/*--------------------------------------------------------------------------
* Copyright 2011 Taro L. Saito
*
* 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.
*--------------------------------------------------------------------------*/
//--------------------------------------
// XerialJ
//
// Master.java
// Since: 2011/02/03 17:25:21
//
// $URL$
// $Author$
//--------------------------------------
package org.xerial.silk.weaver.cui;
import java.net.InetSocketAddress;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicLong;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.ChannelState;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.jboss.netty.handler.codec.serialization.ObjectDecoder;
import org.jboss.netty.handler.codec.serialization.ObjectEncoder;
import org.xerial.util.log.Logger;
import org.xerial.util.opt.Command;
import org.xerial.util.opt.Option;
/**
* Launch a master server
*
* @author leo
*
*/
public class Master implements Command
{
private static Logger _logger = Logger.getLogger(Master.class);
// program options
@Option(symbol = "p", description = "port number. default = 8080")
int port = 8080;
@Override
public String name() {
return "master";
}
@Override
public String getOneLineDescription() {
return "launch a master server";
}
@Override
public Object getOptionHolder() {
return this;
}
@Override
public void execute(String[] args) throws Exception {
ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));
bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
public ChannelPipeline getPipeline() throws Exception {
return Channels.pipeline(new ObjectEncoder(), new ObjectDecoder(), new ObjectServerHandler());
}
});
Channel bind = bootstrap.bind(new InetSocketAddress(port));
bind.getCloseFuture().awaitUninterruptibly();
}
public class ObjectServerHandler extends SimpleChannelUpstreamHandler
{
private final AtomicLong transferredMessages = new AtomicLong();
@Override
public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e) throws Exception {
if (e instanceof ChannelStateEvent && ((ChannelStateEvent) e).getState() != ChannelState.INTEREST_OPS) {
_logger.info(e.toString());
}
super.handleUpstream(ctx, e);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
transferredMessages.incrementAndGet();
Object m = e.getMessage();
_logger.info("recieved a message: " + m);
e.getChannel().write("Nice to meet you!");
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
_logger.warn(e.getCause());
e.getChannel().close();
}
}
}