[jboss-remoting-commits] JBoss Remoting SVN: r5501 - in remoting3-multiplex/trunk: src and 6 other directories.

Author: david.lloyd(a)jboss.com Date: 2009-09-16 13:44:19 -0400 (Wed, 16 Sep 2009) New Revision: 5501 Added: remoting3-multiplex/trunk/src/ remoting3-multiplex/trunk/src/main/ remoting3-multiplex/trunk/src/main/java/ remoting3-multiplex/trunk/src/main/java/org/ remoting3-multiplex/trunk/src/main/java/org/jboss/ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/AtomicArrayReferenceArray.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConfigParam.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConnectionConfiguration.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/EstablishedConnection.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/InitialReadHandlerImpl.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/Loggers.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MessageType.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionHandler.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionProvider.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexOptions.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRemoteRequestContext.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandler.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandlerConnector.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/PermitManager.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReadHandlerImpl.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReceivingByteInput.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/RemoteClient.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/SendingByteOutput.java remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/package-info.java Log: Initial import of new impl Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/AtomicArrayReferenceArray.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/AtomicArrayReferenceArray.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/AtomicArrayReferenceArray.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,170 @@ +/* + * JBoss, Home of Professional Open Source. + * Copyright 2009, Red Hat Middleware LLC, 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.remoting3.multiplex; + +import java.lang.reflect.Array; +import java.util.concurrent.atomic.AtomicReferenceArray; + +final class AtomicArrayReferenceArray<V> extends AtomicReferenceArray<V[]> { + + private final V[] emptyArray; + private final Class<V> componentType; + + private static final long serialVersionUID = -4748109403436000080L; + + private AtomicArrayReferenceArray(Class<V> componentType, int length) { + super(length); + this.componentType = componentType; + emptyArray = newInstance(componentType, 0); + } + + public static <V> AtomicArrayReferenceArray<V> create(AtomicReferenceArray<V[]> array, Class<V> componentType) { + return new AtomicArrayReferenceArray<V>(array, componentType); + } + + @SuppressWarnings({ "unchecked" }) + private static <V> V[] copyOf(final Class<V> componentType, V[] old, int newLen) { + final V[] target = newInstance(componentType, newLen); + System.arraycopy(old, 0, target, 0, Math.min(old.length, newLen)); + return target; + } + + public void add(int idx, V value) { + for (;;) { + final V[] oldVal = get(idx); + final int oldLen = oldVal.length; + final V[] newVal = copyOf(componentType, oldVal, oldLen + 1); + newVal[oldLen] = value; + if (compareAndSet(idx, oldVal, newVal)) { + return; + } + } + } + + public boolean addIfAbsent(int idx, V value, boolean identity) { + for (;;) { + final V[] oldVal = get(idx); + final int oldLen = oldVal.length; + if (identity || value == null) { + for (int i = 0; i < oldLen; i++) { + if (oldVal[i] == value) { + return false; + } + } + } else { + for (int i = 0; i < oldLen; i++) { + if (value.equals(oldVal[i])) { + return false; + } + } + } + final V[] newVal = copyOf(componentType, oldVal, oldLen + 1); + newVal[oldLen] = value; + if (compareAndSet(idx, oldVal, newVal)) { + return true; + } + } + } + + public boolean remove(int idx, V value, boolean identity) { + for (;;) { + final V[] oldVal = get(idx); + final int oldLen = oldVal.length; + if (oldLen == 0) { + return false; + } else { + int index = -1; + if (identity || value == null) { + for (int i = 0; i < oldLen; i++) { + if (oldVal[i] == value) { + index = i; + break; + } + } + } else { + for (int i = 0; i < oldLen; i++) { + if (value.equals(oldVal[i])) { + index = i; + break; + } + } + } + if (index == -1) { + return false; + } + final V[] newVal = newInstance(componentType, oldLen - 1); + System.arraycopy(oldVal, 0, newVal, 0, index); + System.arraycopy(oldVal, index + 1, newVal, index, oldLen - index - 1); + if (compareAndSet(idx, oldVal, newVal)) { + return true; + } + } + } + } + + public int removeAll(int idx, V value, boolean identity) { + for (;;) { + final V[] oldVal = get(idx); + final int oldLen = oldVal.length; + if (oldLen == 0) { + return 0; + } else { + final boolean[] removeSlots = new boolean[oldLen]; + int removeCount = 0; + if (identity || value == null) { + for (int i = 0; i < oldLen; i++) { + if (oldVal[i] == value) { + removeSlots[i] = true; + removeCount++; + } + } + } else { + for (int i = 0; i < oldLen; i++) { + if (value.equals(oldVal[i])) { + removeSlots[i] = true; + removeCount++; + } + } + } + if (removeCount == 0) { + return 0; + } + final int newLen = oldLen - removeCount; + final V[] newVal; + if (newLen == 0) { + newVal = emptyArray; + } else { + newVal = newInstance(componentType, newLen); + for (int i = 0, j = 0; i < oldLen; i ++) { + if (! removeSlots[i]) { + newVal[j++] = oldVal[i]; + } + } + } + if (compareAndSet(idx, oldVal, newVal)) { + return removeCount; + } + } + } + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConfigParam.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConfigParam.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConfigParam.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,17 @@ +package org.jboss.remoting3.multiplex; + +/** + * Protocol message configuration parameters used in protocol negotiation phase. Do not delete, insert, or change the order of these + * enum constants. New constants must be added to the end. + */ +enum ConfigParam { + MAX_SUPPORTED_VERSION, + MAX_RECEIVE_SIZE, + MAX_TRANSMIT_SIZE, + MAX_RECEIVE_WINDOW_SIZE, + MAX_TRANSMIT_WINDOW_SIZE, + MAX_OUTBOUND_REQUESTS, + MAX_INBOUND_REQUESTS, + MAX_OUTBOUND_CLIENTS, + MAX_INBOUND_CLIENTS, +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConnectionConfiguration.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConnectionConfiguration.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ConnectionConfiguration.