102 lines
2.3 KiB
Go
102 lines
2.3 KiB
Go
// Copyright 2016 Circonus, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package circonusgometrics
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import (
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"fmt"
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"sync"
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"github.com/circonus-labs/circonusllhist"
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)
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// Histogram measures the distribution of a stream of values.
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type Histogram struct {
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name string
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hist *circonusllhist.Histogram
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rw sync.RWMutex
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}
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// Timing adds a value to a histogram
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func (m *CirconusMetrics) Timing(metric string, val float64) {
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m.SetHistogramValue(metric, val)
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}
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// RecordValue adds a value to a histogram
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func (m *CirconusMetrics) RecordValue(metric string, val float64) {
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m.SetHistogramValue(metric, val)
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}
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// RecordCountForValue adds count n for value to a histogram
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func (m *CirconusMetrics) RecordCountForValue(metric string, val float64, n int64) {
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hist := m.NewHistogram(metric)
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m.hm.Lock()
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hist.rw.Lock()
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hist.hist.RecordValues(val, n)
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hist.rw.Unlock()
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m.hm.Unlock()
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}
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// SetHistogramValue adds a value to a histogram
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func (m *CirconusMetrics) SetHistogramValue(metric string, val float64) {
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hist := m.NewHistogram(metric)
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m.hm.Lock()
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hist.rw.Lock()
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hist.hist.RecordValue(val)
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hist.rw.Unlock()
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m.hm.Unlock()
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}
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// GetHistogramTest returns the current value for a gauge. (note: it is a function specifically for "testing", disable automatic submission during testing.)
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func (m *CirconusMetrics) GetHistogramTest(metric string) ([]string, error) {
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m.hm.Lock()
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defer m.hm.Unlock()
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if hist, ok := m.histograms[metric]; ok {
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return hist.hist.DecStrings(), nil
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}
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return []string{""}, fmt.Errorf("Histogram metric '%s' not found", metric)
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}
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// RemoveHistogram removes a histogram
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func (m *CirconusMetrics) RemoveHistogram(metric string) {
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m.hm.Lock()
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delete(m.histograms, metric)
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m.hm.Unlock()
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}
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// NewHistogram returns a histogram instance.
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func (m *CirconusMetrics) NewHistogram(metric string) *Histogram {
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m.hm.Lock()
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defer m.hm.Unlock()
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if hist, ok := m.histograms[metric]; ok {
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return hist
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}
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hist := &Histogram{
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name: metric,
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hist: circonusllhist.New(),
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}
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m.histograms[metric] = hist
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return hist
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}
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// Name returns the name from a histogram instance
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func (h *Histogram) Name() string {
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return h.name
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}
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// RecordValue records the given value to a histogram instance
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func (h *Histogram) RecordValue(v float64) {
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h.rw.Lock()
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h.hist.RecordValue(v)
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h.rw.Unlock()
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}
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