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Client library for EJB applications working against Wildfly - Java EE Variant
/*
* 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 static java.lang.Math.min;
import static java.security.AccessController.doPrivileged;
import static org.jboss.ejb.protocol.remote.TCCLUtils.getAndSetSafeTCCL;
import static org.jboss.ejb.protocol.remote.TCCLUtils.resetTCCL;
import static org.xnio.IoUtils.safeClose;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InvalidClassException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.net.Inet6Address;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.security.PrivilegedAction;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.function.Function;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
import javax.ejb.EJBException;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.xa.XAException;
import javax.transaction.xa.Xid;
import org.jboss.ejb._private.Logs;
import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.AttachmentKeys;
import org.jboss.ejb.client.ClusterAffinity;
import org.jboss.ejb.client.EJBClient;
import org.jboss.ejb.client.EJBClientInvocationContext;
import org.jboss.ejb.client.EJBIdentifier;
import org.jboss.ejb.client.EJBLocator;
import org.jboss.ejb.client.EJBMethodLocator;
import org.jboss.ejb.client.EJBModuleIdentifier;
import org.jboss.ejb.client.NodeAffinity;
import org.jboss.ejb.client.RequestSendFailedException;
import org.jboss.ejb.client.SessionID;
import org.jboss.ejb.client.TransactionID;
import org.jboss.ejb.client.UserTransactionID;
import org.jboss.ejb.client.XidTransactionID;
import org.jboss.ejb.client.annotation.CompressionHint;
import org.jboss.ejb.server.Association;
import org.jboss.ejb.server.CancelHandle;
import org.jboss.ejb.server.ClusterTopologyListener;
import org.jboss.ejb.server.InvocationRequest;
import org.jboss.ejb.server.ListenerHandle;
import org.jboss.ejb.server.ModuleAvailabilityListener;
import org.jboss.ejb.server.Request;
import org.jboss.ejb.server.SessionOpenRequest;
import org.jboss.marshalling.AbstractClassResolver;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.MarshallingConfiguration;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.marshalling.river.RiverMarshallerFactory;
import org.jboss.remoting3.Channel;
import org.jboss.remoting3.Connection;
import org.jboss.remoting3.MessageInputStream;
import org.jboss.remoting3.MessageOutputStream;
import org.jboss.remoting3._private.IntIndexHashMap;
import org.jboss.remoting3.util.MessageTracker;
import org.wildfly.common.Assert;
import org.wildfly.common.annotation.NotNull;
import org.wildfly.common.function.ExceptionSupplier;
import org.wildfly.security.auth.server.SecurityIdentity;
import org.wildfly.transaction.client.ContextTransactionManager;
import org.wildfly.transaction.client.ImportResult;
import org.wildfly.transaction.client.LocalTransaction;
import org.wildfly.transaction.client.SimpleXid;
import org.wildfly.transaction.client.provider.remoting.RemotingTransactionServer;
import org.wildfly.transaction.client.spi.SubordinateTransactionControl;
/**
* @author David M. Lloyd
* @author Tomasz Adamski
* @author Richard Opalka
* @author Joerg Baesner
*/
@SuppressWarnings("deprecation")
final class EJBServerChannel {
private static final char METHOD_PARAM_TYPE_SEPARATOR = ',';
private final RemotingTransactionServer transactionServer;
private final Channel channel;
private final int version;
private final MessageTracker messageTracker;
private final MarshallerFactory marshallerFactory;
private final MarshallingConfiguration configuration;
private final IntIndexHashMap invocations = new IntIndexHashMap<>(InProgress::getInvId);
private final Function classResolverFilter;
EJBServerChannel(final RemotingTransactionServer transactionServer, final Channel channel, final int version, final MessageTracker messageTracker,
final Function classResolverFilter) {
this.transactionServer = transactionServer;
this.channel = channel;
this.version = version;
this.messageTracker = messageTracker;
final MarshallingConfiguration configuration = new MarshallingConfiguration();
if (version < 3) {
configuration.setClassTable(ProtocolV1ClassTable.INSTANCE);
configuration.setObjectTable(ProtocolV1ObjectTable.INSTANCE);
configuration.setObjectResolver(new ProtocolV1ObjectResolver(channel.getConnection(), true));
configuration.setVersion(2);
} else {
configuration.setObjectTable(ProtocolV3ObjectTable.INSTANCE);
configuration.setObjectResolver(new ProtocolV3ObjectResolver(channel.getConnection(), true));
configuration.setVersion(4);
}
marshallerFactory = new RiverMarshallerFactory();
this.configuration = configuration;
this.classResolverFilter = classResolverFilter;
}
Channel.Receiver getReceiver(final Association association, final ListenerHandle handle1, final ListenerHandle handle2) {
return new ReceiverImpl(association, handle1, handle2);
}
ClusterTopologyListener createTopologyListener() {
return new ClusterTopologyWriter();
}
ModuleAvailabilityListener createModuleListener() {
return new ModuleAvailabilityWriter();
}
class ReceiverImpl implements Channel.Receiver {
private final Association association;
private final ListenerHandle handle1;
private final ListenerHandle handle2;
ReceiverImpl(final Association association, final ListenerHandle handle1, final ListenerHandle handle2) {
this.association = association;
this.handle1 = handle1;
this.handle2 = handle2;
}
public void handleError(final Channel channel, final IOException error) {
final ClassLoader oldCL = getAndSetSafeTCCL();
try {
handle1.close();
handle2.close();
} finally {
resetTCCL(oldCL);
}
}
public void handleEnd(final Channel channel) {
final ClassLoader oldCL = getAndSetSafeTCCL();
try {
handle1.close();
handle2.close();
} finally {
resetTCCL(oldCL);
}
}
public void handleMessage(final Channel channel, final MessageInputStream message) {
channel.receiveMessage(this);
final ClassLoader oldCL = getAndSetSafeTCCL();
try {
final int code = message.readUnsignedByte();
switch (code) {
case Protocol.COMPRESSED_INVOCATION_MESSAGE:
case Protocol.INVOCATION_REQUEST: {
try (InputStream input = code == Protocol.COMPRESSED_INVOCATION_MESSAGE ? new InflaterInputStream(message) : message) {
// now if we get an error, we can respond.
