137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
package volumes
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import (
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"context"
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"fmt"
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"os"
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"github.com/containers/common/pkg/completion"
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"github.com/containers/common/pkg/report"
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"github.com/containers/podman/v4/cmd/podman/common"
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"github.com/containers/podman/v4/cmd/podman/parse"
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"github.com/containers/podman/v4/cmd/podman/registry"
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"github.com/containers/podman/v4/cmd/podman/validate"
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"github.com/containers/podman/v4/libpod/define"
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"github.com/containers/podman/v4/pkg/domain/entities"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var (
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volumeLsDescription = `
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podman volume ls
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List all available volumes. The output of the volumes can be filtered
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and the output format can be changed to JSON or a user specified Go template.`
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lsCommand = &cobra.Command{
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Use: "ls [options]",
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Aliases: []string{"list"},
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Args: validate.NoArgs,
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Short: "List volumes",
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Long: volumeLsDescription,
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RunE: list,
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ValidArgsFunction: completion.AutocompleteNone,
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}
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)
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var (
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// Temporary struct to hold cli values.
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cliOpts = struct {
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Filter []string
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Format string
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Quiet bool
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}{}
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lsOpts = entities.VolumeListOptions{}
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: lsCommand,
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Parent: volumeCmd,
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})
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flags := lsCommand.Flags()
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filterFlagName := "filter"
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flags.StringSliceVarP(&cliOpts.Filter, filterFlagName, "f", []string{}, "Filter volume output")
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_ = lsCommand.RegisterFlagCompletionFunc(filterFlagName, common.AutocompleteVolumeFilters)
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formatFlagName := "format"
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flags.StringVar(&cliOpts.Format, formatFlagName, "{{.Driver}}\t{{.Name}}\n", "Format volume output using Go template")
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_ = lsCommand.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(define.InspectVolumeData{}))
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flags.Bool("noheading", false, "Do not print headers")
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flags.BoolVarP(&cliOpts.Quiet, "quiet", "q", false, "Print volume output in quiet mode")
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}
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func list(cmd *cobra.Command, args []string) error {
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var err error
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if cliOpts.Quiet && cmd.Flag("format").Changed {
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return errors.New("quiet and format flags cannot be used together")
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}
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if len(cliOpts.Filter) > 0 {
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lsOpts.Filter = make(map[string][]string)
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}
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lsOpts.Filter, err = parse.FilterArgumentsIntoFilters(cliOpts.Filter)
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if err != nil {
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return err
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}
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responses, err := registry.ContainerEngine().VolumeList(context.Background(), lsOpts)
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if err != nil {
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return err
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}
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switch {
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case report.IsJSON(cliOpts.Format):
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return outputJSON(responses)
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case len(responses) < 1:
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return nil
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}
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return outputTemplate(cmd, responses)
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}
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func outputTemplate(cmd *cobra.Command, responses []*entities.VolumeListReport) error {
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noHeading, _ := cmd.Flags().GetBool("noheading")
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headers := report.Headers(entities.VolumeListReport{}, map[string]string{
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"Name": "VOLUME NAME",
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})
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var row string
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switch {
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case cliOpts.Quiet:
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row = "{{.Name}}\n"
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case cmd.Flags().Changed("format"):
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row = report.NormalizeFormat(cliOpts.Format)
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default:
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row = cmd.Flag("format").Value.String()
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}
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format := report.EnforceRange(row)
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tmpl, err := report.NewTemplate("list").Parse(format)
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if err != nil {
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return err
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}
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w, err := report.NewWriterDefault(os.Stdout)
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if err != nil {
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return err
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}
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defer w.Flush()
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if !(noHeading || cliOpts.Quiet || cmd.Flag("format").Changed) {
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if err := tmpl.Execute(w, headers); err != nil {
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return errors.Wrapf(err, "failed to write report column headers")
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}
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}
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return tmpl.Execute(w, responses)
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}
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func outputJSON(vols []*entities.VolumeListReport) error {
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b, err := json.MarshalIndent(vols, "", " ")
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if err != nil {
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return err
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}
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fmt.Println(string(b))
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return nil
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}
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