DockerCLI/cli/command/engine/update.go

69 lines
1.9 KiB
Go

package engine
import (
"context"
"fmt"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
func newUpdateCommand(dockerCli command.Cli) *cobra.Command {
var options extendedEngineInitOptions
cmd := &cobra.Command{
Use: "update [OPTIONS]",
Short: "Update a local engine",
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
return runUpdate(dockerCli, options)
},
}
flags := cmd.Flags()
flags.StringVar(&options.EngineVersion, "version", "", "Specify engine version")
flags.StringVar(&options.EngineImage, "engine-image", "", "Specify engine image")
flags.StringVar(&options.RegistryPrefix, "registry-prefix", "", "Override the current location where engine images are pulled")
flags.StringVar(&options.sockPath, "containerd", "", "override default location of containerd endpoint")
return cmd
}
func runUpdate(dockerCli command.Cli, options extendedEngineInitOptions) error {
ctx := context.Background()
client, err := dockerCli.NewContainerizedEngineClient(options.sockPath)
if err != nil {
return errors.Wrap(err, "unable to access local containerd")
}
defer client.Close()
if options.EngineImage == "" || options.RegistryPrefix == "" {
currentOpts, err := client.GetCurrentEngineVersion(ctx)
if err != nil {
return err
}
if options.EngineImage == "" {
options.EngineImage = currentOpts.EngineImage
}
if options.RegistryPrefix == "" {
options.RegistryPrefix = currentOpts.RegistryPrefix
}
}
authConfig, err := getRegistryAuth(dockerCli, options.RegistryPrefix)
if err != nil {
return err
}
if err := client.DoUpdate(ctx, options.EngineInitOptions, dockerCli.Out(), authConfig,
func(ctx context.Context) error {
client := dockerCli.Client()
_, err := client.Ping(ctx)
return err
}); err != nil {
return err
}
fmt.Fprintln(dockerCli.Out(), "Success! The docker engine is now running.")
return nil
}