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%% Copyright (c) 2023 Peter Morgan <peter.james.morgan@gmail.com> |
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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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-module(msc_telemetry). |
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-export([callback_mode/0]). |
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-export([init/1]). |
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-export([start_link/0]). |
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-export([terminate/3]). |
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-include_lib("kernel/include/logger.hrl"). |
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start_link() -> |
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gen_statem:start_link(?MODULE, [], envy_gen:options(?MODULE)). |
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init([]) -> |
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try |
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M = msc_config:telemetry(module), |
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F = msc_config:telemetry(function), |
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Telemetry = fun M:F/4, |
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case telemetry:attach_many( |
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?MODULE, |
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phrase_file:consult(msc_config:telemetry(event_names)), |
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fun M:F/4, |
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msc_config:telemetry(config)) of |
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ok -> |
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{ok, ready, #{telemetry => Telemetry}, hibernate}; |
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{error, Reason} -> |
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{stop, Reason} |
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end |
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catch |
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error:badarg -> |
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?LOG_NOTICE(#{?MODULE => "no configuration"}), |
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ignore |
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end. |
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callback_mode() -> |
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handle_event_function. |
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terminate(_Reason, _State, _Data) -> |
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telemetry:detach(?MODULE). |