add in volume control

Author: lyondhill

volume.go

@@ -0,0 +1,45 @@
+package docker
+
+import (
+	dockType "github.com/docker/engine-api/types"
+	"github.com/docker/engine-api/types/filters"
+	"golang.org/x/net/context"
+
+
+)
+
+// create a new volume
+func VolumeCreate(name string) (dockType.Volume, error) {
+	vol := dockType.VolumeCreateRequest{
+		Name:       name,
+	}
+
+	return client.VolumeCreate(context.Background(), vol)
+}
+
+// list the volumes we have
+func VolumeList() ([]*dockType.Volume, error) {
+	volumeList, err := client.VolumeList(context.Background(), filters.Args{})
+	return volumeList.Volumes, err
+}
+
+// check to see if a volume exists
+func VolumeExists(name string) bool {
+	volumes, err := VolumeList()
+	if err != nil {
+		return false
+	}
+
+	for _, volume := range volumes {
+		if volume.Name == name {
+			return true
+		}
+		
+	}
+	return false
+}
+
+// remove an existing volume
+func VolumeRemove(name string) error {
+	return client.VolumeRemove(context.Background(), name, true)
+}