rabbit_amqqueue_sup_sup.erl

%% 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) 2007-2014 GoPivotal, Inc.  All rights reserved.
%%

-module(rabbit_amqqueue_sup_sup).

-behaviour(supervisor2).

-export([start_link/0, start_queue_process/3]).

-export([init/1]).

-include("rabbit.hrl").

-define(SERVER, ?MODULE).

%%----------------------------------------------------------------------------

-ifdef(use_specs).

-spec(start_link/0 :: () -> rabbit_types:ok_pid_or_error()).
-spec(start_queue_process/3 :: (node(), rabbit_types:amqqueue(),
                               'declare' | 'recovery' | 'slave') -> pid()).

-endif.

%%----------------------------------------------------------------------------
%% 启动rabbit_amqqueue_sup_sup监督进程
start_link() ->
	supervisor2:start_link({local, ?SERVER}, ?MODULE, []).


%% 在rabbit_amqqueue_sup_sup监督进程下启动一个rabbit_amqqueue_sup监督进程，同时在rabbit_amqqueue_sup监督进程下启动一个队列进程
start_queue_process(Node, Q, StartMode) ->
	{ok, _SupPid, QPid} = supervisor2:start_child(
							{?SERVER, Node}, [Q, StartMode]),
	%% 返回队列Pid
	QPid.


%% rabbit_amqqueue_sup_sup监督进程启动的回调初始化
init([]) ->
	{ok, {{simple_one_for_one, 10, 10},
		  [{rabbit_amqqueue_sup, {rabbit_amqqueue_sup, start_link, []},
			temporary, ?MAX_WAIT, supervisor, [rabbit_amqqueue_sup]}]}}.