forked from mirror/client_golang
unembed memstats collector
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c945ed62c1
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@ -11,13 +11,17 @@ type goCollector struct {
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goroutines Gauge
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goroutines Gauge
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gcDesc *Desc
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gcDesc *Desc
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memstats *memStatCollector
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// memstats object to reuse
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ms *runtime.MemStats
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// metrics to describe and collect
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metrics memStatsMetrics
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}
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}
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// NewGoCollector returns a collector which exports metrics about the current
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// NewGoCollector returns a collector which exports metrics about the current
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// go process.
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// go process.
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func NewGoCollector() *goCollector {
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func NewGoCollector() *goCollector {
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return &goCollector{
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return &goCollector{
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ms: new(runtime.MemStats),
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goroutines: NewGauge(GaugeOpts{
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goroutines: NewGauge(GaugeOpts{
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Namespace: "go",
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Namespace: "go",
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Name: "goroutines",
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Name: "goroutines",
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@ -27,8 +31,6 @@ func NewGoCollector() *goCollector {
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"go_gc_duration_seconds",
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"go_gc_duration_seconds",
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"A summary of the GC invocation durations.",
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"A summary of the GC invocation durations.",
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nil, nil),
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nil, nil),
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memstats: &memStatCollector{
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ms: new(runtime.MemStats),
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metrics: memStatsMetrics{
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metrics: memStatsMetrics{
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{
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{
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desc: NewDesc(
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desc: NewDesc(
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@ -232,7 +234,6 @@ func NewGoCollector() *goCollector {
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valType: CounterValue,
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valType: CounterValue,
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},
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},
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},
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},
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},
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}
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}
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}
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}
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@ -245,7 +246,9 @@ func (c *goCollector) Describe(ch chan<- *Desc) {
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ch <- c.goroutines.Desc()
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ch <- c.goroutines.Desc()
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ch <- c.gcDesc
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ch <- c.gcDesc
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c.memstats.Describe(ch)
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for _, i := range c.metrics {
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ch <- i.desc
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}
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}
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}
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// Collect returns the current state of all metrics of the collector.
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// Collect returns the current state of all metrics of the collector.
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@ -264,32 +267,15 @@ func (c *goCollector) Collect(ch chan<- Metric) {
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quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
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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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ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles)
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c.memstats.Collect(ch)
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}
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// metrics that provide description, value, and value type for memstat metrics
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type memStatsMetrics []struct {
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desc *Desc
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eval func(*runtime.MemStats) float64
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valType ValueType
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}
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type memStatCollector struct {
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// memstats object to reuse
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ms *runtime.MemStats
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// metrics to describe and collect
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metrics memStatsMetrics
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}
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func (c *memStatCollector) Describe(ch chan<- *Desc) {
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for _, i := range c.metrics {
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ch <- i.desc
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}
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}
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func (c *memStatCollector) Collect(ch chan<- Metric) {
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runtime.ReadMemStats(c.ms)
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runtime.ReadMemStats(c.ms)
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for _, i := range c.metrics {
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for _, i := range c.metrics {
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ch <- MustNewConstMetric(i.desc, i.valType, i.eval(c.ms))
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ch <- MustNewConstMetric(i.desc, i.valType, i.eval(c.ms))
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}
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}
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}
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}
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// memStatsMetrics provide description, value, and value type for memstat metrics
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type memStatsMetrics []struct {
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desc *Desc
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eval func(*runtime.MemStats) float64
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valType ValueType
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}
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