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org.apache.jk.common.JkMX Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.jk.common;
import org.apache.jk.core.JkHandler;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.Attribute;
import javax.management.MBeanServerFactory;
import java.io.IOException;
/**
* Load the HTTP or RMI adapters for MX4J and JMXRI.
*
* Add "mx.enabled=true" in jk2.properties to enable it.
* You could also select http and/or jrmp protocol,
* with mx.httpPort, mx.httpHost, mxjrmpPort and mx.jrmpPort.
*
* If you run into an error message like
* "SystemId Unknown; Line #12; Column #81; Cannot add attribute name after
* child nodes or before an element is produced. Attribute will be ignored."
* after setting mx.enabled to true, you probably need a newer version
* of Xalan. See the RELEASE-NOTES document section on XML Parsers for
* more information.
*
*/
public class JkMX extends JkHandler
{
MBeanServer mserver;
private boolean enabled=false;
private boolean log4jEnabled=true;
private int httpport=-1;
private String httphost="localhost";
private String authmode="none";
private String authuser=null;
private String authpassword=null;
private int jrmpport=-1;
private String jrmphost="localhost";
private boolean useXSLTProcessor = true;
public JkMX() {
}
/* -------------------- Public methods -------------------- */
/** Enable the MX4J adapters (new way)
*/
public void setEnabled(boolean b) {
enabled=b;
}
public boolean getEnabled() {
return enabled;
}
/** Enable the Log4j MBean)
*/
public void setLog4jEnabled(boolean b) {
log4jEnabled=b;
}
public boolean getLog4jEnabled() {
return log4jEnabled;
}
/** Enable the MX4J adapters (old way, compatible)
*/
public void setPort(int i) {
enabled=(i != -1);
}
public int getPort() {
return ((httpport != -1) ? httpport : jrmpport);
}
/** Enable the MX4J HTTP internal adapter
*/
public void setHttpPort( int i ) {
httpport=i;
}
public int getHttpPort() {
return httpport;
}
public void setHttpHost(String host ) {
this.httphost=host;
}
public String getHttpHost() {
return httphost;
}
public void setAuthMode(String mode) {
authmode=mode;
}
public String getAuthMode() {
return authmode;
}
public void setAuthUser(String user) {
authuser=user;
}
public String getAuthUser() {
return authuser;
}
public void setAuthPassword(String password) {
authpassword=password;
}
public String getAuthPassword() {
return authpassword;
}
/** Enable the MX4J JRMP internal adapter
*/
public void setJrmpPort( int i ) {
jrmpport=i;
}
public int getJrmpPort() {
return jrmpport;
}
public void setJrmpHost(String host ) {
this.jrmphost=host;
}
public String getJrmpHost() {
return jrmphost;
}
public boolean getUseXSLTProcessor() {
return useXSLTProcessor;
}
public void setUseXSLTProcessor(boolean uxsltp) {
useXSLTProcessor = uxsltp;
}
/* ==================== Start/stop ==================== */
ObjectName httpServerName=null;
ObjectName jrmpServerName=null;
/** Initialize the worker. After this call the worker will be
* ready to accept new requests.
*/
public void loadAdapter() throws IOException {
boolean httpAdapterLoaded = false;
boolean jrmpAdapterLoaded = false;
if ((httpport != -1) && classExists("mx4j.adaptor.http.HttpAdaptor")) {
try {
httpServerName = registerObject("mx4j.adaptor.http.HttpAdaptor",
"Http:name=HttpAdaptor");
if( httphost!=null )
mserver.setAttribute(httpServerName, new Attribute("Host", httphost));
mserver.setAttribute(httpServerName, new Attribute("Port", new Integer(httpport)));
if( "none".equals(authmode) || "basic".equals(authmode) || "digest".equals(authmode) )
mserver.setAttribute(httpServerName, new Attribute("AuthenticationMethod", authmode));
if( authuser!=null && authpassword!=null )
mserver.invoke(httpServerName, "addAuthorization",
new Object[] {
authuser,
authpassword},
new String[] { "java.lang.String", "java.lang.String" });
if(useXSLTProcessor) {
ObjectName processorName = registerObject("mx4j.adaptor.http.XSLTProcessor",
"Http:name=XSLTProcessor");
mserver.setAttribute(httpServerName, new Attribute("ProcessorName", processorName));
}
// starts the server
mserver.invoke(httpServerName, "start", null, null);
log.info( "Started MX4J console on host " + httphost + " at port " + httpport);
httpAdapterLoaded = true;
} catch( Throwable t ) {
httpServerName=null;
log.error( "Can't load the MX4J http adapter ", t );
}
}
if ((httpport != -1) && (!httpAdapterLoaded) && classExists("mx4j.tools.adaptor.http.HttpAdaptor")) {
try {
httpServerName = registerObject("mx4j.tools.adaptor.http.HttpAdaptor",
"Http:name=HttpAdaptor");
if( httphost!=null )
mserver.setAttribute(httpServerName, new Attribute("Host", httphost));
mserver.setAttribute(httpServerName, new Attribute("Port", new Integer(httpport)));
