From 7b0e804a4a684a210abf5107e720582f68f464e7 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Tue, 21 May 2019 15:21:38 +0100 Subject: [PATCH] Fix get_max_topological_token to never return None --- synapse/storage/stream.py | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py index 529ad4ea7..0b5f5f966 100644 --- a/synapse/storage/stream.py +++ b/synapse/storage/stream.py @@ -592,8 +592,18 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore): ) def get_max_topological_token(self, room_id, stream_key): + """Get the max topological token in a room that before given stream + ordering. + + Args: + room_id (str) + stream_key (int) + + Returns: + Deferred[int] + """ sql = ( - "SELECT max(topological_ordering) FROM events" + "SELECT coalesce(max(topological_ordering), 0) FROM events" " WHERE room_id = ? AND stream_ordering < ?" ) return self._execute(