cvs commit: jakarta-tomcat-catalina/webapps/jmxremote/WEB-INF/src/org/apache/tomcat/servlets/jmxremote JmxRemoteServlet.java

[co...@apache.org]

costin      2004/10/06 08:17:24

  Added:       webapps/jmxremote/WEB-INF web.xml
               webapps/jmxremote/WEB-INF/src/org/apache/tomcat/servlets/jmxremote
                        JmxRemoteServlet.java
  Log:
  Add the jmx remote class.
  mx4j.jar and mx4j-remote ( or JDK1.5 ) are needed to compile.
  
  Revision  Changes    Path
  1.1                  jakarta-tomcat-catalina/webapps/jmxremote/WEB-INF/web.xml
  
  Index: web.xml
  ===================================================================
  <?xml version="1.0" encoding="ISO-8859-1"?>
  
  <!DOCTYPE web-app
      PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
      "http://java.sun.com/dtd/web-app_2_3.dtd">
  
  <web-app>
    <display-name>JMX Remote Connector Loader</display-name>
    <description>
  	Will start Jmx RMI connector if JMX is available.
    </description>
  
    <servlet>
      <servlet-name>JmxRemote</servlet-name>
      <servlet-class>org.apache.tomcat.servlets.jmxremote.JmxRemoteServlet</servlet-class>
      <init-param>
        <param-name>debug</param-name>
        <param-value>0</param-value>
      </init-param>
  <!-- 
  -->    
      <load-on-startup>1</load-on-startup>
    </servlet>
  
  </web-app>
  
  
  
  1.1                  jakarta-tomcat-catalina/webapps/jmxremote/WEB-INF/src/org/apache/tomcat/servlets/jmxremote/JmxRemoteServlet.java
  
  Index: JmxRemoteServlet.java
  ===================================================================
  /*
   * Created on Jul 14, 2004
   *
   * TODO To change the template for this generated file go to
   * Window - Preferences - Java - Code Style - Code Templates
   */
  package org.apache.tomcat.servlets.jmxremote;
  
  import java.io.IOException;
  import java.rmi.registry.LocateRegistry;
  import java.rmi.registry.Registry;
  
  import javax.management.MBeanServer;
  import javax.management.MBeanServerFactory;
  import javax.management.remote.JMXConnectorServer;
  import javax.management.remote.JMXConnectorServerFactory;
  import javax.management.remote.JMXServiceURL;
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  // Using o.a.tomcat.servlets because o.a.catalina won't be loaded unless trusted app 
  
  /**
   * Experimental servlet allowing connectors to be deployed and managed using the 
   * webapp infrastructure.
   * 
   * Connectors can be packaged in a WAR file, deployed and managed using the 
   * normal tools. Configuration is done using web.xml init-params - while this is 
   * not as simple as <connector> tags in server.xml, it may be easier to support
   * in tools and explain to webapp developers.
   * 
   * Since webapp class loader is used - start/stop as well as reloading can be 
   * controlled from the /manager.
   * 
   * Issues:
   *  - may polute the webapps namespace - solution would be to reserve a prefix
   * or use some invalid/special name.    
   *
   * @author Costin Manolache
   */
  public class JmxRemoteServlet extends HttpServlet {
      JMXConnectorServer cntorServer = null; 
      
      public void init(ServletConfig conf) throws ServletException {
          // otherwise log doesn't work
          super.init(conf);
          
          MBeanServer mBeanServer = null;
  
          Registry reg=null;
          
          // TODO: use config to get the registry port, url, pass, user
  
          
          try {
              if( reg==null )
                  reg=LocateRegistry.createRegistry(1099);
          } catch( Throwable t ) {
              log("Can't start registry - it may be already started: " + t);
          }
          
          try {
              mBeanServer = null;
              if (MBeanServerFactory.findMBeanServer(null).size() > 0) {
                  mBeanServer =
                      (MBeanServer) MBeanServerFactory.findMBeanServer(null).get(0);
              } else {
                  mBeanServer = MBeanServerFactory.createMBeanServer();
              }
          } catch( Throwable t ) {
              log("Can't get the mbean server " + t);
              return;
          }
          
          try {
              JMXServiceURL address = new JMXServiceURL("service:jmx:rmi://rmiHost/jndi/rmi://localhost:1099/jndiPath");
              cntorServer = 
                  JMXConnectorServerFactory.newJMXConnectorServer(address, null, mBeanServer);
              cntorServer.start();
          } catch (Throwable e) {
              log("Can't register jmx connector ", e);
          }
      }
  
      /** Stop the connector
       * 
       */
      public void destroy() {
          try {
              if( cntorServer != null ) cntorServer.stop();
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  
      public void service(HttpServletRequest req, HttpServletResponse resp)
          throws ServletException, IOException
      {
          resp.sendError(404);
      }
  
      // I don't know why super.log is broken in init 
  //    public void log(String s) {
  //        System.err.println("JMX rem:" + s);
  //    }
  
  }
  
  
  

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