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add --list option to label cmd

pull/6/head
juanvallejo 2017-09-05 15:28:32 -04:00
parent 775f5d232d
commit 5b3b3aed9e
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GPG Key ID: 7D2C958002D6448D
1 changed files with 23 additions and 2 deletions
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25
pkg/kubectl/cmd/label.go
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@ -49,6 +49,7 @@ type LabelOptions struct {
// Common user flags
overwrite bool
list bool
local bool
dryrun bool
all bool
@ -127,6 +128,7 @@ func NewCmdLabel(f cmdutil.Factory, out io.Writer) *cobra.Command {
}
cmdutil.AddPrinterFlags(cmd)
cmd.Flags().Bool("overwrite", false, "If true, allow labels to be overwritten, otherwise reject label updates that overwrite existing labels.")
cmd.Flags().BoolVar(&options.list, "list", options.list, "If true, display the labels for a given resource.")
cmd.Flags().Bool("local", false, "If true, label will NOT contact api-server but run locally.")
cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on, not including uninitialized ones, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2).")
cmd.Flags().Bool("all", false, "Select all resources, including uninitialized ones, in the namespace of the specified resource types")
@ -144,6 +146,7 @@ func NewCmdLabel(f cmdutil.Factory, out io.Writer) *cobra.Command {
// Complete adapts from the command line args and factory to the data required.
func (o *LabelOptions) Complete(out io.Writer, cmd *cobra.Command, args []string) (err error) {
o.out = out
o.list = cmdutil.GetFlagBool(cmd, "list")
o.local = cmdutil.GetFlagBool(cmd, "local")
o.overwrite = cmdutil.GetFlagBool(cmd, "overwrite")
o.all = cmdutil.GetFlagBool(cmd, "all")
@ -158,6 +161,11 @@ func (o *LabelOptions) Complete(out io.Writer, cmd *cobra.Command, args []string
}
o.resources = resources
o.newLabels, o.removeLabels, err = parseLabels(labelArgs)
if o.list && len(o.outputFormat) > 0 {
return cmdutil.UsageErrorf(cmd, "--list and --output may not be specified together")
}
return err
}
@ -166,7 +174,7 @@ func (o *LabelOptions) Validate() error {
if len(o.resources) < 1 && cmdutil.IsFilenameSliceEmpty(o.FilenameOptions.Filenames) {
return fmt.Errorf("one or more resources must be specified as <resource> <name> or <resource>/<name>")
}
if len(o.newLabels) < 1 && len(o.removeLabels) < 1 {
if len(o.newLabels) < 1 && len(o.removeLabels) < 1 && !o.list {
return fmt.Errorf("at least one label update is required")
}
return nil
@ -218,7 +226,7 @@ func (o *LabelOptions) RunLabel(f cmdutil.Factory, cmd *cobra.Command) error {
var outputObj runtime.Object
dataChangeMsg := "not labeled"
if o.dryrun || o.local {
if o.dryrun || o.local || o.list {
err = labelFunc(info.Object, o.overwrite, o.resourceVersion, o.newLabels, o.removeLabels)
if err != nil {
return err
@ -280,6 +288,19 @@ func (o *LabelOptions) RunLabel(f cmdutil.Factory, cmd *cobra.Command) error {
}
}
if o.list {
accessor, err := meta.Accessor(outputObj)
if err != nil {
return err
}
for k, v := range accessor.GetLabels() {
fmt.Fprintf(o.out, "%s=%s\n", k, v)
}
return nil
}
var mapper meta.RESTMapper
if o.local {
mapper, _ = f.Object()