def complete_upload(self, upload_id, len_index_list):
    """
    合并分片

    :param upload_id:
    :param len_index_list:
    :return:
    """
    uploaded_list_parts_clean = []
    part_number_marker = 0
    is_truncated = True
    while is_truncated:
        res = self.s3_client.list_parts(
            Bucket=DESTINATION_BUCKET,
            Key=MULTIPART_UPLOAD_FILE_NAME,
            UploadId=upload_id,
            MaxParts=1000,
            PartNumberMarker=part_number_marker
        )
        next_part_number_marker = res["NextPartNumberMarker"]
        is_truncated = res["IsTruncated"]
        if next_part_number_marker > 0:
            for part_object in res["Parts"]:
                e_tag = part_object["ETag"]
                part_number = part_object["PartNumber"]
                add_up = {
                    "ETag": e_tag,
                    "PartNumber": part_number
                }
                uploaded_list_parts_clean.append(add_up)
        part_number_marker = next_part_number_marker
    if len(uploaded_list_parts_clean) != len_index_list:
        print ("以上传分片数量与源文件分片数量不匹配！！！")
        sys.exit(-1)
    complete_struck_json = {
        "Parts": uploaded_list_parts_clean
    }
    res = self.s3_client.complete_multipart_upload(
        Bucket=DESTINATION_BUCKET,
        Key=MULTIPART_UPLOAD_FILE_NAME,
        UploadId=upload_id,
        MultipartUpload=complete_struck_json
    )