From e9069c9f919685606506f04527332e83fbfa44d9 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Thu, 19 Oct 2023 15:04:18 +0100 Subject: Mark sync as limited if there is a gap in the timeline (#16485) This splits thinsg into two queries, but most of the time we won't have new event backwards extremities so this shouldn't actually add an extra RTT for the majority of cases. Note this removes the check for events with no prev events, but that was part of MSC2716 work that has since been removed. --- synapse/storage/schema/main/delta/82/05gaps.sql | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 synapse/storage/schema/main/delta/82/05gaps.sql (limited to 'synapse/storage/schema') diff --git a/synapse/storage/schema/main/delta/82/05gaps.sql b/synapse/storage/schema/main/delta/82/05gaps.sql new file mode 100644 index 0000000000..6813b488ca --- /dev/null +++ b/synapse/storage/schema/main/delta/82/05gaps.sql @@ -0,0 +1,25 @@ +/* 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. + */ + +-- Records when we see a "gap in the timeline", due to missing events over +-- federation. We record this so that we can tell clients there is a gap (by +-- marking the timeline section of a sync request as limited). +CREATE TABLE IF NOT EXISTS timeline_gaps ( + room_id TEXT NOT NULL, + instance_name TEXT NOT NULL, + stream_ordering BIGINT NOT NULL +); + +CREATE INDEX timeline_gaps_room_id ON timeline_gaps(room_id, stream_ordering); -- cgit 1.5.1