91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
// Copyright 2016 Circonus, Inc. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package circonusgometrics
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/circonus-labs/circonusllhist"
|
|
)
|
|
|
|
// Histogram measures the distribution of a stream of values.
|
|
type Histogram struct {
|
|
name string
|
|
hist *circonusllhist.Histogram
|
|
rw sync.RWMutex
|
|
}
|
|
|
|
// Timing adds a value to a histogram
|
|
func (m *CirconusMetrics) Timing(metric string, val float64) {
|
|
m.SetHistogramValue(metric, val)
|
|
}
|
|
|
|
// RecordValue adds a value to a histogram
|
|
func (m *CirconusMetrics) RecordValue(metric string, val float64) {
|
|
m.SetHistogramValue(metric, val)
|
|
}
|
|
|
|
// SetHistogramValue adds a value to a histogram
|
|
func (m *CirconusMetrics) SetHistogramValue(metric string, val float64) {
|
|
hist := m.NewHistogram(metric)
|
|
|
|
m.hm.Lock()
|
|
hist.rw.Lock()
|
|
hist.hist.RecordValue(val)
|
|
hist.rw.Unlock()
|
|
m.hm.Unlock()
|
|
}
|
|
|
|
// GetHistogramTest returns the current value for a gauge. (note: it is a function specifically for "testing", disable automatic submission during testing.)
|
|
func (m *CirconusMetrics) GetHistogramTest(metric string) ([]string, error) {
|
|
m.hm.Lock()
|
|
defer m.hm.Unlock()
|
|
|
|
if hist, ok := m.histograms[metric]; ok {
|
|
return hist.hist.DecStrings(), nil
|
|
}
|
|
|
|
return []string{""}, fmt.Errorf("Histogram metric '%s' not found", metric)
|
|
}
|
|
|
|
// RemoveHistogram removes a histogram
|
|
func (m *CirconusMetrics) RemoveHistogram(metric string) {
|
|
m.hm.Lock()
|
|
delete(m.histograms, metric)
|
|
m.hm.Unlock()
|
|
}
|
|
|
|
// NewHistogram returns a histogram instance.
|
|
func (m *CirconusMetrics) NewHistogram(metric string) *Histogram {
|
|
m.hm.Lock()
|
|
defer m.hm.Unlock()
|
|
|
|
if hist, ok := m.histograms[metric]; ok {
|
|
return hist
|
|
}
|
|
|
|
hist := &Histogram{
|
|
name: metric,
|
|
hist: circonusllhist.New(),
|
|
}
|
|
|
|
m.histograms[metric] = hist
|
|
|
|
return hist
|
|
}
|
|
|
|
// Name returns the name from a histogram instance
|
|
func (h *Histogram) Name() string {
|
|
return h.name
|
|
}
|
|
|
|
// RecordValue records the given value to a histogram instance
|
|
func (h *Histogram) RecordValue(v float64) {
|
|
h.rw.Lock()
|
|
h.hist.RecordValue(v)
|
|
h.rw.Unlock()
|
|
}
|