From 0c01f829ae873bbc6451d5933ee77351ba20b93f Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Fri, 17 Mar 2017 14:30:16 +0000 Subject: [PATCH] Avoid resetting state on rejected events When we get a rejected event, give it the same state_group as its prev_event, rather than no state_group at all. This should fix https://github.com/matrix-org/synapse/issues/1935. --- synapse/storage/events.py | 8 ++++---- synapse/storage/state.py | 10 ++++++++++ 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 42e433da85..4d3cfc336f 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -645,6 +645,10 @@ class EventsStore(SQLBaseStore): events_and_contexts=events_and_contexts, ) + # Insert into the state_groups, state_groups_state, and + # event_to_state_groups tables. + self._store_mult_state_groups_txn(txn, events_and_contexts) + # _store_rejected_events_txn filters out any events which were # rejected, and returns the filtered list. events_and_contexts = self._store_rejected_events_txn( @@ -1075,10 +1079,6 @@ class EventsStore(SQLBaseStore): ], ) - # Insert into the state_groups, state_groups_state, and - # event_to_state_groups tables. - self._store_mult_state_groups_txn(txn, events_and_contexts) - # Update the event_forward_extremities, event_backward_extremities and # event_edges tables. self._handle_mult_prev_events( diff --git a/synapse/storage/state.py b/synapse/storage/state.py index 27f1ec89ec..1b42bea07a 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -136,6 +136,16 @@ class StateStore(SQLBaseStore): continue if context.current_state_ids is None: + # AFAIK, this can never happen + logger.error( + "Non-outlier event %s had current_state_ids==None", + event.event_id) + continue + + # if the event was rejected, just give it the same state as its + # predecessor. + if context.rejected: + state_groups[event.event_id] = context.prev_group continue state_groups[event.event_id] = context.state_group