views.py 文件源码

def _get_instance(auth, owner, package_name, package_hash):
    instance = (
        Instance.query
        .filter_by(hash=package_hash)
        .options(undefer('contents'))  # Contents is deferred by default.
        .join(Instance.package)
        .filter_by(owner=owner, name=package_name)
        .join(Package.access)
        .filter(Access.user.in_([auth.user, PUBLIC]))
        .one_or_none()
    )
    if instance is None:
        raise ApiException(
            requests.codes.not_found,
            "Package hash does not exist"
        )
    return instance