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StatusManagerServlet.javaAPI DocApache Tomcat 6.0.1413260Fri Jul 20 04:20:32 BST 2007org.apache.catalina.manager

StatusManagerServlet

public class StatusManagerServlet extends HttpServlet implements NotificationListener
This servlet will display a complete status of the HTTP/1.1 connector.
author
Remy Maucherat
version
$Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $

Fields Summary
private int
debug
The debugging detail level for this servlet.
protected MBeanServer
mBeanServer
MBean server.
protected Vector
protocolHandlers
Vector of protocol handlers object names.
protected Vector
threadPools
Vector of thread pools object names.
protected Vector
requestProcessors
Vector of request processors object names.
protected Vector
globalRequestProcessors
Vector of global request processors object names.
protected static org.apache.catalina.util.StringManager
sm
The string manager for this package.
Constructors Summary
Methods Summary
public voiddestroy()
Finalize this servlet.


        ;       // No actions necessary
public voiddoGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
Process a GET request for the specified resource.

param
request The servlet request we are processing
param
response The servlet response we are creating
exception
IOException if an input/output error occurs
exception
ServletException if a servlet-specified error occurs


        // mode is flag for HTML or XML output
        int mode = 0;
        // if ?XML=true, set the mode to XML
        if (request.getParameter("XML") != null 
            && request.getParameter("XML").equals("true")) {
            mode = 1;
        }
        StatusTransformer.setContentType(response, mode);

        PrintWriter writer = response.getWriter();

        boolean completeStatus = false;
        if ((request.getPathInfo() != null) 
            && (request.getPathInfo().equals("/all"))) {
            completeStatus = true;
        }
        // use StatusTransformer to output status
        StatusTransformer.writeHeader(writer,mode);

        // Body Header Section
        Object[] args = new Object[2];
        args[0] = request.getContextPath();
        if (completeStatus) {
            args[1] = sm.getString("statusServlet.complete");
        } else {
            args[1] = sm.getString("statusServlet.title");
        }
        // use StatusTransformer to output status
        StatusTransformer.writeBody(writer,args,mode);

        // Manager Section
        args = new Object[9];
        args[0] = sm.getString("htmlManagerServlet.manager");
        args[1] = response.encodeURL(request.getContextPath() + "/html/list");
        args[2] = sm.getString("htmlManagerServlet.list");
        args[3] = response.encodeURL
            (request.getContextPath() + "/" +
             sm.getString("htmlManagerServlet.helpHtmlManagerFile"));
        args[4] = sm.getString("htmlManagerServlet.helpHtmlManager");
        args[5] = response.encodeURL
            (request.getContextPath() + "/" +
             sm.getString("htmlManagerServlet.helpManagerFile"));
        args[6] = sm.getString("htmlManagerServlet.helpManager");
        if (completeStatus) {
            args[7] = response.encodeURL
                (request.getContextPath() + "/status");
            args[8] = sm.getString("statusServlet.title");
        } else {
            args[7] = response.encodeURL
                (request.getContextPath() + "/status/all");
            args[8] = sm.getString("statusServlet.complete");
        }
        // use StatusTransformer to output status
        StatusTransformer.writeManager(writer,args,mode);

        // Server Header Section
        args = new Object[7];
        args[0] = sm.getString("htmlManagerServlet.serverTitle");
        args[1] = sm.getString("htmlManagerServlet.serverVersion");
        args[2] = sm.getString("htmlManagerServlet.serverJVMVersion");
        args[3] = sm.getString("htmlManagerServlet.serverJVMVendor");
        args[4] = sm.getString("htmlManagerServlet.serverOSName");
        args[5] = sm.getString("htmlManagerServlet.serverOSVersion");
        args[6] = sm.getString("htmlManagerServlet.serverOSArch");
        // use StatusTransformer to output status
        StatusTransformer.writePageHeading(writer,args,mode);

        // Server Row Section
        args = new Object[6];
        args[0] = ServerInfo.getServerInfo();
        args[1] = System.getProperty("java.runtime.version");
        args[2] = System.getProperty("java.vm.vendor");
        args[3] = System.getProperty("os.name");
        args[4] = System.getProperty("os.version");
        args[5] = System.getProperty("os.arch");
        // use StatusTransformer to output status
        StatusTransformer.writeServerInfo(writer, args, mode);

        try {

            // Display operating system statistics using APR if available
            StatusTransformer.writeOSState(writer,mode);

            // Display virtual machine statistics
            StatusTransformer.writeVMState(writer,mode);

            Enumeration enumeration = threadPools.elements();
            while (enumeration.hasMoreElements()) {
                ObjectName objectName = (ObjectName) enumeration.nextElement();
                String name = objectName.getKeyProperty("name");
                // use StatusTransformer to output status
                StatusTransformer.writeConnectorState
                    (writer, objectName,
                     name, mBeanServer, globalRequestProcessors,
                     requestProcessors, mode);
            }

            if ((request.getPathInfo() != null) 
                && (request.getPathInfo().equals("/all"))) {
                // 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);
        }

        // use StatusTransformer to output status
        StatusTransformer.writeFooter(writer, mode);
public voidhandleNotification(javax.management.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) {
                    
                }
            }
        }
public voidinit()
Initialize this servlet.



    // --------------------------------------------------------- Public Methods


            
         

        // Retrieve the MBean server
        mBeanServer = Registry.getRegistry(null, null).getMBeanServer();

        // 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();
        }