io.undertow.server.AbstractServerConnection Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
The newest version!
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 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 io.undertow.server;
import io.undertow.UndertowLogger;
import io.undertow.UndertowMessages;
import org.xnio.ChannelListener;
import org.xnio.ChannelListeners;
import org.xnio.Option;
import org.xnio.OptionMap;
import io.undertow.connector.ByteBufferPool;
import io.undertow.connector.PooledByteBuffer;
import org.xnio.Pool;
import org.xnio.StreamConnection;
import org.xnio.XnioIoThread;
import org.xnio.XnioWorker;
import org.xnio.conduits.ConduitStreamSinkChannel;
import org.xnio.conduits.ConduitStreamSourceChannel;
import org.xnio.conduits.StreamSinkConduit;
import org.xnio.conduits.StreamSourceConduit;
import java.io.IOException;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.util.LinkedList;
import java.util.List;
public abstract class AbstractServerConnection extends ServerConnection {
protected final StreamConnection channel;
protected final CloseSetter closeSetter;
protected final ByteBufferPool bufferPool;
protected final HttpHandler rootHandler;
protected final OptionMap undertowOptions;
protected final StreamSourceConduit originalSourceConduit;
protected final StreamSinkConduit originalSinkConduit;
protected final List closeListeners = new LinkedList<>();
protected HttpServerExchange current;
private final int bufferSize;
private XnioBufferPoolAdaptor poolAdaptor;
/**
* Any extra bytes that were read from the channel. This could be data for this requests, or the next response.
*/
protected PooledByteBuffer extraBytes;
public AbstractServerConnection(StreamConnection channel, final ByteBufferPool bufferPool, final HttpHandler rootHandler, final OptionMap undertowOptions, final int bufferSize) {
this.channel = channel;
this.bufferPool = bufferPool;
this.rootHandler = rootHandler;
this.undertowOptions = undertowOptions;
this.bufferSize = bufferSize;
closeSetter = new CloseSetter();
if (channel != null) {
this.originalSinkConduit = channel.getSinkChannel().getConduit();
this.originalSourceConduit = channel.getSourceChannel().getConduit();
channel.setCloseListener(closeSetter);
} else {
this.originalSinkConduit = null;
this.originalSourceConduit = null;
}
}
@Override
public Pool getBufferPool() {
if(poolAdaptor == null) {
poolAdaptor = new XnioBufferPoolAdaptor(getByteBufferPool());
}
return poolAdaptor;
}
/**
* Get the root HTTP handler for this connection.
*
* @return the root HTTP handler for this connection
*/
public HttpHandler getRootHandler() {
return rootHandler;
}
/**
* Get the buffer pool for this connection.
*
* @return the buffer pool for this connection
*/
@Override
public ByteBufferPool getByteBufferPool() {
return bufferPool;
}
/**
* Get the underlying channel.
*
* @return the underlying channel
*/
public StreamConnection getChannel() {
return channel;
}
@Override
public ChannelListener.Setter getCloseSetter() {
return closeSetter;
}
@Override
public XnioWorker getWorker() {
return channel.getWorker();
}
@Override
public XnioIoThread getIoThread() {
if(channel == null) {
return null;
}
return channel.getIoThread();
}
@Override
public boolean isOpen() {
return channel.isOpen();
}
@Override
public boolean supportsOption(final Option option) {
return channel.supportsOption(option);
}
@Override
public T getOption(final Option option) throws IOException {
return channel.getOption(option);
}
@Override
public T setOption(final Option option, final T value) throws IllegalArgumentException, IOException {
return channel.setOption(option, value);
}
@Override
public void close() throws IOException {
channel.close();
}
@Override
public SocketAddress getPeerAddress() {
return channel.getPeerAddress();
}
@Override
public A getPeerAddress(final Class type) {
return channel.getPeerAddress(type);
}
@Override
public SocketAddress getLocalAddress() {
return channel.getLocalAddress();
}
@Override
public A getLocalAddress(final Class type) {
return channel.getLocalAddress(type);
}
@Override
public OptionMap getUndertowOptions() {
return undertowOptions;
}
/**
* @return The size of the buffers allocated by the buffer pool
*/
@Override
public int getBufferSize() {
return bufferSize;
}
public PooledByteBuffer getExtraBytes() {
if(extraBytes != null && !extraBytes.getBuffer().hasRemaining()) {
extraBytes.close();
extraBytes = null;
return null;
}
return extraBytes;
}
public void setExtraBytes(final PooledByteBuffer extraBytes) {
this.extraBytes = extraBytes;
}
/**
* @return The original source conduit
*/
public StreamSourceConduit getOriginalSourceConduit() {
return originalSourceConduit;
}
/**
* @return The original underlying sink conduit
*/
public StreamSinkConduit getOriginalSinkConduit() {
return originalSinkConduit;
}
/**
* Resets the channel to its original state, effectively disabling all current conduit
* wrappers. The current state is encapsulated inside a {@link ConduitState} object that
* can be used the restore the channel.
*
* @return An opaque representation of the previous channel state
*/
public ConduitState resetChannel() {
ConduitState ret = new ConduitState(channel.getSinkChannel().getConduit(), channel.getSourceChannel().getConduit());
channel.getSinkChannel().setConduit(originalSinkConduit);
channel.getSourceChannel().setConduit(originalSourceConduit);
return ret;
}
/**
* Resets the channel to its original state, effectively disabling all current conduit
* wrappers. The current state is lost.
*/
public void clearChannel() {
channel.getSinkChannel().setConduit(originalSinkConduit);
channel.getSourceChannel().setConduit(originalSourceConduit);
}
/**
* Restores the channel conduits to a previous state.
*
* @param state The original state
* @see #resetChannel()
*/
public void restoreChannel(final ConduitState state) {
channel.getSinkChannel().setConduit(state.sink);
channel.getSourceChannel().setConduit(state.source);
}
public static class ConduitState {
final StreamSinkConduit sink;
final StreamSourceConduit source;
private ConduitState(final StreamSinkConduit sink, final StreamSourceConduit source) {
this.sink = sink;
this.source = source;
}
}
protected static StreamSinkConduit sink(ConduitState state) {
return state.sink;
}
protected static StreamSourceConduit source(ConduitState state) {
return state.source;
}
@Override
public void addCloseListener(CloseListener listener) {
this.closeListeners.add(listener);
}
@Override
protected ConduitStreamSinkChannel getSinkChannel() {
return channel.getSinkChannel();
}
@Override
protected ConduitStreamSourceChannel getSourceChannel() {
return channel.getSourceChannel();
}
protected void setUpgradeListener(HttpUpgradeListener upgradeListener) {
throw UndertowMessages.MESSAGES.upgradeNotSupported();
}
@Override
protected void maxEntitySizeUpdated(HttpServerExchange exchange) {
}
private class CloseSetter implements ChannelListener.Setter, ChannelListener {
private ChannelListener listener;
@Override
public void set(ChannelListener listener) {
this.listener = listener;
}
@Override
public void handleEvent(StreamConnection channel) {
try {
for (CloseListener l : closeListeners) {
try {
l.closed(AbstractServerConnection.this);
} catch (Throwable e) {
UndertowLogger.REQUEST_LOGGER.exceptionInvokingCloseListener(l, e);
}
}
if (current != null) {
current.endExchange();
}
ChannelListeners.invokeChannelListener(AbstractServerConnection.this, listener);
} finally {
if(extraBytes != null) {
extraBytes.close();
extraBytes = null;
}
}
}
}
}