1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
// 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)
}
// RecordCountForValue adds count n for value to a histogram
func (m *CirconusMetrics) RecordCountForValue(metric string, val float64, n int64) {
hist := m.NewHistogram(metric)
m.hm.Lock()
hist.rw.Lock()
hist.hist.RecordValues(val, n)
hist.rw.Unlock()
m.hm.Unlock()
}
// 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()
}
|
