Spring Framework example source code file (WebLogicJndiMBeanServerFactoryBean.java)

This example Spring Framework source code file (WebLogicJndiMBeanServerFactoryBean.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

class, could, could, jndilocatorsupport, management, mbeanhome, mbeanserver, mbeanservernotfoundexception, mbeanservernotfoundexception, naming, namingexception, object, reflection, string, string, weblogic's, weblogic's

The Spring Framework WebLogicJndiMBeanServerFactoryBean.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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.springframework.jmx.support;

import java.lang.reflect.InvocationTargetException;

import javax.management.MBeanServer;
import javax.naming.NamingException;

import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jmx.MBeanServerNotFoundException;
import org.springframework.jndi.JndiLocatorSupport;

/**
 * FactoryBean that obtains a specified WebLogic {@link javax.management.MBeanServer}
 * reference through a WebLogic <code>MBeanHome obtained via a JNDI lookup.
 * By default, the server's local <code>MBeanHome will be obtained.
 *
 * <p>Exposes the MBeanServer for bean references.
 * This FactoryBean is a direct alternative to {@link MBeanServerFactoryBean},
 * which uses standard JMX 1.2 API to access the platform's MBeanServer.
 *
 * <p>Note: There is also a more general {@link WebLogicMBeanServerFactoryBean}
 * for accessing any specified WebLogic <code>MBeanServer,
 * potentially a remote one.
 *
 * <p>NOTE: This class is only intended for use with WebLogic 8.1.
 * On WebLogic 9.x, simply obtain the MBeanServer directly from the JNDI location
 * "java:comp/env/jmx/runtime", for example through the following configuration:
 *
 * <pre>
 * <bean class="org.springframework.jndi.JndiObjectFactoryBean">
 *   <property name="jndiName" value="java:comp/env/jmx/runtime"/>
 * </bean></pre>
 *
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @since 1.2.6
 * @see weblogic.management.MBeanHome#LOCAL_JNDI_NAME
 * @see weblogic.management.MBeanHome#getMBeanServer()
 * @see javax.management.MBeanServer
 * @see MBeanServerFactoryBean
 * @see WebLogicMBeanServerFactoryBean
 */
public class WebLogicJndiMBeanServerFactoryBean extends JndiLocatorSupport
		implements FactoryBean, InitializingBean {

	private static final String WEBLOGIC_MBEAN_HOME_CLASS = "weblogic.management.MBeanHome";

	private static final String LOCAL_JNDI_NAME_FIELD = "LOCAL_JNDI_NAME";

	private static final String GET_MBEAN_SERVER_METHOD = "getMBeanServer";


	private String mbeanHomeName;

	private MBeanServer mbeanServer;


	/**
	 * Specify the JNDI name of the WebLogic MBeanHome object to use
	 * for creating the JMX MBeanServer reference.
	 * <p>Default is MBeanHome.LOCAL_JNDI_NAME
	 * @see weblogic.management.MBeanHome#LOCAL_JNDI_NAME
	 */
	public void setMbeanHomeName(String mbeanHomeName) {
		this.mbeanHomeName = mbeanHomeName;
	}


	public void afterPropertiesSet() throws MBeanServerNotFoundException {
		try {
			String jndiName = this.mbeanHomeName;
			if (jndiName == null) {
				/*
				 * jndiName = MBeanHome.LOCAL_JNDI_NAME;
				 */
				Class mbeanHomeClass = getClass().getClassLoader().loadClass(WEBLOGIC_MBEAN_HOME_CLASS);
				jndiName = (String) mbeanHomeClass.getField(LOCAL_JNDI_NAME_FIELD).get(null);
			}
			Object mbeanHome = lookup(jndiName);

			/*
			 * this.mbeanServer = mbeanHome.getMBeanServer();
			 */
			this.mbeanServer = (MBeanServer)
					mbeanHome.getClass().getMethod(GET_MBEAN_SERVER_METHOD, null).invoke(mbeanHome, null);
		}
		catch (NamingException ex) {
			throw new MBeanServerNotFoundException("Could not find WebLogic's MBeanHome object in JNDI", ex);
		}
		catch (ClassNotFoundException ex) {
			throw new MBeanServerNotFoundException("Could not find WebLogic's MBeanHome class", ex);
		}
		catch (InvocationTargetException ex) {
			throw new MBeanServerNotFoundException(
					"WebLogic's MBeanHome.getMBeanServer method failed", ex.getTargetException());
		}
		catch (Exception ex) {
			throw new MBeanServerNotFoundException(
					"Could not access WebLogic's MBeanHome/getMBeanServer method", ex);
		}
	}


	public Object getObject() {
		return this.mbeanServer;
	}

	public Class getObjectType() {
		return (this.mbeanServer != null ? this.mbeanServer.getClass() : MBeanServer.class);
	}

	public boolean isSingleton() {
		return true;
	}

}