if(code == Protocol.COMPRESSED_INVOCATION_MESSAGE) {
int verify = input.read();
if(verify != Protocol.INVOCATION_REQUEST) {
throw new RuntimeException();
}
}
final int invId = (input.read() << 8) | input.read();
try {
handleInvocationRequest(invId, input);
} catch (IOException | ClassNotFoundException e) {
// write response back to client
writeFailedResponse(invId, e);
}
}
break;
}
case Protocol.OPEN_SESSION_REQUEST: {
final int invId = message.readUnsignedShort();
try {
handleSessionOpenRequest(invId, message);
} catch (IOException e) {
// write response back to client
writeFailedResponse(invId, e);
}
break;
}
case Protocol.CANCEL_REQUEST: {
final int invId = message.readUnsignedShort();
try {
handleCancelRequest(invId, message);
} catch (IOException e) {
// ignored
}
break;
}
case Protocol.TXN_COMMIT_REQUEST:
case Protocol.TXN_ROLLBACK_REQUEST:
case Protocol.TXN_PREPARE_REQUEST:
case Protocol.TXN_FORGET_REQUEST:
case Protocol.TXN_BEFORE_COMPLETION_REQUEST: {
final int invId = message.readUnsignedShort();
try {
handleTxnRequest(code, invId, message);
} catch (IOException e) {
// ignored
}
break;
}
case Protocol.TXN_RECOVERY_REQUEST: {
final int invId = message.readUnsignedShort();
try {
handleTxnRecoverRequest(invId, message);
} catch (IOException e) {
// ignored
}
break;
}
default: {
// unrecognized
Logs.REMOTING.invalidMessageReceived(code);
break;
}
}
} catch (IOException e) {
// nothing we can do.
} finally {
safeClose(message);
resetTCCL(oldCL);
}
}
private void writeTxnResponse(final int invId, final int flag) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.TXN_RESPONSE);
os.writeShort(invId);
os.writeBoolean(true);
PackedInteger.writePackedInteger(os, flag);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnTransactionResponseWrite(invId, channel, e);
}
}
private void writeTxnResponse(final int invId) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.TXN_RESPONSE);
os.writeShort(invId);
os.writeBoolean(false);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnTransactionResponseWrite(invId, channel, e);
}
}
private void handleTxnRequest(final int code, final int invId, final MessageInputStream message) throws IOException {
final byte[] bytes = new byte[PackedInteger.readPackedInteger(message)];
message.readFully(bytes);
final TransactionID transactionID = TransactionID.createTransactionID(bytes);
if (transactionID instanceof XidTransactionID) try {
final SubordinateTransactionControl control = transactionServer.getTransactionService().getTransactionContext().findOrImportTransaction(((XidTransactionID) transactionID).getXid(), 0).getControl();
switch (code) {
case Protocol.TXN_COMMIT_REQUEST: {
boolean opc = message.readBoolean();
control.commit(opc);
writeTxnResponse(invId);
break;
}
case Protocol.TXN_ROLLBACK_REQUEST: {
control.rollback();
writeTxnResponse(invId);
break;
}
case Protocol.TXN_PREPARE_REQUEST: {
int res = control.prepare();
writeTxnResponse(invId, res);
break;
}
case Protocol.TXN_FORGET_REQUEST: {
control.forget();
writeTxnResponse(invId);
break;
}
case Protocol.TXN_BEFORE_COMPLETION_REQUEST: {
control.beforeCompletion();
writeTxnResponse(invId);
break;
}
default: throw Assert.impossibleSwitchCase(code);
}
} catch (XAException e) {
//EJBCLIENT-373
if (!((version <= 2) && (e.errorCode == XAException.XAER_NOTA))) {
writeFailedResponse(invId, e);
}
} else if (transactionID instanceof UserTransactionID) try {
final LocalTransaction localTransaction = transactionServer.removeTransaction(((UserTransactionID) transactionID).getId());
switch (code) {
case Protocol.TXN_COMMIT_REQUEST: {
// Discard unused parameter
message.readBoolean();
if (localTransaction != null) localTransaction.commit();
writeTxnResponse(invId);
break;
}
case Protocol.TXN_ROLLBACK_REQUEST: {
if (localTransaction != null) localTransaction.rollback();
writeTxnResponse(invId);
break;
}
case Protocol.TXN_PREPARE_REQUEST:
case Protocol.TXN_FORGET_REQUEST:
case Protocol.TXN_BEFORE_COMPLETION_REQUEST: {
writeFailedResponse(invId, Logs.TXN.userTxNotSupportedByTxContext());
break;
}
default: throw Assert.impossibleSwitchCase(code);
}
} catch (SystemException | HeuristicMixedException | RollbackException | HeuristicRollbackException e) {
writeFailedResponse(invId, e);
} catch (Throwable t) {
// Narayana uses Errors, Exceptions, and RuntimeExceptions
writeFailedResponse(invId, Logs.TXN.internalSystemErrorWithTx(t));
} else {
throw Assert.unreachableCode();
}
}
void handleTxnRecoverRequest(final int invId, final MessageInputStream message) throws IOException {
final String parentName = message.readUTF();
final int flags = message.readInt();
final Xid[] xids;
try {
