/*
* JBoss, Home of Professional Open Source
* Copyright 2005-2008, Red Hat Middleware LLC, and individual contributors
* 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.netty.channel.local;
import static org.jboss.netty.channel.Channels.*;
import org.jboss.netty.channel.AbstractChannelSink;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelException;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelState;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.MessageEvent;
/**
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Andy Taylor (andy.taylor@jboss.org)
* @author Trustin Lee (tlee@redhat.com)
* @version $Rev: 1023 $, $Date: 2009-03-12 17:30:23 +0900 (Thu, 12 Mar 2009) $
*/
final class LocalServerChannelSink extends AbstractChannelSink {
LocalServerChannelSink() {
super();
}
public void eventSunk(ChannelPipeline pipeline, ChannelEvent e) throws Exception {
Channel channel = e.getChannel();
if (channel instanceof DefaultLocalServerChannel) {
handleServerChannel(e);
}
else if (channel instanceof DefaultLocalChannel) {
handleAcceptedChannel(e);
}
}
private void handleServerChannel(ChannelEvent e) {
if (!(e instanceof ChannelStateEvent)) {
return;
}
ChannelStateEvent event = (ChannelStateEvent) e;
DefaultLocalServerChannel channel =
(DefaultLocalServerChannel) event.getChannel();
ChannelFuture future = event.getFuture();
ChannelState state = event.getState();
Object value = event.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (LocalAddress) value);
} else {
close(channel, future);
}
break;
}
}
private void handleAcceptedChannel(ChannelEvent e) {
if (e instanceof ChannelStateEvent) {
ChannelStateEvent event = (ChannelStateEvent) e;
DefaultLocalChannel channel = (DefaultLocalChannel) event.getChannel();
ChannelFuture future = event.getFuture();
ChannelState state = event.getState();
Object value = event.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
channel.closeNow(future);
}
break;
case BOUND:
case CONNECTED:
if (value == null) {
channel.closeNow(future);
}
break;
case INTEREST_OPS:
// Unsupported - discard silently.
future.setSuccess();
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent event = (MessageEvent) e;
DefaultLocalChannel channel = (DefaultLocalChannel) event.getChannel();
boolean offered = channel.writeBuffer.offer(event);
assert offered;
channel.flushWriteBuffer();
}
}
private void bind(DefaultLocalServerChannel channel, ChannelFuture future, LocalAddress localAddress) {
try {
if (!LocalChannelRegistry.register(localAddress, channel)) {
throw new ChannelException("address already in use: " + localAddress);
}
if (!channel.bound.compareAndSet(false, true)) {
throw new ChannelException("already bound");
}
channel.localAddress = localAddress;
future.setSuccess();
fireChannelBound(channel, localAddress);
} catch (Throwable t) {
LocalChannelRegistry.unregister(localAddress);
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private void close(DefaultLocalServerChannel channel, ChannelFuture future) {
future.setSuccess();
if (channel.setClosed()) {
LocalAddress localAddress = channel.localAddress;
if (channel.bound.compareAndSet(true, false)) {
channel.localAddress = null;
LocalChannelRegistry.unregister(localAddress);
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
}
}
}