public static void main(String[] args) {
    String specloc = System.getProperty("spec");
    if (specloc == null) {
      System.out.print("No spec file given, quitting");
      System.exit(0);
    }

    DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss z");
    java.util.Date date = new java.util.Date();
    String startstamp = dateFormat.format(date);

    boolean firstrun = true;

    while (true) {
      System.out.println("Loading XML Spec file: " + specloc);
      // BufferedWriter out = null;
      SocketAcceptor acceptor = null;
      SocketAcceptor statusacceptor = null;

      Vector<MonitorThread> monitorlist = new Vector<MonitorThread>();
      try {
        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
        Document doc = docBuilder.parse(new File(specloc));

        doc.getDocumentElement().normalize();
        String heartbeatportString = doc.getDocumentElement().getAttribute("heartbeatport");
        String statusportString = doc.getDocumentElement().getAttribute("statusport");
        String logfiledir = doc.getDocumentElement().getAttribute("logfiledir");
        String masterlabel = doc.getDocumentElement().getAttribute("label");
        String nodeid = doc.getDocumentElement().getAttribute("id");
        String smtphost = doc.getDocumentElement().getAttribute("smtphost");
        String l1mailto = doc.getDocumentElement().getAttribute("l1mailto");
        String l2mailto = doc.getDocumentElement().getAttribute("l2mailto");
        String l2threshold = doc.getDocumentElement().getAttribute("l2threshold");

        if (heartbeatportString == null || heartbeatportString.equals("")) {
          System.out.println("No heartbeat specified in spec, quitting");
          System.exit(0);
        }
        if (statusportString == null || statusportString.equals("")) {
          System.out.println("No status port specified in spec, quitting");
          System.exit(0);
        }
        if (logfiledir == null || logfiledir.equals("")) {
          System.out.println("No logfile directory location specified in spec, quitting");
          System.exit(0);
        }

        int heartbeatport = Integer.valueOf(heartbeatportString).intValue();
        System.out.println("This Monitor is using port " + heartbeatport + " for heartbeat");

        int statusport = Integer.valueOf(statusportString).intValue();
        System.out.println("This Monitor is using port " + statusport + " for status updates");

        System.out.println("Logging to directory " + logfiledir);
        Log log = new Log(logfiledir);
        log.nodelabel = masterlabel;
        log.setMailer(smtphost, l1mailto, l2mailto, convertStringToInt(l2threshold));

        if (firstrun) {
          firstrun = false;
          log.logit("Monitor Node Started", "start", null);
        }
        log.logit("Logging started", "", null);

        ThreadPing threadping = new ThreadPing(log, false);
        Thread pinger = new Thread(threadping);
        threadping.thisThread = pinger;
        pinger.start();
        log.pinger = threadping;

        // ShutdownHook hook = new ShutdownHook(out);
        // Runtime.getRuntime().addShutdownHook(hook);

        // Starting Heartbeat server

        acceptor = new NioSocketAcceptor();
        acceptor.getSessionConfig().setReuseAddress(true);
        acceptor.getSessionConfig().setTcpNoDelay(true);
        acceptor.setReuseAddress(true);
        // acceptor.getFilterChain().addLast("logger", new LoggingFilter());
        acceptor
            .getFilterChain()
            .addLast(
                "codec",
                new ProtocolCodecFilter(new TextLineCodecFactory(Charset.forName("UTF-8"))));
        acceptor.setReuseAddress(true);
        // acceptor.setCloseOnDeactivation(true);
        acceptor.getSessionConfig().setTcpNoDelay(true);

        acceptor.setDefaultLocalAddress(new InetSocketAddress(heartbeatport));
        Vector<IoSession> sessionlist = new Vector<IoSession>();
        acceptor.setHandler(new HeartBeatHandler(sessionlist));
        acceptor.bind();

        // Starting Path Monitoring
        NodeList listOfServers = doc.getElementsByTagName("check");
        int totalServers = listOfServers.getLength();
        System.out.println("Total # of checks: " + totalServers);

        // Vector<PingMonitorThread> pinglist = new Vector<PingMonitorThread>();
        // Vector<PortMonitorThread> portlist = new Vector<PortMonitorThread>();
        // Vector<HeartbeatMonitorThread> heartbeatlist = new Vector<HeartbeatMonitorThread>();

