%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License at
%% http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
%% License for the specific language governing rights and limitations
%% under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is GoPivotal, Inc.
%% Copyright (c) 2007-2013 GoPivotal, Inc.  All rights reserved.
%%

-ifdef(use_specs).

-type(callback_result() :: 'ok' | {'stop', any()} | {'become', atom(), args()}).
-type(args() :: any()).
-type(members() :: [pid()]).

-spec(joined/2          :: (args(), members())    -> callback_result()).
-spec(members_changed/4 :: (args(), members(),
                            members(), members()) -> callback_result()).
-spec(handle_msg/3      :: (args(), pid(), any()) -> callback_result()).
-spec(terminate/2       :: (args(), term())       -> any()).

-endif.