validate_submission_lib.py 文件源码

def _verify_docker_image_size(self, image_name):
    """Verifies size of Docker image.

    Args:
      image_name: name of the Docker image.

    Returns:
      True if image size is withing the limits, False otherwise.
    """
    shell_call(['docker', 'pull', image_name])
    try:
      image_size = subprocess.check_output(
          ['docker', 'inspect', '--format={{.Size}}', image_name]).strip()
      image_size = int(image_size) if PY3 else long(image_size)
    except (ValueError, subprocess.CalledProcessError) as e:
      logging.error('Failed to determine docker image size: %s', e)
      return False
    logging.info('Size of docker image %s is %d', image_name, image_size)
    if image_size > MAX_DOCKER_IMAGE_SIZE:
      logging.error('Image size exceeds limit %d', MAX_DOCKER_IMAGE_SIZE)
    return image_size <= MAX_DOCKER_IMAGE_SIZE