private String getFileNameForRequestData(String uuid) {
    String tmpPath = context.getProperties().get("tmp.dir");
    if (tmpPath == null) {
      LOG.error("tmp.dir is not configured!");
      throw new MisconfigurationFormattedException("tmp.dir");
    }
    return String.format(tmpPath + "/%s.json", uuid);
  }
Generate link for concat
@param request download request
@return response wth request id
@see #concatByRequestId(String)
contrib/views/files/src/main/java/org/apache/ambari/view/filebrowser/DownloadService.java