Method Collect

prometheus/go_collector.go:244–262

Collect returns the current state of all metrics of the collector.

(ch chan<- Metric)

// Collect returns the current state of all metrics of the collector.
func (c *baseGoCollector) Collect(ch chan<- Metric) {
	ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine()))

	n := getRuntimeNumThreads()
	ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, n)

	var stats debug.GCStats
	stats.PauseQuantiles = make([]time.Duration, 5)
	debug.ReadGCStats(&stats)

	quantiles := make(map[float64]float64)
	for idx, pq := range stats.PauseQuantiles[1:] {
		quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds()
	}
	quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
	ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), stats.PauseTotal.Seconds(), quantiles)
	ch <- MustNewConstMetric(c.gcLastTimeDesc, GaugeValue, float64(stats.LastGC.UnixNano())/1e9)
	ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1)
}

func memstatNamespace(s string) string {
	return "go_memstats_" + s