if( "none".equals(authmode) || "basic".equals(authmode) || "digest".equals(authmode) )
mserver.setAttribute(httpServerName, new Attribute("AuthenticationMethod", authmode));
if( authuser!=null && authpassword!=null )
mserver.invoke(httpServerName, "addAuthorization",
new Object[] {
authuser,
authpassword},
new String[] { "java.lang.String", "java.lang.String" });
if(useXSLTProcessor) {
ObjectName processorName = registerObject("mx4j.tools.adaptor.http.XSLTProcessor",
"Http:name=XSLTProcessor");
mserver.setAttribute(httpServerName, new Attribute("ProcessorName", processorName));
}
// starts the server
mserver.invoke(httpServerName, "start", null, null);
if(log.isInfoEnabled())
log.info( "Started MX4J console on host " + httphost + " at port " + httpport);
httpAdapterLoaded = true;
} catch( Throwable t ) {
httpServerName=null;
log.error( "Can't load the MX4J http adapter ", t );
}
}
if ((jrmpport != -1) && classExists("mx4j.tools.naming.NamingService")) {
try {
jrmpServerName = registerObject("mx4j.tools.naming.NamingService",
"Naming:name=rmiregistry");
mserver.setAttribute(jrmpServerName, new Attribute("Port",
new Integer(jrmpport)));
mserver.invoke(jrmpServerName, "start", null, null);
if(log.isInfoEnabled())
log.info( "Creating " + jrmpServerName );
// Create the JRMP adaptor
ObjectName adaptor = registerObject("mx4j.adaptor.rmi.jrmp.JRMPAdaptor",
"Adaptor:protocol=jrmp");
mserver.setAttribute(adaptor, new Attribute("JNDIName", "jrmp"));
mserver.invoke( adaptor, "putNamingProperty",
new Object[] {
javax.naming.Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.rmi.registry.RegistryContextFactory"},
new String[] { "java.lang.Object", "java.lang.Object" });
String jrpmurl = "rmi://" + jrmphost + ":" + Integer.toString(jrmpport) ;
mserver.invoke( adaptor, "putNamingProperty",
new Object[] {
javax.naming.Context.PROVIDER_URL,
jrpmurl},
new String[] { "java.lang.Object", "java.lang.Object" });
// Registers the JRMP adaptor in JNDI and starts it
mserver.invoke(adaptor, "start", null, null);
if(log.isInfoEnabled())
log.info( "Creating " + adaptor + " on host " + jrmphost + " at port " + jrmpport);
jrmpAdapterLoaded = true;
} catch( Exception ex ) {
jrmpServerName = null;
log.error( "MX4j RMI adapter not loaded: " + ex.toString());
}
}
if ((httpport != -1) && (! httpAdapterLoaded) && classExists("com.sun.jdmk.comm.HtmlAdaptorServer")) {
try {
httpServerName=registerObject("com.sun.jdmk.comm.HtmlAdaptorServer",
"Adaptor:name=html,port=" + httpport);
if(log.isInfoEnabled())
log.info("Registering the JMX_RI html adapter " + httpServerName + " at port " + httpport);
mserver.setAttribute(httpServerName,
new Attribute("Port", new Integer(httpport)));
mserver.invoke(httpServerName, "start", null, null);
httpAdapterLoaded = true;
} catch( Throwable t ) {
httpServerName = null;
log.error( "Can't load the JMX_RI http adapter " + t.toString() );
}
}
if ((!httpAdapterLoaded) && (!jrmpAdapterLoaded))
log.warn( "No adaptors were loaded but mx.enabled was defined.");
}
public void destroy() {
try {
if(log.isInfoEnabled())
log.info("Stoping JMX ");
if( httpServerName!=null ) {
mserver.invoke(httpServerName, "stop", null, null);
}
if( jrmpServerName!=null ) {
mserver.invoke(jrmpServerName, "stop", null, null);
}
} catch( Throwable t ) {
log.error( "Destroy error" + t );
}
}
public void init() throws IOException {
try {
mserver = getMBeanServer();
if( enabled ) {
loadAdapter();
}
if( log4jEnabled) {
try {
registerObject("org.apache.log4j.jmx.HierarchyDynamicMBean" ,
"log4j:hierarchy=default");
if(log.isInfoEnabled())
log.info("Registering the JMX hierarchy for Log4J ");
} catch( Throwable t ) {
if(log.isInfoEnabled())
log.info("Can't enable log4j mx: ",t);
}
}
} catch( Throwable t ) {
log.error( "Init error", t );
}
}
public void addHandlerCallback( JkHandler w ) {
}
MBeanServer getMBeanServer() {
MBeanServer server;
if( MBeanServerFactory.findMBeanServer(null).size() > 0 ) {
server=(MBeanServer)MBeanServerFactory.findMBeanServer(null).get(0);
} else {
server=MBeanServerFactory.createMBeanServer();
}
return (server);
}
private static boolean classExists(String className) {
try {
Thread.currentThread().getContextClassLoader().loadClass(className);
return true;
} catch(Throwable e) {
if (log.isInfoEnabled())
log.info( "className [" + className + "] does not exist");
return false;
}
}
private ObjectName registerObject(String className, String oName)
throws Exception {
Class c = Class.forName(className);
Object o = c.newInstance();
ObjectName objN = new ObjectName(oName);
mserver.registerMBean(o, objN);
return objN;
}
private static org.apache.juli.logging.Log log=
org.apache.juli.logging.LogFactory.getLog( JkMX.class );
}
