/*
* Copyright 2002-2010 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.jca.work.jboss;
import java.lang.reflect.Method;
import javax.management.MBeanServerConnection;
import javax.management.MBeanServerInvocationHandler;
import javax.management.ObjectName;
import javax.naming.InitialContext;
import javax.resource.spi.work.WorkManager;
import org.springframework.util.Assert;
/**
* Utility class for obtaining the JBoss JCA WorkManager,
* typically for use in web applications.
*
* @author Juergen Hoeller
* @since 2.5.2
*/
public abstract class JBossWorkManagerUtils {
private static final String JBOSS_WORK_MANAGER_MBEAN_CLASS_NAME = "org.jboss.resource.work.JBossWorkManagerMBean";
private static final String MBEAN_SERVER_CONNECTION_JNDI_NAME = "jmx/invoker/RMIAdaptor";
private static final String DEFAULT_WORK_MANAGER_MBEAN_NAME = "jboss.jca:service=WorkManager";
/**
* Obtain the default JBoss JCA WorkManager through a JMX lookup
* for the default JBossWorkManagerMBean.
* @see org.jboss.resource.work.JBossWorkManagerMBean
*/
public static WorkManager getWorkManager() {
return getWorkManager(DEFAULT_WORK_MANAGER_MBEAN_NAME);
}
/**
* Obtain the default JBoss JCA WorkManager through a JMX lookup
* for the JBossWorkManagerMBean.
* @param workManagerObjectName the JMX object name to use
* @see org.jboss.resource.work.JBossWorkManagerMBean
*/
public static WorkManager getWorkManager(String mbeanName) {
Assert.hasLength(mbeanName, "JBossWorkManagerMBean name must not be empty");
try {
Class<?> mbeanClass = JBossWorkManagerUtils.class.getClassLoader().loadClass(JBOSS_WORK_MANAGER_MBEAN_CLASS_NAME);
InitialContext jndiContext = new InitialContext();
MBeanServerConnection mconn = (MBeanServerConnection) jndiContext.lookup(MBEAN_SERVER_CONNECTION_JNDI_NAME);
ObjectName objectName = ObjectName.getInstance(mbeanName);
Object workManagerMBean = MBeanServerInvocationHandler.newProxyInstance(mconn, objectName, mbeanClass, false);
Method getInstanceMethod = workManagerMBean.getClass().getMethod("getInstance");
return (WorkManager) getInstanceMethod.invoke(workManagerMBean);
}
catch (Exception ex) {
throw new IllegalStateException(
"Could not initialize JBossWorkManagerTaskExecutor because JBoss API is not available: " + ex);
}
}
}
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