Name 'user_rooms_intersect' transaction

synapse/storage/roommember.py

@@ -239,11 +239,11 @@ class RoomMemberStore(SQLBaseStore):
         results = self._parse_events_txn(txn, rows)
         return results
 
-    @defer.inlineCallbacks
     def user_rooms_intersect(self, user_id_list):
         """ Checks whether all the users whose IDs are given in a list share a
         room.
         """
+        def interaction(txn):
             user_list_clause = " OR ".join(["m.user_id = ?"] * len(user_id_list))
             sql = (
                 "SELECT m.room_id FROM room_memberships as m "
@@ -259,6 +259,8 @@ class RoomMemberStore(SQLBaseStore):
             args = list(user_id_list)
             args.append(len(user_id_list))
 
-        rows = yield self._execute(None, sql, *args)
+            txn.execute(sql, args)
 
-        defer.returnValue(len(rows) > 0)
+            return len(txn.fetchall()) > 0
+
+        return self.runInteraction("user_rooms_intersect", interaction)