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,160 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +/** + * A configuration object for the multiplex protocol. + */ +public final class ConnectionConfiguration implements Cloneable { + + private int linkMetric = 100; + private int maximumReceiveSize = 0x200; + private int maximumTransmitSize = 0x200; + private int receiveWindowSize = 5; + private int transmitWindowSize = 5; + private int maximumOutboundClients = 0x10; + private int maximumInboundClients = 0x10; + private int maximumOutboundRequests = 0x10; + private int maximumInboundRequests = 0x10; + private int maximumOutboundStreams = 0x20; + private int maximumInboundStreams = 0x20; + + /** + * Construct a new instance. + */ + public ConnectionConfiguration() { + } + + /** + * Get the link metric to assign to this multiplex connection. + * + * @return the link metric + */ + public int getLinkMetric() { + return linkMetric; + } + + /** + * Set the link metric to assign to this multiplex connection. + * + * @param linkMetric the link metric + */ + public void setLinkMetric(final int linkMetric) { + this.linkMetric = linkMetric; + } + + + public int getMaximumReceiveSize() { + return maximumReceiveSize; + } + + public void setMaximumReceiveSize(final int maximumReceiveSize) { + this.maximumReceiveSize = maximumReceiveSize; + } + + public int getMaximumTransmitSize() { + return maximumTransmitSize; + } + + public void setMaximumTransmitSize(final int maximumTransmitSize) { + this.maximumTransmitSize = maximumTransmitSize; + } + + public int getReceiveWindowSize() { + return receiveWindowSize; + } + + public void setReceiveWindowSize(final int receiveWindowSize) { + this.receiveWindowSize = receiveWindowSize; + } + + public int getTransmitWindowSize() { + return transmitWindowSize; + } + + public void setTransmitWindowSize(final int transmitWindowSize) { + this.transmitWindowSize = transmitWindowSize; + } + + public int getMaximumOutboundClients() { + return maximumOutboundClients; + } + + public void setMaximumOutboundClients(final int maximumOutboundClients) { + this.maximumOutboundClients = maximumOutboundClients; + } + + public int getMaximumInboundClients() { + return maximumInboundClients; + } + + public void setMaximumInboundClients(final int maximumInboundClients) { + this.maximumInboundClients = maximumInboundClients; + } + + public int getMaximumOutboundRequests() { + return maximumOutboundRequests; + } + + public void setMaximumOutboundRequests(final int maximumOutboundRequests) { + this.maximumOutboundRequests = maximumOutboundRequests; + } + + public int getMaximumInboundRequests() { + return maximumInboundRequests; + } + + public void setMaximumInboundRequests(final int maximumInboundRequests) { + this.maximumInboundRequests = maximumInboundRequests; + } + + public int getMaximumOutboundStreams() { + return maximumOutboundStreams; + } + + public void setMaximumOutboundStreams(final int maximumOutboundStreams) { + this.maximumOutboundStreams = maximumOutboundStreams; + } + + public int getMaximumInboundStreams() { + return maximumInboundStreams; + } + + public void setMaximumInboundStreams(final int maximumInboundStreams) { + this.maximumInboundStreams = maximumInboundStreams; + } + + /** + * Clone this configuration. + * + * @return the cloned configuration + */ + public ConnectionConfiguration clone() { + try { + final ConnectionConfiguration clone = (ConnectionConfiguration) super.clone(); + return clone; + } catch (CloneNotSupportedException e) { + throw new RuntimeException(e); + } + } +} \ No newline at end of file Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/EstablishedConnection.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/EstablishedConnection.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/EstablishedConnection.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,237 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.nio.ByteBuffer; +import java.util.concurrent.Executor; +import java.util.concurrent.atomic.AtomicReferenceArray; +import java.util.Iterator; +import org.jboss.marshalling.Marshaller; +import org.jboss.marshalling.Unmarshaller; +import org.jboss.remoting3.IndeterminateOutcomeException; +import org.jboss.remoting3.spi.AbstractHandleableCloseable; +import org.jboss.remoting3.spi.Cancellable; +import org.jboss.remoting3.spi.ConnectionHandler; +import org.jboss.remoting3.spi.RemoteRequestContext; +import org.jboss.remoting3.spi.ReplyHandler; +import org.jboss.remoting3.spi.RequestHandler; +import org.jboss.remoting3.spi.RequestHandlerConnector; +import org.jboss.remoting3.spi.Result; +import org.jboss.remoting3.spi.SpiUtils; +import org.jboss.xnio.BufferAllocator; +import org.jboss.xnio.Buffers; +import org.jboss.xnio.Pool; +import org.jboss.xnio.IoFuture; +import org.jboss.xnio.IoUtils; +import org.jboss.xnio.channels.AllocatedMessageChannel; +import org.jboss.xnio.log.Logger; + +/** + * + */ +final class EstablishedConnection extends AbstractHandleableCloseable implements ConnectionHandler { + private static final Logger log = Loggers.MAIN_LOGGER; + + //--== Connection configuration items ==-- + private final Pool<Marshaller> marshallerPool; + private final Pool<Unmarshaller> unmarshallerPool; + private final int linkMetric; + private final Executor executor; + // buffer allocator for outbound message assembly + private final BufferAllocator<ByteBuffer> allocator; + + // running on remote node + private final AtomicReferenceArray<ReplyHandler> remoteRequests; + // sequence for outbound remote requests + private final PermitManager requestPermits; + + // running on local node (key comes from remote side) + private final AtomicReferenceArray<RemoteRequestContext> localRequests; + + // clients whose requests get forwarded to the remote side + private final AtomicReferenceArray<RemoteClient> remoteClients; + // sequence for clients whose requests get forwarded to the remote side + // LOW BIT == 0 + private final PermitManager remoteClientPermits; + + // clients whose requests are handled on this side (key comes from remote side) + private final AtomicReferenceArray<RequestHandler> requestedClients; + // LOW BIT == 1; + private final PermitManager forwardedClientPermits; + + // the data channel + private final AllocatedMessageChannel channel; + // the local connection handler + private final ConnectionHandler localConnectionHandler; + + private final int sendWindowSize; + + private static final ThreadLocal<EstablishedConnection> currentConnection = new ThreadLocal<EstablishedConnection>(); + + public EstablishedConnection(final AllocatedMessageChannel channel, final ConnectionConfiguration configuration, final ConnectionHandler localConnectionHandler) { + super(configuration.getExecutor()); + this.channel = channel; + linkMetric = configuration.getLinkMetric(); + executor = configuration.getExecutor(); + if (executor == null) { + throw new NullPointerException("executor is null"); + } + allocator = Buffers.createHeapByteBufferAllocator(configuration.getMaximumTransmitSize()); + marshallerPool = configuration.getMarshallerPool(); + unmarshallerPool = configuration.getUnmarshallerPool(); + final int maximumInboundRequests = configuration.getMaximumInboundRequests(); + remoteRequests = new AtomicReferenceArray<ReplyHandler>(maximumInboundRequests); + requestPermits = new PermitManager(maximumInboundRequests); + final int maximumOutboundRequests = configuration.getMaximumOutboundRequests(); + localRequests = new AtomicReferenceArray<RemoteRequestContext>(maximumOutboundRequests); + final int maximumOutboundClients = configuration.getMaximumOutboundClients(); + remoteClients = new AtomicReferenceArray<RemoteClient>(maximumOutboundClients); + remoteClientPermits = new PermitManager(maximumOutboundClients); + final int maximumInboundClients = configuration.getMaximumInboundClients(); + requestedClients = new AtomicReferenceArray<RequestHandler>(maximumInboundClients); + forwardedClientPermits = new PermitManager(maximumInboundClients); + sendWindowSize = configuration.getTransmitWindowSize(); + this.localConnectionHandler = localConnectionHandler; + } + + static EstablishedConnection getCurrent() { + return currentConnection.get(); + } + + void setCurrent() { + if (currentConnection.get() != null) { + throw new IllegalStateException("Reentrant setCurrent()"); + } + currentConnection.set(this); + } + + void clearCurrent() { + if (currentConnection.get() != this) { + throw new IllegalStateException("clearCurrent() from wrong context"); + } + currentConnection.set(null); + } + + // sequence methods + + protected Executor getExecutor() { + return executor; + } + + int getLinkMetric() { + return linkMetric; + } + + BufferAllocator<ByteBuffer> getAllocator() { + return allocator; + } + + AllocatedMessageChannel getChannel() { + return channel; + } + + Pool<Marshaller> getMarshallerPool() { + return marshallerPool; + } + + Pool<Unmarshaller> getUnmarshallerPool() { + return unmarshallerPool; + } + + ConnectionHandler getLocalConnectionHandler() { + return localConnectionHandler; + } + + private static final IoFuture.Notifier<RequestHandler, Result<RequestHandler>> RHS_RESULT_NOTIFIER = + new IoFuture.HandlingNotifier<RequestHandler, Result<RequestHandler>>() { + public void handleCancelled(final Result<RequestHandler> attachment) { + log.trace("Failed to open remote service (cancelled)"); + attachment.setCancelled(); + } + + public void handleFailed(final IOException exception, final Result<RequestHandler> attachment) { + log.trace("Failed to open remote service: %s", exception); + attachment.setException(exception); + } + + public void handleDone(final RequestHandler result, final Result<RequestHandler> attachment) { + log.trace("Opened %s", result); + attachment.setResult(result); + } + }; + + protected void closeAction() { + // just to make sure... + IoUtils.safeClose(channel); + final IndeterminateOutcomeException ioe = new IndeterminateOutcomeException("The connection was closed"); + // Things running remotely + for (int i = 0; i < remoteRequests.length(); i ++) { + SpiUtils.safeHandleException(remoteRequests.getAndSet(i, null), ioe); + } + for (RemoteClient x : clearing(remoteClients)) { + IoUtils.safeClose(x.getRequestHandler()); + } + // Things running locally + for (RemoteRequestContext localRequest : clearing(localRequests)) { + localRequest.cancel(); + } + } + + public String toString() { + return "multiplex connection <" + Integer.toHexString(hashCode()) + "> via " + channel; + } + + public Cancellable open(final String serviceName, final String groupName, final Result<RequestHandler> result) { + return null; + } + + public RequestHandlerConnector createConnector(final RequestHandler localHandler) { + return null; + } + + int getSendWindowSize() { + return sendWindowSize; + } + + private static <T> Iterable<T> clearing(final AtomicReferenceArray<T> array) { + return new Iterable<T>() { + + public Iterator<T> iterator() { + return new Iterator<T>() { + private int idx; + public boolean hasNext() { + return idx < array.length(); + } + + public T next() { + return array.getAndSet(idx++, null); + } + + public void remove() { + } + }; + } + }; + } +} \ No newline at end of file Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/InitialReadHandlerImpl.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/InitialReadHandlerImpl.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/InitialReadHandlerImpl.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,125 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.xnio.IoReadHandler; +import org.jboss.xnio.IoUtils; +import org.jboss.xnio.channels.AllocatedMessageChannel; +import org.jboss.remoting3.spi.Result; +import org.jboss.remoting3.spi.ConnectionHandlerFactory; +import org.jboss.remoting3.ProtocolException; +import java.nio.ByteBuffer; +import java.nio.BufferUnderflowException; +import java.io.IOException; + +/** + * Read handler for initial (negotiation) phase of connection. + */ +final class InitialReadHandlerImpl implements IoReadHandler<AllocatedMessageChannel> { + + private final Result<ConnectionHandlerFactory> result; + + private static final int GREETING = 0x484a524d; + private static final int MAX_VERSION = 0; + + private final ConnectionConfiguration connectionConfiguration; + + InitialReadHandlerImpl(final Result<ConnectionHandlerFactory> result, final ConnectionConfiguration connectionConfiguration) { + this.result = result; + this.connectionConfiguration = connectionConfiguration; + } + + public void handleReadable(final AllocatedMessageChannel channel) { + try { + final ByteBuffer buffer = channel.receive(); + if (buffer.getInt() != GREETING) { + throw new IOException("Incorrect greeting"); + } + final ConfigParam[] paramIds = ConfigParam.values(); + final ConnectionConfiguration conf = connectionConfiguration; + final int count = buffer.getShort() & 0xffff; + for (int i = 0; i < count; i ++) { + final int id = buffer.get() & 0xff; + if (id > paramIds.length) { + continue; + } + final ConfigParam configParam = paramIds[id]; + switch (configParam) { + case MAX_SUPPORTED_VERSION: { + // since we're version 0, the remote side must support us, and we support nothing else, so... + break; + } + case MAX_RECEIVE_SIZE: { + conf.setMaximumTransmitSize(Math.min(validate(ConfigParam.MAX_RECEIVE_SIZE, buffer.getInt(), 0x100, 0x100000), conf.getMaximumTransmitSize())); + break; + } + case MAX_TRANSMIT_SIZE: { + conf.setMaximumReceiveSize(Math.min(validate(ConfigParam.MAX_TRANSMIT_SIZE, buffer.getInt(), 0x100, 0x100000), conf.getMaximumReceiveSize())); + break; + } + case MAX_RECEIVE_WINDOW_SIZE: { + conf.setTransmitWindowSize(Math.min(validate(ConfigParam.MAX_RECEIVE_WINDOW_SIZE, buffer.getInt(), 0x2, 0x400), conf.getTransmitWindowSize())); + break; + } + case MAX_TRANSMIT_WINDOW_SIZE: { + conf.setReceiveWindowSize(Math.min(validate(ConfigParam.MAX_TRANSMIT_WINDOW_SIZE, buffer.getInt(), 0x2, 0x400), conf.getReceiveWindowSize())); + break; + } + case MAX_OUTBOUND_REQUESTS: { + conf.setMaximumInboundRequests(Math.min(validate(ConfigParam.MAX_OUTBOUND_REQUESTS, buffer.getInt(), 0, 0x100000), conf.getMaximumInboundRequests())); + break; + } + case MAX_INBOUND_REQUESTS: { + conf.setMaximumOutboundRequests(Math.min(validate(ConfigParam.MAX_INBOUND_REQUESTS, buffer.getInt(), 0, 0x100000), conf.getMaximumOutboundRequests())); + break; + } + case MAX_OUTBOUND_CLIENTS: { + conf.setMaximumInboundClients(Math.min(validate(ConfigParam.MAX_OUTBOUND_CLIENTS, buffer.getInt(), 0, 0x100000), conf.getMaximumInboundClients())); + break; + } + case MAX_INBOUND_CLIENTS: { + conf.setMaximumOutboundClients(Math.min(validate(ConfigParam.MAX_INBOUND_CLIENTS, buffer.getInt(), 0, 0x100000), conf.getMaximumOutboundClients())); + break; + } + default: { + // should not be possible + throw new IllegalStateException(); + } + } + } + } catch (IOException e) { + IoUtils.safeClose(channel); + result.setException(e); + } catch (BufferUnderflowException e) { + IoUtils.safeClose(channel); + result.setException(new ProtocolException("Truncated greeting packet")); + } + } + + private static int validate(Object field, int val, int min, int max) throws ProtocolException { + if (val >= min && val <= max) { + return val; + } + throw new ProtocolException("Value of " + field + " is out of range (expected " + min + " <= n <= " + max + ", got " + val + ")"); + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/Loggers.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/Loggers.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/Loggers.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,37 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.xnio.log.Logger; + +final class Loggers { + + private Loggers() { + } + + private static final String MAIN_LOGGER_NAME = "org.jboss.remoting.multiplex"; + private static final String REQUEST_HANDLER_LOGGER_NAME = MAIN_LOGGER_NAME + ".request-handler"; + + static final Logger REQUEST_HANDLER_LOGGER = Logger.getLogger(REQUEST_HANDLER_LOGGER_NAME); + static final Logger MAIN_LOGGER = Logger.getLogger(MAIN_LOGGER_NAME); +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MessageType.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MessageType.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MessageType.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,73 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +final class MessageType { + private MessageType() {} + + public static final int FIRST = 0x80; + public static final int LAST = 0x40; + + // Stream message data types + + public static final int DATA = 0x00; + public static final int CANCEL = 0x01; + public static final int FINAL = 0x02; + + /** + * Request - multi-packet + */ + public static final int REQUEST = 0x00; + public static final int REPLY = 0x01; + public static final int REQUEST_RECEIVE_FAILED = 0x02; + public static final int REQUEST_FAILED = 0x03; + + /** + * Request receiver aborts transmission. + */ + public static final int REMOTE_REQUEST_ABORT = 0x10; + public static final int REMOTE_REPLY_ABORT = 0x11; + public static final int REMOTE_REQUEST_RECEIVE_FAILED_ABORT = 0x12; + public static final int REMOTE_REQUEST_FAILED_ABORT = 0x13; + + /** + * Request transmitter aborts transmission. + */ + public static final int REQUEST_ABORT = 0x20; + public static final int REPLY_ABORT = 0x21; + public static final int REQUEST_RECEIVE_FAILED_ABORT = 0x22; + public static final int REQUEST_FAILED_ABORT = 0x23; + + public static final int REQUEST_CANCEL = 0x30; + public static final int REQUEST_CANCEL_ACK = 0x31; + public static final int CLIENT_OPEN = 0x32; + public static final int CLIENT_OPEN_CANCEL = 0x33; + public static final int CLIENT_OPEN_ACK = 0x34; + public static final int CLIENT_OPEN_CANCEL_ACK = 0x35; + public static final int CLIENT_NOT_FOUND = 0x36; + public static final int CLIENT_REMOTE_CLOSE = 0x37; + public static final int CLIENT_CLOSE = 0x38; + + + +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionHandler.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionHandler.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionHandler.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,105 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.charset.Charset; +import java.util.concurrent.atomic.AtomicBoolean; +import org.jboss.remoting3.spi.Cancellable; +import org.jboss.remoting3.spi.ConnectionHandler; +import org.jboss.remoting3.spi.RequestHandler; +import org.jboss.remoting3.spi.RequestHandlerConnector; +import org.jboss.remoting3.spi.Result; +import org.jboss.xnio.BufferAllocator; +import org.jboss.xnio.channels.AllocatedMessageChannel; +import org.jboss.xnio.channels.Channels; +import org.jboss.xnio.log.Logger; + +final class MultiplexConnectionHandler implements ConnectionHandler { + private static final Logger log = Logger.getLogger("org.jboss.remoting.multiplex"); + + private final EstablishedConnection establishedConnection; + private final Charset charset = Charset.forName("utf-8"); + + MultiplexConnectionHandler(final EstablishedConnection establishedConnection) { + this.establishedConnection = establishedConnection; + } + + public Cancellable open(final String serviceName, final String groupName, final Result<RequestHandler> result) { + final EstablishedConnection establishedConnection = this.establishedConnection; + final int id = establishedConnection.nextRemoteClient(); + final BufferAllocator<ByteBuffer> allocator = establishedConnection.getAllocator(); + final ByteBuffer buffer = allocator.allocate(); + final AllocatedMessageChannel channel = establishedConnection.getChannel(); + final RemoteClient remoteClient = new RemoteClient(result, new MultiplexRequestHandler(id, establishedConnection)); + establishedConnection.addOutstandingClient(id, remoteClient); + buffer.put((byte) MessageType.CLIENT_OPEN); + buffer.putInt(id); + final byte[] serviceNameBytes = serviceName.getBytes(charset); + buffer.putShort((short) serviceNameBytes.length); + buffer.put(serviceNameBytes); + final byte[] groupNameBytes = groupName.getBytes(charset); + buffer.putShort((short) groupNameBytes.length); + buffer.put(groupNameBytes); + buffer.flip(); + try { + Channels.sendBlocking(channel, buffer); + } catch (IOException e) { + result.setException(e); + establishedConnection.removeRemoteClient(id); + } + return new Cancellable() { + private final AtomicBoolean cancelled = new AtomicBoolean(); + + public void cancel() { + if (cancelled.getAndSet(true)) { + // cancel already sent + return; + } + if (remoteClient.getRequestHandler() != null) { + // already done; don't waste the bandwidth + return; + } + final ByteBuffer buffer = allocator.allocate(); + buffer.put((byte) MessageType.CLIENT_OPEN_CANCEL); + buffer.putInt(id); + buffer.flip(); + try { + Channels.sendBlocking(channel, buffer); + } catch (IOException e) { + log.trace("Sending a request to cancel a client open failed"); + } + } + }; + } + + public RequestHandlerConnector createConnector(final RequestHandler localHandler) { + final int id = establishedConnection.addLocalClient(localHandler); + return null; + } + + public void close() throws IOException { + establishedConnection.close(); + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionProvider.