72 lines
2.2 KiB
Erlang
72 lines
2.2 KiB
Erlang
%%--------------------------------------------------------------------
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%% Copyright (c) 2020 EMQ Technologies Co., Ltd. All Rights Reserved.
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%%
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%% Licensed under the Apache License, Version 2.0 (the "License");
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%% you may not use this file except in compliance with the License.
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%% You may obtain a copy of the License at
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%%
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%% http://www.apache.org/licenses/LICENSE-2.0
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%%
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%% Unless required by applicable law or agreed to in writing, software
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%% distributed under the License is distributed on an "AS IS" BASIS,
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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%% See the License for the specific language governing permissions and
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%% limitations under the License.
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%%--------------------------------------------------------------------
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-module(emqx_app).
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-behaviour(application).
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-export([ start/2
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, stop/1
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]).
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-define(APP, emqx).
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%%--------------------------------------------------------------------
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%% Application callbacks
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%%--------------------------------------------------------------------
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start(_Type, _Args) ->
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print_banner(),
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ekka:start(),
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{ok, Sup} = emqx_sup:start_link(),
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start_autocluster(),
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emqx_boot:is_enabled(listeners)
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andalso (ok = emqx_listeners:start()),
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ok = emqx_plugins:init(),
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emqx_plugins:load(),
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register(emqx, self()),
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emqx_alarm_handler:load(),
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print_vsn(),
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{ok, Sup}.
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-spec(stop(State :: term()) -> term()).
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stop(_State) ->
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emqx_alarm_handler:unload(),
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emqx_boot:is_enabled(listeners)
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andalso emqx_listeners:stop().
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%%--------------------------------------------------------------------
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%% Print Banner
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%%--------------------------------------------------------------------
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print_banner() ->
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io:format("Starting ~s on node ~s~n", [?APP, node()]).
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print_vsn() ->
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{ok, Descr} = application:get_key(description),
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{ok, Vsn} = application:get_key(vsn),
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io:format("~s ~s is running now!~n", [Descr, Vsn]).
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%%--------------------------------------------------------------------
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%% Autocluster
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%%--------------------------------------------------------------------
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start_autocluster() ->
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ekka:callback(prepare, fun emqx:shutdown/1),
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ekka:callback(reboot, fun emqx:reboot/0),
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ekka:autocluster(?APP).
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