9e7f29c3fb
Some kubectl commands were deprecated but would fail to print the correct warning message when a flag was given before the command name. # Correctly prints the warning that "resize" is deprecated and # "scale" is now preferred. kubectl scale [...] # Should print the same warning but no warning is printed. kubectl --v=1 scale [...] This was due to a fragile check on os.Args[1]. This commit implements a new function deprecatedCmd() that is used to construct new "passthrough" commands which are marked as deprecated and hidden. Note that there is an existing "filters" system that may be preferable to the system created in this commit. I'm not sure why the "filters" array was not used for all deprecated commands in the first place.
69 lines
1.8 KiB
Go
69 lines
1.8 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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"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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"k8s.io/kubernetes/pkg/util/i18n"
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)
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var (
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apiversionsExample = templates.Examples(i18n.T(`
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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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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: apiversionsExample,
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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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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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