Function cmdErrorMessage

cmd/docker/docker.go:126–134

cmdErrorMessage extracts an error message suitable for passing to plugin hooks. If the error's message is empty (e.g. a StatusError with only an exit code), it falls back to a generic message so that hooks can still detect that the command failed.

(err error)

// exit code), it falls back to a generic message so that hooks can still
// detect that the command failed.
func cmdErrorMessage(err error) string {
	if err == nil {
		return ""
	}
	if msg := err.Error(); msg != "" {
		return msg
	}
	return fmt.Sprintf("exited with code %d", getExitCode(err))
}

func newDockerCommand(dockerCli *command.DockerCli) *cli.TopLevelCommand {
	var (