/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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.switchyard.quickstarts.demo.policy.transaction;
import javax.inject.Inject;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.switchyard.component.bean.Reference;
import org.switchyard.component.bean.Service;
import org.switchyard.runtime.util.TransactionManagerLocator;
/**
* Transactional service implementation. To trigger a rollback on the
* current transaction, pass <code>TaskBServiceBean.ROLLBACK</code> as the command name.
*/
@Service(TaskBService.class)
public class TaskBServiceBean implements TaskBService {
/** rollback command for this subtask. */
public static final String ROLLBACK = WorkServiceBean.ROLLBACK + ".B";
// counts the number of times a rollback has occurred
private int _rollbackCounter = 0;
@Inject
@Reference("StoreBService")
private StoreService _storeB;
@Override
public final void doTask(final String command) {
print("Received command => " + command);
Transaction t = null;
try {
t = getCurrentTransaction();
} catch (Exception e) {
print("Failed to get current transcation");
}
if (t == null) {
print("No active transaction");
return;
}
_storeB.store(command);
if (command.contains(ROLLBACK)) {
try {
if (++_rollbackCounter % 4 != 0) {
t.setRollbackOnly();
print("Marked transaction to rollback!");
} else {
print("Rollbacks completed - will be committed");
}
} catch (Exception ex) {
print("Failed to rollback transaction: " + ex.toString());
}
}
}
private Transaction getCurrentTransaction() throws Exception {
TransactionManager tm = TransactionManagerLocator.locateTransactionManager();
return tm.getTransaction();
}
private void print(String message) {
System.out.println(":: TaskBService :: " + message);
}
}