org.rzo.netty.mcast.bridge.MulticastAdapter.java Source code

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Here is the source code for org.rzo.netty.mcast.bridge.MulticastAdapter.java

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/*******************************************************************************
 * Copyright  2015 rzorzorzo@users.sf.net
 *
 * 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 org.rzo.netty.mcast.bridge;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.oio.OioEventLoopGroup;
import io.netty.channel.socket.oio.OioDatagramChannel;

import java.net.ConnectException;
import java.net.InetSocketAddress;
import java.util.Timer;
import java.util.TimerTask;

import org.rzo.netty.ahessian.bootstrap.ChannelPipelineFactory;
import org.rzo.netty.mcast.MulticastEndpoint;

public class MulticastAdapter {
    private static Channel channel;
    private static MulticastEndpoint mcast = new MulticastEndpoint();
    private static long RECONNECT_DELAY = 5000;
    private static Timer timer = new Timer();
    private static Bootstrap bootstrap;

    public static void main(String[] args) throws Exception {
        String host = args[0];
        int port = Integer.parseInt(args[1]);

        bootstrap = new Bootstrap();
        EventLoopGroup group = new OioEventLoopGroup();
        bootstrap.group(group);
        bootstrap.channel(OioDatagramChannel.class);

        bootstrap.remoteAddress(new InetSocketAddress(host, port));

        bootstrap.handler(new ChannelPipelineFactory() {
            public HandlerList getPipeline() {
                return ChannelPipelineFactory.handlerList(new ChannelInboundHandlerAdapter() {
                    @Override
                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                        if (mcast != null && mcast.isInit())
                            mcast.send((ByteBuf) msg);
                    }

                    @Override
                    public void channelActive(ChannelHandlerContext ctx) {
                        timer.schedule(new TimerTask() {
                            public void run() {
                                bootstrap.connect();
                            }
                        }, RECONNECT_DELAY);
                    }

                    @Override
                    public void exceptionCaught(ChannelHandlerContext ctx, Throwable e) {
                        Throwable cause = e.getCause();
                        if (cause instanceof ConnectException) {
                            System.out.println("conection lost: reconnecting...");
                        }
                        ctx.channel().close();
                    }

                });
            }
        });

        ChannelFuture f = bootstrap.connect();
        channel = f.sync().channel();

        mcast.init(new ChannelPipelineFactory() {
            public HandlerList getPipeline() {
                return ChannelPipelineFactory.handlerList(new ChannelInboundHandlerAdapter() {
                    @Override
                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                        ByteBuf b = mcast.getMessage((ByteBuf) msg);
                        if (b == null)
                            return;
                        if (channel != null && channel.isActive())
                            channel.write(b);
                    }

                });
            }
        });

    }

}