vendor files

vendor/k8s.io/kubernetes/pkg/kubectl/cmd/apiversions.go

@@ -0,0 +1,71 @@
+/*
+Copyright 2014 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 cmd
+
+import (
+	"fmt"
+	"io"
+	"sort"
+
+	"github.com/spf13/cobra"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
+	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
+	"k8s.io/kubernetes/pkg/kubectl/util/i18n"
+)
+
+var (
+	apiversionsExample = templates.Examples(i18n.T(`
+		# Print the supported API versions
+		kubectl api-versions`))
+)
+
+func NewCmdApiVersions(f cmdutil.Factory, out io.Writer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "api-versions",
+		Short:   "Print the supported API versions on the server, in the form of \"group/version\"",
+		Long:    "Print the supported API versions on the server, in the form of \"group/version\"",
+		Example: apiversionsExample,
+		Run: func(cmd *cobra.Command, args []string) {
+			err := RunApiVersions(f, out)
+			cmdutil.CheckErr(err)
+		},
+	}
+	return cmd
+}
+
+func RunApiVersions(f cmdutil.Factory, w io.Writer) error {
+	discoveryclient, err := f.DiscoveryClient()
+	if err != nil {
+		return err
+	}
+
+	// Always request fresh data from the server
+	discoveryclient.Invalidate()
+
+	groupList, err := discoveryclient.ServerGroups()
+	if err != nil {
+		return fmt.Errorf("Couldn't get available api versions from server: %v\n", err)
+	}
+	apiVersions := metav1.ExtractGroupVersions(groupList)
+	sort.Strings(apiVersions)
+	for _, v := range apiVersions {
+		fmt.Fprintln(w, v)
+	}
+	return nil
+}