1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py
index 98dac19a95..ad17123915 100644
--- a/synapse/storage/databases/main/events.py
+++ b/synapse/storage/databases/main/events.py
@@ -320,8 +320,8 @@ class PersistEventsStore:
txn: LoggingTransaction,
events_and_contexts: List[Tuple[EventBase, EventContext]],
backfilled: bool,
- state_delta_for_room: Dict[str, DeltaState] = {},
- new_forward_extremeties: Dict[str, List[str]] = {},
+ state_delta_for_room: Optional[Dict[str, DeltaState]] = None,
+ new_forward_extremeties: Optional[Dict[str, List[str]]] = None,
):
"""Insert some number of room events into the necessary database tables.
@@ -342,6 +342,9 @@ class PersistEventsStore:
extremities.
"""
+ state_delta_for_room = state_delta_for_room or {}
+ new_forward_extremeties = new_forward_extremeties or {}
+
all_events_and_contexts = events_and_contexts
min_stream_order = events_and_contexts[0][0].internal_metadata.stream_ordering
|
