1abc7107ca
Signed-off-by: irbekrm <irbekrm@gmail.com> Don't duplicate the existing ContextWithStopCh function Signed-off-by: irbekrm <irbekrm@gmail.com>
113 lines
2.8 KiB
Go
113 lines
2.8 KiB
Go
/*
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Copyright 2020 The cert-manager 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 version
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/spf13/cobra"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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cmdutil "k8s.io/kubectl/pkg/cmd/util"
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"sigs.k8s.io/yaml"
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"github.com/jetstack/cert-manager/pkg/util"
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)
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// Options is a struct to support version command
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type Options struct {
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// Output is the target output format for the version string. This may be of
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// value "", "json" or "yaml".
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Output string
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// If true, prints the version number.
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Short bool
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genericclioptions.IOStreams
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}
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// NewOptions returns initialized Options
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func NewOptions(ioStreams genericclioptions.IOStreams) *Options {
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return &Options{
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IOStreams: ioStreams,
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}
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}
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// NewCmdVersion returns a cobra command for fetching versions
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func NewCmdVersion(ctx context.Context, ioStreams genericclioptions.IOStreams) *cobra.Command {
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o := NewOptions(ioStreams)
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cmd := &cobra.Command{
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Use: "version",
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Short: "Print the kubectl cert-manager version",
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Long: "Print the kubectl cert-manager version",
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Run: func(cmd *cobra.Command, args []string) {
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cmdutil.CheckErr(o.Validate())
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cmdutil.CheckErr(o.Run())
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},
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}
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cmd.Flags().StringVarP(&o.Output, "output", "o", "", "One of '', 'yaml' or 'json'.")
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cmd.Flags().BoolVar(&o.Short, "short", false, "If true, print just the version number.")
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return cmd
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}
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// Validate validates the provided options
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func (o *Options) Validate() error {
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switch o.Output {
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case "", "yaml", "json":
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return nil
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default:
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return errors.New(`--output must be '', 'yaml' or 'json'`)
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}
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}
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// Run executes version command
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func (o *Options) Run() error {
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versionInfo := util.VersionInfo()
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switch o.Output {
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case "":
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if o.Short {
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fmt.Fprintf(o.Out, "%s\n", versionInfo.GitVersion)
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} else {
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fmt.Fprintf(o.Out, "%#v\n", versionInfo)
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}
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case "yaml":
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marshalled, err := yaml.Marshal(&versionInfo)
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if err != nil {
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return err
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}
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fmt.Fprint(o.Out, string(marshalled))
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case "json":
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marshalled, err := json.MarshalIndent(&versionInfo, "", " ")
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if err != nil {
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return err
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}
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fmt.Fprintln(o.Out, string(marshalled))
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default:
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// There is a bug in the program if we hit this case.
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// However, we follow a policy of never panicking.
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return fmt.Errorf("VersionOptions were not validated: --output=%q should have been rejected", o.Output)
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}
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return nil
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}
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