xids = transactionServer.getTransactionService().getTransactionContext().getRecoveryInterface().recover(flags, parentName);
} catch (XAException e) {
writeFailedResponse(invId, e);
return;
}
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.TXN_RECOVERY_RESPONSE);
os.writeShort(invId);
PackedInteger.writePackedInteger(os, xids.length);
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
for (Xid xid : xids) {
marshaller.writeObject(new XidTransactionID(xid));
}
marshaller.finish();
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnTransactionRecoveryResponseWrite(invId, channel, e);
}
}
void handleCancelRequest(final int invId, final MessageInputStream message) throws IOException {
final boolean cancelIfRunning = version < 3 || message.readBoolean();
final InProgress inProgress = invocations.get(invId);
if (inProgress != null) {
inProgress.cancel(cancelIfRunning);
}
}
void handleSessionOpenRequest(final int invId, final MessageInputStream inputStream) throws IOException {
final String appName = inputStream.readUTF();
final String moduleName = inputStream.readUTF();
final String distName = inputStream.readUTF();
final String beanName = inputStream.readUTF();
final int securityContext;
final ExceptionSupplier, SystemException> transactionSupplier;
if (version >= 3) {
securityContext = inputStream.readInt();
transactionSupplier = readTransaction(inputStream);
} else {
securityContext = 0;
transactionSupplier = null;
}
final Connection connection = channel.getConnection();
final EJBIdentifier identifier = new EJBIdentifier(appName, moduleName, beanName, distName);
association.receiveSessionOpenRequest(new RemotingSessionOpenRequest(
invId,
identifier,
transactionSupplier,
connection.getLocalIdentity(securityContext)));
}
void handleInvocationRequest(final int invId, final InputStream input) throws IOException, ClassNotFoundException {
final MarshallingConfiguration configuration = EJBServerChannel.this.configuration.clone();
final ServerClassResolver classResolver = new ServerClassResolver(EJBServerChannel.this.classResolverFilter);
configuration.setClassResolver(classResolver);
final Unmarshaller unmarshaller;
final EJBIdentifier identifier;
final EJBMethodLocator methodLocator;
final Connection connection = channel.getConnection();
final SecurityIdentity identity;
if (version >= 3) {
unmarshaller = marshallerFactory.createUnmarshaller(configuration);
unmarshaller.start(Marshalling.createByteInput(input));
identifier = unmarshaller.readObject(EJBIdentifier.class);
methodLocator = unmarshaller.readObject(EJBMethodLocator.class);
int identityId = unmarshaller.readInt();
identity = identityId == 0 ? connection.getLocalIdentity() : connection.getLocalIdentity(identityId);
} else {
assert version <= 2;
DataInputStream data = new DataInputStream(input);
final String methodName = data.readUTF();
// method signature
final String sigString = data.readUTF();
unmarshaller = marshallerFactory.createUnmarshaller(configuration);
unmarshaller.start(Marshalling.createByteInput(data));
String appName = unmarshaller.readObject(String.class);
String moduleName = unmarshaller.readObject(String.class);
String distinctName = unmarshaller.readObject(String.class);
String beanName = unmarshaller.readObject(String.class);
identifier = new EJBIdentifier(appName, moduleName, beanName, distinctName);
// parse out the signature string
final String[] parameterTypeNames;
if (sigString.isEmpty()) {
parameterTypeNames = new String[0];
} else {
parameterTypeNames = sigString.split(String.valueOf(METHOD_PARAM_TYPE_SEPARATOR));
}
methodLocator = new EJBMethodLocator(methodName, parameterTypeNames);
identity = connection.getLocalIdentity();
}
final RemotingInvocationRequest request = new RemotingInvocationRequest(
invId, identifier, methodLocator, classResolver, unmarshaller, identity
);
InProgress value = new InProgress(request);
invocations.put(value);
try {
value.setCancelHandle(association.receiveInvocationRequest(request));
} catch (Throwable t) {
//this should not happen
//but no harm in being defensive
Logs.INVOCATION.unexpectedException(t);
if(t instanceof Exception) {
request.writeException((Exception) t);
} else {
request.writeException(new EJBException(new RuntimeException(t)));
}
}
}
}
ExceptionSupplier, SystemException> readTransaction(final DataInput input) throws IOException {
final int type = input.readUnsignedByte();
if (type == 0) {
return null;
} else if (type == 1) {
// remote user transaction
final int id = input.readInt();
final int timeout = PackedInteger.readPackedInteger(input);
return () -> new ImportResult(transactionServer.getOrBeginTransaction(id, timeout), SubordinateTransactionControl.EMPTY, false);