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionProvider.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexConnectionProvider.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,70 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.remoting3.spi.ConnectionProvider; +import org.jboss.remoting3.spi.Cancellable; +import org.jboss.remoting3.spi.ConnectionHandlerFactory; +import org.jboss.remoting3.spi.Result; +import org.jboss.remoting3.spi.SpiUtils; +import org.jboss.remoting3.OptionMap; +import org.jboss.xnio.TcpConnector; +import org.jboss.xnio.FutureConnection; +import org.jboss.xnio.IoFuture; +import org.jboss.xnio.channels.TcpChannel; +import java.net.URI; +import java.net.InetSocketAddress; +import java.io.IOException; + +public final class MultiplexConnectionProvider implements ConnectionProvider { + + private final TcpConnector tcpConnector; + + public MultiplexConnectionProvider(final TcpConnector tcpConnector) { + this.tcpConnector = tcpConnector; + } + + public Cancellable connect(final URI uri, final OptionMap connectOptions, final Result<ConnectionHandlerFactory> result) throws IllegalArgumentException { + final String host = uri.getHost(); + final int port = uri.getPort(); + if (port == -1) { + throw new IllegalArgumentException("A valid port number must be explicitly specified"); + } + // TODO - change this to use async DNS via XNIO DNS + final FutureConnection<InetSocketAddress,TcpChannel> connection = tcpConnector.connectTo(new InetSocketAddress(host, port), null); + connection.addNotifier(new IoFuture.HandlingNotifier<TcpChannel, Result<ConnectionHandlerFactory>>() { + public void handleFailed(final IOException exception, final Result<ConnectionHandlerFactory> attachment) { + attachment.setException(exception); + } + + public void handleDone(final TcpChannel result, final Result<ConnectionHandlerFactory> attachment) { + attachment.setResult(null); + } + + public void handleCancelled(final Result<ConnectionHandlerFactory> attachment) { + attachment.setCancelled(); + } + }, result); + return SpiUtils.cancellable(connection); + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexOptions.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexOptions.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexOptions.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,108 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.remoting3.Option; + +/** + * Options which may be used to configure a multiplex connection. + */ +public final class MultiplexOptions { + + private MultiplexOptions() { + } + + /** + * The maximum message receive size to specify to the remote side. This is the size of the largest protocol message + * that can be sent from the remote side to the local side. The remote side may elect to send messages of a smaller + * size, but it may not send larger messages (such messages will cause the connection to close with a protocol error). + * This setting does <b>not</b> affect the maximum request or reply size. This value should be set to at least {@code 256} + * if specified. + */ + public static final Option<Integer> MAX_RECEIVE_SIZE = Option.simple(MultiplexOptions.class, "MAX_RECEIVE_SIZE", Integer.class); + + /** + * The maximum message size that this side will send to a peer. If the peer specifies a smaller maximum receive size, + * that size will be used; otherwise this value will be. This value should be set to at least {@code 256} if specified. + * + * @see #MAX_RECEIVE_SIZE + */ + public static final Option<Integer> MAX_TRANSMIT_SIZE = Option.simple(MultiplexOptions.class, "MAX_TRANSMIT_SIZE", Integer.class); + + /** + * The maximum send window size that will be used by this end of the connection. The peer may specify a smaller size, + * in which case that value will be used. Increasing this size may decrease latency at the cost of increased memory demands. + * The minimum allowed value for this option is {@code 2}. + */ + public static final Option<Integer> MAX_SEND_WINDOW_SIZE = Option.simple(MultiplexOptions.class, "MAX_SEND_WINDOW_SIZE", Integer.class); + + /** + * The maximum receive window size that this end of the connection can support. The peer will not send unacknowledged messages + * beyond this window size. The minimum allowed value for this option is {@code 2}. + */ + public static final Option<Integer> MAX_RECEIVE_WINDOW_SIZE = Option.simple(MultiplexOptions.class, "MAX_RECEIVE_WINDOW_SIZE", Integer.class); + + /** + * The maximum number of concurrent inbound requests that this end of the connection will be configured to support. Using a larger number + * increases concurrency at the cost of additional memory demands. + */ + public static final Option<Integer> MAX_INBOUND_REQUESTS = Option.simple(MultiplexOptions.class, "MAX_INBOUND_REQUESTS", Integer.class); + + /** + * The maximum number of concurrent outbound requests that this end of the connection will be configured to support. Using a larger number + * increases concurrency at the cost of additional memory demands. + */ + public static final Option<Integer> MAX_OUTBOUND_REQUESTS = Option.simple(MultiplexOptions.class, "MAX_OUTBOUND_REQUESTS", Integer.class); + + /** + * The maximum number of concurrently active inbound clients that this end of the connection will be configured to accept. Using a larger number + * increases concurrency at the cost of additional memory demands. + */ + public static final Option<Integer> MAX_INBOUND_CLIENTS = Option.simple(MultiplexOptions.class, "MAX_INBOUND_CLIENTS", Integer.class); + + /** + * The maximum number of concurrently active outbound clients that this end of the connection will be configured to support. Using a larger number + * increases concurrency at the cost of additional memory demands. + */ + public static final Option<Integer> MAX_OUTBOUND_CLIENTS = Option.simple(MultiplexOptions.class, "MAX_OUTBOUND_CLIENTS", Integer.class); + + /** + * The maximum number of inbound streams. This is the number of streams that the remote side is allowed to initiate, regardless of + * the actual direction of flow of the stream itself. + */ + public static final Option<Integer> MAX_INBOUND_STREAMS = Option.simple(MultiplexOptions.class, "MAX_INBOUND_STREAMS", Integer.class); + + /** + * The maximum number of outbound streams. This is the number of streams that the local side is allowed to initiate, regardless of + * the actual direction of flow of the stream itself. + */ + public static final Option<Integer> MAX_OUTBOUND_STREAMS = Option.simple(MultiplexOptions.class, "MAX_OUTBOUND_STREAMS", Integer.class); + + /** + * The number of milliseconds to wait before sending accumulated ACK messages. Higher values increase bandwidth at the cost of latency. + * Setting this value to 0 will immediately send ACK messages. + */ + public static final Option<Integer> ACK_CORK_MILLISECONDS = Option.simple(MultiplexOptions.class, "ACK_CORK_MILLISECONDS", Integer.class); + + // todo - authentication/security mechanisms +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRemoteRequestContext.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRemoteRequestContext.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRemoteRequestContext.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,61 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.nio.ByteBuffer; +import java.util.concurrent.atomic.AtomicBoolean; +import org.jboss.remoting3.spi.RemoteRequestContext; +import org.jboss.xnio.channels.AllocatedMessageChannel; +import org.jboss.xnio.channels.Channels; +import org.jboss.xnio.log.Logger; + +final class MultiplexRemoteRequestContext implements RemoteRequestContext { + private static final Logger log = Loggers.MAIN_LOGGER; + + private final int id; + private final EstablishedConnection connection; + private final AtomicBoolean cancelled = new AtomicBoolean(); + + public MultiplexRemoteRequestContext(final int id, final EstablishedConnection connection) { + this.id = id; + this.connection = connection; + } + + public void cancel() { + if (cancelled.getAndSet(true)) { + return; + } + final AllocatedMessageChannel messageChannel = connection.getChannel(); + ByteBuffer buf = ByteBuffer.allocate(5); + buf.put((byte) MessageType.REQUEST_CANCEL); + buf.putInt(id); + buf.flip(); + try { + Channels.sendBlocking(messageChannel, buf); + log.trace("Sent cancel request for ID %d", Integer.valueOf(id)); + } catch (IOException e) { + log.trace("Failed to send a request cancel message: %s", e); + } + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandler.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandler.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandler.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,110 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.nio.ByteBuffer; +import org.jboss.marshalling.ByteOutput; +import org.jboss.marshalling.Marshaller; +import org.jboss.remoting3.spi.AbstractHandleableCloseable; +import org.jboss.remoting3.spi.RemoteRequestContext; +import org.jboss.remoting3.spi.ReplyHandler; +import org.jboss.remoting3.spi.RequestHandler; +import org.jboss.remoting3.spi.SpiUtils; +import org.jboss.xnio.BufferAllocator; +import org.jboss.xnio.IoUtils; +import org.jboss.xnio.channels.Channels; +import org.jboss.xnio.log.Logger; +import org.jboss.xnio.Pool; + +/** + * Handler for outbound requests. + */ +final class MultiplexRequestHandler extends AbstractHandleableCloseable<RequestHandler> implements RequestHandler { + private static final Logger log = Loggers.REQUEST_HANDLER_LOGGER; + + private final int identifier; + private final BufferAllocator<ByteBuffer> allocator; + private final Pool<Marshaller> marshallerPool; + private final EstablishedConnection connection; + + MultiplexRequestHandler(final int identifier, final EstablishedConnection connection) { + super(connection.getExecutor()); + this.connection = connection; + this.identifier = identifier; + allocator = connection.getAllocator(); + } + + @Override + protected void closeAction() throws IOException { + connection.removeRemoteClient(identifier); + ByteBuffer buffer = allocator.allocate(); + buffer.put((byte) MessageType.CLIENT_CLOSE); + buffer.putInt(identifier); + buffer.flip(); + Channels.sendBlocking(connection.getChannel(), buffer); + } + + public RemoteRequestContext receiveRequest(final Object request, final ReplyHandler handler) { + log.trace("Sending outbound request (request id = %d) (type is %s)", request == null ? "null" : request.getClass()); + final EstablishedConnection connection = this.connection; + connection.setCurrent(); + try { + final Marshaller marshaller = marshallerPool.allocate(); + final ByteOutput output = new SendingByteOutput(null, allocator, connection.getSendWindowSize()); + boolean ok = false; + try { + marshaller.start(output); + marshaller.write(MessageType.REQUEST); + marshaller.writeInt(identifier); + final int id = connection.nextRequest(); + connection.addRemoteRequest(id, handler); + marshaller.writeInt(id); + marshaller.writeObject(request); + ok = true; + marshaller.finish(); + marshallerPool.free(marshaller); + output.close(); + return new MultiplexRemoteRequestContext(id, connection); + } finally { + IoUtils.safeClose(output); + if (! ok) try { + marshaller.finish(); + marshallerPool.free(marshaller); + } catch (final Exception e) { + log.trace("Failed to free a marshaller back into the pool: %s", e); + } + } + } catch (final IOException t) { + log.trace(t, "receiveRequest failed with an exception"); + SpiUtils.safeHandleException(handler, t); + return SpiUtils.getBlankRemoteRequestContext(); + } finally { + connection.clearCurrent(); + } + } + + public String toString() { + return "forwarding request handler <" + Integer.toHexString(hashCode()) + "> (id = " + identifier + ") for " + connection; + } +} \ No newline at end of file Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandlerConnector.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandlerConnector.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/MultiplexRequestHandlerConnector.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,40 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.remoting3.spi.RequestHandlerConnector; +import org.jboss.remoting3.spi.Cancellable; +import org.jboss.remoting3.spi.RequestHandler; +import org.jboss.remoting3.spi.Result; + +final class MultiplexRequestHandlerConnector implements RequestHandlerConnector { + private final EstablishedConnection connection; + + MultiplexRequestHandlerConnector(final EstablishedConnection connection) { + this.connection = connection; + } + + public Cancellable createRequestHandler(final Result<RequestHandler> result) throws SecurityException { + throw new SecurityException("Not forwarded"); + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/PermitManager.