implement kpod rename

rename a container

Signed-off-by: Ryan Cole <rcyoalne@gmail.com>

cmd/kpod/common.go

@@ -50,6 +50,8 @@ func getConfig(c *cli.Context) (*libkpod.Config, error) {
 	if c.Bool("debug") {
 		logrus.SetLevel(logrus.DebugLevel)
 	}
-
+	if c.GlobalIsSet("runtime") {
+		config.Runtime = c.GlobalString("runtime")
+	}
 	return config, nil
 }

cmd/kpod/main.go

@@ -33,6 +33,7 @@ func main() {
 		mountCommand,
 		pullCommand,
 		pushCommand,
+		renameCommand,
 		rmiCommand,
 		saveCommand,
 		tagCommand,
@@ -56,6 +57,10 @@ func main() {
 			Name:  "runroot",
 			Usage: "path to the 'run directory' where all state information is stored",
 		},
+		cli.StringFlag{
+			Name:  "runtime",
+			Usage: "path to the OCI-compatible binary used to run containers, default is /usr/bin/runc",
+		},
 		cli.StringFlag{
 			Name:  "storage-driver, s",
 			Usage: "select which storage driver is used to manage storage of images and containers (default is overlay2)",

cmd/kpod/rename.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"github.com/kubernetes-incubator/cri-o/libkpod"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli"
+)
+
+var (
+	renameDescription = "Rename a container.  Container may be created, running, paused, or stopped"
+	renameFlags       = []cli.Flag{}
+	renameCommand     = cli.Command{
+		Name:        "rename",
+		Usage:       "rename a container",
+		Description: renameDescription,
+		Action:      renameCmd,
+		ArgsUsage:   "CONTAINER NEW-NAME",
+		Flags:       renameFlags,
+	}
+)
+
+func renameCmd(c *cli.Context) error {
+	if len(c.Args()) != 2 {
+		return errors.Errorf("Rename requires a src container name/ID and a dest container name")
+	}
+
+	config, err := getConfig(c)
+	if err != nil {
+		return errors.Wrapf(err, "Could not get config")
+	}
+	server, err := libkpod.New(config)
+	if err != nil {
+		return errors.Wrapf(err, "could not get container server")
+	}
+	err = server.Update()
+	if err != nil {
+		return errors.Wrapf(err, "could not update list of containers")
+	}
+
+	err = server.ContainerRename(c.Args().Get(0), c.Args().Get(1))
+	if err != nil {
+		return errors.Wrapf(err, "could not rename container")
+	}
+	return nil
+}