diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index bd97241ab4..32101eb36a 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -39,6 +39,9 @@ from synapse.visibility import filter_events_for_client
logger = logging.getLogger(__name__)
+# Debug logger for https://github.com/matrix-org/synapse/issues/4422
+issue4422_logger = logging.getLogger("synapse.handler.sync.4422_debug")
+
# Counts the number of times we returned a non-empty sync. `type` is one of
# "initial_sync", "full_state_sync" or "incremental_sync", `lazy_loaded` is
@@ -962,6 +965,15 @@ class SyncHandler(object):
yield self._generate_sync_entry_for_groups(sync_result_builder)
+ # debug for https://github.com/matrix-org/synapse/issues/4422
+ for joined_room in sync_result_builder.joined:
+ room_id = joined_room.room_id
+ if room_id in newly_joined_rooms:
+ issue4422_logger.debug(
+ "Sync result for newly joined room %s: %r",
+ room_id, joined_room,
+ )
+
defer.returnValue(SyncResult(
presence=sync_result_builder.presence,
account_data=sync_result_builder.account_data,
@@ -1425,6 +1437,17 @@ class SyncHandler(object):
old_mem_ev = yield self.store.get_event(
old_mem_ev_id, allow_none=True
)
+
+ # debug for #4422
+ if has_join:
+ prev_membership = None
+ if old_mem_ev:
+ prev_membership = old_mem_ev.membership
+ issue4422_logger.debug(
+ "Previous membership for room %s with join: %s (event %s)",
+ room_id, prev_membership, old_mem_ev_id,
+ )
+
if not old_mem_ev or old_mem_ev.membership != Membership.JOIN:
newly_joined_rooms.append(room_id)
@@ -1519,30 +1542,39 @@ class SyncHandler(object):
for room_id in sync_result_builder.joined_room_ids:
room_entry = room_to_events.get(room_id, None)
+ newly_joined = room_id in newly_joined_rooms
if room_entry:
events, start_key = room_entry
prev_batch_token = now_token.copy_and_replace("room_key", start_key)
- room_entries.append(RoomSyncResultBuilder(
+ entry = RoomSyncResultBuilder(
room_id=room_id,
rtype="joined",
events=events,
- newly_joined=room_id in newly_joined_rooms,
+ newly_joined=newly_joined,
full_state=False,
- since_token=None if room_id in newly_joined_rooms else since_token,
+ since_token=None if newly_joined else since_token,
upto_token=prev_batch_token,
- ))
+ )
else:
- room_entries.append(RoomSyncResultBuilder(
+ entry = RoomSyncResultBuilder(
room_id=room_id,
rtype="joined",
events=[],
- newly_joined=room_id in newly_joined_rooms,
+ newly_joined=newly_joined,
full_state=False,
since_token=since_token,
upto_token=since_token,
- ))
+ )
+
+ if newly_joined:
+ # debugging for https://github.com/matrix-org/synapse/issues/4422
+ issue4422_logger.debug(
+ "RoomSyncResultBuilder events for newly joined room %s: %r",
+ room_id, entry.events,
+ )
+ room_entries.append(entry)
defer.returnValue((room_entries, invited, newly_joined_rooms, newly_left_rooms))
@@ -1663,6 +1695,13 @@ class SyncHandler(object):
newly_joined_room=newly_joined,
)
+ if newly_joined:
+ # debug for https://github.com/matrix-org/synapse/issues/4422
+ issue4422_logger.debug(
+ "Timeline events after filtering in newly-joined room %s: %r",
+ room_id, batch,
+ )
+
# When we join the room (or the client requests full_state), we should
# send down any existing tags. Usually the user won't have tags in a
# newly joined room, unless either a) they've joined before or b) the
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