        System.out.println();
        for (int i = 0; i < totalServers; i++) {
          Node serverNode = listOfServers.item(i);

          Element serverNodeElement = (Element) serverNode;
          String checklabel = serverNodeElement.getAttribute("label");
          String host =
              serverNodeElement
                  .getElementsByTagName("host")
                  .item(0)
                  .getChildNodes()
                  .item(0)
                  .getNodeValue();
          String checktype =
              serverNodeElement
                  .getElementsByTagName("checktype")
                  .item(0)
                  .getChildNodes()
                  .item(0)
                  .getNodeValue();
          boolean enabled = true;
          if (serverNodeElement.getElementsByTagName("enabled").item(0) != null
              && serverNodeElement
                  .getElementsByTagName("enabled")
                  .item(0)
                  .getChildNodes()
                  .item(0)
                  .getNodeValue()
                  .toLowerCase()
                  .equals("false")) {
            enabled = false;
          }
          String successrateString =
              serverNodeElement
                  .getElementsByTagName("successrate")
                  .item(0)
                  .getChildNodes()
                  .item(0)
                  .getNodeValue();
          String retryrateString =
              serverNodeElement
                  .getElementsByTagName("retryrate")
                  .item(0)
                  .getChildNodes()
                  .item(0)
                  .getNodeValue();
          // String l2thresholdoverride =
          // serverNodeElement.getElementsByTagName("l2threshold").item(0).getChildNodes().item(0).getNodeValue();
          String l2thresholdoverride = getElementValue("l2threshold", serverNodeElement);
          // String l1mailtoadd =
          // serverNodeElement.getElementsByTagName("l1mailto").item(0).getChildNodes().item(0).getNodeValue();
          String l1mailtoadd = getElementValue("l1mailto", serverNodeElement);
          // String l2mailtoadd =
          // serverNodeElement.getElementsByTagName("l2mailto").item(0).getChildNodes().item(0).getNodeValue();
          String l2mailtoadd = getElementValue("l2mailto", serverNodeElement);

          int l2thresholdoverrideint = convertStringToInt(l2thresholdoverride);
          String[] l1mailtoaddarray = new String[0];
          String[] l2mailtoaddarray = new String[0];
          if (!l1mailtoadd.equals("")) {
            l1mailtoaddarray = l1mailtoadd.split(",");
          }
          if (!l2mailtoadd.equals("")) {
            l2mailtoaddarray = l2mailtoadd.split(",");
          }

          // System.out.println(l1mailtoaddarray.length + "-" + l2mailtoaddarray.length);

          int successrate = 30;
          int retryrate = 30;
          if (host == null || host.equals("")) {
            System.out.println("No Host, skipping this path");
            enabled = false;
          }

          if (successrateString == null || successrateString.equals("")) {
            System.out.println(
                "No Success Rate defined, using default (" + successrate + " seconds)");
          } else {
            successrate = Integer.valueOf(successrateString).intValue();
          }

          if (retryrateString == null || retryrateString.equals("")) {
            System.out.println("No retry rate defined, using default (" + retryrate + " seconds)");
          } else {
            retryrate = Integer.valueOf(retryrateString).intValue();
          }

          System.out.println(checklabel);

          if (checktype.equals("heartbeat")) {
            String portString =
                serverNodeElement
                    .getElementsByTagName("port")
                    .item(0)
                    .getChildNodes()
                    .item(0)
                    .getNodeValue();

