41 lines
1.5 KiB
Erlang
41 lines
1.5 KiB
Erlang
%%--------------------------------------------------------------------
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%% Copyright (c) 2020-2023 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_resource_app).
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-behaviour(application).
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-include("emqx_resource.hrl").
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-export([start/2, stop/1]).
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start(_StartType, _StartArgs) ->
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%% since the handler is generic and executed in the process
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%% emitting the event, we need to install only a single handler
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%% for the whole app.
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TelemetryHandlerID = telemetry_handler_id(),
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ok = emqx_resource_metrics:install_telemetry_handler(TelemetryHandlerID),
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emqx_resource_sup:start_link().
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stop(_State) ->
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TelemetryHandlerID = telemetry_handler_id(),
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ok = emqx_resource_metrics:uninstall_telemetry_handler(TelemetryHandlerID),
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ok.
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%% internal functions
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telemetry_handler_id() ->
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<<"emqx-resource-app-telemetry-handler">>.
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