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WeldTransactionServices.java
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WeldTransactionServices.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.weld.services.bootstrap;
import java.util.function.Consumer;
import javax.transaction.RollbackException;
import javax.transaction.Status;
import javax.transaction.Synchronization;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;
import org.jboss.as.weld.ServiceNames;
import org.jboss.msc.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StopContext;
import org.jboss.weld.transaction.spi.TransactionServices;
import org.wildfly.transaction.client.ContextTransactionManager;
import org.wildfly.transaction.client.LocalUserTransaction;
/**
* Service that implements welds {@link TransactionServices}
* <p>
* This class is thread safe, and does not require a happens-before action between construction and usage
*
* @author Stuart Douglas
* @author <a href="mailto:tadamski@redhat.com">Tomasz Adamski</a>
* @author <a href="mailto:ropalka@redhat.com">Richard Opalka</a>
*/
public class WeldTransactionServices implements TransactionServices, Service {
public static final ServiceName SERVICE_NAME = ServiceNames.WELD_TRANSACTION_SERVICES_SERVICE_NAME;
private final Consumer<WeldTransactionServices> weldTransactionServicesConsumer;
private final boolean jtsEnabled;
public WeldTransactionServices(final boolean jtsEnabled, final Consumer<WeldTransactionServices> weldTransactionServicesConsumer) {
this.jtsEnabled = jtsEnabled;
this.weldTransactionServicesConsumer = weldTransactionServicesConsumer;
}
@Override
public UserTransaction getUserTransaction() {
return LocalUserTransaction.getInstance();
}
@Override
public boolean isTransactionActive() {
try {
final int status = ContextTransactionManager.getInstance().getStatus();
return status == Status.STATUS_ACTIVE ||
status == Status.STATUS_COMMITTING ||
status == Status.STATUS_MARKED_ROLLBACK ||
status == Status.STATUS_PREPARED ||
status == Status.STATUS_PREPARING ||
status == Status.STATUS_ROLLING_BACK;
} catch (SystemException e) {
throw new RuntimeException(e);
}
}
@Override
public void cleanup() {
}
@Override
public void registerSynchronization(Synchronization synchronizedObserver) {
try {
final Synchronization synchronization;
if (!jtsEnabled) {
synchronization = synchronizedObserver;
} else {
synchronization = new JTSSynchronizationWrapper(synchronizedObserver);
}
ContextTransactionManager.getInstance().getTransaction().registerSynchronization(synchronization);
} catch (IllegalStateException e) {
throw new RuntimeException(e);
} catch (RollbackException e) {
throw new RuntimeException(e);
} catch (SystemException e) {
throw new RuntimeException(e);
}
}
@Override
public void start(final StartContext context) {
weldTransactionServicesConsumer.accept(this);
}
@Override
public void stop(final StopContext context) {
weldTransactionServicesConsumer.accept(null);
}
}