utils.py 文件源码

def _validate_allowed_url(self, full_url):
        parsed = botocore.compat.urlparse(full_url)
        is_whitelisted_host = self._check_if_whitelisted_host(
            parsed.hostname)
        if not is_whitelisted_host:
            raise ValueError(
                "Unsupported host '%s'.  Can only "
                "retrieve metadata from these hosts: %s" %
                (parsed.hostname, ', '.join(self._ALLOWED_HOSTS)))