1 files changed, 23 insertions, 19 deletions
diff --git a/synapse/notifier.py b/synapse/notifier.py
index f38c410e33..c310a9fed6 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -13,9 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from twisted.internet import defer, reactor
+from twisted.internet import defer
 
 from synapse.util.logutils import log_function
+from synapse.util.logcontext import PreserveLoggingContext
 
 import logging
 
@@ -79,6 +80,8 @@ class Notifier(object):
 
         self.event_sources = hs.get_event_sources()
 
+        self.clock = hs.get_clock()
+
         hs.get_distributor().observe(
             "user_joined_room", self._user_joined_room
         )
@@ -127,9 +130,10 @@ class Notifier(object):
         def eb(failure):
             logger.exception("Failed to notify listener", failure)
 
-        yield defer.DeferredList(
-            [notify(l).addErrback(eb) for l in listeners]
-        )
+        with PreserveLoggingContext():
+            yield defer.DeferredList(
+                [notify(l).addErrback(eb) for l in listeners]
+            )
 
     @defer.inlineCallbacks
     @log_function
@@ -175,9 +179,10 @@ class Notifier(object):
                     failure.getTracebackObject())
             )
 
-        yield defer.DeferredList(
-            [notify(l).addErrback(eb) for l in listeners]
-        )
+        with PreserveLoggingContext():
+            yield defer.DeferredList(
+                [notify(l).addErrback(eb) for l in listeners]
+            )
 
     def get_events_for(self, user, rooms, pagination_config, timeout):
         """ For the given user and rooms, return any new events for them. If
@@ -206,29 +211,28 @@ class Notifier(object):
             timeout,
             deferred,
         )
+        def _timeout_listener():
+            # TODO (erikj): We should probably set to_token to the current
+            # max rather than reusing from_token.
+            listener.notify(
+                self,
+                [],
+                listener.from_token,
+                listener.from_token,
+            )
 
         if timeout:
-            reactor.callLater(timeout/1000.0, self._timeout_listener, listener)
+            self.clock.call_later(timeout/1000.0, _timeout_listener)
 
             self._register_with_keys(listener)
 
         yield self._check_for_updates(listener)
 
         if not timeout:
-            self._timeout_listener(listener)
+            _timeout_listener()
 
         return
 
-    def _timeout_listener(self, listener):
-        # TODO (erikj): We should probably set to_token to the current max
-        # rather than reusing from_token.
-        listener.notify(
-            self,
-            [],
-            listener.from_token,
-            listener.from_token,
-        )
-
     @log_function
     def _register_with_keys(self, listener):
         for room in listener.rooms: