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org.wildfly.naming.client.remote.RemoteClientTransport Maven / Gradle / Ivy
/*
* 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.wildfly.naming.client.remote;
import static org.wildfly.naming.client.remote.ProtocolUtils.createMarshaller;
import static org.wildfly.naming.client.remote.ProtocolUtils.createUnmarshaller;
import static org.wildfly.naming.client.remote.ProtocolUtils.readId;
import static org.wildfly.naming.client.remote.ProtocolUtils.writeId;
import static org.wildfly.naming.client.util.NamingUtils.namingException;
import static org.xnio.IoUtils.safeClose;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.IntUnaryOperator;
import javax.naming.Binding;
import javax.naming.CompositeName;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NamingException;
import org.jboss.marshalling.ContextClassResolver;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.MarshallingConfiguration;
import org.jboss.marshalling.ObjectResolver;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.remoting3.Channel;
import org.jboss.remoting3.ClientServiceHandle;
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.wildfly.naming.client.CloseableNamingEnumeration;
import org.wildfly.naming.client.MarshallingCompatibilityHelper;
import org.wildfly.naming.client._private.Messages;
import org.wildfly.naming.client.store.RelativeFederatingContext;
import org.wildfly.naming.client.util.FastHashtable;
import org.wildfly.naming.client.util.NamingUtils;
import org.xnio.Cancellable;
import org.xnio.FutureResult;
import org.xnio.IoFuture;
/**
* The client side of the remote naming transport protocol.
*
* @author David M. Lloyd
*/
final class RemoteClientTransport implements RemoteTransport {
static final ClientServiceHandle SERVICE_HANDLE = new ClientServiceHandle<>(ProtocolUtils.NAMING, RemoteClientTransport::construct);
private static final byte[] initialBytes = {
'n', 'a', 'm', 'i', 'n', 'g'
};
private final MarshallingConfiguration configuration;
private final InvocationTracker tracker;
private final Channel channel;
private final int version;
RemoteClientTransport(final Channel channel, final int version, final MarshallingConfiguration configuration) {
configuration.setClassResolver(new ContextClassResolver());
this.channel = channel;
this.configuration = configuration;
this.version = version;
tracker = new InvocationTracker(channel, version == 1 ? IntUnaryOperator.identity() : RemoteClientTransport::defaultFunction);
}
public Connection getConnection() {
return channel.getConnection();
}
public int getVersion() {
return version;
}
MarshallingConfiguration getConfiguration() {
return configuration;
}
private static int defaultFunction(int random) {
return random & 0xffff;
}
private static IoFuture construct(final Channel channel) {
FutureResult futureResult = new FutureResult<>(channel.getConnection().getEndpoint().getXnioWorker());
channel.receiveMessage(new Channel.Receiver() {
public void handleError(final Channel channel, final IOException error) {
futureResult.setException(error);
}
public void handleEnd(final Channel channel) {
futureResult.setCancelled();
}
public void handleMessage(final Channel channel, final MessageInputStream message) {
// this should be the greeting message, get the version list and start from there
try (MessageInputStream mis = message) {
final byte[] namingHeader = new byte[ProtocolUtils.NAMING_BYTES.length];
mis.read(namingHeader);
if (! Arrays.equals(namingHeader, ProtocolUtils.NAMING_BYTES)) {
futureResult.setException(new IOException(Messages.log.invalidHeader()));
return;
}
int length = mis.readUnsignedByte();
boolean hasOne = false, hasTwo = false;
for (int i = 0; i < length; i ++) {
// Servers present versions >= 2 with the MSB set so that old clients don't get confused.
// We strip the MSB to compensate.
