kubernetes top 源码

2022-09-18
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kubernetes top 代码

文件路径：/staging/src/k8s.io/kubectl/pkg/cmd/top/top.go

/*
Copyright 2016 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 top

import (
	"github.com/spf13/cobra"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/cli-runtime/pkg/genericclioptions"
	cmdutil "k8s.io/kubectl/pkg/cmd/util"
	"k8s.io/kubectl/pkg/util/i18n"
	"k8s.io/kubectl/pkg/util/templates"
	metricsapi "k8s.io/metrics/pkg/apis/metrics"
)

const (
	sortByCPU    = "cpu"
	sortByMemory = "memory"
)

var (
	supportedMetricsAPIVersions = []string{
		"v1beta1",
	}
	topLong = templates.LongDesc(i18n.T(`
		Display Resource (CPU/Memory) usage.

		The top command allows you to see the resource consumption for nodes or pods.

		This command requires Metrics Server to be correctly configured and working on the server. `))
)

func NewCmdTop(f cmdutil.Factory, streams genericclioptions.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "top",
		Short: i18n.T("Display resource (CPU/memory) usage"),
		Long:  topLong,
		Run:   cmdutil.DefaultSubCommandRun(streams.ErrOut),
	}

	// create subcommands
	cmd.AddCommand(NewCmdTopNode(f, nil, streams))
	cmd.AddCommand(NewCmdTopPod(f, nil, streams))

	return cmd
}

func SupportedMetricsAPIVersionAvailable(discoveredAPIGroups *metav1.APIGroupList) bool {
	for _, discoveredAPIGroup := range discoveredAPIGroups.Groups {
		if discoveredAPIGroup.Name != metricsapi.GroupName {
			continue
		}
		for _, version := range discoveredAPIGroup.Versions {
			for _, supportedVersion := range supportedMetricsAPIVersions {
				if version.Version == supportedVersion {
					return true
				}
			}
		}
	}
	return false
}

相关信息

kubernetes 源码目录

相关文章

kubernetes top_node 源码

kubernetes top_node_test 源码

kubernetes top_pod 源码

kubernetes top_pod_test 源码

kubernetes top_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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