@Override
    public void evaluate() throws Throwable {
      ProcessCallable<Serializable> processCallable =
          new TestProcessCallable(
              _testClassName, _beforeMethodKeys, _testMethodKey, _afterMethodKeys);

      processCallable = processProcessCallable(processCallable, _testMethodKey);

      ProcessChannel<Serializable> processChannel =
          _processExecutor.execute(_processConfig, processCallable);

      Future<Serializable> future = processChannel.getProcessNoticeableFuture();

      try {
        future.get();
      } catch (ExecutionException ee) {
        Throwable cause = ee.getCause();

        while ((cause instanceof ProcessException)
            || (cause instanceof InvocationTargetException)) {

          cause = cause.getCause();
        }

        throw cause;
      }
    }
  private void _generateVideoXuggler(
      FileVersion fileVersion, File sourceFile, File destinationFile, String containerType)
      throws Exception {

    if (hasPreview(fileVersion, containerType)) {
      return;
    }

    StopWatch stopWatch = new StopWatch();

    stopWatch.start();

    if (PropsValues.DL_FILE_ENTRY_PREVIEW_FORK_PROCESS_ENABLED) {
      ProcessCallable<String> processCallable =
          new LiferayVideoProcessCallable(
              ServerDetector.getServerId(),
              PropsUtil.get(PropsKeys.LIFERAY_HOME),
              Log4JUtil.getCustomLogSettings(),
              sourceFile,
              destinationFile,
              containerType,
              PropsUtil.getProperties(PropsKeys.DL_FILE_ENTRY_PREVIEW_VIDEO, false),
              PropsUtil.getProperties(PropsKeys.XUGGLER_FFPRESET, true));

      ProcessChannel<String> processChannel =
          ProcessExecutorUtil.execute(ClassPathUtil.getPortalProcessConfig(), processCallable);

      Future<String> future = processChannel.getProcessNoticeableFuture();

      String processIdentity = String.valueOf(fileVersion.getFileVersionId());

      futures.put(processIdentity, future);

      future.get();
    } else {
      LiferayConverter liferayConverter =
          new LiferayVideoConverter(
              sourceFile.getCanonicalPath(),
              destinationFile.getCanonicalPath(),
              containerType,
              PropsUtil.getProperties(PropsKeys.DL_FILE_ENTRY_PREVIEW_VIDEO, false),
              PropsUtil.getProperties(PropsKeys.XUGGLER_FFPRESET, true));

      liferayConverter.convert();
    }

    addFileToStore(
        fileVersion.getCompanyId(), PREVIEW_PATH,
        getPreviewFilePath(fileVersion, containerType), destinationFile);

    if (_log.isInfoEnabled()) {
      _log.info(
          "Xuggler generated a "
              + containerType
              + " preview video for "
              + fileVersion.getTitle()
              + " in "
              + stopWatch.getTime()
              + " ms");
    }
  }
  private void _generateThumbnailXuggler(FileVersion fileVersion, File file, int height, int width)
      throws Exception {

    StopWatch stopWatch = new StopWatch();

    stopWatch.start();

    String tempFileId =
        DLUtil.getTempFileId(fileVersion.getFileEntryId(), fileVersion.getVersion());

    File thumbnailTempFile = getThumbnailTempFile(tempFileId);

    try {
      try {
        if (PropsValues.DL_FILE_ENTRY_PREVIEW_FORK_PROCESS_ENABLED) {
          ProcessCallable<String> processCallable =
              new LiferayVideoThumbnailProcessCallable(
                  ServerDetector.getServerId(),
                  PropsUtil.get(PropsKeys.LIFERAY_HOME),
                  Log4JUtil.getCustomLogSettings(),
                  file,
                  thumbnailTempFile,
                  THUMBNAIL_TYPE,
                  height,
                  width,
                  PropsValues.DL_FILE_ENTRY_THUMBNAIL_VIDEO_FRAME_PERCENTAGE);

          ProcessChannel<String> processChannel =
              ProcessExecutorUtil.execute(ClassPathUtil.getPortalProcessConfig(), processCallable);

          Future<String> future = processChannel.getProcessNoticeableFuture();

          String processIdentity = String.valueOf(fileVersion.getFileVersionId());

          futures.put(processIdentity, future);

          future.get();
        } else {
          LiferayConverter liferayConverter =
              new LiferayVideoThumbnailConverter(
                  file.getCanonicalPath(),
                  thumbnailTempFile,
                  THUMBNAIL_TYPE,
                  height,
                  width,
                  PropsValues.DL_FILE_ENTRY_THUMBNAIL_VIDEO_FRAME_PERCENTAGE);

          liferayConverter.convert();
        }
      } catch (CancellationException ce) {
        if (_log.isInfoEnabled()) {
          _log.info(
              "Cancellation received for "
                  + fileVersion.getFileVersionId()
                  + " "
                  + fileVersion.getTitle());
        }
      } catch (Exception e) {
        _log.error(e, e);
      }

      storeThumbnailImages(fileVersion, thumbnailTempFile);

      if (_log.isInfoEnabled()) {
        _log.info(
            "Xuggler generated a thumbnail for "
                + fileVersion.getTitle()
                + " in "
                + stopWatch.getTime()
                + " ms");
      }
    } catch (Exception e) {
      throw new SystemException(e);
    } finally {
      FileUtil.delete(thumbnailTempFile);
    }
  }