From 23a7f9d7f4cfbf0333a1def526a59fb4b0f01067 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 12 Apr 2018 11:20:51 +0100
Subject: [PATCH] Doc we raise on unknown event

---
 synapse/storage/events_worker.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py
index 769eb51489..88360b48b8 100644
--- a/synapse/storage/events_worker.py
+++ b/synapse/storage/events_worker.py
@@ -52,13 +52,14 @@ _EventCacheEntry = namedtuple("_EventCacheEntry", ("event", "redacted_event"))
 
 class EventsWorkerStore(SQLBaseStore):
     def get_received_ts(self, event_id):
-        """Get received_ts (when it was persisted) for the event
+        """Get received_ts (when it was persisted) for the event. Raises an
+        exception for unknown events.
 
         Args:
             event_id (str)
 
         Returns:
-            Deferred[int|None]: Timstamp in milliseconds, or None for events
+            Deferred[int|None]: Timestamp in milliseconds, or None for events
             that were persisted before received_ts was implemented.
         """
         return self._simple_select_one_onecol(
-- 
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