} else if (type == 2) {
final int fmt = PackedInteger.readPackedInteger(input);
final byte[] gtid = new byte[input.readUnsignedByte()];
input.readFully(gtid);
final byte[] bq = new byte[input.readUnsignedByte()];
input.readFully(bq);
final int timeout = PackedInteger.readPackedInteger(input);
return () -> {
try {
return transactionServer.getTransactionService().getTransactionContext().findOrImportTransaction(new SimpleXid(fmt, gtid, bq), timeout);
} catch (XAException e) {
throw new SystemException(e.getMessage());
}
};
} else {
throw Logs.REMOTING.invalidTransactionType(type);
}
}
private void writeFailedResponse(final int invId, final Throwable e) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.APPLICATION_EXCEPTION);
os.writeShort(invId);
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
marshaller.writeObject(new RequestSendFailedException(e.getMessage() + "@" + channel.getConnection().getPeerURI(), e));
marshaller.writeByte(0);
marshaller.finish();
} catch (IOException e2) {
e2.addSuppressed(e);
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e2);
}
}
abstract class RemotingRequest implements Request {
final int invId;
SessionID sessionId;
final SecurityIdentity identity;
ClusterAffinity strongAffinityUpdate;
NodeAffinity weakAffinityUpdate;
RemotingRequest(final int invId, final SecurityIdentity identity) {
this.invId = invId;
this.identity = identity;
}
public Executor getRequestExecutor() {
return channel.getConnection().getEndpoint().getXnioWorker();
}
public SocketAddress getPeerAddress() {
return channel.getConnection().getPeerAddress();
}
public SocketAddress getLocalAddress() {
return channel.getConnection().getLocalAddress();
}
public String getProtocol() {
return channel.getConnection().getProtocol();
}
public boolean isBlockingCaller() {
return false;
}
public SecurityIdentity getSecurityIdentity() {
return identity;
}
public void writeNoSuchEJB() {
final String message = Logs.REMOTING.remoteMessageNoSuchEJB(getEJBIdentifier());
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.NO_SUCH_EJB);
os.writeShort(invId);
os.writeUTF(message);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void writeWrongViewType() {
final String message = Logs.REMOTING.remoteMessageBadViewType(getEJBIdentifier());
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
if (version >= 3) {
os.writeByte(Protocol.BAD_VIEW_TYPE);
os.writeShort(invId);
os.writeUTF(message);
} else {
os.writeByte(Protocol.APPLICATION_EXCEPTION);
os.writeShort(invId);
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
marshaller.writeObject(Logs.REMOTING.invalidViewTypeForInvocation(message));
marshaller.writeByte(0);
marshaller.finish();
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void writeCancelResponse() {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CANCEL_RESPONSE);
os.writeShort(invId);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void writeNotStateful() {
final String message = Logs.REMOTING.remoteMessageEJBNotStateful(getEJBIdentifier());
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.EJB_NOT_STATEFUL);
os.writeShort(invId);
os.writeUTF(message);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void convertToStateful(@NotNull final SessionID sessionId) throws IllegalArgumentException, IllegalStateException {
Assert.checkNotNullParam("sessionId", sessionId);
final SessionID ourSessionId = this.sessionId;
if (ourSessionId != null) {
if (! sessionId.equals(ourSessionId)) {
throw new IllegalStateException();
}
} else {
this.sessionId = sessionId;
}
}
public C getProviderInterface(Class providerInterfaceType) {
final Connection connection = channel.getConnection();
return providerInterfaceType.isInstance(connection) ? providerInterfaceType.cast(connection) : null;
}
abstract int getEnlistmentStatus();
protected void writeFailure(Exception reason) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.APPLICATION_EXCEPTION);
os.writeShort(invId);
if (version >= 3) os.writeByte(getEnlistmentStatus());
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
marshaller.writeObject(reason);
marshaller.writeByte(0);
marshaller.finish();
} catch (IOException e) {
e.addSuppressed(reason);
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void updateStrongAffinity(@NotNull final Affinity affinity) {
Assert.checkNotNullParam("affinity", affinity);
if (affinity instanceof ClusterAffinity) {
strongAffinityUpdate = (ClusterAffinity) affinity;
}
}
public void updateWeakAffinity(@NotNull final Affinity affinity) {
Assert.checkNotNullParam("affinity", affinity);
if (affinity instanceof NodeAffinity) {
