Merge pull request #1047 from matrix-org/erikj/state_ids

Avoid pulling the full state of a room out so often.

1 files changed, 15 insertions, 6 deletions

diff --git a/synapse/storage/push_rule.py b/synapse/storage/push_rule.py
index 78334a98cf..7e6ec411cd 100644
--- a/synapse/storage/push_rule.py
+++ b/synapse/storage/push_rule.py
@@ -124,7 +124,8 @@ class PushRuleStore(SQLBaseStore):
 
         defer.returnValue(results)
 
-    def bulk_get_push_rules_for_room(self, room_id, state_group, current_state):
+    def bulk_get_push_rules_for_room(self, room_id, context):
+        state_group = context.state_group
         if not state_group:
             # If state_group is None it means it has yet to be assigned a
             # state group, i.e. we need to make sure that calls with a state_group
@@ -132,10 +133,12 @@ class PushRuleStore(SQLBaseStore):
             # To do this we set the state_group to a new object as object() != object()
             state_group = object()
 
-        return self._bulk_get_push_rules_for_room(room_id, state_group, current_state)
+        return self._bulk_get_push_rules_for_room(
+            room_id, state_group, context.current_state_ids
+        )
 
     @cachedInlineCallbacks(num_args=2, cache_context=True)
-    def _bulk_get_push_rules_for_room(self, room_id, state_group, current_state,
+    def _bulk_get_push_rules_for_room(self, room_id, state_group, current_state_ids,
                                       cache_context):
         # We don't use `state_group`, its there so that we can cache based
         # on it. However, its important that its never None, since two current_state's
@@ -147,10 +150,16 @@ class PushRuleStore(SQLBaseStore):
         # their unread countss are correct in the event stream, but to avoid
         # generating them for bot / AS users etc, we only do so for people who've
         # sent a read receipt into the room.
+        local_user_member_ids = [
+            e_id for (etype, state_key), e_id in current_state_ids.iteritems()
+            if etype == EventTypes.Member and self.hs.is_mine_id(state_key)
+        ]
+
+        local_member_events = yield self._get_events(local_user_member_ids)
+
         local_users_in_room = set(
-            e.state_key for e in current_state.values()
-            if e.type == EventTypes.Member and e.membership == Membership.JOIN
-            and self.hs.is_mine_id(e.state_key)
+            member_event.state_key for member_event in local_member_events
+            if member_event.membership == Membership.JOIN
         )
 
         # users in the room who have pushers need to get push rules run because