forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
metrics.go
113 lines (97 loc) · 3.12 KB
/
metrics.go
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
102
103
104
105
106
107
108
109
110
111
112
113
/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package metrics
import (
"sync"
"time"
"github.com/prometheus/client_golang/prometheus"
)
var (
cacheHitCounter = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "etcd_helper_cache_hit_count",
Help: "Counter of etcd helper cache hits.",
},
)
cacheMissCounter = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "etcd_helper_cache_miss_count",
Help: "Counter of etcd helper cache miss.",
},
)
cacheEntryCounter = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "etcd_helper_cache_entry_count",
Help: "Counter of etcd helper cache entries. This can be different from etcd_helper_cache_miss_count " +
"because two concurrent threads can miss the cache and generate the same entry twice.",
},
)
cacheGetLatency = prometheus.NewSummary(
prometheus.SummaryOpts{
Name: "etcd_request_cache_get_latencies_summary",
Help: "Latency in microseconds of getting an object from etcd cache",
},
)
cacheAddLatency = prometheus.NewSummary(
prometheus.SummaryOpts{
Name: "etcd_request_cache_add_latencies_summary",
Help: "Latency in microseconds of adding an object to etcd cache",
},
)
etcdRequestLatenciesSummary = prometheus.NewSummaryVec(
prometheus.SummaryOpts{
Name: "etcd_request_latencies_summary",
Help: "Etcd request latency summary in microseconds for each operation and object type.",
},
[]string{"operation", "type"},
)
)
var registerMetrics sync.Once
// Register all metrics.
func Register() {
// Register the metrics.
registerMetrics.Do(func() {
prometheus.MustRegister(cacheHitCounter)
prometheus.MustRegister(cacheMissCounter)
prometheus.MustRegister(cacheEntryCounter)
prometheus.MustRegister(cacheAddLatency)
prometheus.MustRegister(cacheGetLatency)
prometheus.MustRegister(etcdRequestLatenciesSummary)
})
}
func RecordEtcdRequestLatency(verb, resource string, startTime time.Time) {
etcdRequestLatenciesSummary.WithLabelValues(verb, resource).Observe(float64(time.Since(startTime) / time.Microsecond))
}
func ObserveGetCache(startTime time.Time) {
cacheGetLatency.Observe(float64(time.Since(startTime) / time.Microsecond))
}
func ObserveAddCache(startTime time.Time) {
cacheAddLatency.Observe(float64(time.Since(startTime) / time.Microsecond))
}
func ObserveCacheHit() {
cacheHitCounter.Inc()
}
func ObserveCacheMiss() {
cacheMissCounter.Inc()
}
func ObserveNewEntry() {
cacheEntryCounter.Inc()
}
func Reset() {
cacheHitCounter.Set(0)
cacheMissCounter.Set(0)
cacheEntryCounter.Set(0)
// TODO: Reset cacheAddLatency.
// TODO: Reset cacheGetLatency.
etcdRequestLatenciesSummary.Reset()
}