Merge branch 'develop' into paul/tiny-fixes

1 files changed, 15 insertions, 13 deletions

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index c1bce07e31..2855f2d7c3 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -44,6 +44,10 @@ import logging
 logger = logging.getLogger(__name__)
 
 
+def user_joined_room(distributor, user, room_id):
+    return distributor.fire("user_joined_room", user, room_id)
+
+
 class FederationHandler(BaseHandler):
     """Handles events that originated from federation.
         Responsible for:
@@ -60,10 +64,7 @@ class FederationHandler(BaseHandler):
 
         self.hs = hs
 
-        self.distributor.observe(
-            "user_joined_room",
-            self._on_user_joined
-        )
+        self.distributor.observe("user_joined_room", self.user_joined_room)
 
         self.waiting_for_join_list = {}
 
@@ -176,7 +177,7 @@ class FederationHandler(BaseHandler):
                 )
 
             try:
-                _, event_stream_id, max_stream_id = yield self._handle_new_event(
+                context, event_stream_id, max_stream_id = yield self._handle_new_event(
                     origin,
                     event,
                     state=state,
@@ -233,10 +234,13 @@ class FederationHandler(BaseHandler):
 
         if event.type == EventTypes.Member:
             if event.membership == Membership.JOIN:
-                user = UserID.from_string(event.state_key)
-                yield self.distributor.fire(
-                    "user_joined_room", user=user, room_id=event.room_id
-                )
+                prev_state = context.current_state.get((event.type, event.state_key))
+                if not prev_state or prev_state.membership != Membership.JOIN:
+                    # Only fire user_joined_room if the user has acutally
+                    # joined the room. Don't bother if the user is just
+                    # changing their profile info.
+                    user = UserID.from_string(event.state_key)
+                    yield user_joined_room(self.distributor, user, event.room_id)
 
     @defer.inlineCallbacks
     def _filter_events_for_server(self, server_name, room_id, events):
@@ -733,9 +737,7 @@ class FederationHandler(BaseHandler):
         if event.type == EventTypes.Member:
             if event.content["membership"] == Membership.JOIN:
                 user = UserID.from_string(event.state_key)
-                yield self.distributor.fire(
-                    "user_joined_room", user=user, room_id=event.room_id
-                )
+                yield user_joined_room(self.distributor, user, event.room_id)
 
         new_pdu = event
 
@@ -1082,7 +1084,7 @@ class FederationHandler(BaseHandler):
         return self.store.get_min_depth(context)
 
     @log_function
-    def _on_user_joined(self, user, room_id):
+    def user_joined_room(self, user, room_id):
         waiters = self.waiting_for_join_list.get(
             (user.to_string(), room_id),
             []