int v = mis.readUnsignedByte() & 0x7f;
if (v == 1) {
hasOne = true;
} else if (v == 2) {
hasTwo = true;
}
}
int version;
if (hasTwo) {
version = 2;
} else if (hasOne) {
version = 1;
} else {
futureResult.setException(new IOException(Messages.log.noCompatibleVersions()));
return;
}
final MarshallingConfiguration configuration = new MarshallingConfiguration();
configuration.setVersion(version == 2 ? 4 : 2);
RemoteClientTransport remoteClientTransport = new RemoteClientTransport(channel, version, configuration);
final List helpers = ProtocolUtils.getMarshallingCompatibilityHelpers();
ObjectResolver resolver = null;
for (MarshallingCompatibilityHelper helper : helpers) {
final ObjectResolver nextResolver = helper.getObjectResolver(remoteClientTransport, true);
if (resolver == null) {
resolver = nextResolver;
} else if (resolver instanceof AggregateObjectResolver) {
((AggregateObjectResolver) resolver).add(nextResolver);
} else {
resolver = new AggregateObjectResolver().add(nextResolver);
}
}
if (resolver != null) remoteClientTransport.getConfiguration().setObjectResolver(resolver);
try (MessageOutputStream os = remoteClientTransport.tracker.allocateMessage()) {
os.write(ProtocolUtils.NAMING_BYTES);
os.writeByte(version);
}
remoteClientTransport.start();
futureResult.setResult(remoteClientTransport);
} catch (IOException e) {
safeClose(channel);
futureResult.setException(new IOException(Messages.log.connectFailed(e)));
return;
}
}
});
futureResult.addCancelHandler(new Cancellable() {
public Cancellable cancel() {
if (futureResult.setCancelled()) {
safeClose(channel);
}
return this;
}
});
return futureResult.getIoFuture();
}
void start() {
channel.receiveMessage(new Channel.Receiver() {
public void handleError(final Channel channel, final IOException error) {
safeClose(channel);
}
public void handleEnd(final Channel channel) {
safeClose(channel);
}
public void handleMessage(final Channel channel, final MessageInputStream message) {
try {
final int messageId = message.readUnsignedByte();
final int id = readId(message, version);
final int result = message.readUnsignedByte();
if (result == Protocol.SUCCESS || result == Protocol.FAILURE) {
tracker.signalResponse(id, messageId, message, true);
} else {
throw Messages.log.outcomeNotUnderstood();
}
channel.receiveMessage(this);
} catch (IOException e) {
safeClose(channel);
safeClose(message);
}
}
});
}
Object lookup(final RemoteContext context, final Name name, final ConnectionPeerIdentity peerIdentity, final boolean preserveLinks) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// lookup
messageOutputStream.writeByte(preserveLinks ? Protocol.CMD_LOOKUP_LINK : Protocol.CMD_LOOKUP);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(NamingUtils.toCompositeName(name).toString());
}
}
final BlockingInvocation.Response response = invocation.getResponse();
try (MessageInputStream is = response.getInputStream()) {
final int parameterType = is.readUnsignedByte();
if (parameterType == Protocol.P_CONTEXT) {
return new RelativeFederatingContext(new FastHashtable<>(context.getEnvironment()), context, NamingUtils.toCompositeName(name));
} else if (parameterType == Protocol.P_OBJECT) {
try (Unmarshaller unmarshaller = createUnmarshaller(is, configuration)) {
return unmarshaller.readObject();
}
} else if (parameterType == Protocol.P_EXCEPTION) {
try (Unmarshaller unmarshaller = createUnmarshaller(is, configuration)) {
final Exception exception = unmarshaller.readObject(Exception.class);
if (exception instanceof NamingException) {
throw (NamingException) exception;
} else {
throw namingException("Failed to lookup", exception);
}
}
} else {
throw Messages.log.invalidResponse();
}
}
} catch (ClassNotFoundException e) {
throw namingException("Failed to lookup", e);
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
void bind(final Name name, final Object obj, final ConnectionPeerIdentity peerIdentity, final boolean rebind) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(rebind ? Protocol.CMD_REBIND : Protocol.CMD_BIND);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
marshaller.writeByte(Protocol.P_OBJECT);
marshaller.writeObject(obj);
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(NamingUtils.toCompositeName(name).toString());
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeObject(obj);
}
}
}
// no content
invocation.getResponse().getInputStream().close();
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
void unbind(final Name name, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(Protocol.CMD_UNBIND);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(NamingUtils.toCompositeName(name).toString());
}
}
// no response content
invocation.getResponse().getInputStream().close();
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
void rename(final Name oldName, final Name newName, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
messageOutputStream.writeByte(Protocol.CMD_RENAME);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(oldName));
