions(self):
result = super(SlavedPresenceStore, self).stream_positions()
if self.hs.config.use_presence:
position = self._presence_id_gen.get_current_token()
result["presence"] = position
return result
def process_replication_rows(self, stream_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(SlavedPresenceStore, self).process_replication_rows(
stream_name, token, rows
)