Merge pull request #5852 from baude/v1prune

Podman V2 birth

1 files changed, 98 insertions, 0 deletions

diff --git a/cmd/podman/volumes/list.go b/cmd/podman/volumes/list.go
new file mode 100644
index 000000000..fd89db01f
--- /dev/null
+++ b/cmd/podman/volumes/list.go
@@ -0,0 +1,98 @@
+package volumes
+
+import (
+	"context"
+	"html/template"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	volumeLsDescription = `
+podman volume ls
+
+List all available volumes. The output of the volumes can be filtered
+and the output format can be changed to JSON or a user specified Go template.`
+	lsCommand = &cobra.Command{
+		Use:     "ls",
+		Aliases: []string{"list"},
+		Args:    cobra.NoArgs,
+		Short:   "List volumes",
+		Long:    volumeLsDescription,
+		RunE:    list,
+	}
+)
+
+var (
+	// Temporary struct to hold cli values.
+	cliOpts = struct {
+		Filter []string
+		Format string
+		Quiet  bool
+	}{}
+	lsOpts = entities.VolumeListOptions{}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: lsCommand,
+		Parent:  volumeCmd,
+	})
+	flags := lsCommand.Flags()
+	flags.StringSliceVarP(&cliOpts.Filter, "filter", "f", []string{}, "Filter volume output")
+	flags.StringVar(&cliOpts.Format, "format", "{{.Driver}}\t{{.Name}}\n", "Format volume output using Go template")
+	flags.BoolVarP(&cliOpts.Quiet, "quiet", "q", false, "Print volume output in quiet mode")
+}
+
+func list(cmd *cobra.Command, args []string) error {
+	var w io.Writer = os.Stdout
+	if cliOpts.Quiet && cmd.Flag("format").Changed {
+		return errors.New("quiet and format flags cannot be used together")
+	}
+	for _, f := range cliOpts.Filter {
+		filterSplit := strings.Split(f, "=")
+		if len(filterSplit) < 2 {
+			return errors.Errorf("filter input must be in the form of filter=value: %s is invalid", f)
+		}
+		lsOpts.Filter[filterSplit[0]] = append(lsOpts.Filter[filterSplit[0]], filterSplit[1:]...)
+	}
+	responses, err := registry.ContainerEngine().VolumeList(context.Background(), lsOpts)
+	if err != nil {
+		return err
+	}
+	// "\t" from the command line is not being recognized as a tab
+	// replacing the string "\t" to a tab character if the user passes in "\t"
+	cliOpts.Format = strings.Replace(cliOpts.Format, `\t`, "\t", -1)
+	if cliOpts.Quiet {
+		cliOpts.Format = "{{.Name}}\n"
+	}
+	headers := "DRIVER\tVOLUME NAME\n"
+	row := cliOpts.Format
+	if !strings.HasSuffix(cliOpts.Format, "\n") {
+		row += "\n"
+	}
+	format := "{{range . }}" + row + "{{end}}"
+	if !cliOpts.Quiet && !cmd.Flag("format").Changed {
+		w = tabwriter.NewWriter(os.Stdout, 12, 2, 2, ' ', 0)
+		format = headers + format
+	}
+	tmpl, err := template.New("listVolume").Parse(format)
+	if err != nil {
+		return err
+	}
+	if err := tmpl.Execute(w, responses); err != nil {
+		return err
+	}
+	if flusher, ok := w.(interface{ Flush() error }); ok {
+		return flusher.Flush()
+	}
+	return nil
+}