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/PermitManager.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/PermitManager.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,123 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; + +public final class PermitManager { + + private final Object lock = new Object(); + private final int maxPermits; + private final int[] permitIds; + private int topOfStack; + + public PermitManager(final int maxPermits) { + synchronized (lock) { + this.maxPermits = maxPermits; + permitIds = new int[maxPermits]; + for (int i = 0; i < maxPermits; i ++) { + permitIds[i] = i; + } + } + } + + public Permit acquireInterruptibly() throws InterruptedException { + final int maxPermits = this.maxPermits; + synchronized (lock) { + int topOfStack; + while ((topOfStack = this.topOfStack) == maxPermits) { + lock.wait(); + } + final int[] permitIds = this.permitIds; + int id = permitIds[topOfStack]; + this.topOfStack = topOfStack + 1; + return new Permit(id); + } + } + + public Permit acquire() { + final int maxPermits = this.maxPermits; + synchronized (lock) { + boolean intr = Thread.interrupted(); + try { + int topOfStack; + while ((topOfStack = this.topOfStack) == maxPermits) try { + lock.wait(); + } catch (InterruptedException e) { + intr = true; + } + final int[] permitIds = this.permitIds; + int id = permitIds[topOfStack]; + this.topOfStack = topOfStack + 1; + return new Permit(id); + } finally { + if (intr) Thread.currentThread().interrupt(); + } + } + } + + private static final AtomicIntegerFieldUpdater<Permit> permitUpdater = + AtomicIntegerFieldUpdater.newUpdater(Permit.class, "id"); + + public final class Permit { + private volatile int id; + + private Permit(final int id) { + this.id = id; + } + + public int getId() { + final int id = this.id; + if (id == -1) { + throw new IllegalStateException("Permit already released"); + } + return id; + } + + public boolean released() { + return id == -1; + } + + public void release() { + doRelease(); + } + + private boolean doRelease() { + final int id; + if ((id = permitUpdater.getAndSet(this, -1)) != -1) { + synchronized (lock) { + permitIds[--topOfStack] = id; + } + return true; + } else { + return false; + } + } + + protected void finalize() { + if (doRelease()) { + // todo log leak + } + } + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReadHandlerImpl.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReadHandlerImpl.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReadHandlerImpl.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,69 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.nio.ByteBuffer; +import org.jboss.marshalling.MarshallerFactory; +import org.jboss.marshalling.MarshallingConfiguration; +import org.jboss.marshalling.Marshaller; +import org.jboss.marshalling.Unmarshaller; +import org.jboss.remoting3.spi.ConnectionHandler; +import org.jboss.xnio.IoReadHandler; +import org.jboss.xnio.IoUtils; +import org.jboss.xnio.Buffers; +import org.jboss.xnio.Pool; +import org.jboss.xnio.channels.ReadableAllocatedMessageChannel; +import org.jboss.xnio.log.Logger; + +final class ReadHandlerImpl implements IoReadHandler<ReadableAllocatedMessageChannel> { + private static final Logger log = Logger.getLogger("org.jboss.remoting.multiplex"); + + private final int maxReceiveSize; + private final int maxSendSize; + private final int receiveWindowSize; + private final int sendWindowSize; + private final Pool<Marshaller> marshallerPool; + private final Pool<Unmarshaller> unmarshallerPool; + private final ConnectionHandler connectionHandler; + + public void handleReadable(final ReadableAllocatedMessageChannel channel) { + final ByteBuffer buffer; + try { + buffer = channel.receive(); + } catch (IOException e) { + log.error("I/O error in protocol channel; closing channel (%s)", e); + IoUtils.safeClose(connectionHandler); + IoUtils.safeClose(channel); + return; + } + if (log.isTrace()) { + log.trace("Received raw message:\n%s", Buffers.createDumper(buffer, 8, 1)); + } + final int idByte = buffer.get() & 0xff; + final boolean isMulti = (idByte & 0x80) != 0; + final boolean isFirst = isMulti && (idByte & 0x40) != 0; + final boolean isLast = isMulti && (idByte & 0x20) != 0; + + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReceivingByteInput.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReceivingByteInput.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/ReceivingByteInput.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,193 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InterruptedIOException; +import java.nio.ByteBuffer; +import java.util.Queue; +import java.util.ArrayDeque; +import org.jboss.marshalling.ByteInput; +import org.jboss.xnio.Buffers; +import org.jboss.remoting3.ProtocolException; + +final class ReceivingByteInput extends InputStream implements ByteInput { + private final Queue<ByteBuffer> window; + private final Runnable ackTask; + private final Runnable closeTask; + + private IOException failure; + private boolean done; + + ReceivingByteInput(final Runnable ackTask, final int windowSize, final Runnable closeTask) { + this.ackTask = ackTask; + this.closeTask = closeTask; + window = new ArrayDeque<ByteBuffer>(windowSize); + } + + public int read() throws IOException { + final Queue<ByteBuffer> window = this.window; + synchronized (this) { + while (window.isEmpty()) { + if (done) { + return -1; + } + checkFailure(); + try { + wait(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new InterruptedIOException("Interrupted on read()"); + } + } + final ByteBuffer buf = window.peek(); + try { + return buf.get() & 0xff; + } finally { + if (buf.remaining() == 0) { + window.poll(); + ackTask.run(); + } + } + } + } + + public int read(final byte[] bytes, int offs, int len) throws IOException { + if (len == 0) { + return 0; + } + synchronized (this) { + while (window.isEmpty()) { + if (done) { + return -1; + } + checkFailure(); + try { + wait(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new InterruptedIOException("Interrupted on read()"); + } + } + final Queue<ByteBuffer> window = this.window; + int total = 0; + while (len > 0) { + final ByteBuffer buffer = window.peek(); + if (buffer == null) { + break; + } + final int bytecnt = Math.min(buffer.remaining(), len); + buffer.get(bytes, offs, bytecnt); + total += bytecnt; + len -= bytecnt; + if (buffer.remaining() == 0) { + window.poll(); + ackTask.run(); + } + } + return total; + } + } + + public int available() throws IOException { + synchronized (this) { + int total = 0; + for (ByteBuffer buffer : window) { + total += buffer.remaining(); + if (total < 0) { + return Integer.MAX_VALUE; + } + } + return