| /* |
| 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/kubernetes/pkg/kubectl/cmd/util" |
| "k8s.io/kubernetes/pkg/kubectl/util/i18n" |
| "k8s.io/kubernetes/pkg/kubectl/util/templates" |
| metricsapi "k8s.io/metrics/pkg/apis/metrics" |
| ) |
| |
| var ( |
| supportedMetricsAPIVersions = []string{ |
| "v1beta1", |
| } |
| topLong = templates.LongDesc(i18n.T(` |
| Display Resource (CPU/Memory/Storage) usage. |
| |
| The top command allows you to see the resource consumption for nodes or pods. |
| |
| This command requires Heapster 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/Storage) 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 |
| } |