            if (portString == null || portString.equals("")) {
              System.out.println("No Heartbeat, skipping this path");
            } else {
              int heartbeat = Integer.valueOf(portString).intValue();
              System.out.println("Starting Heartbeat Check:");
              System.out.println("Host: " + host);
              System.out.println("Port: " + heartbeat);
              System.out.println();
              HeartbeatMonitorThread m =
                  new HeartbeatMonitorThread(
                      host, heartbeat, log, successrate, retryrate, checklabel);
              m.setAlertOverride(l2thresholdoverrideint, l1mailtoaddarray, l2mailtoaddarray);
              Thread t = new Thread(m);
              m.thisthread = t;
              if (enabled) {
                t.start();
                log.logit(
                    "Starting Heartbeat Check - " + host + ":" + heartbeat,
                    "enable-" + successrate + "-" + retryrate,
                    m.getStatus());
              } else {
                log.logit(
                    "Heartbeat Check - " + host + ":" + heartbeat + " Disabled on start",
                    "disable",
                    m.getStatus());
              }
              monitorlist.add(m);
            }
          } else if (checktype.equals("ping")) {
            System.out.println("Starting Ping Check:");
            System.out.println("Host: " + host);
            System.out.println();
            PingMonitorThread m =
                new PingMonitorThread(host, log, successrate, retryrate, checklabel);
            m.setAlertOverride(l2thresholdoverrideint, l1mailtoaddarray, l2mailtoaddarray);
            Thread t = new Thread(m);
            m.thisthread = t;
            if (enabled) {
              t.start();
              log.logit(
                  "Starting Ping Check - " + host,
                  "enable-" + successrate + "-" + retryrate,
                  m.getStatus());
            } else {
              log.logit("Ping Check - " + host + " Disabled on start", "disable", m.getStatus());
            }
            monitorlist.add(m);
          } else if (checktype.equals("port")) {
            String portString =
                serverNodeElement
                    .getElementsByTagName("port")
                    .item(0)
                    .getChildNodes()
                    .item(0)
                    .getNodeValue();

            if (portString == null || portString.equals("")) {
              System.out.println("No Port Given, skipping");
            } else {
              int heartbeat = Integer.valueOf(portString).intValue();
              System.out.println("Starting Port Check:");
              System.out.println("Host: " + host);
              System.out.println("Port: " + heartbeat);
              System.out.println();

              PortMonitorThread m =
                  new PortMonitorThread(host, heartbeat, log, successrate, retryrate, checklabel);
              m.setAlertOverride(l2thresholdoverrideint, l1mailtoaddarray, l2mailtoaddarray);
              Thread t = new Thread(m);
              m.thisthread = t;
              if (enabled) {
                t.start();
                log.logit(
                    "Starting Port Check - " + host + ":" + heartbeat,
                    "enable-" + successrate + "-" + retryrate,
                    m.getStatus());
              } else {
                log.logit(
                    "Port Check - " + host + ":" + heartbeat + " Disabled on start",
                    "disable",
                    m.getStatus());
              }
              monitorlist.add(m);
            }
          }
        }

        statusacceptor = new NioSocketAcceptor();
        statusacceptor.setReuseAddress(true);
        // statusacceptor.getFilterChain().addLast("logger", new LoggingFilter());
        statusacceptor.getSessionConfig().setTcpNoDelay(true);
        statusacceptor.getSessionConfig().setKeepAlive(true);
        statusacceptor.getSessionConfig().setBothIdleTime(5);
        statusacceptor.getSessionConfig().setReaderIdleTime(5);
        statusacceptor.getSessionConfig().setWriteTimeout(5);
        // statusacceptor.setReuseAddress(true);
        statusacceptor.setCloseOnDeactivation(true);
        statusacceptor.setDefaultLocalAddress(new InetSocketAddress(statusport));
        statusacceptor.setHandler(
            new StatusHttpProtocolHandler(
                monitorlist,
                acceptor,
                statusacceptor,
                log,
                masterlabel,
                nodeid,
                sessionlist,
                startstamp));
        statusacceptor.bind();

        System.out.println("Status Listener activated...");
      } catch (Exception e) {
        e.printStackTrace();
        try {
          // out.flush();
          // out.close();
        } catch (Exception e2) {
        }

        try {
          Thread.sleep(30000);
        } catch (Exception e3) {
        }
      }

      for (int x = 0; x < monitorlist.size(); x++) {
        if (monitorlist.get(x).getThisThread() != null) {
          try {
            monitorlist.get(x).getThisThread().join();
          } catch (Exception e) {
          }
        }
      }

      if (acceptor != null) {
        while (acceptor.isActive() || !acceptor.isDisposed()) {
          try {
            Thread.sleep(1000);
          } catch (Exception e) {
          }
        }
      }

      if (statusacceptor != null) {
        while (statusacceptor.isActive() || !statusacceptor.isDisposed()) {
          try {
            Thread.sleep(1000);
          } catch (Exception e) {
          }
        }
      }
      System.out.println("Main thread has reached end, reloading...");
      /*
      try
      {
      	Thread.sleep(9999999);
      }
      catch (Exception e)
      {
      	e.printStackTrace();
      }
      */
    }
  }