1 files changed, 23 insertions, 1 deletions
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 3f07b5aa4a..f141e92ce2 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+from twisted.internet import defer
 
 class BaseHandler(object):
 
@@ -26,3 +26,25 @@ class BaseHandler(object):
         self.state_handler = hs.get_state_handler()
         self.distributor = hs.get_distributor()
         self.hs = hs
+
+
+class BaseRoomHandler(BaseHandler):
+
+    @defer.inlineCallbacks
+    def _on_new_room_event(self, event, snapshot, extra_destinations=[],
+                           extra_users=[]):
+        snapshot.fill_out_prev_events(event)
+
+        store_id = yield self.store.persist_event(event)
+
+        destinations = set(extra_destinations)
+        # Send a PDU to all hosts who have joined the room.
+        destinations.update((yield self.store.get_joined_hosts_for_room(
+            event.room_id
+        )))
+        event.destinations = list(destinations)
+
+        self.notifier.on_new_room_event(event, extra_users=extra_users)
+
+        federation_handler = self.hs.get_handlers().federation_handler
+        yield federation_handler.handle_new_event(event, snapshot)