total; + } + } + + public long skip(long qty) throws IOException { + final Queue<ByteBuffer> window = this.window; + synchronized (this) { + while (window.isEmpty()) { + if (done) { + return 0L; + } + checkFailure(); + try { + wait(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new InterruptedIOException("Interrupted on read()"); + } + } + long skipped = 0L; + while (qty > 0L) { + final ByteBuffer buffer = window.peek(); + if (buffer == null) { + break; + } + final int bytecnt = Math.min(buffer.remaining(), (int) Math.max((long)Integer.MAX_VALUE, qty)); + Buffers.skip(buffer, bytecnt); + skipped += bytecnt; + qty -= bytecnt; + if (buffer.remaining() == 0) { + window.poll(); + ackTask.run(); + } + } + return skipped; + } + } + + private void checkFailure() throws IOException { + final IOException failure = this.failure; + if (failure != null) { + failure.setStackTrace(new Throwable().getStackTrace()); + try { + throw failure; + } finally { + done = true; + this.failure = null; + } + } + } + + void push(ByteBuffer buffer) throws IOException { + synchronized (this) { + checkFailure(); + try { + window.add(buffer); + } catch (IllegalStateException e) { + throw new ProtocolException("Stream window overrun"); + } + } + } + + public void close() throws IOException { + synchronized (this) { + if (! done) { + window.clear(); + done = true; + closeTask.run(); + } + } + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/RemoteClient.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/RemoteClient.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/RemoteClient.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,49 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import org.jboss.remoting3.spi.Result; +import org.jboss.remoting3.spi.RequestHandler; +import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; + +final class RemoteClient { + + @SuppressWarnings({ "UnusedDeclaration" }) + private volatile Result<RequestHandler> result; + private final RequestHandler requestHandler; + private static final AtomicReferenceFieldUpdater<RemoteClient, Result> updater = AtomicReferenceFieldUpdater.newUpdater(RemoteClient.class, Result.class, "result"); + + RemoteClient(final Result<RequestHandler> result, final RequestHandler requestHandler) { + this.result = result; + this.requestHandler = requestHandler; + } + + @SuppressWarnings({ "unchecked" }) + Result<RequestHandler> takeResult() { + return updater.getAndSet(this, null); + } + + public RequestHandler getRequestHandler() { + return result == null ? requestHandler : null; + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/SendingByteOutput.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/SendingByteOutput.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/SendingByteOutput.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,165 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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.remoting3.multiplex; + +import java.io.IOException; +import java.io.OutputStream; +import java.nio.ByteBuffer; +import java.nio.channels.ClosedByInterruptException; +import org.jboss.marshalling.ByteOutput; +import org.jboss.xnio.BufferAllocator; +import org.jboss.xnio.channels.WritableMessageChannel; + +final class SendingByteOutput extends OutputStream implements ByteOutput { + private ByteBuffer buffer; + private final BufferAllocator<ByteBuffer> allocator; + private final WritableMessageChannel channel; + private int windowSize; + private boolean closed; + private IOException remoteException; + + public SendingByteOutput(final WritableMessageChannel channel, final BufferAllocator<ByteBuffer> allocator, final int windowSize) { + this.channel = channel; + this.allocator = allocator; + this.windowSize = windowSize; + } + + private static IOException closed() { + return new IOException("Stream is closed"); + } + + private void checkClosed() throws IOException { + if (closed) { + throw closed(); + } + if (remoteException != null) { + closed = true; + throw remoteException; + } + } + + public void write(final int b) throws IOException { + synchronized (this) { + checkClosed(); + final ByteBuffer buffer = this.buffer; + if (buffer == null) { + this.buffer = allocator.allocate(); + } else if (! buffer.hasRemaining()) { + send(); + this.buffer = allocator.allocate(); + } + buffer.put((byte) b); + } + } + + public void write(final byte[] b, int off, int len) throws IOException { + synchronized (this) { + checkClosed(); + while (len > 0) { + ByteBuffer buffer = this.buffer; + if (buffer == null) { + buffer = this.buffer = allocator.allocate(); + } else if (! buffer.hasRemaining()) { + send(); + buffer = this.buffer = allocator.allocate(); + } + final int cnt = Math.min(len, buffer.remaining()); + buffer.put(b, off, cnt); + len -= cnt; + off += cnt; + + } + } + } + + // call with lock held + private void send() throws IOException { + while (windowSize == 0) { + try { + wait(); + } catch (InterruptedException e) { + buffer = null; + closed = true; + Thread.currentThread().interrupt(); + throw new ClosedByInterruptException(); + } + checkClosed(); + } + final ByteBuffer buffer = this.buffer; + this.buffer = null; + buffer.flip(); + final WritableMessageChannel channel = this.channel; + try { + while (! (channel.send(buffer))) { + channel.awaitWritable(); + checkClosed(); + if (Thread.currentThread().isInterrupted()) { + closed = true; + throw new ClosedByInterruptException(); + } + } + } finally { + allocator.free(buffer); + } + windowSize--; + } + + void acknowledge() { + synchronized (this) { + windowSize++; + notify(); + } + } + + public void flush() throws IOException { + synchronized (this) { + final ByteBuffer buffer = this.buffer; + if (buffer != null && buffer.position() > 0) { + send(); + } + } + } + + public void close() throws IOException { + synchronized (this) { + if (closed) { + return; + } + final ByteBuffer buffer = this.buffer; + if (buffer != null && buffer.position() > 0) { + send(); + } + closed = true; + } + } + + void abort() { + synchronized (this) { + if (closed) { + return; + } + closed = true; + notifyAll(); + } + } +} Added: remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/package-info.java =================================================================== --- remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/package-info.java (rev 0) +++ remoting3-multiplex/trunk/src/main/java/org/jboss/remoting3/multiplex/package-info.java 2009-09-16 17:44:19 UTC (rev 5501) @@ -0,0 +1,26 @@ +/* + * JBoss, Home of Professional Open Source + * Copyright 2009, JBoss 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. + */ + +/** + * The Remoting 3 multiplex protocol implementation. + */ +package org.jboss.remoting3.multiplex; \ No newline at end of file