def upload_virtual_file_thread(self, upload_id, part_number, upload_body, total):
    """

    :param upload_id: multipart upload id
    :param part_number: 分片数
    :param upload_body: 虚拟文件分片内容
    :param total:总分片量
    :return:
    """
    print( "Uploading {} / {}".format(part_number, total))

    retry_time = 0
    while retry_time <= MAX_RETRY_TIME:
        try:
            self.s3_client.upload_part(
                Body=upload_body,
                Bucket=DESTINATION_BUCKET,
                Key=MULTIPART_UPLOAD_FILE_NAME,
                PartNumber=part_number,
                UploadId=upload_id
            )
            break
        except Exception as e:
            retry_time += 1

            if retry_time > MAX_RETRY_TIME:
                print ("已达最大重传次数 {}，退出".format(retry_time))
                sys.exit(-1)
            time.sleep(5)
    print ("                        Complete {} / {} ".format(part_number, total))