/*
* Copyright 2009 Red Hat, Inc.
*
* Red Hat licenses this file to you under the Apache License, version 2.0
* (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package org.jboss.netty.channel.socket.oio;
import static org.jboss.netty.channel.Channels.*;
import java.io.IOException;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.SocketTimeoutException;
import java.util.concurrent.Executor;
import org.jboss.netty.channel.AbstractChannelSink;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelEvent;
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;
import org.jboss.netty.logging.InternalLogger;
import org.jboss.netty.logging.InternalLoggerFactory;
import org.jboss.netty.util.ThreadRenamingRunnable;
import org.jboss.netty.util.internal.IoWorkerRunnable;
/**
*
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (tlee@redhat.com)
*
* @version $Rev: 1685 $, $Date: 2009-08-28 16:15:49 +0900 (금, 28 8 2009) $
*
*/
class OioServerSocketPipelineSink extends AbstractChannelSink {
static final InternalLogger logger =
InternalLoggerFactory.getInstance(OioServerSocketPipelineSink.class);
final Executor workerExecutor;
OioServerSocketPipelineSink(Executor workerExecutor) {
this.workerExecutor = workerExecutor;
}
public void eventSunk(
ChannelPipeline pipeline, ChannelEvent e) throws Exception {
Channel channel = e.getChannel();
if (channel instanceof OioServerSocketChannel) {
handleServerSocket(e);
} else if (channel instanceof OioAcceptedSocketChannel) {
handleAcceptedSocket(e);
}
}
private void handleServerSocket(ChannelEvent e) {
if (!(e instanceof ChannelStateEvent)) {
return;
}
ChannelStateEvent event = (ChannelStateEvent) e;
OioServerSocketChannel channel =
(OioServerSocketChannel) 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, (SocketAddress) value);
} else {
close(channel, future);
}
break;
}
}
private void handleAcceptedSocket(ChannelEvent e) {
if (e instanceof ChannelStateEvent) {
ChannelStateEvent event = (ChannelStateEvent) e;
OioAcceptedSocketChannel channel =
(OioAcceptedSocketChannel) event.getChannel();
ChannelFuture future = event.getFuture();
ChannelState state = event.getState();
Object value = event.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
OioWorker.close(channel, future);
}
break;
case BOUND:
case CONNECTED:
if (value == null) {
OioWorker.close(channel, future);
}
break;
case INTEREST_OPS:
OioWorker.setInterestOps(channel, future, ((Integer) value).intValue());
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent event = (MessageEvent) e;
OioSocketChannel channel = (OioSocketChannel) event.getChannel();
ChannelFuture future = event.getFuture();
Object message = event.getMessage();
OioWorker.write(channel, future, message);
}
}
private void bind(
OioServerSocketChannel channel, ChannelFuture future,
SocketAddress localAddress) {
boolean bound = false;
boolean bossStarted = false;
try {
channel.socket.bind(localAddress, channel.getConfig().getBacklog());
bound = true;
future.setSuccess();
localAddress = channel.getLocalAddress();
fireChannelBound(channel, localAddress);
Executor bossExecutor =
((OioServerSocketChannelFactory) channel.getFactory()).bossExecutor;
bossExecutor.execute(
new IoWorkerRunnable(
new ThreadRenamingRunnable(
new Boss(channel),
"Old I/O server boss (channelId: " +
channel.getId() + ", " + localAddress + ')')));
bossStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (!bossStarted && bound) {
close(channel, future);
}
}
}
private void close(OioServerSocketChannel channel, ChannelFuture future) {
boolean bound = channel.isBound();
try {
channel.socket.close();
if (channel.setClosed()) {
future.setSuccess();
if (bound) {
fireChannelUnbound(channel);
}
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
private final class Boss implements Runnable {
private final OioServerSocketChannel channel;
Boss(OioServerSocketChannel channel) {
this.channel = channel;
}
public void run() {
while (channel.isBound()) {
try {
Socket acceptedSocket = channel.socket.accept();
try {
ChannelPipeline pipeline =
channel.getConfig().getPipelineFactory().getPipeline();
final OioAcceptedSocketChannel acceptedChannel =
new OioAcceptedSocketChannel(
channel,
channel.getFactory(),
pipeline,
OioServerSocketPipelineSink.this,
acceptedSocket);
workerExecutor.execute(
new IoWorkerRunnable(
new ThreadRenamingRunnable(
new OioWorker(acceptedChannel),
"Old I/O server worker (parentId: " +
channel.getId() + ", channelId: " +
acceptedChannel.getId() + ", " +
channel.getRemoteAddress() + " => " +
channel.getLocalAddress() + ')')));
} catch (Exception e) {
logger.warn(
"Failed to initialize an accepted socket.", e);
try {
acceptedSocket.close();
} catch (IOException e2) {
logger.warn(
"Failed to close a partially accepted socket.",
e2);
}
}
} catch (SocketTimeoutException e) {
// Thrown every second to stop when requested.
} catch (IOException e) {
// Do not log the exception if the server socket was closed
// by a user.
if (!channel.socket.isBound() || channel.socket.isClosed()) {
break;
}
logger.warn(
"Failed to accept a connection.", e);
try {
Thread.sleep(1000);
} catch (InterruptedException e1) {
// Ignore
}
}
}
}
}
}