Function runLoad

cli/command/image/load.go:55–101

(ctx context.Context, dockerCli command.Cli, opts loadOptions)

}

func runLoad(ctx context.Context, dockerCli command.Cli, opts loadOptions) error {
	var input io.Reader = dockerCli.In()

	// TODO(thaJeztah): add support for "-" as STDIN to match other commands, possibly making it a required positional argument.
	switch opts.input {
	case "":
		// To avoid getting stuck, verify that a tar file is given either in
		// the input flag or through stdin and if not display an error message and exit.
		if dockerCli.In().IsTerminal() {
			return errors.New("requested load from stdin, but stdin is empty")
		}
	default:
		// We use sequential.Open to use sequential file access on Windows, avoiding
		// depleting the standby list un-necessarily. On Linux, this equates to a regular os.Open.
		file, err := sequential.Open(opts.input)
		if err != nil {
			return err
		}
		defer func() { _ = file.Close() }()
		input = file
	}

	var options []client.ImageLoadOption
	if opts.quiet || !dockerCli.Out().IsTerminal() {
		options = append(options, client.ImageLoadWithQuiet(true))
	}

	platformList := []ocispec.Platform{}
	for _, p := range opts.platform {
		pp, err := platforms.Parse(p)
		if err != nil {
			return fmt.Errorf("invalid platform: %w", err)
		}
		platformList = append(platformList, pp)
	}
	if len(platformList) > 0 {
		options = append(options, client.ImageLoadWithPlatforms(platformList...))
	}

	res, err := dockerCli.Client().ImageLoad(ctx, input, options...)
	if err != nil {
		return err
	}
	defer func() { _ = res.Close() }()

	return jsonstream.Display(ctx, res, dockerCli.Out())
}