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package main
import (
"fmt"
"github.com/urfave/cli"
"golang.org/x/net/context"
pb "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
)
var imageCommand = cli.Command{
Name: "image",
Subcommands: []cli.Command{
pullImageCommand,
listImageCommand,
imageStatusCommand,
removeImageCommand,
},
}
var pullImageCommand = cli.Command{
Name: "pull",
Usage: "pull an 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 = PullImage(client, context.Args().Get(0))
if err != nil {
return fmt.Errorf("pulling image failed: %v", err)
}
return nil
},
}
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_ != 0 {
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)
}
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 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}})
}
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