bundles.py 文件源码

def _latest_version_from_object_names(object_names: typing.Iterator[str]) -> str:
    dead_versions = set()  # type: typing.Set[str]
    all_versions = set()  # type: typing.Set[str]
    set_checks = [
        (DSS_BUNDLE_TOMBSTONE_REGEX, dead_versions),
        (DSS_BUNDLE_KEY_REGEX, all_versions),
    ]

    for object_name in object_names:
        for regex, version_set in set_checks:
            match = regex.match(object_name)
            if match:
                _, version = match.groups()
                version_set.add(version)
                break

    version = None

    for current_version in (all_versions - dead_versions):
        if version is None or current_version > version:
            version = current_version

    return version