91 lines
2.8 KiB
Go
91 lines
2.8 KiB
Go
/*
|
|
* Copyright 2024 the KubeSphere Authors.
|
|
* Please refer to the LICENSE file in the root directory of the project.
|
|
* https://github.com/kubesphere/kubesphere/blob/master/LICENSE
|
|
*/
|
|
|
|
package metrics
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/emicklei/go-restful/v3"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/client_golang/prometheus/collectors"
|
|
"github.com/prometheus/client_golang/prometheus/promhttp"
|
|
apimachineryversion "k8s.io/apimachinery/pkg/version"
|
|
componentbasemetrics "k8s.io/component-base/metrics"
|
|
|
|
ksVersion "kubesphere.io/kubesphere/pkg/version"
|
|
)
|
|
|
|
var (
|
|
registerOnce sync.Once
|
|
|
|
Registry = componentbasemetrics.NewKubeRegistry()
|
|
|
|
RequestCounter = componentbasemetrics.NewCounterVec(
|
|
&componentbasemetrics.CounterOpts{
|
|
Name: "ks_server_request_total",
|
|
Help: "Counter of ks_server requests broken out for each verb, group, version, resource and HTTP response code.",
|
|
StabilityLevel: componentbasemetrics.ALPHA,
|
|
},
|
|
[]string{"verb", "group", "version", "resource", "code"},
|
|
)
|
|
|
|
RequestLatencies = componentbasemetrics.NewHistogramVec(
|
|
&componentbasemetrics.HistogramOpts{
|
|
Name: "ks_server_request_duration_seconds",
|
|
Help: "Response latency distribution in seconds for each verb, group, version, resource",
|
|
// This metric is used for verifying api call latencies SLO,
|
|
// as well as tracking regressions in this aspects.
|
|
// Thus we customize buckets significantly, to empower both usecases.
|
|
Buckets: []float64{0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,
|
|
1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60},
|
|
StabilityLevel: componentbasemetrics.ALPHA,
|
|
},
|
|
[]string{"verb", "group", "version", "resource"},
|
|
)
|
|
|
|
metricsList = []componentbasemetrics.Registerable{
|
|
RequestCounter,
|
|
RequestLatencies,
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
componentbasemetrics.BuildVersion = versionGet
|
|
}
|
|
|
|
func versionGet() apimachineryversion.Info {
|
|
info := ksVersion.Get()
|
|
return apimachineryversion.Info{
|
|
Major: info.GitMajor,
|
|
Minor: info.GitMinor,
|
|
GitVersion: info.GitVersion,
|
|
GitCommit: info.GitCommit,
|
|
GitTreeState: info.GitTreeState,
|
|
BuildDate: info.BuildDate,
|
|
GoVersion: info.GoVersion,
|
|
Compiler: info.Compiler,
|
|
Platform: info.Platform,
|
|
}
|
|
}
|
|
|
|
func registerMetrics() {
|
|
Registry.Registerer().MustRegister(collectors.NewGoCollector())
|
|
Registry.Registerer().MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}))
|
|
|
|
for _, m := range metricsList {
|
|
Registry.MustRegister(m)
|
|
}
|
|
}
|
|
|
|
func Install(c *restful.Container) {
|
|
registerOnce.Do(registerMetrics)
|
|
c.Handle(
|
|
"/metrics",
|
|
promhttp.InstrumentMetricHandler(prometheus.NewRegistry(), promhttp.HandlerFor(Registry, promhttp.HandlerOpts{})),
|
|
)
|
|
}
|