mirror of
https://mau.dev/maunium/synapse.git
synced 2024-09-18 15:25:41 +00:00
38 lines
1.5 KiB
Plaintext
38 lines
1.5 KiB
Plaintext
/* Copyright 2023 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.
|
|
*/
|
|
|
|
-- Fix up the triggers that were in `78/04_read_write_locks_triggers.sql`
|
|
|
|
-- Reduce the number of writes we do on this table.
|
|
--
|
|
-- Note: that we still want to lock the row here (i.e. still do a `DO UPDATE
|
|
-- SET`) so that we serialize updates.
|
|
CREATE OR REPLACE FUNCTION upsert_read_write_lock_parent() RETURNS trigger AS $$
|
|
BEGIN
|
|
INSERT INTO worker_read_write_locks_mode (lock_name, lock_key, write_lock, token)
|
|
VALUES (NEW.lock_name, NEW.lock_key, NEW.write_lock, NEW.token)
|
|
ON CONFLICT (lock_name, lock_key)
|
|
DO UPDATE SET write_lock = NEW.write_lock
|
|
WHERE OLD.write_lock != NEW.write_lock;
|
|
RETURN NEW;
|
|
END
|
|
$$
|
|
LANGUAGE plpgsql;
|
|
|
|
DROP TRIGGER IF EXISTS upsert_read_write_lock_parent_trigger ON worker_read_write_locks;
|
|
CREATE TRIGGER upsert_read_write_lock_parent_trigger BEFORE INSERT ON worker_read_write_locks
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE upsert_read_write_lock_parent();
|