diff options
| -rw-r--r-- | synapse/rest/client/v2_alpha/sync.py | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py index 3f8ce701dc..73b44e92eb 100644 --- a/synapse/rest/client/v2_alpha/sync.py +++ b/synapse/rest/client/v2_alpha/sync.py @@ -351,14 +351,27 @@ class SyncRestServlet(RestServlet): continue prev_event_id = timeline_event.unsigned.get("replaces_state", None) - logger.debug("Replacing %s with %s in state dict", - timeline_event.event_id, prev_event_id) prev_content = timeline_event.unsigned.get('prev_content') prev_sender = timeline_event.unsigned.get('prev_sender') + # Empircally it seems possible for the event to have a + # "replaces_state" key but not a prev_content or prev_sender + # markjh conjectures that it could be due to the server not + # having a copy of that event. + # If this is the case the we ignore the previous event. This will + # cause the displayname calculations on the client to be incorrect if prev_event_id is None or not prev_content or not prev_sender: + logger.debug( + "Removing %r from the state dict, as it is missing" + " prev_content (prev_event_id=%r)", + timeline_event.event_id, prev_event_id + ) del result[event_key] else: + logger.debug( + "Replacing %r with %r in state dict", + timeline_event.event_id, prev_event_id + ) result[event_key] = FrozenEvent({ "type": timeline_event.type, "state_key": timeline_event.state_key, |