/**
   * Create SessionReaper.
   *
   * @param modelFactory An <code>InternalModelFactory</code>.
   */
  public SessionReaper(final InternalModelFactory modelFactory) {
    super();
    this.latestExecutionTime = System.currentTimeMillis();
    this.logger = new Log4JWrapper(getClass());
    this.queueModel = modelFactory.getQueueModel();
    this.sessionModel = modelFactory.getSessionModel();

    setInterruptThreshold(sessionModel.getConfiguration());
    setTimeout(sessionModel.getConfiguration());
    setTimeoutMargin(sessionModel.getConfiguration());
  }