weakAffinityUpdate = (NodeAffinity) affinity;
}
}
}
final class RemotingSessionOpenRequest extends RemotingRequest implements SessionOpenRequest {
private final EJBIdentifier identifier;
final ExceptionSupplier, SystemException> transactionSupplier;
int txnCmd = 0; // assume nobody will ask about the transaction
RemotingSessionOpenRequest(final int invId, final EJBIdentifier identifier, final ExceptionSupplier, SystemException> transactionSupplier, final SecurityIdentity identity) {
super(invId, identity);
this.transactionSupplier = transactionSupplier;
this.identifier = identifier;
}
@NotNull
public EJBIdentifier getEJBIdentifier() {
return identifier;
}
public boolean hasTransaction() {
return transactionSupplier != null;
}
public Transaction getTransaction() throws SystemException, IllegalStateException {
final ExceptionSupplier, SystemException> transactionSupplier = this.transactionSupplier;
if (transactionSupplier == null) {
return null;
}
if (txnCmd != 0) {
throw new IllegalStateException();
}
final ImportResult importResult = transactionSupplier.get();
if (importResult.isNew()) {
txnCmd = 1;
} else {
txnCmd = 2;
}
return importResult.getTransaction();
}
int getEnlistmentStatus() {
return txnCmd;
}
public void writeException(@NotNull final Exception exception) {
Assert.checkNotNullParam("exception", exception);
writeFailure(exception);
}
public void convertToStateful(@NotNull final SessionID sessionId) throws IllegalArgumentException, IllegalStateException {
super.convertToStateful(sessionId);
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.OPEN_SESSION_RESPONSE);
os.writeShort(invId);
final byte[] encodedForm = sessionId.getEncodedForm();
PackedInteger.writePackedInteger(os, encodedForm.length);
os.write(encodedForm);
if (1 <= version && version <= 2) {
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
if (strongAffinityUpdate != null) {
marshaller.writeObject(strongAffinityUpdate);
} else {
marshaller.writeObject(new NodeAffinity(channel.getConnection().getEndpoint().getName()));
}
marshaller.finish();
} else {
assert version >= 3;
os.writeByte(txnCmd);
int updateBits = 0;
if (weakAffinityUpdate != null) {
updateBits |= Protocol.UPDATE_BIT_WEAK_AFFINITY;
}
if (strongAffinityUpdate != null) {
updateBits |= Protocol.UPDATE_BIT_STRONG_AFFINITY;
}
os.writeByte(updateBits);
if (weakAffinityUpdate != null) {
final String nodeName = weakAffinityUpdate.getNodeName();
final byte[] bytes = nodeName.getBytes(StandardCharsets.UTF_8);
PackedInteger.writePackedInteger(os, bytes.length);
os.write(bytes);
}
if (strongAffinityUpdate != null) {
final String clusterName = strongAffinityUpdate.getClusterName();
final byte[] bytes = clusterName.getBytes(StandardCharsets.UTF_8);
PackedInteger.writePackedInteger(os, bytes.length);
os.write(bytes);
}
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBSessionOpenResponseWrite(invId, channel, e);
}
}
}
final class RemotingInvocationRequest extends RemotingRequest implements InvocationRequest {
final EJBIdentifier identifier;
final EJBMethodLocator methodLocator;
final ServerClassResolver classResolver;
final Unmarshaller remaining;
int txnCmd = 0; // assume nobody will ask about the transaction
RemotingInvocationRequest(final int invId, final EJBIdentifier identifier, final EJBMethodLocator methodLocator, final ServerClassResolver classResolver, final Unmarshaller remaining, final SecurityIdentity identity) {
super(invId, identity);
this.identifier = identifier;
this.methodLocator = methodLocator;
this.classResolver = classResolver;
this.remaining = remaining;
}
public void convertToStateful(final SessionID sessionId) throws IllegalArgumentException, IllegalStateException {
if (version < 3) {
throw Logs.REMOTING.cannotAddSessionID();
}
super.convertToStateful(sessionId);
}
public Resolved getRequestContent(final ClassLoader classLoader) throws IOException, ClassNotFoundException {
classResolver.setClassLoader(classLoader);
SetretainContextDataKeys = new HashSet<>();
int responseCompressLevel = 0;
// resolve the rest of everything here
try (Unmarshaller unmarshaller = remaining) {
Affinity weakAffinity = Affinity.NONE;
ExceptionSupplier, SystemException> transactionSupplier = null;
final EJBLocator locator;
if (version >= 3) {
weakAffinity = unmarshaller.readObject(Affinity.class);
if (weakAffinity == null) weakAffinity = Affinity.NONE;
int flags = unmarshaller.readUnsignedByte();
responseCompressLevel = flags & Protocol.COMPRESS_RESPONSE;
transactionSupplier = readTransaction(unmarshaller);
locator = unmarshaller.readObject(EJBLocator.class);
// do identity checks for these strings to guarantee integrity.
