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118 lines
3.3 KiB
Go
118 lines
3.3 KiB
Go
/*
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Copyright 2016 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 rollout
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import (
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"fmt"
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"io"
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"github.com/renstrom/dedent"
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"k8s.io/kubernetes/pkg/kubectl"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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"github.com/spf13/cobra"
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)
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var (
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history_long = dedent.Dedent(`
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View previous rollout revisions and configurations.`)
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history_example = dedent.Dedent(`
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# View the rollout history of a deployment
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kubectl rollout history deployment/abc
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# View the details of deployment revision 3
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kubectl rollout history deployment/abc --revision=3`)
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)
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func NewCmdRolloutHistory(f cmdutil.Factory, out io.Writer) *cobra.Command {
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options := &resource.FilenameOptions{}
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validArgs := []string{"deployment"}
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argAliases := kubectl.ResourceAliases(validArgs)
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cmd := &cobra.Command{
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Use: "history (TYPE NAME | TYPE/NAME) [flags]",
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Short: "View rollout history",
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Long: history_long,
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Example: history_example,
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Run: func(cmd *cobra.Command, args []string) {
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cmdutil.CheckErr(RunHistory(f, cmd, out, args, options))
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},
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ValidArgs: validArgs,
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ArgAliases: argAliases,
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}
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cmd.Flags().Int64("revision", 0, "See the details, including podTemplate of the revision specified")
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usage := "identifying the resource to get from a server."
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cmdutil.AddFilenameOptionFlags(cmd, options, usage)
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return cmd
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}
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func RunHistory(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, args []string, options *resource.FilenameOptions) error {
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if len(args) == 0 && cmdutil.IsFilenameEmpty(options.Filenames) {
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return cmdutil.UsageError(cmd, "Required resource not specified.")
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}
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revision := cmdutil.GetFlagInt64(cmd, "revision")
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if revision < 0 {
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return fmt.Errorf("revision must be a positive integer: %v", revision)
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}
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mapper, typer := f.Object()
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cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
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if err != nil {
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return err
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}
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r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
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NamespaceParam(cmdNamespace).DefaultNamespace().
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FilenameParam(enforceNamespace, options).
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ResourceTypeOrNameArgs(true, args...).
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ContinueOnError().
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Latest().
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Flatten().
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Do()
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err = r.Err()
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if err != nil {
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return err
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}
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return r.Visit(func(info *resource.Info, err error) error {
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if err != nil {
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return err
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}
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mapping := info.ResourceMapping()
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historyViewer, err := f.HistoryViewer(mapping)
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if err != nil {
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return err
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}
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historyInfo, err := historyViewer.ViewHistory(info.Namespace, info.Name, revision)
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if err != nil {
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return err
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}
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header := fmt.Sprintf("%s %q", mapping.Resource, info.Name)
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if revision > 0 {
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header = fmt.Sprintf("%s with revision #%d", header, revision)
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}
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fmt.Fprintf(out, "%s\n", header)
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fmt.Fprintf(out, "%s\n", historyInfo)
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return nil
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})
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}
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