/
go_collector_latest.go
160 lines (144 loc) · 6.91 KB
/
go_collector_latest.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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
// Copyright 2021 The Prometheus 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.
//go:build go1.17
// +build go1.17
package collectors
import (
"regexp"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/internal"
)
var (
// MetricsAll allows all the metrics to be collected from Go runtime.
MetricsAll = GoRuntimeMetricsRule{regexp.MustCompile("/.*")}
// MetricsGC allows only GC metrics to be collected from Go runtime.
// e.g. go_gc_cycles_automatic_gc_cycles_total
MetricsGC = GoRuntimeMetricsRule{regexp.MustCompile(`^/gc/.*`)}
// MetricsMemory allows only memory metrics to be collected from Go runtime.
// e.g. go_memory_classes_heap_free_bytes
MetricsMemory = GoRuntimeMetricsRule{regexp.MustCompile(`^/memory/.*`)}
// MetricsScheduler allows only scheduler metrics to be collected from Go runtime.
// e.g. go_sched_goroutines_goroutines
MetricsScheduler = GoRuntimeMetricsRule{regexp.MustCompile(`^/sched/.*`)}
)
// WithGoCollectorMemStatsMetricsDisabled disables metrics that is gathered in runtime.MemStats structure such as:
//
// go_memstats_alloc_bytes
// go_memstats_alloc_bytes_total
// go_memstats_sys_bytes
// go_memstats_lookups_total
// go_memstats_mallocs_total
// go_memstats_frees_total
// go_memstats_heap_alloc_bytes
// go_memstats_heap_sys_bytes
// go_memstats_heap_idle_bytes
// go_memstats_heap_inuse_bytes
// go_memstats_heap_released_bytes
// go_memstats_heap_objects
// go_memstats_stack_inuse_bytes
// go_memstats_stack_sys_bytes
// go_memstats_mspan_inuse_bytes
// go_memstats_mspan_sys_bytes
// go_memstats_mcache_inuse_bytes
// go_memstats_mcache_sys_bytes
// go_memstats_buck_hash_sys_bytes
// go_memstats_gc_sys_bytes
// go_memstats_other_sys_bytes
// go_memstats_next_gc_bytes
//
// so the metrics known from pre client_golang v1.12.0,
//
// NOTE(bwplotka): The above represents runtime.MemStats statistics, but they are
// actually implemented using new runtime/metrics package. (except skipped go_memstats_gc_cpu_fraction
// -- see https://github.com/prometheus/client_golang/issues/842#issuecomment-861812034 for explanation).
//
// Some users might want to disable this on collector level (although you can use scrape relabelling on Prometheus),
// because similar metrics can be now obtained using WithGoCollectorRuntimeMetrics. Note that the semantics of new
// metrics might be different, plus the names can be change over time with different Go version.
//
// NOTE(bwplotka): Changing metric names can be tedious at times as the alerts, recording rules and dashboards have to be adjusted.
// The old metrics are also very useful, with many guides and books written about how to interpret them.
//
// As a result our recommendation would be to stick with MemStats like metrics and enable other runtime/metrics if you are interested
// in advanced insights Go provides. See ExampleGoCollector_WithAdvancedGoMetrics.
func WithGoCollectorMemStatsMetricsDisabled() func(options *internal.GoCollectorOptions) {
return func(o *internal.GoCollectorOptions) {
o.DisableMemStatsLikeMetrics = true
}
}
// GoRuntimeMetricsRule allow enabling and configuring particular group of runtime/metrics.
// TODO(bwplotka): Consider adding ability to adjust buckets.
type GoRuntimeMetricsRule struct {
// Matcher represents RE2 expression will match the runtime/metrics from https://golang.bg/src/runtime/metrics/description.go
// Use `regexp.MustCompile` or `regexp.Compile` to create this field.
Matcher *regexp.Regexp
}
// WithGoCollectorRuntimeMetrics allows enabling and configuring particular group of runtime/metrics.
// See the list of metrics https://golang.bg/src/runtime/metrics/description.go (pick the Go version you use there!).
// You can use this option in repeated manner, which will add new rules. The order of rules is important, the last rule
// that matches particular metrics is applied.
func WithGoCollectorRuntimeMetrics(rules ...GoRuntimeMetricsRule) func(options *internal.GoCollectorOptions) {
rs := make([]internal.GoCollectorRule, len(rules))
for i, r := range rules {
rs[i] = internal.GoCollectorRule{
Matcher: r.Matcher,
}
}
return func(o *internal.GoCollectorOptions) {
o.RuntimeMetricRules = append(o.RuntimeMetricRules, rs...)
}
}
// WithoutGoCollectorRuntimeMetrics allows disabling group of runtime/metrics that you might have added in WithGoCollectorRuntimeMetrics.
// It behaves similarly to WithGoCollectorRuntimeMetrics just with deny-list semantics.
func WithoutGoCollectorRuntimeMetrics(matchers ...*regexp.Regexp) func(options *internal.GoCollectorOptions) {
rs := make([]internal.GoCollectorRule, len(matchers))
for i, m := range matchers {
rs[i] = internal.GoCollectorRule{
Matcher: m,
Deny: true,
}
}
return func(o *internal.GoCollectorOptions) {
o.RuntimeMetricRules = append(o.RuntimeMetricRules, rs...)
}
}
// GoCollectionOption represents Go collection option flag.
// Deprecated.
type GoCollectionOption uint32
const (
// GoRuntimeMemStatsCollection represents the metrics represented by runtime.MemStats structure.
// Deprecated. Use WithGoCollectorMemStatsMetricsDisabled() function to disable those metrics in the collector.
GoRuntimeMemStatsCollection GoCollectionOption = 1 << iota
// GoRuntimeMetricsCollection is the new set of metrics represented by runtime/metrics package.
// Deprecated. Use WithGoCollectorRuntimeMetrics(GoRuntimeMetricsRule{Matcher: regexp.MustCompile("/.*")})
// function to enable those metrics in the collector.
GoRuntimeMetricsCollection
)
// WithGoCollections allows enabling different collections for Go collector on top of base metrics.
// Deprecated. Use WithGoCollectorRuntimeMetrics() and WithGoCollectorMemStatsMetricsDisabled() instead to control metrics.
func WithGoCollections(flags GoCollectionOption) func(options *internal.GoCollectorOptions) {
return func(options *internal.GoCollectorOptions) {
if flags&GoRuntimeMemStatsCollection == 0 {
WithGoCollectorMemStatsMetricsDisabled()(options)
}
if flags&GoRuntimeMetricsCollection != 0 {
WithGoCollectorRuntimeMetrics(GoRuntimeMetricsRule{Matcher: regexp.MustCompile("/.*")})(options)
}
}
}
// NewGoCollector returns a collector that exports metrics about the current Go
// process using debug.GCStats (base metrics) and runtime/metrics (both in MemStats style and new ones).
func NewGoCollector(opts ...func(o *internal.GoCollectorOptions)) prometheus.Collector {
//nolint:staticcheck // Ignore SA1019 until v2.
return prometheus.NewGoCollector(opts...)
}