// noinspection StringEquality
if (identifier != locator.getIdentifier()) {
throw Logs.REMOTING.mismatchedMethodLocation();
}
} else {
assert version <= 2;
locator = unmarshaller.readObject(EJBLocator.class);
// do identity checks for these strings to guarantee integrity. can't check identifier because that class didn't exist in V2
//noinspection StringEquality
if (identifier.getAppName() != locator.getAppName() ||
identifier.getModuleName() != locator.getModuleName() ||
identifier.getBeanName() != locator.getBeanName() ||
identifier.getDistinctName() != locator.getDistinctName()) {
throw Logs.REMOTING.mismatchedMethodLocation();
}
// Protocol version <= 2 is dealing with the WEAK_AFFINITY_CONTEXT_KEY as an attachment, see writeInvocationResult(final Object result)
retainContextDataKeys.add(Affinity.WEAK_AFFINITY_CONTEXT_KEY);
}
Object[] parameters = new Object[methodLocator.getParameterCount()];
for (int i = 0; i < parameters.length; i ++) {
parameters[i] = unmarshaller.readObject();
}
int attachmentCount = PackedInteger.readPackedInteger(unmarshaller);
final Map attachments = new HashMap<>(attachmentCount);
for (int i = 0; i < attachmentCount; i ++) {
String attName = unmarshaller.readObject(String.class);
if (attName.equals(EJBClientInvocationContext.PRIVATE_ATTACHMENTS_KEY)) {
if (version <= 2) {
// only supported for protocol v1/2 - read out transaction ID
@SuppressWarnings("unchecked")
Map map = (Map) unmarshaller.readObject();
final Object transactionIdObject = map.get(AttachmentKeys.TRANSACTION_ID_KEY);
if (transactionIdObject != null) {
// attach it
final TransactionID transactionId = (TransactionID) transactionIdObject;
// look up the transaction
if (transactionId instanceof UserTransactionID) {
transactionSupplier = () -> new ImportResult(transactionServer.getOrBeginTransaction(
((UserTransactionID) transactionId).getId(), ContextTransactionManager.getGlobalDefaultTransactionTimeout()),
SubordinateTransactionControl.EMPTY, false);
} else if (transactionId instanceof XidTransactionID) {
transactionSupplier = () -> {
try {
return transactionServer.getTransactionService().getTransactionContext().findOrImportTransaction(
((XidTransactionID) transactionId).getXid(), ContextTransactionManager.getGlobalDefaultTransactionTimeout());
} catch (XAException e) {
throw new SystemException(e.getMessage());
}
};
} else {
throw Assert.impossibleSwitchCase(transactionId);
}
}
weakAffinity = (Affinity) map.getOrDefault(AttachmentKeys.WEAK_AFFINITY, weakAffinity);
boolean compressResponse = (Boolean) map.getOrDefault(AttachmentKeys.COMPRESS_RESPONSE, false);
if (compressResponse) {
responseCompressLevel = (Integer) map.getOrDefault(AttachmentKeys.RESPONSE_COMPRESSION_LEVEL, 0);
}
} else {
// discard content for v3
unmarshaller.readObject();
}
} else {
final Object value = unmarshaller.readObject();
if (value != null) {
attachments.put(attName, value);
// add all client requested ContextData keys to the retainContextDataKeys
if(EJBClientInvocationContext.RETURNED_CONTEXT_DATA_KEY.equals(attName)) {
retainContextDataKeys.addAll((Collection) value);
}
}
}
}
attachments.put(EJBClient.SOURCE_ADDRESS_KEY, channel.getConnection().getPeerAddress());
final ExceptionSupplier, SystemException> finalTransactionSupplier = transactionSupplier;
if(version == 2) {
//version 2 did not send compression information in the response stream
//instead it must be read from the class
Method invokedMethod = findMethod(locator.getViewType(), methodLocator);
CompressionHint compressionHint = invokedMethod == null ? null : invokedMethod.getAnnotation(CompressionHint.class);
// then class level
if (compressionHint == null) {
compressionHint = invokedMethod == null ? null : invokedMethod.getDeclaringClass().getAnnotation(CompressionHint.class);
}
if(compressionHint != null) {
if(compressionHint.compressResponse()) {
responseCompressLevel = compressionHint.compressionLevel();
}
}
}
final int finalResponseCompressLevel = responseCompressLevel == 15 ? Deflater.DEFAULT_COMPRESSION : min(responseCompressLevel, 9);
return new Resolved() {
@NotNull
public Map getAttachments() {
return attachments;
}
@NotNull
public Object[] getParameters() {
return parameters;
}
@NotNull
public EJBLocator getEJBLocator() {
return locator;
}
public boolean hasTransaction() {
return finalTransactionSupplier != null;
}
public Transaction getTransaction() throws SystemException, IllegalStateException {
if (finalTransactionSupplier == null) {
return null;
}
if (txnCmd != 0) {
throw new IllegalStateException();
}
final ImportResult importResult = finalTransactionSupplier.get();
if (importResult.isNew()) {
txnCmd = 1;
} else {
txnCmd = 2;
}
return importResult.getTransaction();
}
public void writeInvocationResult(final Object result) {
MessageOutputStream os;
try (MessageOutputStream underlying = messageTracker.openMessageUninterruptibly()) {
if(finalResponseCompressLevel != 0) {
underlying.writeByte(Protocol.COMPRESSED_INVOCATION_MESSAGE);
os = new WrapperMessageOutputStream(underlying, new DeflaterOutputStream(underlying, new Deflater(finalResponseCompressLevel)));
} else {
os = underlying;
}
os.writeByte(Protocol.INVOCATION_RESPONSE);
os.writeShort(invId);
if (version >= 3) {
os.writeByte(txnCmd);
int updateBits = 0;
if (sessionId != null) {
updateBits |= Protocol.UPDATE_BIT_SESSION_ID;
}
if (weakAffinityUpdate != null) {
updateBits |= Protocol.UPDATE_BIT_WEAK_AFFINITY;
}
if (strongAffinityUpdate != null) {
