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use std::sync::Arc; use std::thread; use std::time::Duration; use derive_builder::Builder; use log::{log, Level}; use metriki_core::metrics::*; use metriki_core::MetricsRegistry; #[derive(Builder, Debug)] pub struct LogReporter { #[builder(default, setter(into))] prefix: String, registry: Arc<MetricsRegistry>, #[builder(default = "5")] interval_secs: u64, #[builder(default = "Level::Info")] level: Level, } impl LogReporter { pub fn start(self) { let looper = move || loop { let metrics = self.registry.snapshots(); for (ref key, metric) in metrics { match metric { Metric::Counter(c) => self.report_counter(key, c.as_ref()), Metric::Gauge(g) => self.report_gauge(key, g.as_ref()), Metric::Timer(t) => self.report_timer(key, t.as_ref()), Metric::Meter(m) => self.report_meter(key, m.as_ref()), Metric::Histogram(h) => self.report_histogram(key, &h.snapshot()), } } thread::sleep(Duration::from_secs(self.interval_secs)); }; thread::spawn(looper); } fn report_meter(&self, name: &str, meter: &Meter) { log!(self.level, "{}{}.m1={}", self.prefix, name, meter.m1_rate()); log!(self.level, "{}{}.m5={}", self.prefix, name, meter.m5_rate()); log!( self.level, "{}{}.m15={}", self.prefix, name, meter.m15_rate() ); } fn report_gauge(&self, name: &str, gauge: &Gauge) { let value = gauge.value(); log!(self.level, "{}{}.value={}", self.prefix, name, value); } fn report_histogram(&self, name: &str, snapshot: &HistogramSnapshot) { log!( self.level, "{}{}.p50={}", self.prefix, name, snapshot.quantile(0.5) ); log!( self.level, "{}{}.p75={}", self.prefix, name, snapshot.quantile(0.75) ); log!( self.level, "{}{}.p90={}", self.prefix, name, snapshot.quantile(0.9) ); log!( self.level, "{}{}.p99={}", self.prefix, name, snapshot.quantile(0.99) ); log!( self.level, "{}{}.p999={}", self.prefix, name, snapshot.quantile(0.999) ); log!(self.level, "{}{}.max={}", self.prefix, name, snapshot.max()); log!(self.level, "{}{}.min={}", self.prefix, name, snapshot.min()); log!( self.level, "{}{}.mean={}", self.prefix, name, snapshot.mean() ); } fn report_counter(&self, name: &str, c: &Counter) { log!(self.level, "{}{}.value={}", self.prefix, name, c.value()); } fn report_timer(&self, name: &str, t: &Timer) { self.report_meter(name, t.rate()); self.report_histogram(name, &t.latency()); } }