Add /room/<room_id>/joined_members API

This returns the currently joined members in the room with their display
names and avatar urls. This is more efficient than /members for large
rooms where you don't need the full events.

1 files changed, 19 insertions, 0 deletions

diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py

index 3040f94867..a0bba1fa3b 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -369,6 +369,24 @@ class RoomMemberListRestServlet(ClientV1RestServlet):
         }))
 
 
+class JoinedRoomMemberListRestServlet(ClientV1RestServlet):
+    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/joined_members$")
+
+    def __init__(self, hs):
+        super(JoinedRoomMemberListRestServlet, self).__init__(hs)
+        self.state = hs.get_state_handler()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request, room_id):
+        yield self.auth.get_user_by_req(request)
+
+        users_with_profile = yield self.state.get_current_user_in_room(room_id)
+
+        defer.returnValue((200, {
+            "joined": users_with_profile
+        }))
+
+
 # TODO: Needs better unit testing
 class RoomMessageListRestServlet(ClientV1RestServlet):
     PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/messages$")
@@ -743,6 +761,7 @@ def register_servlets(hs, http_server):
     RoomStateEventRestServlet(hs).register(http_server)
     RoomCreateRestServlet(hs).register(http_server)
     RoomMemberListRestServlet(hs).register(http_server)
+    JoinedRoomMemberListRestServlet(hs).register(http_server)
     RoomMessageListRestServlet(hs).register(http_server)
     JoinRoomAliasServlet(hs).register(http_server)
     RoomForgetRestServlet(hs).register(http_server)