347 lines
11 KiB
Python
347 lines
11 KiB
Python
import json
|
|
|
|
from abc import ABCMeta, abstractmethod
|
|
from collections import namedtuple
|
|
|
|
from six import add_metaclass
|
|
|
|
from data import model
|
|
from image.docker.v1 import DockerV1Metadata
|
|
|
|
|
|
class Repository(namedtuple('Repository', ['id', 'name', 'namespace_name', 'description',
|
|
'is_public', 'kind'])):
|
|
"""
|
|
Repository represents a namespaced collection of tags.
|
|
:type id: int
|
|
:type name: string
|
|
:type namespace_name: string
|
|
:type description: string
|
|
:type is_public: bool
|
|
:type kind: string
|
|
"""
|
|
|
|
|
|
class DerivedImage(namedtuple('DerivedImage', ['ref', 'blob', 'internal_source_image_db_id'])):
|
|
"""
|
|
DerivedImage represents a user-facing alias for an image which was derived from another image.
|
|
"""
|
|
|
|
class RepositoryReference(namedtuple('RepositoryReference', ['id', 'name', 'namespace_name'])):
|
|
"""
|
|
RepositoryReference represents a reference to a Repository, without its full metadata.
|
|
"""
|
|
|
|
class ImageWithBlob(namedtuple('Image', ['image_id', 'blob', 'compat_metadata', 'repository',
|
|
'internal_db_id', 'v1_metadata'])):
|
|
"""
|
|
ImageWithBlob represents a user-facing alias for referencing an image, along with its blob.
|
|
"""
|
|
|
|
class Blob(namedtuple('Blob', ['uuid', 'size', 'uncompressed_size', 'uploading', 'locations'])):
|
|
"""
|
|
Blob represents an opaque binary blob saved to the storage system.
|
|
"""
|
|
|
|
class TorrentInfo(namedtuple('TorrentInfo', ['piece_length', 'pieces'])):
|
|
"""
|
|
TorrentInfo represents the torrent piece information associated with a blob.
|
|
"""
|
|
|
|
|
|
@add_metaclass(ABCMeta)
|
|
class VerbsDataInterface(object):
|
|
"""
|
|
Interface that represents all data store interactions required by the registry's custom HTTP
|
|
verbs.
|
|
"""
|
|
@abstractmethod
|
|
def get_repository(self, namespace_name, repo_name):
|
|
"""
|
|
Returns a repository tuple for the repository with the given name under the given namespace.
|
|
Returns None if no such repository was found.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_manifest_layers_with_blobs(self, repo_image):
|
|
"""
|
|
Returns the full set of manifest layers and their associated blobs starting at the given
|
|
repository image and working upwards to the root image.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_blob_path(self, blob):
|
|
"""
|
|
Returns the storage path for the given blob.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_derived_image_signature(self, derived_image, signer_name):
|
|
"""
|
|
Returns the signature associated with the derived image and a specific signer or None if none.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def set_derived_image_signature(self, derived_image, signer_name, signature):
|
|
"""
|
|
Sets the calculated signature for the given derived image and signer to that specified.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def delete_derived_image(self, derived_image):
|
|
"""
|
|
Deletes a derived image and all of its storage.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def set_blob_size(self, blob, size):
|
|
"""
|
|
Sets the size field on a blob to the value specified.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_repo_blob_by_digest(self, namespace_name, repo_name, digest):
|
|
"""
|
|
Returns the blob with the given digest under the matching repository or None if none.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_torrent_info(self, blob):
|
|
"""
|
|
Returns the torrent information associated with the given blob or None if none.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def set_torrent_info(self, blob, piece_length, pieces):
|
|
"""
|
|
Sets the torrent infomation associated with the given blob to that specified.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def lookup_derived_image(self, repo_image, verb, varying_metadata=None):
|
|
"""
|
|
Looks up the derived image for the given repository image, verb and optional varying metadata
|
|
and returns it or None if none.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def lookup_or_create_derived_image(self, repo_image, verb, location, varying_metadata=None):
|
|
"""
|
|
Looks up the derived image for the given repository image, verb and optional varying metadata
|
|
and returns it. If none exists, a new derived image is created.
