public void clearAlert(short alertType, long dataCenterId, Long podId) {
   if (alertType != -1) {
     AlertVO alert = _alertDao.getLastAlert(alertType, dataCenterId, podId, null);
     if (alert != null) {
       AlertVO updatedAlert = _alertDao.createForUpdate();
       updatedAlert.setResolved(new Date());
       _alertDao.update(alert.getId(), updatedAlert);
     }
   }
 }
    // TODO:  make sure this handles SSL transport (useAuth is true) and regular
    public void sendAlert(
        short alertType,
        long dataCenterId,
        Long podId,
        Long clusterId,
        String subject,
        String content)
        throws MessagingException, UnsupportedEncodingException {
      AlertVO alert = null;
      if ((alertType != AlertManager.ALERT_TYPE_HOST)
          && (alertType != AlertManager.ALERT_TYPE_USERVM)
          && (alertType != AlertManager.ALERT_TYPE_DOMAIN_ROUTER)
          && (alertType != AlertManager.ALERT_TYPE_CONSOLE_PROXY)
          && (alertType != AlertManager.ALERT_TYPE_STORAGE_MISC)
          && (alertType != AlertManager.ALERT_TYPE_MANAGMENT_NODE)) {
        alert = _alertDao.getLastAlert(alertType, dataCenterId, podId, clusterId);
      }

      if (alert == null) {
        // set up a new alert
        AlertVO newAlert = new AlertVO();
        newAlert.setType(alertType);
        newAlert.setSubject(subject);
        newAlert.setClusterId(clusterId);
        newAlert.setPodId(podId);
        newAlert.setDataCenterId(dataCenterId);
        newAlert.setSentCount(1); // initialize sent count to 1 since we are now sending an alert
        newAlert.setLastSent(new Date());
        _alertDao.persist(newAlert);
      } else {
        if (s_logger.isDebugEnabled()) {
          s_logger.debug(
              "Have already sent: "
                  + alert.getSentCount()
                  + " emails for alert type '"
                  + alertType
                  + "' -- skipping send email");
        }
        return;
      }

      if (_smtpSession != null) {
        SMTPMessage msg = new SMTPMessage(_smtpSession);
        msg.setSender(new InternetAddress(_emailSender, _emailSender));
        msg.setFrom(new InternetAddress(_emailSender, _emailSender));
        for (InternetAddress address : _recipientList) {
          msg.addRecipient(RecipientType.TO, address);
        }
        msg.setSubject(subject);
        msg.setSentDate(new Date());
        msg.setContent(content, "text/plain");
        msg.saveChanges();

        SMTPTransport smtpTrans = null;
        if (_smtpUseAuth) {
          smtpTrans =
              new SMTPSSLTransport(
                  _smtpSession,
                  new URLName("smtp", _smtpHost, _smtpPort, null, _smtpUsername, _smtpPassword));
        } else {
          smtpTrans =
              new SMTPTransport(
                  _smtpSession,
                  new URLName("smtp", _smtpHost, _smtpPort, null, _smtpUsername, _smtpPassword));
        }
        smtpTrans.connect();
        smtpTrans.sendMessage(msg, msg.getAllRecipients());
        smtpTrans.close();
      }
    }