mirror of
https://mau.dev/maunium/synapse.git
synced 2024-09-03 08:02:14 +00:00
23740eaa3d
During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
80 lines
2.9 KiB
Python
80 lines
2.9 KiB
Python
#
|
|
# This file is licensed under the Affero General Public License (AGPL) version 3.
|
|
#
|
|
# Copyright 2022 The Matrix.org Foundation C.I.C.
|
|
# Copyright (C) 2023 New Vector, Ltd
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
#
|
|
# See the GNU Affero General Public License for more details:
|
|
# <https://www.gnu.org/licenses/agpl-3.0.html>.
|
|
#
|
|
# Originally licensed under the Apache License, Version 2.0:
|
|
# <http://www.apache.org/licenses/LICENSE-2.0>.
|
|
#
|
|
# [This file includes modifications made by New Vector Limited]
|
|
#
|
|
#
|
|
|
|
|
|
"""
|
|
This migration adds triggers to the partial_state_events tables to enforce uniqueness
|
|
|
|
Triggers cannot be expressed in .sql files, so we have to use a separate file.
|
|
"""
|
|
from synapse.storage.database import LoggingTransaction
|
|
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine, Sqlite3Engine
|
|
|
|
|
|
def run_create(cur: LoggingTransaction, database_engine: BaseDatabaseEngine) -> None:
|
|
# complain if the room_id in partial_state_events doesn't match
|
|
# that in `events`. We already have a fk constraint which ensures that the event
|
|
# exists in `events`, so all we have to do is raise if there is a row with a
|
|
# matching stream_ordering but not a matching room_id.
|
|
if isinstance(database_engine, Sqlite3Engine):
|
|
cur.execute(
|
|
"""
|
|
CREATE TRIGGER IF NOT EXISTS partial_state_events_bad_room_id
|
|
BEFORE INSERT ON partial_state_events
|
|
FOR EACH ROW
|
|
BEGIN
|
|
SELECT RAISE(ABORT, 'Incorrect room_id in partial_state_events')
|
|
WHERE EXISTS (
|
|
SELECT 1 FROM events
|
|
WHERE events.event_id = NEW.event_id
|
|
AND events.room_id != NEW.room_id
|
|
);
|
|
END;
|
|
"""
|
|
)
|
|
elif isinstance(database_engine, PostgresEngine):
|
|
cur.execute(
|
|
"""
|
|
CREATE OR REPLACE FUNCTION check_partial_state_events() RETURNS trigger AS $BODY$
|
|
BEGIN
|
|
IF EXISTS (
|
|
SELECT 1 FROM events
|
|
WHERE events.event_id = NEW.event_id
|
|
AND events.room_id != NEW.room_id
|
|
) THEN
|
|
RAISE EXCEPTION 'Incorrect room_id in partial_state_events';
|
|
END IF;
|
|
RETURN NEW;
|
|
END;
|
|
$BODY$ LANGUAGE plpgsql;
|
|
"""
|
|
)
|
|
|
|
cur.execute(
|
|
"""
|
|
CREATE TRIGGER check_partial_state_events BEFORE INSERT OR UPDATE ON partial_state_events
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE check_partial_state_events()
|
|
"""
|
|
)
|
|
else:
|
|
raise NotImplementedError("Unknown database engine")
|