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_tag_image(self, namespace_name, repo_name, tag_name):
|
|
"""
|
|
Returns the image associated with the live tag with the given name under the matching repository
|
|
or None if none.
|
|
"""
|
|
pass
|
|
|
|
|
|
class PreOCIModel(VerbsDataInterface):
|
|
"""
|
|
PreOCIModel implements the data model for the registry's custom HTTP verbs using a database schema
|
|
before it was changed to support the OCI specification.
|
|
"""
|
|
|
|
def get_repository(self, namespace_name, repo_name):
|
|
return _repository_for_repo(model.repository.get_repository(namespace_name, repo_name))
|
|
|
|
def get_manifest_layers_with_blobs(self, repo_image):
|
|
repo_image_record = model.image.get_image_by_id(repo_image.repository.namespace_name,
|
|
repo_image.repository.name,
|
|
repo_image.image_id)
|
|
|
|
parents = model.image.get_parent_images_with_placements(repo_image.repository.namespace_name,
|
|
repo_image.repository.name,
|
|
repo_image_record)
|
|
|
|
yield repo_image
|
|
|
|
for parent in parents:
|
|
metadata = {}
|
|
try:
|
|
metadata = json.loads(parent.v1_json_metadata)
|
|
except ValueError:
|
|
pass
|
|
|
|
yield ImageWithBlob(
|
|
image_id=parent.docker_image_id,
|
|
blob=_blob(parent.storage),
|
|
repository=repo_image.repository,
|
|
compat_metadata=metadata,
|
|
v1_metadata=_docker_v1_metadata(repo_image.repository.namespace_name,
|
|
repo_image.repository.name, parent),
|
|
internal_db_id=parent.id,
|
|
)
|
|
|
|
def get_derived_image_signature(self, derived_image, signer_name):
|
|
storage = model.storage.get_storage_by_uuid(derived_image.blob.uuid)
|
|
signature_entry = model.storage.lookup_storage_signature(storage, signer_name)
|
|
if signature_entry is None:
|
|
return None
|
|
|
|
return signature_entry.signature
|
|
|
|
def set_derived_image_signature(self, derived_image, signer_name, signature):
|
|
storage = model.storage.get_storage_by_uuid(derived_image.blob.uuid)
|
|
signature_entry = model.storage.find_or_create_storage_signature(storage, signer_name)
|
|
signature_entry.signature = signature
|
|
signature_entry.uploading = False
|
|
signature_entry.save()
|
|
|
|
def delete_derived_image(self, derived_image):
|
|
model.image.delete_derived_storage_by_uuid(derived_image.blob.uuid)
|
|
|
|
def set_blob_size(self, blob, size):
|
|
storage_entry = model.storage.get_storage_by_uuid(blob.uuid)
|
|
storage_entry.image_size = size
|
|
storage_entry.uploading = False
|
|
storage_entry.save()
|
|
|
|
def get_blob_path(self, blob):
|
|
blob_record = model.storage.get_storage_by_uuid(blob.uuid)
|
|
return model.storage.get_layer_path(blob_record)
|
|
|
|
def get_repo_blob_by_digest(self, namespace_name, repo_name, digest):
|
|
try:
|
|
blob_record = model.blob.get_repo_blob_by_digest(namespace_name, repo_name, digest)
|
|
except model.BlobDoesNotExist:
|
|
return None
|
|
|
|
return _blob(blob_record)
|
|
|
|
def get_torrent_info(self, blob):
|
|
blob_record = model.storage.get_storage_by_uuid(blob.uuid)
|
|
|
|
try:
|
|
torrent_info = model.storage.get_torrent_info(blob_record)
|
|
except model.TorrentInfoDoesNotExist:
|
|
return None
|
|
|
|
return TorrentInfo(
|
|
pieces=torrent_info.pieces,
|
|
piece_length=torrent_info.piece_length,
|
|
)
|
|
|
|
def set_torrent_info(self, blob, piece_length, pieces):
|
|
blob_record = model.storage.get_storage_by_uuid(blob.uuid)
|
|
