/
timer.go
248 lines (185 loc) · 4.96 KB
/
timer.go
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package metrics
import (
"sync"
"time"
)
type Timer interface {
Count() int64
Max() int64
Mean() float64
Min() int64
Percentile(float64) float64
Percentiles([]float64) []float64
Rate1() float64
Rate5() float64
Rate15() float64
RateMean() float64
Snapshot() Timer
StdDev() float64
Stop()
Sum() int64
Time(func())
Update(time.Duration)
UpdateSince(time.Time)
Variance() float64
}
func GetOrRegisterTimer(name string, r Registry) Timer {
if nil == r {
r = DefaultRegistry
}
return r.GetOrRegister(name, NewTimer).(Timer)
}
func NewCustomTimer(h Histogram, m Meter) Timer {
if !Enabled {
return NilTimer{}
}
return &StandardTimer{
histogram: h,
meter: m,
}
}
func NewRegisteredTimer(name string, r Registry) Timer {
c := NewTimer()
if nil == r {
r = DefaultRegistry
}
r.Register(name, c)
return c
}
func NewTimer() Timer {
if !Enabled {
return NilTimer{}
}
return &StandardTimer{
histogram: NewHistogram(NewExpDecaySample(1028, 0.015)),
meter: NewMeter(),
}
}
type NilTimer struct {
h Histogram
m Meter
}
func (NilTimer) Count() int64 { return 0 }
func (NilTimer) Max() int64 { return 0 }
func (NilTimer) Mean() float64 { return 0.0 }
func (NilTimer) Min() int64 { return 0 }
func (NilTimer) Percentile(p float64) float64 { return 0.0 }
func (NilTimer) Percentiles(ps []float64) []float64 {
return make([]float64, len(ps))
}
func (NilTimer) Rate1() float64 { return 0.0 }
func (NilTimer) Rate5() float64 { return 0.0 }
func (NilTimer) Rate15() float64 { return 0.0 }
func (NilTimer) RateMean() float64 { return 0.0 }
func (NilTimer) Snapshot() Timer { return NilTimer{} }
func (NilTimer) StdDev() float64 { return 0.0 }
func (NilTimer) Stop() {}
func (NilTimer) Sum() int64 { return 0 }
func (NilTimer) Time(func()) {}
func (NilTimer) Update(time.Duration) {}
func (NilTimer) UpdateSince(time.Time) {}
func (NilTimer) Variance() float64 { return 0.0 }
type StandardTimer struct {
histogram Histogram
meter Meter
mutex sync.Mutex
}
func (t *StandardTimer) Count() int64 {
return t.histogram.Count()
}
func (t *StandardTimer) Max() int64 {
return t.histogram.Max()
}
func (t *StandardTimer) Mean() float64 {
return t.histogram.Mean()
}
func (t *StandardTimer) Min() int64 {
return t.histogram.Min()
}
func (t *StandardTimer) Percentile(p float64) float64 {
return t.histogram.Percentile(p)
}
func (t *StandardTimer) Percentiles(ps []float64) []float64 {
return t.histogram.Percentiles(ps)
}
func (t *StandardTimer) Rate1() float64 {
return t.meter.Rate1()
}
func (t *StandardTimer) Rate5() float64 {
return t.meter.Rate5()
}
func (t *StandardTimer) Rate15() float64 {
return t.meter.Rate15()
}
func (t *StandardTimer) RateMean() float64 {
return t.meter.RateMean()
}
func (t *StandardTimer) Snapshot() Timer {
t.mutex.Lock()
defer t.mutex.Unlock()
return &TimerSnapshot{
histogram: t.histogram.Snapshot().(*HistogramSnapshot),
meter: t.meter.Snapshot().(*MeterSnapshot),
}
}
func (t *StandardTimer) StdDev() float64 {
return t.histogram.StdDev()
}
func (t *StandardTimer) Stop() {
t.meter.Stop()
}
func (t *StandardTimer) Sum() int64 {
return t.histogram.Sum()
}
func (t *StandardTimer) Time(f func()) {
ts := time.Now()
f()
t.Update(time.Since(ts))
}
func (t *StandardTimer) Update(d time.Duration) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.histogram.Update(int64(d))
t.meter.Mark(1)
}
func (t *StandardTimer) UpdateSince(ts time.Time) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.histogram.Update(int64(time.Since(ts)))
t.meter.Mark(1)
}
func (t *StandardTimer) Variance() float64 {
return t.histogram.Variance()
}
type TimerSnapshot struct {
histogram *HistogramSnapshot
meter *MeterSnapshot
}
func (t *TimerSnapshot) Count() int64 { return t.histogram.Count() }
func (t *TimerSnapshot) Max() int64 { return t.histogram.Max() }
func (t *TimerSnapshot) Mean() float64 { return t.histogram.Mean() }
func (t *TimerSnapshot) Min() int64 { return t.histogram.Min() }
func (t *TimerSnapshot) Percentile(p float64) float64 {
return t.histogram.Percentile(p)
}
func (t *TimerSnapshot) Percentiles(ps []float64) []float64 {
return t.histogram.Percentiles(ps)
}
func (t *TimerSnapshot) Rate1() float64 { return t.meter.Rate1() }
func (t *TimerSnapshot) Rate5() float64 { return t.meter.Rate5() }
func (t *TimerSnapshot) Rate15() float64 { return t.meter.Rate15() }
func (t *TimerSnapshot) RateMean() float64 { return t.meter.RateMean() }
func (t *TimerSnapshot) Snapshot() Timer { return t }
func (t *TimerSnapshot) StdDev() float64 { return t.histogram.StdDev() }
func (t *TimerSnapshot) Stop() {}
func (t *TimerSnapshot) Sum() int64 { return t.histogram.Sum() }
func (*TimerSnapshot) Time(func()) {
panic("Time called on a TimerSnapshot")
}
func (*TimerSnapshot) Update(time.Duration) {
panic("Update called on a TimerSnapshot")
}
func (*TimerSnapshot) UpdateSince(time.Time) {
panic("UpdateSince called on a TimerSnapshot")
}
func (t *TimerSnapshot) Variance() float64 { return t.histogram.Variance() }