kubernetes metrics 源码

2022-09-18
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kubernetes metrics 代码

文件路径：/pkg/controller/certificates/rootcacertpublisher/metrics.go

/*
Copyright 2020 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 rootcacertpublisher

import (
	"strconv"
	"sync"
	"time"

	apierrors "k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/component-base/metrics"
	"k8s.io/component-base/metrics/legacyregistry"
)

// RootCACertPublisher - subsystem name used by root_ca_cert_publisher
const RootCACertPublisher = "root_ca_cert_publisher"

var (
	syncCounter = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Subsystem:      RootCACertPublisher,
			Name:           "sync_total",
			Help:           "Number of namespace syncs happened in root ca cert publisher.",
			StabilityLevel: metrics.ALPHA,
		},
		[]string{"code"},
	)
	syncLatency = metrics.NewHistogramVec(
		&metrics.HistogramOpts{
			Subsystem:      RootCACertPublisher,
			Name:           "sync_duration_seconds",
			Help:           "Number of namespace syncs happened in root ca cert publisher.",
			Buckets:        metrics.ExponentialBuckets(0.001, 2, 15),
			StabilityLevel: metrics.ALPHA,
		},
		[]string{"code"},
	)
)

func recordMetrics(start time.Time, err error) {
	code := "500"
	if err == nil {
		code = "200"
	} else if se, ok := err.(*apierrors.StatusError); ok && se.Status().Code != 0 {
		code = strconv.Itoa(int(se.Status().Code))
	}
	syncLatency.WithLabelValues(code).Observe(time.Since(start).Seconds())
	syncCounter.WithLabelValues(code).Inc()
}

var once sync.Once

func registerMetrics() {
	once.Do(func() {
		legacyregistry.MustRegister(syncCounter)
		legacyregistry.MustRegister(syncLatency)
	})
}

相关信息

kubernetes 源码目录

相关文章

kubernetes metrics_test 源码

kubernetes publisher 源码

kubernetes publisher_test 源码

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所属分类： 后端技术
本文标签： golang docker
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