utils.py 文件源码

def merge_meta(headers, metadata, provider=None):
    if not provider:
        provider = boto.provider.get_default()
    metadata_prefix = provider.metadata_prefix
    final_headers = headers.copy()
    for k in metadata.keys():
        if k.lower() in boto.s3.key.Key.base_user_settable_fields:
            final_headers[k] = metadata[k]
        else:
            final_headers[metadata_prefix + k] = metadata[k]

    return final_headers