async def get_tag(self, request):
"""
Match the path and stream either Manifest or ManifestList.
Args:
request(:class:`~aiohttp.web.Request`): The request to prepare a response for.
Raises:
PathNotResolved: The path could not be matched to a published file.
PermissionError: When not permitted.
Returns:
:class:`aiohttp.web.StreamResponse` or :class:`aiohttp.web.FileResponse`: The response
streamed back to the client.
"""
path = request.match_info["path"]
tag_name = request.match_info["tag_name"]
distribution = self._match_distribution(path)
self._permit(request, distribution)
repository_version = distribution.get_repository_version()
accepted_media_types = get_accepted_media_types(request.headers)
try:
tag = Tag.objects.get(pk__in=repository_version.content,
name=tag_name)
except ObjectDoesNotExist:
raise PathNotResolved(tag_name)
# we do not convert OCI to docker
oci_mediatypes = [MEDIA_TYPE.MANIFEST_OCI, MEDIA_TYPE.INDEX_OCI]
if (tag.tagged_manifest.media_type in oci_mediatypes and
tag.tagged_manifest.media_type not in accepted_media_types):
log.warn(
"OCI format found, but the client only accepts {accepted_media_types}."
.format(accepted_media_types=accepted_media_types))
raise PathNotResolved(tag_name)
# return schema1 (even in case only oci is requested)
if tag.tagged_manifest.media_type == MEDIA_TYPE.MANIFEST_V1:
return_media_type = MEDIA_TYPE.MANIFEST_V1_SIGNED
response_headers = {
"Content-Type": return_media_type,
"Docker-Content-Digest": tag.tagged_manifest.digest,
}
return await Registry.dispatch_tag(tag, response_headers)
# return what was found in case media_type is accepted header (docker, oci)
if tag.tagged_manifest.media_type in accepted_media_types:
return_media_type = tag.tagged_manifest.media_type
response_headers = {
"Content-Type": return_media_type,
"Docker-Content-Digest": tag.tagged_manifest.digest,
}
return await Registry.dispatch_tag(tag, response_headers)
# convert if necessary
return await Registry.dispatch_converted_schema(
tag, accepted_media_types, path)
def issue_tag_redirect(self, tag):
"""
Issue a redirect or perform a schema conversion if an accepted media type requires it.
"""
manifest_media_type = tag.tagged_manifest.media_type
if manifest_media_type in get_accepted_media_types(
self.request.headers):
return self.redirect_to_artifact(tag.name, tag.tagged_manifest,
manifest_media_type)
elif manifest_media_type == MEDIA_TYPE.MANIFEST_V1:
return self.redirect_to_artifact(tag.name, tag.tagged_manifest,
MEDIA_TYPE.MANIFEST_V1_SIGNED)
else:
# execute the schema conversion
return self.redirect_to_content_app("manifests", tag.name)