/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.ejb3.remote.protocol.versiontwo;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.ExecutorService;
import javax.transaction.xa.Xid;
import com.arjuna.ats.jta.utils.XAHelper;
import org.jboss.as.ejb3.logging.EjbLogger;
import org.jboss.as.ejb3.remote.EJBRemoteTransactionsRepository;
import org.jboss.as.ejb3.remote.protocol.AbstractMessageHandler;
import org.jboss.as.ejb3.remote.protocol.versionone.ChannelAssociation;
import org.jboss.ejb.client.XidTransactionID;
import org.jboss.ejb.client.remoting.PackedInteger;
import org.jboss.logging.Logger;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.remoting3.MessageOutputStream;
import org.xnio.IoUtils;
/**
* Responsible for handling a transaction "recover" message from an EJB remote client
*
* @author Jaikiran Pai
*/
class TransactionRecoverMessageHandler extends AbstractMessageHandler {
private static final Logger logger = Logger.getLogger(TransactionRecoverMessageHandler.class);
private static final byte HEADER_TX_RECOVER_RESPONSE = 0x1A;
private final ExecutorService executorService;
private final MarshallerFactory marshallerFactory;
private final EJBRemoteTransactionsRepository transactionsRepository;
TransactionRecoverMessageHandler(final EJBRemoteTransactionsRepository transactionsRepository, final MarshallerFactory marshallerFactory,
final ExecutorService executorService) {
this.executorService = executorService;
this.transactionsRepository = transactionsRepository;
this.marshallerFactory = marshallerFactory;
}
@Override
public void processMessage(ChannelAssociation channelAssociation, InputStream inputStream) throws IOException {
final DataInputStream input = new DataInputStream(inputStream);
// read the invocation id
final short invocationId = input.readShort();
final String txParentNodeName = input.readUTF();
final int recoveryFlags = input.readInt();
executorService.submit(new TxRecoveryTask(channelAssociation, invocationId, txParentNodeName, recoveryFlags));
}
private final class TxRecoveryTask implements Runnable {
private final String txParentNodeName;
private final short invocationId;
private final ChannelAssociation channelAssociation;
private final int recoveryFlags;
TxRecoveryTask(final ChannelAssociation channelAssociation, final short invocationId, final String txParentNodeName, final int recoveryFlags) {
this.txParentNodeName = txParentNodeName;
this.invocationId = invocationId;
this.channelAssociation = channelAssociation;
this.recoveryFlags = recoveryFlags;
}
@Override
public void run() {
Xid[] xidsToRecover = new Xid[0];
try {
xidsToRecover = transactionsRepository.getXidsToRecoverForParentNode(this.txParentNodeName, this.recoveryFlags);
} catch (Throwable t) {
try {
EjbLogger.ROOT_LOGGER.errorDuringTransactionRecovery(t);
// write out a failure message to the channel to let the client know that
// the transaction operation failed
TransactionRecoverMessageHandler.this.writeException(channelAssociation, marshallerFactory, invocationId, t, null);
} catch (IOException e) {
EjbLogger.ROOT_LOGGER.couldNotWriteOutToChannel(e);
// close the channel
IoUtils.safeClose(channelAssociation.getChannel());
}
return;
}
try {
if (logger.isTraceEnabled()) {
logger.trace("Returning " + xidsToRecover.length + " Xid(s) to recover for parent node: " + txParentNodeName);
for (final Xid xid : xidsToRecover) {
logger.trace("EJB Xid to recover " + XAHelper.xidToString(xid));
}
}
// write out invocation success message to the channel
this.writeResponse(xidsToRecover);
} catch (IOException e) {
EjbLogger.ROOT_LOGGER.couldNotWriteInvocationSuccessMessage(e);
// close the channel
IoUtils.safeClose(this.channelAssociation.getChannel());
}
}
private void writeResponse(final Xid[] xids) throws IOException {
final DataOutputStream dataOutputStream;
final MessageOutputStream messageOutputStream;
try {
messageOutputStream = channelAssociation.acquireChannelMessageOutputStream();
} catch (Exception e) {
throw EjbLogger.ROOT_LOGGER.failedToOpenMessageOutputStream(e);
}
dataOutputStream = new DataOutputStream(messageOutputStream);
try {
// write header
dataOutputStream.writeByte(HEADER_TX_RECOVER_RESPONSE);
// write invocation id
dataOutputStream.writeShort(invocationId);
PackedInteger.writePackedInteger(dataOutputStream, xids.length);
if (xids.length > 0) {
final Marshaller marshaller = TransactionRecoverMessageHandler.this.prepareForMarshalling(marshallerFactory, dataOutputStream);
for (int i = 0; i < xids.length; i++) {
marshaller.writeObject(new XidTransactionID(xids[i]));
}
// finish marshalling
marshaller.finish();
}
} finally {
channelAssociation.releaseChannelMessageOutputStream(messageOutputStream);
dataOutputStream.close();
}
}
}
}