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 ['cache-control', 'content-md5', 'content-type',
                         'content-encoding', 'content-disposition',
                         'date', 'expires']:
            final_headers[k] = metadata[k]
        else:
            final_headers[metadata_prefix + k] = metadata[k]

    return final_headers