emqx/src/emqx_mod_sup.erl

47 lines
1.6 KiB
Erlang

%% Copyright (c) 2018 EMQ Technologies Co., Ltd. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
-module(emqx_mod_sup).
-behaviour(supervisor).
-export([start_link/0, start_child/1, start_child/2, stop_child/1]).
-export([init/1]).
%% Helper macro for declaring children of supervisor
-define(CHILD(Mod, Type), {Mod, {Mod, start_link, []}, permanent, 5000, Type, [Mod]}).
start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
start_child(ChildSpec) when is_tuple(ChildSpec) ->
supervisor:start_child(?MODULE, ChildSpec).
start_child(Mod, Type) when is_atom(Mod) andalso is_atom(Type) ->
supervisor:start_child(?MODULE, ?CHILD(Mod, Type)).
-spec(stop_child(any()) -> ok | {error, term()}).
stop_child(ChildId) ->
case supervisor:terminate_child(?MODULE, ChildId) of
ok -> supervisor:delete_child(?MODULE, ChildId);
Error -> Error
end.
%%------------------------------------------------------------------------------
%% Supervisor callbacks
%%------------------------------------------------------------------------------
init([]) ->
{ok, {{one_for_one, 10, 100}, []}}.