mirror of
https://mau.dev/maunium/synapse.git
synced 2024-09-18 15:25:41 +00:00
6efa674004
Cleans-up the schema delta files: * Removes no-op functions. * Adds missing type hints to function parameters. * Fixes any issues with type hints. This also renames one (very old) schema delta to avoid a conflict that mypy complains about.
80 lines
3.0 KiB
Python
80 lines
3.0 KiB
Python
# Copyright 2022 Beeper
|
|
#
|
|
# 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.
|
|
|
|
|
|
"""
|
|
This migration adds triggers to the room membership tables to enforce consistency.
|
|
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 `event_stream_ordering` in membership tables doesn't match
|
|
# the `stream_ordering` row with the same `event_id` in `events`.
|
|
if isinstance(database_engine, Sqlite3Engine):
|
|
for table in (
|
|
"current_state_events",
|
|
"local_current_membership",
|
|
"room_memberships",
|
|
):
|
|
cur.execute(
|
|
f"""
|
|
CREATE TRIGGER IF NOT EXISTS {table}_bad_event_stream_ordering
|
|
BEFORE INSERT ON {table}
|
|
FOR EACH ROW
|
|
BEGIN
|
|
SELECT RAISE(ABORT, 'Incorrect event_stream_ordering in {table}')
|
|
WHERE EXISTS (
|
|
SELECT 1 FROM events
|
|
WHERE events.event_id = NEW.event_id
|
|
AND events.stream_ordering != NEW.event_stream_ordering
|
|
);
|
|
END;
|
|
"""
|
|
)
|
|
elif isinstance(database_engine, PostgresEngine):
|
|
cur.execute(
|
|
"""
|
|
CREATE OR REPLACE FUNCTION check_event_stream_ordering() RETURNS trigger AS $BODY$
|
|
BEGIN
|
|
IF EXISTS (
|
|
SELECT 1 FROM events
|
|
WHERE events.event_id = NEW.event_id
|
|
AND events.stream_ordering != NEW.event_stream_ordering
|
|
) THEN
|
|
RAISE EXCEPTION 'Incorrect event_stream_ordering';
|
|
END IF;
|
|
RETURN NEW;
|
|
END;
|
|
$BODY$ LANGUAGE plpgsql;
|
|
"""
|
|
)
|
|
|
|
for table in (
|
|
"current_state_events",
|
|
"local_current_membership",
|
|
"room_memberships",
|
|
):
|
|
cur.execute(
|
|
f"""
|
|
CREATE TRIGGER check_event_stream_ordering BEFORE INSERT OR UPDATE ON {table}
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE check_event_stream_ordering()
|
|
"""
|
|
)
|
|
else:
|
|
raise NotImplementedError("Unknown database engine")
|