/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.jbpm.test.functional.timer.addon;
import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.concurrent.Callable;
import javax.naming.InitialContext;
import javax.transaction.UserTransaction;
import org.drools.core.time.impl.TimerJobInstance;
import org.jbpm.persistence.timer.GlobalJpaTimerJobInstance;
import org.jbpm.process.core.timer.impl.ThreadPoolSchedulerService;
public class TransactionalThreadPoolSchedulerService extends ThreadPoolSchedulerService {
public TransactionalThreadPoolSchedulerService(int poolSize) {
super(poolSize);
}
@Override
public void internalSchedule(TimerJobInstance timerJobInstance) {
TimerJobInstance proxy = (TimerJobInstance) Proxy.newProxyInstance(this.getClass().getClassLoader(),
new Class[] {Callable.class,
Comparable.class,
TimerJobInstance.class, Serializable.class}, new TransactionalTimerJobInstance(timerJobInstance));
super.internalSchedule(proxy);
}
private class TransactionalTimerJobInstance implements InvocationHandler {
private GlobalJpaTimerJobInstance delegate;
public TransactionalTimerJobInstance(TimerJobInstance timerJobInstance) {
this.delegate = (GlobalJpaTimerJobInstance) timerJobInstance;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
boolean txStarted = false;
UserTransaction ut = null;
try {
if ("call".equals(method.getName())) {
System.out.println("Starting transaction");
ut = InitialContext.doLookup("java:comp/UserTransaction");
ut.begin();
txStarted = true;
}
Object result = method.invoke(delegate, args);
if (txStarted) {
System.out.println("Committing transaction");
ut.commit();
}
return result;
} catch (Exception e ) {
if (txStarted) {
System.out.println("Rolling back transaction");
ut.rollback();
}
throw e;
}
}
}
}