updateBits |= Protocol.UPDATE_BIT_STRONG_AFFINITY;
}
os.writeByte(updateBits);
if (sessionId != null) {
final byte[] bytes = sessionId.getEncodedForm();
PackedInteger.writePackedInteger(os, bytes.length);
os.write(bytes);
}
if (weakAffinityUpdate != null) {
final String nodeName = weakAffinityUpdate.getNodeName();
final byte[] bytes = nodeName.getBytes(StandardCharsets.UTF_8);
PackedInteger.writePackedInteger(os, bytes.length);
os.write(bytes);
}
if (strongAffinityUpdate != null) {
final String clusterName = strongAffinityUpdate.getClusterName();
final byte[] bytes = clusterName.getBytes(StandardCharsets.UTF_8);
PackedInteger.writePackedInteger(os, bytes.length);
os.write(bytes);
}
}
final Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
marshaller.start(new NoFlushByteOutput(Marshalling.createByteOutput(os)));
marshaller.writeObject(result);
// during the unmarshalling of the incoming request, the retainContextDataKeys have been collected
attachments.keySet().retainAll(retainContextDataKeys);
if (version >= 3) {
attachments.remove(Affinity.WEAK_AFFINITY_CONTEXT_KEY);
}
int count = attachments.size();
if (count > 255) {
marshaller.writeByte(255);
} else {
marshaller.writeByte(count);
}
int i = 0;
ProtocolObjectResolver.enableNonSerReplacement();
try {
for (Map.Entry entry : attachments.entrySet()) {
marshaller.writeObject(entry.getKey());
marshaller.writeObject(entry.getValue());
if (i ++ == 255) {
break;
}
}
} finally {
ProtocolObjectResolver.disableNonSerReplacement();
}
marshaller.finish();
os.close();
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
};
}
}
@Override
public void writeProceedAsync() {
if(version >= 3) {
//not used in newer protocols
return;
}
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.PROCEED_ASYNC_RESPONSE);
os.writeShort(invId);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnProceedAsyncResponseWrite(invId, channel, e);
}
}
@NotNull
public EJBIdentifier getEJBIdentifier() {
return identifier;
}
public void writeNoSuchMethod() {
final String message = Logs.REMOTING.remoteMessageNoSuchMethod(methodLocator, identifier);
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.NO_SUCH_METHOD);
os.writeShort(invId);
os.writeUTF(message);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
public void writeSessionNotActive() {
final String message = Logs.REMOTING.remoteMessageSessionNotActive(methodLocator, identifier);
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.NO_SUCH_METHOD);
os.writeShort(invId);
os.writeUTF(message);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
}
}
int getEnlistmentStatus() {
return txnCmd;
}
public void writeException(@NotNull final Exception exception) {
Assert.checkNotNullParam("exception", exception);
writeFailure(exception);
}
public EJBMethodLocator getMethodLocator() {
return methodLocator;
}
void writeCancellation() {
if (version >= 3) try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CANCEL_RESPONSE);
os.writeShort(invId);
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBResponseWrite(invId, channel, e);
} finally {
invocations.removeKey(invId);
} else {
writeFailure(Logs.REMOTING.requestCancelled());
}
}
}
private static Method findMethod(final Class componentView, final EJBMethodLocator ejbMethodLocator) {
final Method[] viewMethods = componentView.getMethods();
for (final Method method : viewMethods) {
if (method.getName().equals(ejbMethodLocator.getMethodName())) {
final Class[] methodParamTypes = method.getParameterTypes();
if (methodParamTypes.length != ejbMethodLocator.getParameterCount()) {
continue;
}
boolean found = true;
for (int i = 0; i < methodParamTypes.length; i++) {
if (!methodParamTypes[i].getName().equals(ejbMethodLocator.getParameterTypeName(i))) {
found = false;
break;
}
}
if (found) {
return method;
}
}
}
return null;
}
static final class InProgress {
private final RemotingInvocationRequest incomingInvocation;
private CancelHandle cancelHandle;
private boolean cancelled = false;
private boolean aggressive = false;
InProgress(final RemotingInvocationRequest incomingInvocation) {
this.incomingInvocation = incomingInvocation;
}
int getInvId() {
return incomingInvocation.invId;
}
CancelHandle getCancelHandle() {
return cancelHandle;
}
synchronized void setCancelHandle(CancelHandle cancelHandle) {
this.cancelHandle = cancelHandle;
if(cancelled) {
cancelHandle.cancel(aggressive);
}
}
synchronized void cancel(boolean aggressive) {
this.cancelled = true;
this.aggressive = aggressive;
if(cancelHandle != null) {
cancelHandle.cancel(aggressive);
}
}
}
static final class ServerClassResolver extends AbstractClassResolver {
private ClassLoader classLoader;
private final Function classResolverFilter;
ServerClassResolver(final Function classResolverFilter) {
super(true);
this.classResolverFilter = classResolverFilter;
}
public Class resolveProxyClass(final Unmarshaller unmarshaller, final String[] interfaces) throws IOException, ClassNotFoundException {
final int length = interfaces.length;
final Class[] classes = new Class[length];
for(int i = 0; i < length; ++i) {
checkFilter(interfaces[i]);
classes[i] = this.loadClass(interfaces[i]);
}
final ClassLoader classLoader;
if (length == 1) {
classLoader = doPrivileged((PrivilegedAction) classes[0]::getClassLoader);
} else {
classLoader = getClassLoader();
}
return Proxy.getProxyClass(classLoader, classes);
}
protected ClassLoader getClassLoader() {
final ClassLoader classLoader = this.classLoader;
