75 lines
2 KiB
Go
75 lines
2 KiB
Go
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"io"
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"os"
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"sort"
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"github.com/spf13/cobra"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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)
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var (
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apiversions_example = templates.Examples(`
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# Print the supported API versions
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kubectl api-versions`)
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)
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func NewCmdApiVersions(f cmdutil.Factory, out io.Writer) *cobra.Command {
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cmd := &cobra.Command{
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Use: "api-versions",
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// apiversions is deprecated.
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Aliases: []string{"apiversions"},
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Short: "Print the supported API versions on the server, in the form of \"group/version\"",
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Long: "Print the supported API versions on the server, in the form of \"group/version\"",
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Example: apiversions_example,
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Run: func(cmd *cobra.Command, args []string) {
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err := RunApiVersions(f, out)
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cmdutil.CheckErr(err)
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},
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}
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return cmd
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}
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func RunApiVersions(f cmdutil.Factory, w io.Writer) error {
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if len(os.Args) > 1 && os.Args[1] == "apiversions" {
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printDeprecationWarning("api-versions", "apiversions")
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}
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clientset, err := f.ClientSet()
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if err != nil {
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return err
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}
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groupList, err := clientset.Discovery().ServerGroups()
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if err != nil {
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return fmt.Errorf("Couldn't get available api versions from server: %v\n", err)
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}
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apiVersions := metav1.ExtractGroupVersions(groupList)
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sort.Strings(apiVersions)
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for _, v := range apiVersions {
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fmt.Fprintln(w, v)
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}
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return nil
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}
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