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, 63 insertions, 0 deletions

diff --git a/libpod/volume.go b/libpod/volume.go
new file mode 100644
index 000000000..b732e8aa7
--- /dev/null
+++ b/libpod/volume.go
@@ -0,0 +1,63 @@
+package libpod
+
+import "github.com/containers/storage"
+
+// Volume is the type used to create named volumes
+// TODO: all volumes should be created using this and the Volume API
+type Volume struct {
+	config *VolumeConfig
+
+	valid   bool
+	runtime *Runtime
+	lock    storage.Locker
+}
+
+// VolumeConfig holds the volume's config information
+//easyjson:json
+type VolumeConfig struct {
+	Name       string            `json:"name"`
+	Labels     map[string]string `json:"labels"`
+	MountPoint string            `json:"mountPoint"`
+	Driver     string            `json:"driver"`
+	Options    map[string]string `json:"options"`
+	Scope      string            `json:"scope"`
+}
+
+// Name retrieves the volume's name
+func (v *Volume) Name() string {
+	return v.config.Name
+}
+
+// Labels returns the volume's labels
+func (v *Volume) Labels() map[string]string {
+	labels := make(map[string]string)
+	for key, value := range v.config.Labels {
+		labels[key] = value
+	}
+	return labels
+}
+
+// MountPoint returns the volume's mountpoint on the host
+func (v *Volume) MountPoint() string {
+	return v.config.MountPoint
+}
+
+// Driver returns the volume's driver
+func (v *Volume) Driver() string {
+	return v.config.Driver
+}
+
+// Options return the volume's options
+func (v *Volume) Options() map[string]string {
+	options := make(map[string]string)
+	for key, value := range v.config.Options {
+		options[key] = value
+	}
+
+	return options
+}
+
+// Scope returns the scope of the volume
+func (v *Volume) Scope() string {
+	return v.config.Scope
+}