docs: private void uploadThumbImage(StorageNode client, InputStream inputStream,
                                    String masterFilename, FastImageFile fastImageFile) {
          ByteArrayInputStream thumbImageStream = null;
          ThumbImage thumbImage = fastImageFile.getThumbImage();
          try {
              //生成缩略图片
              thumbImageStream = generateThumbImageStream(inputStream, thumbImage);
              // 获取文件大小
              long fileSize = thumbImageStream.available();
              // 获取配置缩略图前缀
              String prefixName = thumbImage.getPrefixName();
              LOGGER.error("获取到缩略图前缀{}", prefixName);
              StorageUploadSlaveFileCommand command = new StorageUploadSlaveFileCommand(thumbImageStream, fileSize,
                      masterFilename, prefixName, fastImageFile.getFileExtName());
              connectionManager.executeFdfsCmd(client.getInetSocketAddress(), command);
  
          } catch (IOException e) {
              LOGGER.error("upload ThumbImage error", e);
              throw new FdfsUploadImageException("upload ThumbImage error", e.getCause());
          } finally {
              IOUtils.closeQuietly(thumbImageStream);
          }
      }