model.storage.save_torrent_info(blob_record, piece_length, pieces)
|
|
|
|
def lookup_derived_image(self, repo_image, verb, varying_metadata=None):
|
|
blob_record = model.image.find_derived_storage_for_image(repo_image.internal_db_id, verb,
|
|
varying_metadata)
|
|
if blob_record is None:
|
|
return None
|
|
|
|
return _derived_image(blob_record, repo_image)
|
|
|
|
def lookup_or_create_derived_image(self, repo_image, verb, location, varying_metadata=None):
|
|
blob_record = model.image.find_or_create_derived_storage(repo_image.internal_db_id, verb,
|
|
location, varying_metadata)
|
|
return _derived_image(blob_record, repo_image)
|
|
|
|
def get_tag_image(self, namespace_name, repo_name, tag_name):
|
|
try:
|
|
found = model.tag.get_tag_image(namespace_name, repo_name, tag_name, include_storage=True)
|
|
except model.DataModelException:
|
|
return None
|
|
|
|
metadata = {}
|
|
try:
|
|
metadata = json.loads(found.v1_json_metadata)
|
|
except ValueError:
|
|
pass
|
|
|
|
return ImageWithBlob(
|
|
image_id=found.docker_image_id,
|
|
blob=_blob(found.storage),
|
|
repository=RepositoryReference(
|
|
namespace_name=namespace_name,
|
|
name=repo_name,
|
|
id=found.repository_id,
|
|
),
|
|
compat_metadata=metadata,
|
|
v1_metadata=_docker_v1_metadata(namespace_name, repo_name, found),
|
|
internal_db_id=found.id,
|
|
)
|
|
|
|
|
|
pre_oci_model = PreOCIModel()
|
|
|
|
|
|
def _docker_v1_metadata(namespace_name, repo_name, repo_image):
|
|
"""
|
|
Returns a DockerV1Metadata object for the given Pre-OCI repo_image under the
|
|
repository with the given namespace and name. Note that the namespace and
|
|
name are passed here as an optimization, and are *not checked* against the
|
|
image.
|
|
"""
|
|
return DockerV1Metadata(
|
|
namespace_name=namespace_name,
|
|
repo_name=repo_name,
|
|
image_id=repo_image.docker_image_id,
|
|
checksum=repo_image.v1_checksum,
|
|
compat_json=repo_image.v1_json_metadata,
|
|
created=repo_image.created,
|
|
comment=repo_image.comment,
|
|
command=repo_image.command,
|
|
|
|
# Note: These are not needed in verbs and are expensive to load, so we just skip them.
|
|
content_checksum=None,
|
|
parent_image_id=None,
|
|
)
|
|
|
|
|
|
def _derived_image(blob_record, repo_image):
|
|
"""
|
|
Returns a DerivedImage object for the given Pre-OCI data model blob and repo_image instance.
|
|
"""
|
|
return DerivedImage(
|
|
ref=repo_image.internal_db_id,
|
|
blob=_blob(blob_record),
|
|
internal_source_image_db_id=repo_image.internal_db_id,
|
|
)
|
|
|
|
|
|
def _blob(blob_record):
|
|
"""
|
|
Returns a Blob object for the given Pre-OCI data model blob instance.
|
|
"""
|
|
if hasattr(blob_record, 'locations'):
|
|
locations = blob_record.locations
|
|
else:
|
|
locations = model.storage.get_storage_locations(blob_record.uuid)
|
|
|
|
return Blob(
|
|
uuid=blob_record.uuid,
|
|
size=blob_record.image_size,
|
|
uncompressed_size=blob_record.uncompressed_size,
|
|
uploading=blob_record.uploading,
|
|
locations=locations,
|
|
)
|
|
|
|
def _repository_for_repo(repo):
|
|
""" Returns a Repository object representing the Pre-OCI data model repo instance given. """
|
|
return Repository(
|
|
id=repo.id,
|
|
name=repo.name,
|
|
namespace_name=repo.namespace_user.username,
|
|
description=repo.description,
|
|
is_public=model.repository.is_repository_public(repo),
|
|
kind=model.repository.get_repo_kind_name(repo),
|
|
)
|