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Add a slaved store for presence
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59
synapse/replication/slave/storage/presence.py
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59
synapse/replication/slave/storage/presence.py
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# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from ._base import BaseSlavedStore
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from ._slaved_id_tracker import SlavedIdTracker
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from synapse.util.caches.stream_change_cache import StreamChangeCache
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from synapse.storage import DataStore
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class SlavedPresenceStore(BaseSlavedStore):
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def __init__(self, db_conn, hs):
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super(SlavedPresenceStore, self).__init__(db_conn, hs)
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self._presence_id_gen = SlavedIdTracker(
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db_conn, "presence_stream", "stream_id",
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)
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self._presence_on_startup = self._get_active_presence(db_conn)
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self.presence_stream_cache = self.presence_stream_cache = StreamChangeCache(
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"PresenceStreamChangeCache", self._presence_id_gen.get_current_token()
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)
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_get_active_presence = DataStore._get_active_presence.__func__
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take_presence_startup_info = DataStore.take_presence_startup_info.__func__
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get_presence_for_users = DataStore.get_presence_for_users.__func__
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def get_current_presence_token(self):
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return self._presence_id_gen.get_current_token()
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def stream_positions(self):
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result = super(SlavedPresenceStore, self).stream_positions()
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position = self._presence_id_gen.get_current_token()
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result["presence"] = position
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return result
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def process_replication(self, result):
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stream = result.get("presence")
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if stream:
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self._presence_id_gen.advance(int(stream["position"]))
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for row in stream["rows"]:
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position, user_id = row[:2]
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self.presence_stream_cache.entity_has_changed(
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user_id, position
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)
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return super(SlavedPresenceStore, self).process_replication(result)
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@ -149,7 +149,7 @@ class DataStore(RoomMemberStore, RoomStore,
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"AccountDataAndTagsChangeCache", account_max,
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)
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self.__presence_on_startup = self._get_active_presence(db_conn)
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self._presence_on_startup = self._get_active_presence(db_conn)
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presence_cache_prefill, min_presence_val = self._get_cache_dict(
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db_conn, "presence_stream",
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@ -190,8 +190,8 @@ class DataStore(RoomMemberStore, RoomStore,
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super(DataStore, self).__init__(hs)
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def take_presence_startup_info(self):
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active_on_startup = self.__presence_on_startup
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self.__presence_on_startup = None
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active_on_startup = self._presence_on_startup
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self._presence_on_startup = None
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return active_on_startup
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def _get_active_presence(self, db_conn):
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