return classLoader == null ? getClass().getClassLoader() : classLoader;
}
@Override
public Class resolveClass(final Unmarshaller unmarshaller, final String name, final long serialVersionUID) throws IOException, ClassNotFoundException {
checkFilter(name);
return super.resolveClass(unmarshaller, name, serialVersionUID);
}
void setClassLoader(final ClassLoader classLoader) {
this.classLoader = classLoader == null ? getClass().getClassLoader() : classLoader;
}
private void checkFilter(String className) throws InvalidClassException {
if (classResolverFilter != null && classResolverFilter.apply(className) != Boolean.TRUE) {
throw Logs.REMOTING.cannotResolveFilteredClass(className);
}
}
}
final class ClusterTopologyWriter implements ClusterTopologyListener {
ClusterTopologyWriter() {
}
@Override
public void clusterTopology(final List clusterInfoList) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CLUSTER_TOPOLOGY_COMPLETE);
PackedInteger.writePackedInteger(os, clusterInfoList.size());
for (ClusterInfo clusterInfo : clusterInfoList) {
os.writeUTF(clusterInfo.getClusterName());
final List nodeInfoList = clusterInfo.getNodeInfoList();
PackedInteger.writePackedInteger(os, nodeInfoList.size());
for (NodeInfo nodeInfo : nodeInfoList) {
os.writeUTF(nodeInfo.getNodeName());
final List mappingInfoList = nodeInfo.getMappingInfoList();
PackedInteger.writePackedInteger(os, mappingInfoList.size());
for (MappingInfo mappingInfo : mappingInfoList) {
boolean is6 = mappingInfo.getSourceAddress() instanceof Inet6Address;
if (is6) {
PackedInteger.writePackedInteger(os, mappingInfo.getNetmaskBits() << 1);
} else {
PackedInteger.writePackedInteger(os, mappingInfo.getNetmaskBits() << 1 | 1);
}
os.write(mappingInfo.getSourceAddress().getAddress());
os.writeUTF(mappingInfo.getDestinationAddress());
os.writeShort(mappingInfo.getDestinationPort());
}
}
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBClusterMessageWrite(channel, e);
}
}
@Override
public void clusterRemoval(final List clusterNames) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CLUSTER_TOPOLOGY_REMOVAL);
PackedInteger.writePackedInteger(os, clusterNames.size());
for (String clusterName : clusterNames) {
os.writeUTF(clusterName);
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBClusterMessageWrite(channel, e);
}
}
@Override
public void clusterNewNodesAdded(final ClusterInfo clusterInfo) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CLUSTER_TOPOLOGY_ADDITION);
PackedInteger.writePackedInteger(os, 1);
os.writeUTF(clusterInfo.getClusterName());
final List nodeInfoList = clusterInfo.getNodeInfoList();
PackedInteger.writePackedInteger(os, nodeInfoList.size());
for (NodeInfo nodeInfo : nodeInfoList) {
os.writeUTF(nodeInfo.getNodeName());
final List mappingInfoList = nodeInfo.getMappingInfoList();
PackedInteger.writePackedInteger(os, mappingInfoList.size());
for (MappingInfo mappingInfo : mappingInfoList) {
boolean is6 = mappingInfo.getSourceAddress() instanceof Inet6Address;
if (is6) {
PackedInteger.writePackedInteger(os, mappingInfo.getNetmaskBits() << 1);
} else {
PackedInteger.writePackedInteger(os, mappingInfo.getNetmaskBits() << 1 | 1);
}
os.write(mappingInfo.getSourceAddress().getAddress());
os.writeUTF(mappingInfo.getDestinationAddress());
os.writeShort(mappingInfo.getDestinationPort());
}
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBClusterMessageWrite(channel, e);
}
}
@Override
public void clusterNodesRemoved(final List clusterRemovalInfoList) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(Protocol.CLUSTER_TOPOLOGY_NODE_REMOVAL);
PackedInteger.writePackedInteger(os, clusterRemovalInfoList.size());
for (ClusterRemovalInfo removalInfo : clusterRemovalInfoList) {
os.writeUTF(removalInfo.getClusterName());
final List nodeNamesList = removalInfo.getNodeNames();
PackedInteger.writePackedInteger(os, nodeNamesList.size());
for (String name : nodeNamesList) {
os.writeUTF(name);
}
}
} catch (IOException e) {
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnEJBClusterMessageWrite(channel, e);
}
}
@Override
public Connection getConnection() {
return EJBServerChannel.this.channel.getConnection();
}
}
final class ModuleAvailabilityWriter implements ModuleAvailabilityListener {
ModuleAvailabilityWriter() {
}
public void moduleAvailable(final List modules) {
doWrite(true, modules);
}
public void moduleUnavailable(final List modules) {
doWrite(false, modules);
}
private void doWrite(final boolean available, final List modules) {
try (MessageOutputStream os = messageTracker.openMessageUninterruptibly()) {
os.writeByte(available ? Protocol.MODULE_AVAILABLE : Protocol.MODULE_UNAVAILABLE);
PackedInteger.writePackedInteger(os, modules.size());
for (EJBModuleIdentifier module : modules) {
final String appName = module.getAppName();
os.writeUTF(appName == null ? "" : appName);
final String moduleName = module.getModuleName();
os.writeUTF(moduleName == null ? "" : moduleName);
final String distinctName = module.getDistinctName();
os.writeUTF(distinctName == null ? "" : distinctName);
}
} catch (IOException e) {
// we need to close connection, as module availability messages occurs when establishing a connection to the server
// prior to sending an invocation request (this will prevent a frozen client at the other side)
channel.closeAsync();
// nothing to do at this point; the client doesn't want the response
Logs.REMOTING.ioExceptionOnModuleAvailabilityWrite(channel, e);
}
}
}
}
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