images.py 文件源码

def check_registry_status(url=DEFAULT_IMAGES_URL, _v2=False):
    """
    Performs api check for registry health status.

    :params url: registry url
    :raises RegistryError: if registry is not available
    """
    url = urlsplit(url)._replace(path='/v2/' if _v2 else '/v1/_ping').geturl()

    with raise_registry_error(url):
        response = requests.get(url, timeout=PING_REQUEST_TIMEOUT,
                                verify=False)
        need_v2 = not _v2 and response.status_code == 404 and \
            response.headers.get(API_VERSION_HEADER) == 'registry/2.0'
        if need_v2:
            check_registry_status(url, _v2=True)
        elif response.status_code == 401:
            return  # user is not authorized, but registry is available
        else:
            response.raise_for_status()