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/* * Copyright 1999-2001,2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.jboss.web.tomcat.tc5; import java.io.IOException; import java.io.PrintWriter; import java.util.Enumeration; import java.util.Iterator; import java.util.Set; import java.util.Vector; import javax.management.MBeanServer; import javax.management.MBeanServerNotification; import javax.management.Notification; import javax.management.NotificationListener; import javax.management.ObjectInstance; import javax.management.ObjectName; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.modeler.Registry; import org.apache.catalina.util.ServerInfo; import org.apache.catalina.util.StringManager; import org.apache.catalina.manager.Constants; import org.apache.catalina.manager.StatusTransformer; /** * This servlet will display a complete status of the HTTP/1.1 connector. * * @author Remy Maucherat * @version $Revision: 41072 $ $Date: 2006-02-09 02:47:17 -0500 (Thu, 09 Feb 2006) $ */ public class StatusServlet extends HttpServlet implements NotificationListener { // ----------------------------------------------------- Instance Variables /** * The debugging detail level for this servlet. */ private int debug = 0; /** * MBean server. */ protected MBeanServer mBeanServer = null; /** * Vector of protocol handlers object names. */ protected Vector protocolHandlers = new Vector(); /** * Vector of thread pools object names. */ protected Vector threadPools = new Vector(); /** * Vector of request processors object names. */ protected Vector requestProcessors = new Vector(); /** * Vector of global request processors object names. */ protected Vector globalRequestProcessors = new Vector(); /** * The string manager for this package. */ protected static StringManager sm = StringManager.getManager(Constants.Package); // --------------------------------------------------------- Public Methods /** * Initialize this servlet. */ public void init() throws ServletException { // Retrieve the MBean server mBeanServer = Registry.getServer(); // Set our properties from the initialization parameters String value = null; try { value = getServletConfig().getInitParameter("debug"); debug = Integer.parseInt(value); } catch (Throwable t) { ; } try { // Query protocol handlers String onStr = "*:type=ProtocolHandler,*"; ObjectName objectName = new ObjectName(onStr); Set set = mBeanServer.queryMBeans(objectName, null); Iterator iterator = set.iterator(); while (iterator.hasNext()) { ObjectInstance oi = (ObjectInstance) iterator.next(); protocolHandlers.addElement(oi.getObjectName()); } // Query Thread Pools onStr = "*:type=ThreadPool,*"; objectName = new ObjectName(onStr); set = mBeanServer.queryMBeans(objectName, null); iterator = set.iterator(); while (iterator.hasNext()) { ObjectInstance oi = (ObjectInstance) iterator.next(); threadPools.addElement(oi.getObjectName()); } // Query Global Request Processors onStr = "*:type=GlobalRequestProcessor,*"; objectName = new ObjectName(onStr); set = mBeanServer.queryMBeans(objectName, null); iterator = set.iterator(); while (iterator.hasNext()) { ObjectInstance oi = (ObjectInstance) iterator.next(); globalRequestProcessors.addElement(oi.getObjectName()); } // Query Request Processors onStr = "*:type=RequestProcessor,*"; objectName = new ObjectName(onStr); set = mBeanServer.queryMBeans(objectName, null); iterator = set.iterator(); while (iterator.hasNext()) { ObjectInstance oi = (ObjectInstance) iterator.next(); requestProcessors.addElement(oi.getObjectName()); } // Register with MBean server onStr = "JMImplementation:type=MBeanServerDelegate"; objectName = new ObjectName(onStr); mBeanServer.addNotificationListener(objectName, this, null, null); } catch (Exception e) { e.printStackTrace(); } } /** * Finalize this servlet. */ public void destroy() { ; // No actions necessary } /** * Process a GET request for the specified resource. * * @param request The servlet request we are processing * @param response The servlet response we are creating * @throws IOException if an input/output error occurs * @throws ServletException if a servlet-specified error occurs */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { // mode is flag for HTML or XML output int mode = 0; // if ?XML=true, set the mode to XML if ("true".equals(request.getParameter("XML"))) { mode = 1; } StatusTransformer.setContentType(response, mode); PrintWriter writer = response.getWriter(); boolean completeStatus = false; if ("true".equals(request.getParameter("full"))) { completeStatus = true; } // use StatusTransformer to output status if (mode == 0) { // HTML Header Section writer.print(HTML_HEADER); } else if (mode == 1) { writer.write(Constants.XML_DECLARATION); writer.write(Constants.XML_STYLE); writer.write("<status>"); } try { // Display virtual machine statistics StatusTransformer.writeVMState(writer, mode); Enumeration i = threadPools.elements(); while (i.hasMoreElements()) { ObjectName objectName = (ObjectName) i.nextElement(); String name = objectName.getKeyProperty("name"); // use StatusTransformer to output status StatusTransformer.writeConnectorState(writer, objectName, name, mBeanServer, globalRequestProcessors, requestProcessors, mode); } if (completeStatus) { // Note: Retrieving the full status is much slower // use StatusTransformer to output status StatusTransformer.writeDetailedState(writer, mBeanServer, mode); } } catch (Exception e) { throw new ServletException(e); } if (mode == 0) { writer.print(HTML_FOOTER); } else if (mode == 1) { writer.write("</status>"); } } // ------------------------------------------- NotificationListener Methods public void handleNotification(Notification notification, java.lang.Object handback) { if (notification instanceof MBeanServerNotification) { ObjectName objectName = ((MBeanServerNotification) notification).getMBeanName(); if (notification.getType().equals(MBeanServerNotification.REGISTRATION_NOTIFICATION)) { String type = objectName.getKeyProperty("type"); if (type != null) { if (type.equals("ProtocolHandler")) { protocolHandlers.addElement(objectName); } else if (type.equals("ThreadPool")) { threadPools.addElement(objectName); } else if (type.equals("GlobalRequestProcessor")) { globalRequestProcessors.addElement(objectName); } else if (type.equals("RequestProcessor")) { requestProcessors.addElement(objectName); } } } else if (notification.getType().equals(MBeanServerNotification.UNREGISTRATION_NOTIFICATION)) { String type = objectName.getKeyProperty("type"); if (type != null) { if (type.equals("ProtocolHandler")) { protocolHandlers.removeElement(objectName); } else if (type.equals("ThreadPool")) { threadPools.removeElement(objectName); } else if (type.equals("GlobalRequestProcessor")) { globalRequestProcessors.removeElement(objectName); } else if (type.equals("RequestProcessor")) { requestProcessors.removeElement(objectName); } } String j2eeType = objectName.getKeyProperty("j2eeType"); if (j2eeType != null) { } } } } // ------------------------------------------------------- Private Constats private static final String HTML_HEADER = "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>" + "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">" + "<html xmlns=\"http://www.w3.org/1999/xhtml\">" + "<head>" + "<title>Tomcat Status</title>" + "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />" + "<link rel=\"StyleSheet\" href=\"jboss.css\" type=\"text/css\"/>" + "</head>" + "<body>" + "<!-- header begin -->" + "<a href=\"http://www.jboss.org\">" + "<img src=\"logo.gif\" alt=\"JBoss\" id=\"logo\" width=\"226\" height=\"105\" />" + "</a>" + "<div id=\"header\"> </div>" + "<div id=\"navigation_bar\">" + "</div>" + "<!-- header end -->"; private static final String HTML_FOOTER = "<!-- footer begin -->" + "<div id=\"footer\">" + "<div id=\"credits\">JBoss™ Application Server</div>" + "<div id=\"footer_bar\"> </div>" + "</div>" + "<!-- footer end -->" + "</body>" + "</html>"; }