LocalExecServer.java

/**
   This file is part of Waarp Project.

   Copyright 2009, Frederic Bregier, and individual contributors by the @author
   tags. See the COPYRIGHT.txt in the distribution for a full listing of
   individual contributors.

   All Waarp Project is free software: you can redistribute it and/or 
   modify it under the terms of the GNU General Public License as published 
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   Waarp 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Waarp .  If not, see <http://www.gnu.org/licenses/>.
 */
package org.waarp.commandexec.server;

import java.net.InetAddress;
import java.net.InetSocketAddress;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.util.concurrent.DefaultEventExecutorGroup;
import io.netty.util.concurrent.EventExecutorGroup;

import org.waarp.commandexec.utils.LocalExecDefaultResult;
import org.waarp.common.logging.WaarpLoggerFactory;
import org.waarp.common.logging.WaarpSlf4JLoggerFactory;
import org.waarp.common.utility.DetectionUtils;
import org.waarp.common.utility.WaarpNettyUtil;
import org.waarp.common.utility.WaarpThreadFactory;

/**
 * LocalExec server Main method.
 *
 *
 */
public class LocalExecServer {

    static EventLoopGroup bossGroup = new NioEventLoopGroup();
    static EventLoopGroup workerGroup = new NioEventLoopGroup();
    static EventExecutorGroup executor = new DefaultEventExecutorGroup(DetectionUtils.numberThreads(),
            new WaarpThreadFactory("LocalExecServer"));

    /**
     * Takes 3 optional arguments:<br>
     * - no argument: implies 127.0.0.1 + 9999 port<br>
     * - arguments:<br>
     * "addresse" "port"<br>
     * "addresse" "port" "default delay"<br>
     * 
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        WaarpLoggerFactory.setDefaultFactory(new WaarpSlf4JLoggerFactory(null));
        int port = 9999;
        InetAddress addr;
        long delay = LocalExecDefaultResult.MAXWAITPROCESS;
        if (args.length >= 2) {
            addr = InetAddress.getByName(args[0]);
            port = Integer.parseInt(args[1]);
            if (args.length > 2) {
                delay = Long.parseLong(args[2]);
            }
        } else {
            byte[] loop = { 127, 0, 0, 1 };
            addr = InetAddress.getByAddress(loop);
        }
        // Configure the server.
        try {
            ServerBootstrap bootstrap = new ServerBootstrap();
            WaarpNettyUtil.setServerBootstrap(bootstrap, bossGroup, workerGroup, 30000);

            // Configure the pipeline factory.
            bootstrap.childHandler(new LocalExecServerInitializer(delay, executor));

            // Bind and start to accept incoming connections only on local address.
            ChannelFuture future = bootstrap.bind(new InetSocketAddress(addr, port));

            // Wait until the server socket is closed.
            future.channel().closeFuture().sync();
        } finally {
            // Shut down all event loops to terminate all threads.
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();

            // Wait until all threads are terminated.
            bossGroup.terminationFuture().sync();
            workerGroup.terminationFuture().sync();
        }
    }
}