public void lockssRun() {
      setPriority(PRIORITY_PARAM_SIZE_CALC, PRIORITY_DEFAULT_SIZE_CALC);
      startWDog(WDOG_PARAM_SIZE_CALC, WDOG_DEFAULT_SIZE_CALC);
      triggerWDogOnExit(true);
      nowRunning();

      while (goOn) {
        try {
          pokeWDog();
          if (sizeCalcQueue.isEmpty()) {
            Deadline timeout = Deadline.in(Constants.HOUR);
            sizeCalcSem.take(timeout);
          }
          RepositoryNode node;
          synchronized (sizeCalcQueue) {
            node = (RepositoryNode) CollectionUtil.getAnElement(sizeCalcQueue);
          }
          if (node != null) {
            long start = TimeBase.nowMs();
            log.debug2("CalcSize start: " + node);
            long dur = 0;
            try {
              doSizeCalc(node);
              dur = TimeBase.nowMs() - start;
              log.debug2("CalcSize finish (" + StringUtil.timeIntervalToString(dur) + "): " + node);
            } catch (RuntimeException e) {
              log.warning("doSizeCalc: " + node, e);
            }
            synchronized (sizeCalcQueue) {
              sizeCalcQueue.remove(node);
            }
            pokeWDog();
            long sleep = sleepTimeToAchieveLoad(dur, sizeCalcMaxLoad);
            Deadline.in(sleep).sleep();
          }
        } catch (InterruptedException e) {
          // just wakeup and check for exit
        }
      }
      if (!goOn) {
        triggerWDogOnExit(false);
      }
    }
  public void loadAuConfigDescrs(Configuration config) throws ConfigurationException {
    super.loadAuConfigDescrs(config);
    this.m_registryUrl = config.get(ConfigParamDescr.BASE_URL.getKey());
    // Now we can construct a valid CC permission checker.
    m_permissionCheckers =
        //       ListUtil.list(new CreativeCommonsPermissionChecker(m_registryUrl));
        ListUtil.list(new CreativeCommonsPermissionChecker());

    paramMap.putLong(
        KEY_AU_NEW_CONTENT_CRAWL_INTERVAL,
        CurrentConfig.getTimeIntervalParam(
            PARAM_REGISTRY_CRAWL_INTERVAL, DEFAULT_REGISTRY_CRAWL_INTERVAL));
    if (log.isDebug2()) {
      log.debug2(
          "Setting Registry AU recrawl interval to "
              + StringUtil.timeIntervalToString(
                  paramMap.getLong(KEY_AU_NEW_CONTENT_CRAWL_INTERVAL)));
    }
  }