com.cdg.study.netty.util.NettyStartupUtil.java Source code

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Here is the source code for com.cdg.study.netty.util.NettyStartupUtil.java

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/*
 * @(#)NettyStartupUtil.java $version 2015. 8. 19.
 *
 * Copyright 2015 NHN Ent. All rights Reserved. 
 * NHN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.cdg.study.netty.util;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;

import java.util.function.Consumer;

/**
 * @author Kanghoon Choi
 */
public class NettyStartupUtil {
    public static void runServer(int port, ChannelHandler childHandler, Consumer<ServerBootstrap> block)
            throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class);
            b.handler(new LoggingHandler(LogLevel.INFO));
            b.childHandler(childHandler);
            block.accept(b);
            Channel ch = b.bind(port).sync().channel();
            System.err.println("Ready for 0.0.0.0:" + port);
            ch.closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void runServer(int port, ChannelHandler childHandler) throws Exception {
        runServer(port, childHandler, b -> {
        });
    }
}