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CreateThresholdMonitorServlet.javaAPI DocJBoss 4.2.18830Fri Jul 13 21:02:14 BST 2007org.jboss.console.plugins.monitor

CreateThresholdMonitorServlet

public class CreateThresholdMonitorServlet extends HttpServlet
Created by IntelliJ IDEA. User: wburke Date: Nov 25, 2003 Time: 5:53:01 PM To change this template use Options | File Templates.

Fields Summary
static final long
serialVersionUID
private static final Logger
log
Constructors Summary
Methods Summary
protected voiddoGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)

   
        
             
   
      doit(req, resp);
   
protected voiddoPost(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)

      doit(req, resp);
   
protected voiddoit(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)


      String monitorName = req.getParameter("monitorName").trim();
      log.debug(monitorName);
      String objectName = req.getParameter("objectName").trim();
      log.debug(objectName);
      MBeanServer mbeanServer = MBeanServerLocator.locateJBoss();
      ObjectName oname = null;
      try
      {
         oname = new ObjectName(objectName);
      }
      catch (MalformedObjectNameException e)
      {
         error("Malformed ObjectName ", req, resp);
         return;
      }
      String attribute = req.getParameter("attribute").trim();
      log.debug(attribute);
      Object val = null;
      try
      {
         val = mbeanServer.getAttribute(oname, attribute);
      }
      catch (Exception e)
      {
         error("Unable to pull attribute value from MBean, does the attribute exist? ", req, resp);
         return;
      }
      String threshold = req.getParameter("threshold").trim();
      log.debug(threshold);
      boolean enabled = req.getParameter("enabled") != null;
      log.debug("Enabled: " + enabled);
      boolean persisted = req.getParameter("persisted") != null;
      log.debug("Persisted: " + persisted);
      String period = req.getParameter("period").trim();
      log.debug(period);
      long timePeriod = 0;
      try
      {
         timePeriod = Long.parseLong(period);
      }
      catch (NumberFormatException e)
      {
         error("Illegal format for watch period.", req, resp);
         return;
      }
      String compare = req.getParameter("compare").trim();
      log.debug(compare);
      String[] alerts = req.getParameterValues("alerts");
      if (alerts == null)
      {
         error("you must select at least one alert listener", req, resp);
         return;
      }
      int compareTo = 0;
      if ("gt".equals(compare))
         compareTo = -1;
      else if ("lt".equals(compare))
         compareTo = 1;
      else if ("eq".equals(compare)) compareTo = 0;

      if (persisted)
      {

         try
         {
            Object[] args = {"monitors", monitorName, "-service.xml"};
            String[] signature = {"java.lang.String", "java.lang.String", "java.lang.String"};
            Object rtn = mbeanServer.invoke(new ObjectName("jboss.admin:service=DeploymentFileRepository"), "isStored", args, signature);
            if (((Boolean)rtn).booleanValue())
            {
               error("Monitor with this name already exists", req, resp);
               return;
            }
         }
         catch (Exception ex)
         {
            error("Failed to determine if monitor with that name already exists: " + ex.toString(), req, resp);
            return;
         }
         StringBuffer xml = new StringBuffer("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
         xml.append("<server>\n");

         xml.append("<mbean code=\"org.jboss.monitor.ThresholdMonitor\"\n");
         xml.append("       name=\"jboss.monitor:service=" + monitorName.replace(' ", '_") + "\">\n");
         xml.append("  <attribute name=\"MonitorName\">" + monitorName + "</attribute>\n");
         try
         {
         if (mbeanServer.isInstanceOf(oname, "org.jboss.system.ServiceMBean"))
         {
            xml.append("  <depends optional-attribute-name=\"ObservedObject\">" + objectName + "</depends>\n");
         }
         else
         {
            xml.append("  <attribute name=\"ObservedObject\">" + objectName + "</attribute>\n");
         }
         }
         catch (Exception ex)
         {
            error("failed creating service: " + ex.toString(), req, resp);
            return;
         }
         xml.append("  <attribute name=\"ObservedAttribute\">" + attribute + "</attribute>\n");
         xml.append("  <depends-list optional-attribute-name=\"AlertListeners\">\n");
         for (int i = 0; i < alerts.length; i++)
         {
            xml.append("      <depends-list-element>");
            xml.append(alerts[i].trim());
            xml.append("      </depends-list-element>\n");
         }
         xml.append("  </depends-list>\n");
         xml.append("  <attribute name=\"Threshold\">" + threshold + "</attribute>\n");
         xml.append("  <attribute name=\"Period\">" + timePeriod + "</attribute>\n");
         xml.append("  <attribute name=\"CompareTo\">" + compareTo + "</attribute>\n");
         xml.append("  <attribute name=\"Enabled\">" + enabled + "</attribute>\n");
         xml.append("</mbean>\n</server>");

         try
         {
            Object[] args = {"monitors", monitorName, "-service.xml", xml.toString(), Boolean.TRUE};
            String[] signature = {"java.lang.String", "java.lang.String", "java.lang.String", "java.lang.String", "boolean"};
            mbeanServer.invoke(new ObjectName("jboss.admin:service=DeploymentFileRepository"), "store", args, signature);
         }
         catch (Exception ex)
         {
            error("Failed to create persisted file: " + ex.toString(), req, resp);
            return;
         }
      }
      else
      {
         try
         {
            ThresholdMonitor monitor = new ThresholdMonitor();

            monitor.setMonitorName(monitorName);
            monitor.setObservedObject(oname);
            monitor.setObservedAttribute(attribute);
            monitor.setThreshold(threshold);
            monitor.setEnabled(new Boolean(enabled).booleanValue());
            monitor.setPeriod(timePeriod);
            monitor.setCompareTo(compareTo);
            ArrayList list = new ArrayList();
            for (int i = 0; i < alerts.length; i++)
            {
               list.add(new ObjectName(alerts[i]));
            }
            monitor.setAlertListeners(list);
            mbeanServer.registerMBean(monitor, new ObjectName("jboss.monitor:name=" + monitorName));
            monitor.create();
            monitor.start();
         }
         catch (Exception ex)
         {
            error("Failed to create non-persisted monitor: " + ex.toString(), req, resp);
         }
      }
      req.getRequestDispatcher("/createThresholdMonitorSummary.jsp").forward(req, resp);

   
protected voiderror(java.lang.String msg, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)

      req.setAttribute("error", "Error: " + msg);
      //this.getServletContext().getRequestDispatcher("/createThresholdMonitor.jsp").forward(req, resp);
      req.getRequestDispatcher("/createThresholdMonitor.jsp").forward(req, resp);
      return;