9abd275607
The clientset will throw an error for aggregated apiservers because the clientset looks for specific versions of apis that are compiled into the client. These will be missing from aggregated apiservers. The discoveryclient is fully dynamic and does not rely on compiled in apiversions.
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
/*
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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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discoveryclient, err := f.DiscoveryClient()
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if err != nil {
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return err
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}
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groupList, err := discoveryclient.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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