s3.py 文件源码

def keysum(module, s3, bucket, obj, version=None):
    bucket = s3.lookup(bucket)
    key_check = bucket.get_key(obj, version_id=version)
    if not key_check:
        return None
    md5_remote = key_check.etag[1:-1]
    etag_multipart = '-' in md5_remote # Check for multipart, etag is not md5
    if etag_multipart is True:
        module.fail_json(msg="Files uploaded with multipart of s3 are not supported with checksum, unable to compute checksum.")
    return md5_remote