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-module(mongoose_instrument_probe). |
| 2 |
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-export([start_probe_timer/3, call/3]). |
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-callback probe(mongoose_instrument:event_name(), mongoose_instrument:labels()) -> |
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mongoose_instrument:measurements(). |
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-ignore_xref([call/3]). |
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-spec start_probe_timer(mongoose_instrument:event_name(), |
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mongoose_instrument:labels(), |
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mongoose_instrument:probe_config()) -> timer:tref(). |
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start_probe_timer(EventName, Labels, #{module := Module} = ProbeConfig) -> |
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Interval = timer:seconds(get_probe_interval(ProbeConfig)), |
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%% TODO: when dropping support for OTP25, consider changing this to apply_repeatedly |
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{ok, TRef} = timer:apply_interval(Interval, ?MODULE, call, [Module, EventName, Labels]), |
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TRef. |
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call(ProbeMod, EventName, Labels) -> |
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case safely:apply_and_log(ProbeMod, probe, [EventName, Labels], |
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#{what => probe_failed, probe_mod => ProbeMod, |
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event_name => EventName, labels => Labels}) of |
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{exception, _} -> |
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:-( |
ok; % Already logged |
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Measurements = #{} -> |
| 26 |
71 |
mongoose_instrument:execute(EventName, Labels, Measurements) |
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end. |
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-spec get_probe_interval(mongoose_instrument:probe_config()) -> pos_integer(). |
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get_probe_interval(#{interval := Interval}) when is_integer(Interval), Interval > 0 -> |
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:-( |
Interval; |
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get_probe_interval(#{}) -> |
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mongoose_config:get_opt([instrumentation, probe_interval]). |