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f36c44be79
Automatic merge from submit-queue kubectl: enhance podtemplate describer @kubernetes/kubectl @smarterclayton for the dc decsriber
127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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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"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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"k8s.io/kubernetes/pkg/util/errors"
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"github.com/spf13/cobra"
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)
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// HistoryOptions is the start of the data required to perform the operation. As new fields are added, add them here instead of
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// referencing the cmd.Flags()
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type HistoryOptions struct {
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Filenames []string
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Recursive bool
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}
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const (
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history_long = `View previous rollout revisions and configurations.`
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history_example = `# 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 := &HistoryOptions{}
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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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}
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cmd.Flags().Int64("revision", 0, "See the details, including podTemplate of the revision specified")
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usage := "Filename, directory, or URL to a file identifying the resource to get from a server."
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kubectl.AddJsonFilenameFlag(cmd, &options.Filenames, usage)
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cmdutil.AddRecursiveFlag(cmd, &options.Recursive)
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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 *HistoryOptions) error {
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if len(args) == 0 && len(options.Filenames) == 0 {
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return cmdutil.UsageError(cmd, "Required resource not specified.")
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}
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revisionDetail := cmdutil.GetFlagInt64(cmd, "revision")
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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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infos, err := 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.Recursive, options.Filenames...).
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ResourceTypeOrNameArgs(true, args...).
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Latest().
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Flatten().
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Do().
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Infos()
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if err != nil {
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return err
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}
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errs := []error{}
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for _, info := range infos {
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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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errs = append(errs, err)
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continue
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}
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historyInfo, err := historyViewer.History(info.Namespace, info.Name)
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if err != nil {
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errs = append(errs, err)
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continue
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}
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if revisionDetail > 0 {
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// Print details of a specific revision
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template, ok := historyInfo.RevisionToTemplate[revisionDetail]
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if !ok {
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return fmt.Errorf("unable to find revision %d of %s %q", revisionDetail, mapping.Resource, info.Name)
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}
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fmt.Fprintf(out, "%s %q revision %d\n", mapping.Resource, info.Name, revisionDetail)
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kubectl.DescribePodTemplate(template, out)
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} else {
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// Print all revisions
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formattedOutput, printErr := kubectl.PrintRolloutHistory(historyInfo, mapping.Resource, info.Name)
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if printErr != nil {
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errs = append(errs, printErr)
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continue
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}
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fmt.Fprintf(out, "%s\n", formattedOutput)
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}
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}
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return errors.NewAggregate(errs)
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}
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