swift_utils.py 文件源码

def get_rings_checksum():
    """Returns sha256 checksum for rings in /etc/swift."""
    sha = hashlib.sha256()
    for ring in SWIFT_RINGS.keys():
        path = os.path.join(SWIFT_CONF_DIR, '{}.{}'
                            .format(ring, SWIFT_RING_EXT))
        if not os.path.isfile(path):
            continue

        with open(path, 'rb') as fd:
            sha.update(fd.read())

    return sha.hexdigest()