Add "image list/remove/status" to the client

Add "image list", "image status", and "image remove" subcommands to the
client.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

cmd/client/image.go

@@ -12,6 +12,9 @@ var imageCommand = cli.Command{
 	Name: "image",
 	Subcommands: []cli.Command{
 		pullImageCommand,
+		listImageCommand,
+		imageStatusCommand,
+		removeImageCommand,
 	},
 }
 
@@ -35,8 +38,138 @@ var pullImageCommand = cli.Command{
 	},
 }
 
+var listImageCommand = cli.Command{
+	Name:  "list",
+	Usage: "list images",
+	Flags: []cli.Flag{
+		cli.BoolFlag{
+			Name:  "quiet",
+			Usage: "list only image IDs",
+		},
+	},
+	Action: func(context *cli.Context) error {
+		// Set up a connection to the server.
+		conn, err := getClientConnection(context)
+		if err != nil {
+			return fmt.Errorf("failed to connect: %v", err)
+		}
+		defer conn.Close()
+		client := pb.NewImageServiceClient(conn)
+
+		r, err := ListImages(client, context.Args().Get(0))
+		if err != nil {
+			return fmt.Errorf("listing images failed: %v", err)
+		}
+		quiet := context.Bool("quiet")
+		for _, image := range r.Images {
+			if quiet {
+				fmt.Printf("%s\n", *image.Id)
+				continue
+			}
+			fmt.Printf("ID: %s\n", *image.Id)
+			for _, tag := range image.RepoTags {
+				fmt.Printf("Tag: %s\n", tag)
+			}
+			for _, digest := range image.RepoDigests {
+				fmt.Printf("Digest: %s\n", digest)
+			}
+			if image.Size_ != nil {
+				fmt.Printf("Size: %d\n", image.Size_)
+			}
+		}
+		return nil
+	},
+}
+
+var imageStatusCommand = cli.Command{
+	Name:  "status",
+	Usage: "return the status of an image",
+	Flags: []cli.Flag{
+		cli.StringFlag{
+			Name:  "id",
+			Usage: "id of the image",
+		},
+	},
+	Action: func(context *cli.Context) error {
+		// Set up a connection to the server.
+		conn, err := getClientConnection(context)
+		if err != nil {
+			return fmt.Errorf("failed to connect: %v", err)
+		}
+		defer conn.Close()
+		client := pb.NewImageServiceClient(conn)
+
+		r, err := ImageStatus(client, context.String("id"))
+		if err != nil {
+			return fmt.Errorf("image status request failed: %v", err)
+		}
+		image := r.Image
+		if image == nil {
+			return fmt.Errorf("no such image present")
+		}
+		fmt.Printf("ID: %s\n", *image.Id)
+		for _, tag := range image.RepoTags {
+			fmt.Printf("Tag: %s\n", tag)
+		}
+		for _, digest := range image.RepoDigests {
+			fmt.Printf("Digest: %s\n", digest)
+		}
+		if image.Size_ != nil {
+			fmt.Printf("Size: %d\n", image.Size_)
+		}
+		return nil
+	},
+}
+var removeImageCommand = cli.Command{
+	Name:  "remove",
+	Usage: "remove an image",
+	Flags: []cli.Flag{
+		cli.StringFlag{
+			Name:  "id",
+			Value: "",
+			Usage: "id of the image",
+		},
+	},
+	Action: func(context *cli.Context) error {
+		// Set up a connection to the server.
+		conn, err := getClientConnection(context)
+		if err != nil {
+			return fmt.Errorf("failed to connect: %v", err)
+		}
+		defer conn.Close()
+		client := pb.NewImageServiceClient(conn)
+
+		_, err = RemoveImage(client, context.String("id"))
+		if err != nil {
+			return fmt.Errorf("removing the image failed: %v", err)
+		}
+		return nil
+	},
+}
+
 // PullImage sends a PullImageRequest to the server, and parses
-// the returned ContainerStatusResponse.
+// the returned PullImageResponse.
 func PullImage(client pb.ImageServiceClient, image string) (*pb.PullImageResponse, error) {
 	return client.PullImage(context.Background(), &pb.PullImageRequest{Image: &pb.ImageSpec{Image: &image}})
 }
+
+// ListImages sends a ListImagesRequest to the server, and parses
+// the returned ListImagesResponse.
+func ListImages(client pb.ImageServiceClient, image string) (*pb.ListImagesResponse, error) {
+	return client.ListImages(context.Background(), &pb.ListImagesRequest{Filter: &pb.ImageFilter{Image: &pb.ImageSpec{Image: &image}}})
+}
+
+// ImageStatus sends an ImageStatusRequest to the server, and parses
+// the returned ImageStatusResponse.
+func ImageStatus(client pb.ImageServiceClient, image string) (*pb.ImageStatusResponse, error) {
+	return client.ImageStatus(context.Background(), &pb.ImageStatusRequest{Image: &pb.ImageSpec{Image: &image}})
+}
+
+// RemoveImage sends a RemoveImageRequest to the server, and parses
+// the returned RemoveImageResponse.
+func RemoveImage(client pb.ImageServiceClient, image string) (*pb.RemoveImageResponse, error) {
+	if image == "" {
+		return nil, fmt.Errorf("ID cannot be empty")
+	}
+	return client.RemoveImage(context.Background(), &pb.RemoveImageRequest{Image: &pb.ImageSpec{Image: &image}})
+}