implement runv delete

delete.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/codegangsta/cli"
+	"github.com/docker/containerd/api/grpc/types"
+	"github.com/hyperhq/runv/lib/linuxsignal"
+	netcontext "golang.org/x/net/context"
+)
+
+var deleteCommand = cli.Command{
+	Name:  "delete",
+	Usage: "delete any resources held by one container or more containers often used with detached containers",
+	ArgsUsage: `container-id [container-id...]
+
+Where "<container-id>" is the name for the instance of the container.
+
+EXAMPLE:
+For example, if the container id is "ubuntu01" the following will delete resources
+held for "ubuntu01" removing "ubuntu01" from the runv list of containers:
+
+       # runv delete ubuntu01`,
+	Flags: []cli.Flag{
+		cli.BoolFlag{
+			Name:  "force, f",
+			Usage: "[ignore on runv temporarily] forcibly kills the container if it is still running",
+		},
+	},
+	Action: func(context *cli.Context) {
+		hasError := false
+		if !context.Args().Present() {
+			fmt.Printf("runv: \"delete\" requires a minimum of 1 argument")
+			os.Exit(-1)
+		}
+
+		for _, container := range context.Args() {
+			c := getClient(filepath.Join(context.GlobalString("root"), container, "namespace/namespaced.sock"))
+			if _, err := c.Signal(netcontext.Background(), &types.SignalRequest{
+				Id:     container,
+				Pid:    "init",
+				Signal: uint32(linuxsignal.SIGKILL),
+			}); err != nil {
+				fmt.Fprintf(os.Stderr, "delete container %s failed, %v", container, err)
+				hasError = true
+			}
+		}
+
+		if hasError {
+			fmt.Errorf("one or more of the container deletions failed")
+			os.Exit(-1)
+		}
+	},
+}

main.go

@@ -118,6 +118,7 @@ func main() {
 		specCommand,
 		execCommand,
 		killCommand,
+		deleteCommand,
 		listCommand,
 		stateCommand,
 		manageCommand,