def _get_manifest_list(self, image: ImageName) -> requests.Response:
"""try to figure out manifest list"""
if image in self.manifest_list_cache:
return self.manifest_list_cache[image]
reg_client = self._get_registry_client(image.registry)
manifest_list = reg_client.get_manifest_list(image)
if '@sha256:' in str(image) and not manifest_list:
# we want to adjust the tag only for manifest list fetching
image = image.copy()
try:
config_blob = reg_client.get_config_from_registry(
image, image.tag)
except (HTTPError, RetryError, Timeout) as ex:
self.log.warning('Unable to fetch config for %s, got error %s',
image, ex.response.status_code)
raise RuntimeError(
'Unable to fetch config for base image') from ex
release = config_blob['config']['Labels']['release']
version = config_blob['config']['Labels']['version']
docker_tag = "%s-%s" % (version, release)
image.tag = docker_tag
manifest_list = reg_client.get_manifest_list(image)
self.manifest_list_cache[image] = manifest_list
return self.manifest_list_cache[image]
def _store_manifest_digest(self, image: ImageName, use_original_tag: bool) -> None:
"""Store media type and digest for manifest list or v2 schema 2 manifest digest"""
image_str = image.to_str()
manifest_list = self._get_manifest_list(image)
reg_client = self._get_registry_client(image.registry)
if manifest_list:
digest_dict = get_checksums(BytesIO(manifest_list.content), ['sha256'])
media_type = get_manifest_media_type('v2_list')
else:
digests_dict = reg_client.get_all_manifests(image, versions=('v2',))
media_type = get_manifest_media_type('v2')
try:
manifest_digest_response = digests_dict['v2']
except KeyError as exc:
raise RuntimeError(
'Unable to fetch manifest list or '
'v2 schema 2 digest for {} (Does image exist?)'.format(image_str)
) from exc
digest_dict = get_checksums(BytesIO(manifest_digest_response.content), ['sha256'])
manifest_digest = 'sha256:{}'.format(digest_dict['sha256sum'])
parent_digests = {media_type: manifest_digest}
if use_original_tag:
# image tag may have been replaced with a ref for autorebuild; use original tag
# to simplify fetching parent_images_digests data in other plugins
image = image.copy()
base_image_key: ImageName = self.workflow.data.dockerfile_images.base_image_key
image.tag = base_image_key.tag
image_str = image.to_str()
self.workflow.data.parent_images_digests[image_str] = parent_digests
