diff options
Diffstat (limited to 'synapse/storage')
| -rw-r--r-- | synapse/storage/databases/main/__init__.py | 4 | ||||
| -rw-r--r-- | synapse/storage/databases/main/events_forward_extremities.py | 101 |
2 files changed, 104 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/__init__.py b/synapse/storage/databases/main/__init__.py index ae561a2da3..5d0845588c 100644 --- a/synapse/storage/databases/main/__init__.py +++ b/synapse/storage/databases/main/__init__.py @@ -1,7 +1,7 @@ # -*- coding: utf-8 -*- # Copyright 2014-2016 OpenMarket Ltd # Copyright 2018 New Vector Ltd -# Copyright 2019 The Matrix.org Foundation C.I.C. +# Copyright 2019-2021 The Matrix.org Foundation C.I.C. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -43,6 +43,7 @@ from .end_to_end_keys import EndToEndKeyStore from .event_federation import EventFederationStore from .event_push_actions import EventPushActionsStore from .events_bg_updates import EventsBackgroundUpdatesStore +from .events_forward_extremities import EventForwardExtremitiesStore from .filtering import FilteringStore from .group_server import GroupServerStore from .keys import KeyStore @@ -118,6 +119,7 @@ class DataStore( UIAuthStore, CacheInvalidationWorkerStore, ServerMetricsStore, + EventForwardExtremitiesStore, ): def __init__(self, database: DatabasePool, db_conn, hs): self.hs = hs diff --git a/synapse/storage/databases/main/events_forward_extremities.py b/synapse/storage/databases/main/events_forward_extremities.py new file mode 100644 index 0000000000..84aaa919fb --- /dev/null +++ b/synapse/storage/databases/main/events_forward_extremities.py @@ -0,0 +1,101 @@ +# -*- coding: utf-8 -*- +# Copyright 2021 The Matrix.org Foundation C.I.C. +# +# 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 Dict, List + +from synapse.api.errors import SynapseError +from synapse.storage._base import SQLBaseStore + +logger = logging.getLogger(__name__) + + +class EventForwardExtremitiesStore(SQLBaseStore): + async def delete_forward_extremities_for_room(self, room_id: str) -> int: + """Delete any extra forward extremities for a room. + + Invalidates the "get_latest_event_ids_in_room" cache if any forward + extremities were deleted. + + Returns count deleted. + """ + + def delete_forward_extremities_for_room_txn(txn): + # First we need to get the event_id to not delete + sql = """ + SELECT event_id FROM event_forward_extremities + INNER JOIN events USING (room_id, event_id) + WHERE room_id = ? + ORDER BY stream_ordering DESC + LIMIT 1 + """ + txn.execute(sql, (room_id,)) + rows = txn.fetchall() + try: + event_id = rows[0][0] + logger.debug( + "Found event_id %s as the forward extremity to keep for room %s", + event_id, + room_id, + ) + except KeyError: + msg = "No forward extremity event found for room %s" % room_id + logger.warning(msg) + raise SynapseError(400, msg) + + # Now delete the extra forward extremities + sql = """ + DELETE FROM event_forward_extremities + WHERE event_id != ? AND room_id = ? + """ + + txn.execute(sql, (event_id, room_id)) + logger.info( + "Deleted %s extra forward extremities for room %s", + txn.rowcount, + room_id, + ) + + if txn.rowcount > 0: + # Invalidate the cache + self._invalidate_cache_and_stream( + txn, self.get_latest_event_ids_in_room, (room_id,), + ) + + return txn.rowcount + + return await self.db_pool.runInteraction( + "delete_forward_extremities_for_room", + delete_forward_extremities_for_room_txn, + ) + + async def get_forward_extremities_for_room(self, room_id: str) -> List[Dict]: + """Get list of forward extremities for a room.""" + + def get_forward_extremities_for_room_txn(txn): + sql = """ + SELECT event_id, state_group, depth, received_ts + FROM event_forward_extremities + NATURAL JOIN event_to_state_groups + NATURAL JOIN events + WHERE room_id = ? + """ + + txn.execute(sql, (room_id,)) + return self.db_pool.cursor_to_dict(txn) + + return await self.db_pool.runInteraction( + "get_forward_extremities_for_room", get_forward_extremities_for_room_txn, + ) |