Don't bother passing the events to the notifier since it isn't using them

synapse/notifier.py

@@ -17,6 +17,7 @@ from twisted.internet import defer
 
 from synapse.util.logutils import log_function
 from synapse.util.logcontext import PreserveLoggingContext
+from synapse.util.async import run_on_reactor
 from synapse.types import StreamToken
 import synapse.metrics
 
@@ -50,13 +51,9 @@ class _NotificationListener(object):
     so that it can remove itself from the indexes in the Notifier class.
     """
 
-    def __init__(self, user, rooms, from_token, limit, timeout, deferred,
-                 appservice=None):
+    def __init__(self, user, rooms, deferred, appservice=None):
         self.user = user
         self.appservice = appservice
-        self.from_token = from_token
-        self.limit = limit
-        self.timeout = timeout
         self.deferred = deferred
         self.rooms = rooms
         self.timer = None
@@ -64,17 +61,14 @@ class _NotificationListener(object):
     def notified(self):
         return self.deferred.called
 
-    def notify(self, notifier, events, start_token, end_token):
+    def notify(self, notifier):
         """ Inform whoever is listening about the new events. This will
         also remove this listener from all the indexes in the Notifier
         it knows about.
         """
 
-        result = (events, (start_token, end_token))
-
         try:
-            self.deferred.callback(result)
-            notified_events_counter.inc_by(len(events))
+            self.deferred.callback(None)
         except defer.AlreadyCalledError:
             pass
 
@@ -161,6 +155,7 @@ class Notifier(object):
         listening to the room, and any listeners for the users in the
         `extra_users` param.
         """
+        yield run_on_reactor()
         # poke any interested application service.
         self.hs.get_handlers().appservice_handler.notify_interested_services(
             event
@@ -168,8 +163,6 @@ class Notifier(object):
 
         room_id = event.room_id
 
-        room_source = self.event_sources.sources["room"]
-
         room_listeners = self.room_to_listeners.get(room_id, set())
 
         _discard_if_notified(room_listeners)
@@ -200,34 +193,12 @@ class Notifier(object):
 
         logger.debug("on_new_room_event listeners %s", listeners)
 
-        # TODO (erikj): Can we make this more efficient by hitting the
-        # db once?
-
-        @defer.inlineCallbacks
-        def notify(listener):
-            events, end_key = yield room_source.get_new_events_for_user(
-                listener.user,
-                listener.from_token.room_key,
-                listener.limit,
-            )
-
-            if events:
-                end_token = listener.from_token.copy_and_replace(
-                    "room_key", end_key
-                )
-
-                listener.notify(
-                    self, events, listener.from_token, end_token
-                )
-
-        def eb(failure):
-            logger.exception("Failed to notify listener", failure)
-
         with PreserveLoggingContext():
-            yield defer.DeferredList(
-                [notify(l).addErrback(eb) for l in listeners],
-                consumeErrors=True,
-            )
+            for listener in listeners:
+                try:
+                    listener.notify(self)
+                except:
+                    logger.exception("Failed to notify listener")
 
     @defer.inlineCallbacks
     @log_function
@@ -237,11 +208,7 @@ class Notifier(object):
 
         Will wake up all listeners for the given users and rooms.
         """
-        # TODO(paul): This is horrible, having to manually list every event
-        # source here individually
-        presence_source = self.event_sources.sources["presence"]
-        typing_source = self.event_sources.sources["typing"]
-
+        yield run_on_reactor()
         listeners = set()
 
         for user in users:
@@ -258,51 +225,12 @@ class Notifier(object):
 
             listeners |= room_listeners
 
-        @defer.inlineCallbacks
-        def notify(listener):
-            presence_events, presence_end_key = (
-                yield presence_source.get_new_events_for_user(
-                    listener.user,
-                    listener.from_token.presence_key,
-                    listener.limit,
-                )
-            )
-            typing_events, typing_end_key = (
-                yield typing_source.get_new_events_for_user(
-                    listener.user,
-                    listener.from_token.typing_key,
-                    listener.limit,
-                )
-            )
-
-            if presence_events or typing_events:
-                end_token = listener.from_token.copy_and_replace(
-                    "presence_key", presence_end_key
-                ).copy_and_replace(
-                    "typing_key", typing_end_key
-                )
-
-                listener.notify(
-                    self,
-                    presence_events + typing_events,
-                    listener.from_token,
-                    end_token
-                )
-
-        def eb(failure):
-            logger.error(
-                "Failed to notify listener",
-                exc_info=(
-                    failure.type,
-                    failure.value,
-                    failure.getTracebackObject())
-            )
-
         with PreserveLoggingContext():
-            yield defer.DeferredList(
-                [notify(l).addErrback(eb) for l in listeners],
-                consumeErrors=True,
-            )
+            for listener in listeners:
+                try:
+                    listener.notify(self)
+                except:
+                    logger.exception("Failed to notify listener")
 
     @defer.inlineCallbacks
     def wait_for_events(self, user, rooms, timeout, callback,
@@ -319,9 +247,6 @@ class Notifier(object):
         listener = [_NotificationListener(
             user=user,
             rooms=rooms,
-            from_token=from_token,
-            limit=1,
-            timeout=timeout,
             deferred=deferred,
             appservice=appservice,
         )]
@@ -338,7 +263,7 @@ class Notifier(object):
             def _timeout_listener():
                 timed_out[0] = True
                 timer[0] = None
-                listener[0].notify(self, [], from_token, from_token)
+                listener[0].notify(self)
 
             # We create multiple notification listeners so we have to manage
             # canceling the timeout ourselves.
@@ -350,10 +275,8 @@ class Notifier(object):
                 listener[0] = _NotificationListener(
                     user=user,
                     rooms=rooms,
-                    from_token=from_token,
-                    limit=1,
-                    timeout=timeout,
                     deferred=deferred,
+                    appservice=appservice,
                 )
                 self._register_with_keys(listener[0])
                 result = yield callback()