diff options
| -rw-r--r-- | synapse/storage/event_push_actions.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/synapse/storage/event_push_actions.py b/synapse/storage/event_push_actions.py index 7164293568..54b54dcc6a 100644 --- a/synapse/storage/event_push_actions.py +++ b/synapse/storage/event_push_actions.py @@ -489,6 +489,27 @@ class EventPushActionsWorkerStore(SQLBaseStore): self.stream_ordering_day_ago ) + def find_first_stream_ordering_after_ts(self, ts): + """Gets the stream ordering corresponding to a given timestamp. + + Specifically, finds the stream_ordering of the first event that was + received after the timestamp. This is done by a binary search on the + events table, since there is no index on received_ts, so is + relatively slow. + + Args: + ts (int): timestamp in millis + + Returns: + Deferred[int]: stream ordering of the first event received after + the timestamp + """ + return self.runInteraction( + "_find_first_stream_ordering_after_ts_txn", + self._find_first_stream_ordering_after_ts_txn, + ts, + ) + def _find_first_stream_ordering_after_ts_txn(self, txn, ts): """ Find the stream_ordering of the first event that was received after |