def create_or_update_channel(repo, channel_name, tag_name, models_ref):
""" Creates or updates a channel to include a particular tag. """
tag = tag_model.get_tag(repo, tag_name, models_ref, 'release')
return tag_model.create_or_update_tag(repo,
channel_name,
models_ref,
linked_tag=tag,
tag_kind="channel")
def create_app_release(repo, tag_name, manifest_data, digest, models_ref, force=False):
""" Create a new application release, it includes creating a new Tag, ManifestList,
ManifestListManifests, Manifest, ManifestBlob.
To deduplicate the ManifestList, the manifestlist_json is kept ordered by the manifest.id.
To find the insert point in the ManifestList it uses bisect on the manifest-ids list.
"""
ManifestList = models_ref.ManifestList
ManifestListManifest = models_ref.ManifestListManifest
Blob = models_ref.Blob
ManifestBlob = models_ref.ManifestBlob
with db_transaction():
# Create/get the package manifest
manifest = manifest_model.get_or_create_manifest(manifest_data, manifest_data['mediaType'],
models_ref)
# get the tag
tag = tag_model.get_or_initialize_tag(repo, tag_name, models_ref)
if tag.manifest_list is None:
tag.manifest_list = ManifestList(media_type=ManifestList.media_type.get_id(LIST_MEDIA_TYPE),
schema_version=SCHEMA_VERSION,
manifest_list_json=[], )
elif tag_model.tag_media_type_exists(tag, manifest.media_type, models_ref):
if force:
delete_app_release(repo, tag_name, manifest.media_type.name, models_ref)
return create_app_release(repo, tag_name, manifest_data, digest, models_ref, force=False)
else:
raise PackageAlreadyExists("package exists already")
list_json = tag.manifest_list.manifest_list_json
mlm_query = (ManifestListManifest
.select()
.where(ManifestListManifest.manifest_list == tag.manifest_list))
list_manifest_ids = sorted([mlm.manifest_id for mlm in mlm_query])
insert_point = bisect.bisect_left(list_manifest_ids, manifest.id)
list_json.insert(insert_point, manifest.manifest_json)
list_manifest_ids.insert(insert_point, manifest.id)
manifestlist = manifest_list_model.get_or_create_manifest_list(list_json, LIST_MEDIA_TYPE,
SCHEMA_VERSION, models_ref)
manifest_list_model.create_manifestlistmanifest(manifestlist, list_manifest_ids, list_json,
models_ref)
tag = tag_model.create_or_update_tag(repo, tag_name, models_ref, manifest_list=manifestlist,
tag_kind="release")
blob_digest = digest
try:
(ManifestBlob
.select()
.join(Blob)
.where(ManifestBlob.manifest == manifest,
Blob.digest == _ensure_sha256_header(blob_digest)).get())
except ManifestBlob.DoesNotExist:
blob = blob_model.get_blob(blob_digest, models_ref)
ManifestBlob.create(manifest=manifest, blob=blob)
return tag
def delete_app_release(repo, tag_name, media_type, models_ref):
"""Terminate a Tag/media-type couple
It find the corresponding tag/manifest and remove from the manifestlistmanifest the manifest
1. it terminates the current tag (in all-cases)
2. if the new manifestlist is not empty, it creates a new tag for it
"""
ManifestListManifest = models_ref.ManifestListManifest
manifestlistmanifest_set_name = models_ref.manifestlistmanifest_set_name
media_type_id = ManifestListManifest.media_type.get_id(manifest_media_type(media_type))
with db_transaction():
tag = tag_model.get_tag(repo, tag_name, models_ref)
manifest_list = tag.manifest_list
list_json = manifest_list.manifest_list_json
mlm_query = ManifestListManifest.select().where(
ManifestListManifest.manifest_list == tag.manifest_list
)
list_manifest_ids = sorted([mlm.manifest_id for mlm in mlm_query])
manifestlistmanifest = (
getattr(tag.manifest_list, manifestlistmanifest_set_name)
.where(ManifestListManifest.media_type == media_type_id)
.get()
)
index = list_manifest_ids.index(manifestlistmanifest.manifest_id)
list_manifest_ids.pop(index)
list_json.pop(index)
if not list_json:
tag.lifetime_end = get_epoch_timestamp()
tag.save()
else:
manifestlist = manifest_list_model.get_or_create_manifest_list(
list_json, LIST_MEDIA_TYPE, SCHEMA_VERSION, models_ref
)
manifest_list_model.create_manifestlistmanifest(
manifestlist, list_manifest_ids, list_json, models_ref
)
tag = tag_model.create_or_update_tag(
repo, tag_name, models_ref, manifest_list=manifestlist, tag_kind="release"
)
return tag