Merge pull request #600 from matrix-org/erikj/presence

Measure PresenceEventSource.get_new_events

synapse/handlers/presence.py

@@ -46,6 +46,7 @@ logger = logging.getLogger(__name__)
 metrics = synapse.metrics.get_metrics_for(__name__)
 
 notified_presence_counter = metrics.register_counter("notified_presence")
+federation_presence_out_counter = metrics.register_counter("federation_presence_out")
 presence_updates_counter = metrics.register_counter("presence_updates")
 timers_fired_counter = metrics.register_counter("timers_fired")
 federation_presence_counter = metrics.register_counter("federation_presence")
@@ -259,6 +260,8 @@ class PresenceHandler(BaseHandler):
                 if user_id not in to_notify
             }
             if to_federation_ping:
+                federation_presence_out_counter.inc_by(len(to_federation_ping))
+
                 _, _, hosts_to_states = yield self._get_interested_parties(
                     to_federation_ping.values()
                 )
@@ -836,41 +839,42 @@ class PresenceEventSource(object):
         # We don't try and limit the presence updates by the current token, as
         # sending down the rare duplicate is not a concern.
 
-        user_id = user.to_string()
-        if from_key is not None:
-            from_key = int(from_key)
-        room_ids = room_ids or []
+        with Measure(self.clock, "presence.get_new_events"):
+            user_id = user.to_string()
+            if from_key is not None:
+                from_key = int(from_key)
+            room_ids = room_ids or []
 
-        presence = self.hs.get_handlers().presence_handler
+            presence = self.hs.get_handlers().presence_handler
 
-        if not room_ids:
-            rooms = yield self.store.get_rooms_for_user(user_id)
-            room_ids = set(e.room_id for e in rooms)
+            if not room_ids:
+                rooms = yield self.store.get_rooms_for_user(user_id)
+                room_ids = set(e.room_id for e in rooms)
 
-        user_ids_to_check = set()
-        for room_id in room_ids:
-            users = yield self.store.get_users_in_room(room_id)
-            user_ids_to_check.update(users)
+            user_ids_to_check = set()
+            for room_id in room_ids:
+                users = yield self.store.get_users_in_room(room_id)
+                user_ids_to_check.update(users)
 
-        plist = yield self.store.get_presence_list_accepted(user.localpart)
-        user_ids_to_check.update([row["observed_user_id"] for row in plist])
+            plist = yield self.store.get_presence_list_accepted(user.localpart)
+            user_ids_to_check.update([row["observed_user_id"] for row in plist])
 
-        # Always include yourself. Only really matters for when the user is
-        # not in any rooms, but still.
-        user_ids_to_check.add(user_id)
+            # Always include yourself. Only really matters for when the user is
+            # not in any rooms, but still.
+            user_ids_to_check.add(user_id)
 
-        max_token = self.store.get_current_presence_token()
+            max_token = self.store.get_current_presence_token()
 
-        if from_key:
-            user_ids_changed = self.store.presence_stream_cache.get_entities_changed(
-                user_ids_to_check, from_key,
-            )
-        else:
-            user_ids_changed = user_ids_to_check
+            if from_key:
+                user_ids_changed = self.store.presence_stream_cache.get_entities_changed(
+                    user_ids_to_check, from_key,
+                )
+            else:
+                user_ids_changed = user_ids_to_check
 
-        updates = yield presence.current_state_for_users(user_ids_changed)
+            updates = yield presence.current_state_for_users(user_ids_changed)
 
-        now = self.clock.time_msec()
+            now = self.clock.time_msec()
 
         defer.returnValue(([
             {