From caf43c3d7c51edad250e50add5595e44720ba32f Mon Sep 17 00:00:00 2001 From: Sean Quah <8349537+squahtx@users.noreply.github.com> Date: Thu, 9 Mar 2023 14:18:39 +0000 Subject: [PATCH] Faster joins: Fix spurious errors on incremental sync (#15232) When pushing events in partial state rooms down incremental /sync, we try to find the `m.room.member` state event for their senders by digging through their auth events, so that we can present the membership to the client. Events usually have a membership event in their auth events, with the exception of the `m.room.create` event and a user's first join into the room. When implementing #13477, we took the case of a user's first join into account, but forgot to handle the `m.room.create` case. This change fixes that. Signed-off-by: Sean Quah --- changelog.d/15232.bugfix | 1 + synapse/handlers/sync.py | 9 +++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) create mode 100644 changelog.d/15232.bugfix diff --git a/changelog.d/15232.bugfix b/changelog.d/15232.bugfix new file mode 100644 index 000000000000..d75a4f2d99d5 --- /dev/null +++ b/changelog.d/15232.bugfix @@ -0,0 +1 @@ +Faster joins: Fix a bug introduced in Synapse 1.66 where spurious "Failed to find memberships ..." errors would be logged. diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index fd6d946c37f0..9f5b83ed5492 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -1226,6 +1226,10 @@ async def _find_missing_partial_state_memberships( continue event_with_membership_auth = events_with_membership_auth[member] + is_create = ( + event_with_membership_auth.is_state() + and event_with_membership_auth.type == EventTypes.Create + ) is_join = ( event_with_membership_auth.is_state() and event_with_membership_auth.type == EventTypes.Member @@ -1233,9 +1237,10 @@ async def _find_missing_partial_state_memberships( and event_with_membership_auth.content.get("membership") == Membership.JOIN ) - if not is_join: + if not is_create and not is_join: # The event must include the desired membership as an auth event, unless - # it's the first join event for a given user. + # it's the `m.room.create` event for a room or the first join event for + # a given user. missing_members.add(member) auth_event_ids.update(event_with_membership_auth.auth_event_ids())