From b2486f6656bec2307e62de19d2830994a42b879d Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Tue, 13 Oct 2020 12:07:56 +0100 Subject: Fix message duplication if something goes wrong after persisting the event (#8476) Should fix #3365. --- .../databases/main/schema/delta/58/19txn_id.sql | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 synapse/storage/databases/main/schema/delta/58/19txn_id.sql (limited to 'synapse/storage/databases/main/schema') diff --git a/synapse/storage/databases/main/schema/delta/58/19txn_id.sql b/synapse/storage/databases/main/schema/delta/58/19txn_id.sql new file mode 100644 index 0000000000..b2454121a8 --- /dev/null +++ b/synapse/storage/databases/main/schema/delta/58/19txn_id.sql @@ -0,0 +1,40 @@ +/* Copyright 2020 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. + */ + + +-- A map of recent events persisted with transaction IDs. Used to deduplicate +-- send event requests with the same transaction ID. +-- +-- Note: transaction IDs are scoped to the room ID/user ID/access token that was +-- used to make the request. +-- +-- Note: The foreign key constraints are ON DELETE CASCADE, as if we delete the +-- events or access token we don't want to try and de-duplicate the event. +CREATE TABLE IF NOT EXISTS event_txn_id ( + event_id TEXT NOT NULL, + room_id TEXT NOT NULL, + user_id TEXT NOT NULL, + token_id BIGINT NOT NULL, + txn_id TEXT NOT NULL, + inserted_ts BIGINT NOT NULL, + FOREIGN KEY (event_id) + REFERENCES events (event_id) ON DELETE CASCADE, + FOREIGN KEY (token_id) + REFERENCES access_tokens (id) ON DELETE CASCADE +); + +CREATE UNIQUE INDEX IF NOT EXISTS event_txn_id_event_id ON event_txn_id(event_id); +CREATE UNIQUE INDEX IF NOT EXISTS event_txn_id_txn_id ON event_txn_id(room_id, user_id, token_id, txn_id); +CREATE INDEX IF NOT EXISTS event_txn_id_ts ON event_txn_id(inserted_ts); -- cgit 1.5.1