From 0c9765f8d913fca8d43f13018569f61749dc02b3 Mon Sep 17 00:00:00 2001 From: Kegan Dougal Date: Tue, 20 Oct 2020 10:36:12 +0100 Subject: [PATCH] Fix deadlock in sqlite mode Caused by starting a writer whilst within a writer --- roomserver/storage/shared/latest_events_updater.go | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/roomserver/storage/shared/latest_events_updater.go b/roomserver/storage/shared/latest_events_updater.go index b316f639d..8825dc464 100644 --- a/roomserver/storage/shared/latest_events_updater.go +++ b/roomserver/storage/shared/latest_events_updater.go @@ -70,16 +70,14 @@ func (u *LatestEventsUpdater) CurrentStateSnapshotNID() types.StateSnapshotNID { return u.currentStateSnapshotNID } -// StorePreviousEvents implements types.RoomRecentEventsUpdater +// StorePreviousEvents implements types.RoomRecentEventsUpdater - This must be called from a Writer func (u *LatestEventsUpdater) StorePreviousEvents(eventNID types.EventNID, previousEventReferences []gomatrixserverlib.EventReference) error { - return u.d.Writer.Do(u.d.DB, u.txn, func(txn *sql.Tx) error { - for _, ref := range previousEventReferences { - if err := u.d.PrevEventsTable.InsertPreviousEvent(u.ctx, txn, ref.EventID, ref.EventSHA256, eventNID); err != nil { - return fmt.Errorf("u.d.PrevEventsTable.InsertPreviousEvent: %w", err) - } + for _, ref := range previousEventReferences { + if err := u.d.PrevEventsTable.InsertPreviousEvent(u.ctx, u.txn, ref.EventID, ref.EventSHA256, eventNID); err != nil { + return fmt.Errorf("u.d.PrevEventsTable.InsertPreviousEvent: %w", err) } - return nil - }) + } + return nil } // IsReferenced implements types.RoomRecentEventsUpdater