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During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
127 lines
4.3 KiB
Python
127 lines
4.3 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2021 The Matrix.org Foundation C.I.C.
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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import logging
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from typing import List, Optional, Tuple, cast
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from synapse.api.errors import SynapseError
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from synapse.storage.database import LoggingTransaction
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from synapse.storage.databases.main import CacheInvalidationWorkerStore
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from synapse.storage.databases.main.event_federation import EventFederationWorkerStore
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logger = logging.getLogger(__name__)
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class EventForwardExtremitiesStore(
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EventFederationWorkerStore,
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CacheInvalidationWorkerStore,
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):
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async def delete_forward_extremities_for_room(self, room_id: str) -> int:
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"""Delete any extra forward extremities for a room.
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Invalidates the "get_latest_event_ids_in_room" cache if any forward
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extremities were deleted.
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Returns count deleted.
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"""
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def delete_forward_extremities_for_room_txn(txn: LoggingTransaction) -> int:
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# First we need to get the event_id to not delete
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sql = """
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SELECT event_id FROM event_forward_extremities
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INNER JOIN events USING (room_id, event_id)
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WHERE room_id = ?
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ORDER BY stream_ordering DESC
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LIMIT 1
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"""
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txn.execute(sql, (room_id,))
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rows = txn.fetchall()
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try:
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event_id = rows[0][0]
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logger.debug(
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"Found event_id %s as the forward extremity to keep for room %s",
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event_id,
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room_id,
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)
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except KeyError:
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msg = "No forward extremity event found for room %s" % room_id
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logger.warning(msg)
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raise SynapseError(400, msg)
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# Now delete the extra forward extremities
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sql = """
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DELETE FROM event_forward_extremities
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WHERE event_id != ? AND room_id = ?
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"""
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txn.execute(sql, (event_id, room_id))
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deleted_count = txn.rowcount
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logger.info(
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"Deleted %s extra forward extremities for room %s",
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deleted_count,
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room_id,
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)
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if deleted_count > 0:
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# Invalidate the cache
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self._invalidate_cache_and_stream(
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txn,
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self.get_latest_event_ids_in_room,
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(room_id,),
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)
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return deleted_count
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return await self.db_pool.runInteraction(
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"delete_forward_extremities_for_room",
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delete_forward_extremities_for_room_txn,
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)
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async def get_forward_extremities_for_room(
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self, room_id: str
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) -> List[Tuple[str, int, int, Optional[int]]]:
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"""
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Get list of forward extremities for a room.
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Returns:
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A list of tuples of event_id, state_group, depth, and received_ts.
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"""
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def get_forward_extremities_for_room_txn(
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txn: LoggingTransaction,
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) -> List[Tuple[str, int, int, Optional[int]]]:
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sql = """
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SELECT event_id, state_group, depth, received_ts
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FROM event_forward_extremities
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INNER JOIN event_to_state_groups USING (event_id)
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INNER JOIN events USING (room_id, event_id)
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WHERE room_id = ?
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"""
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txn.execute(sql, (room_id,))
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return cast(List[Tuple[str, int, int, Optional[int]]], txn.fetchall())
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return await self.db_pool.runInteraction(
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"get_forward_extremities_for_room",
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get_forward_extremities_for_room_txn,
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)
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