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(newName));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(NamingUtils.toCompositeName(oldName).toString());
messageOutputStream.writeUTF(NamingUtils.toCompositeName(newName).toString());
}
}
// no response content
invocation.getResponse().getInputStream().close();
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
void destroySubcontext(final Name name, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(Protocol.CMD_DESTROY_SUBCTX);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(NamingUtils.toCompositeName(name).toString());
}
}
// no response content
invocation.getResponse().getInputStream().close();
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
void createSubcontext(final CompositeName compositeName, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(Protocol.CMD_CREATE_SUBCTX);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(compositeName);
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(compositeName.toString());
}
}
// no response content
invocation.getResponse().getInputStream().close();
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
CloseableNamingEnumeration list(final Name name, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final CompositeName compositeName = NamingUtils.toCompositeName(name);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(Protocol.CMD_LIST);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(compositeName.toString());
}
}
final BlockingInvocation.Response response = invocation.getResponse();
try (MessageInputStream is = response.getInputStream()) {
if (version == 1) {
if (is.readUnsignedByte() != Protocol.P_LIST) {
throw Messages.log.invalidResponse();
}
final int listSize = is.readInt();
final List results = new ArrayList<>(listSize);
try (Unmarshaller unmarshaller = createUnmarshaller(is, configuration)) {
for (int i = 0; i < listSize; i++) {
results.add(unmarshaller.readObject(NameClassPair.class));
}
}
return CloseableNamingEnumeration.fromIterable(results);
} else {
final int listSize = is.readInt();
final List results = new ArrayList<>(listSize);
for (int i = 0; i < listSize; i ++) {
String itemName = is.readUTF();
String itemClass = is.readUTF();
final NameClassPair nameClassPair = new NameClassPair(itemName, itemClass, true);
final CompositeName inNamespace = (CompositeName) compositeName.clone();
inNamespace.add(itemName);
nameClassPair.setNameInNamespace(inNamespace.toString());
results.add(nameClassPair);
}
return CloseableNamingEnumeration.fromIterable(results);
}
}
} catch (ClassNotFoundException e) {
throw namingException("Failed to lookup", e);
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
CloseableNamingEnumeration listBindings(final Name name, final RemoteContext remoteContext, final ConnectionPeerIdentity peerIdentity) throws NamingException {
final int authId = peerIdentity.getId();
final int version = this.version;
if (version == 1 && authId != 0) {
throw Messages.log.connectionSharingUnsupported();
}
final BlockingInvocation invocation = tracker.addInvocation(BlockingInvocation::new);
final CompositeName compositeName = NamingUtils.toCompositeName(name);
try {
try (MessageOutputStream messageOutputStream = tracker.allocateMessage(invocation)) {
// bind
messageOutputStream.writeByte(Protocol.CMD_LIST_BINDINGS);
writeId(messageOutputStream, version, invocation.getIndex());
if (version == 1) {
try (Marshaller marshaller = createMarshaller(messageOutputStream, configuration)) {
marshaller.writeByte(Protocol.P_NAME);
marshaller.writeObject(NamingUtils.toDecomposedCompositeName(name));
}
} else {
messageOutputStream.writeInt(authId);
messageOutputStream.writeUTF(compositeName.toString());
}
}
final BlockingInvocation.Response response = invocation.getResponse();
try (MessageInputStream is = response.getInputStream()) {
if (version == 1 && is.readUnsignedByte() != Protocol.P_LIST) {
throw Messages.log.invalidResponse();
}
final int listSize = is.readInt();
final List results = new ArrayList<>(listSize);
try (Unmarshaller unmarshaller = createUnmarshaller(is, configuration)) {
for (int i = 0; i < listSize; i++) {
final int b = unmarshaller.readUnsignedByte();
if (b == Protocol.P_CONTEXT) {
CompositeName prefix = (CompositeName) compositeName.clone();
final String relName = unmarshaller.readUTF();
prefix.add(relName);
final RelativeFederatingContext context = new RelativeFederatingContext(new FastHashtable(remoteContext.getEnvironment()), remoteContext, prefix);
results.add(new Binding(relName, context, true));
} else if (b == Protocol.P_BINDING) {
results.add(unmarshaller.readObject(Binding.class));
} else {
throw Messages.log.invalidResponse();
}
}
}
return CloseableNamingEnumeration.fromIterable(results);
}
} catch (ClassNotFoundException e) {
throw namingException("Failed to lookup", e);
} catch (IOException e) {
throw Messages.log.operationFailed(e);
} catch (InterruptedException e) {
invocation.cancel();
Thread.currentThread().interrupt();
throw Messages.log.operationInterrupted();
}
}
}
