Add "podman volume" command

Add support for podman volume and its subcommands.
The commands supported are:
	podman volume create
	podman volume inspect
	podman volume ls
	podman volume rm
	podman volume prune

This is a tool to manage volumes used by podman. For now it only handle
named volumes, but eventually it will handle all volumes used by podman.

Signed-off-by: umohnani8 <umohnani@redhat.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/cmd/podman/volume_rm.go b/cmd/podman/volume_rm.go
new file mode 100644
index 000000000..3fb623624
--- /dev/null
+++ b/cmd/podman/volume_rm.go
@@ -0,0 +1,71 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/containers/libpod/cmd/podman/libpodruntime"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+var volumeRmDescription = `
+podman volume rm
+
+Remove one or more existing volumes. Will only remove volumes that are
+not being used by any containers. To remove the volumes anyways, use the
+--force flag.
+`
+
+var volumeRmFlags = []cli.Flag{
+	cli.BoolFlag{
+		Name:  "all, a",
+		Usage: "Remove all volumes",
+	},
+	cli.BoolFlag{
+		Name:  "force, f",
+		Usage: "Remove a volume by force, even if it is being used by a container",
+	},
+}
+
+var volumeRmCommand = cli.Command{
+	Name:                   "rm",
+	Aliases:                []string{"remove"},
+	Usage:                  "Remove one or more volumes",
+	Description:            volumeRmDescription,
+	Flags:                  volumeRmFlags,
+	Action:                 volumeRmCmd,
+	ArgsUsage:              "[VOLUME-NAME ...]",
+	SkipArgReorder:         true,
+	UseShortOptionHandling: true,
+}
+
+func volumeRmCmd(c *cli.Context) error {
+	var err error
+
+	if err = validateFlags(c, volumeRmFlags); err != nil {
+		return err
+	}
+
+	runtime, err := libpodruntime.GetRuntime(c)
+	if err != nil {
+		return errors.Wrapf(err, "error creating libpod runtime")
+	}
+	defer runtime.Shutdown(false)
+
+	ctx := getContext()
+
+	vols, lastError := getVolumesFromContext(c, runtime)
+	for _, vol := range vols {
+		err = runtime.RemoveVolume(ctx, vol, c.Bool("force"), false)
+		if err != nil {
+			if lastError != nil {
+				logrus.Errorf("%q", lastError)
+			}
+			lastError = errors.Wrapf(err, "failed to remove volume %q", vol.Name())
+		} else {
+			fmt.Println(vol.Name())
+		}
+	}
+	return lastError
+}