forked from mirror/client_golang
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package prometheus
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import (
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"runtime"
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"runtime/debug"
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"time"
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)
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type goCollector struct {
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goroutines Gauge
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gcDesc *Desc
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}
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// NewGoCollector returns a collector which exports metrics about the current
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// go process.
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func NewGoCollector() *goCollector {
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return &goCollector{
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goroutines: NewGauge(GaugeOpts{
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Name: "go_goroutines",
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Help: "Number of goroutines that currently exist.",
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}),
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gcDesc: NewDesc(
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"go_gc_duration_seconds",
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"A summary of the GC invocation durations.",
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nil, nil),
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}
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}
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// Describe returns all descriptions of the collector.
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func (c *goCollector) Describe(ch chan<- *Desc) {
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ch <- c.goroutines.Desc()
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ch <- c.gcDesc
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}
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// Collect returns the current state of all metrics of the collector.
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func (c *goCollector) Collect(ch chan<- Metric) {
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c.goroutines.Set(float64(runtime.NumGoroutine()))
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ch <- c.goroutines
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var stats debug.GCStats
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stats.PauseQuantiles = make([]time.Duration, 5)
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debug.ReadGCStats(&stats)
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quantiles := make(map[float64]float64)
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for idx, pq := range stats.PauseQuantiles[1:] {
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quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds()
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}
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quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
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ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles)
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}
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