org.jboss.ejb.protocol.remote.EJBTransactionOperations Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.jboss.ejb.protocol.remote;
import java.io.IOException;
import jakarta.transaction.SystemException;
import javax.transaction.xa.XAException;
import javax.transaction.xa.Xid;
import org.jboss.ejb._private.Logs;
import org.jboss.ejb.client.EJBClientContext;
import org.jboss.ejb.client.TransactionID;
import org.jboss.ejb.client.XidTransactionID;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.remoting3.Connection;
import org.jboss.remoting3.ConnectionPeerIdentity;
import org.jboss.remoting3.MessageInputStream;
import org.jboss.remoting3.MessageOutputStream;
import org.jboss.remoting3.util.BlockingInvocation;
import org.jboss.remoting3.util.InvocationTracker;
import org.jboss.remoting3.util.StreamUtils;
import org.wildfly.transaction.client.provider.remoting.RemotingOperations;
import org.wildfly.transaction.client.spi.SimpleTransactionControl;
/**
* @author David M. Lloyd
*/
class EJBTransactionOperations implements RemotingOperations {
private final EJBClientChannel channel;
EJBTransactionOperations(final Connection connection) throws IOException {
final EJBClientContext ejbClientContext = EJBClientContext.getCurrent();
final RemoteEJBReceiver receiver = ejbClientContext.getAttachment(RemoteTransportProvider.ATTACHMENT_KEY);
if (receiver != null) {
this.channel = receiver.getClientChannel(connection);
} else {
throw Logs.REMOTING.noRemoteTransportOnEJBContext();
}
}
public void rollback(final Xid xid, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
executeSimpleInvocation(new XidTransactionID(xid), Protocol.TXN_ROLLBACK_REQUEST, false, false, false);
}
public void setRollbackOnly(final Xid xid, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
// no operation
}
public void beforeCompletion(final Xid xid, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
executeSimpleInvocation(new XidTransactionID(xid), Protocol.TXN_BEFORE_COMPLETION_REQUEST, false, false, false);
}
public int prepare(final Xid xid, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
return executeSimpleInvocation(new XidTransactionID(xid), Protocol.TXN_PREPARE_REQUEST, true, false, false);
}
public void forget(final Xid xid, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
executeSimpleInvocation(new XidTransactionID(xid), Protocol.TXN_FORGET_REQUEST, false, false, false);
}
public void commit(final Xid xid, final boolean onePhase, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
executeSimpleInvocation(new XidTransactionID(xid), Protocol.TXN_COMMIT_REQUEST, false, true, onePhase);
}
private int executeSimpleInvocation(final TransactionID transactionID, int type, boolean withAnswer, boolean withParam, boolean param) throws XAException {
final InvocationTracker invocationTracker = channel.getInvocationTracker();
final PlainTransactionInvocation invocation = invocationTracker.addInvocation(PlainTransactionInvocation::new);
try (MessageOutputStream os = invocationTracker.allocateMessage(invocation)) {
os.writeByte(type);
os.writeShort(invocation.getIndex());
final byte[] encoded = transactionID.getEncodedForm();
PackedInteger.writePackedInteger(os, encoded.length);
os.write(encoded);
if (withParam) {
os.writeBoolean(param);
}
} catch (IOException e) {
throw new XAException(XAException.XAER_RMERR);
}
try (BlockingInvocation.Response response = invocation.getResponse()) {
switch (response.getParameter()) {
case Protocol.TXN_RESPONSE: {
final MessageInputStream inputStream = response.getInputStream();
boolean flag = inputStream.readBoolean();
if (flag != withAnswer) {
// unrecognized parameter
throw new XAException(XAException.XAER_RMFAIL);
}
return flag ? PackedInteger.readPackedInteger(inputStream) : 0;
}
case Protocol.APPLICATION_EXCEPTION: {
throw readAppException(channel, response);
}
default: {
throw new XAException(XAException.XAER_RMFAIL);
}
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
invocation.cancel();
throw new XAException(XAException.XAER_RMERR);
} catch (IOException e) {
throw new XAException(XAException.XAER_RMERR);
} finally {
invocationTracker.remove(invocation);
}
}
static XAException readAppException(final EJBClientChannel channel, final BlockingInvocation.Response response) throws XAException {
Exception e;
try (final Unmarshaller unmarshaller = channel.createUnmarshaller()) {
try (MessageInputStream inputStream = response.getInputStream()) {
unmarshaller.start(Marshalling.createByteInput(inputStream));
e = unmarshaller.readObject(Exception.class);
unmarshaller.finish();
// The version is probably < 3 else we would not be here
// drain off attachments so the server doesn't complain
while (inputStream.read() != -1) {
inputStream.skip(Long.MAX_VALUE);
}
}
} catch (IOException | ClassNotFoundException e1) {
throw new XAException(XAException.XAER_RMERR);
}
if (e == null) {
throw new XAException(XAException.XAER_RMFAIL);
}
try {
throw e;
} catch (RuntimeException | XAException e1) {
throw e1;
} catch (Exception e1) {
final XAException xae = new XAException(XAException.XAER_RMERR);
xae.initCause(e1);
return xae;
}
}
static class PlainTransactionInvocation extends BlockingInvocation {
PlainTransactionInvocation(final int index) {
super(index);
}
}
public Xid[] recover(final int flag, final String parentName, final ConnectionPeerIdentity peerIdentity) throws XAException {
assert peerIdentity.getId() == 0;
final InvocationTracker invocationTracker = channel.getInvocationTracker();
final PlainTransactionInvocation invocation = invocationTracker.addInvocation(PlainTransactionInvocation::new);
try (MessageOutputStream os = invocationTracker.allocateMessage(invocation)) {
os.writeByte(Protocol.TXN_RECOVERY_REQUEST);
os.writeShort(invocation.getIndex());
os.writeUTF(parentName);
os.writeInt(flag);
} catch (IOException e) {
throw new XAException(XAException.XAER_RMERR);
}
try (BlockingInvocation.Response response = invocation.getResponse()) {
switch (response.getParameter()) {
case Protocol.TXN_RECOVERY_RESPONSE: {
final MessageInputStream inputStream = response.getInputStream();
int count = StreamUtils.readPackedUnsignedInt31(inputStream);
final Xid[] xids = new Xid[count];
// unmarshall it :(
final Unmarshaller unmarshaller = channel.createUnmarshaller();
unmarshaller.start(Marshalling.createByteInput(inputStream));
for (int i = 0; i < count; i ++) {
xids[i ++] = unmarshaller.readObject(XidTransactionID.class).getXid();
}
unmarshaller.finish();
return xids;
}
case Protocol.APPLICATION_EXCEPTION: {
throw readAppException(channel, response);
}
default: {
throw new XAException(XAException.XAER_RMFAIL);
}
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
invocation.cancel();
throw new XAException(XAException.XAER_RMERR);
} catch (IOException | ClassNotFoundException e) {
throw new XAException(XAException.XAER_RMERR);
} finally {
invocationTracker.remove(invocation);
}
}
public SimpleTransactionControl begin(final ConnectionPeerIdentity peerIdentity) throws SystemException {
assert peerIdentity.getId() == 0;
return new EJBSimpleTransactionControl(channel);
}
}