com.caocao.nio.server.NettyServer.java Source code

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Here is the source code for com.caocao.nio.server.NettyServer.java

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 com.caocao.nio.server;

import javax.annotation.PreDestroy;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.channel.AdaptiveRecvByteBufAllocator;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * nio?
 */
@Component("nettyServer")
public class NettyServer {
    private static final Logger logger = LoggerFactory.getLogger(CustomerInboundHandler.class);

    @Value("${nio.port}")
    private int port;
    private EventLoopGroup bossGroup, workerGroup;

    // @PostConstruct
    public void initAndStart() {
        System.out.println("port:" + port);
        // Configure the server.
        bossGroup = new NioEventLoopGroup(Runtime.getRuntime().availableProcessors() * 2);
        workerGroup = new NioEventLoopGroup(Runtime.getRuntime().availableProcessors() * 2);
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128).option(ChannelOption.SO_KEEPALIVE, true)
                    .option(ChannelOption.TCP_NODELAY, true).option(ChannelOption.SO_SNDBUF, 5 * 1024)
                    .option(ChannelOption.SO_SNDBUF, 5 * 1024)
                    .option(ChannelOption.RCVBUF_ALLOCATOR, new AdaptiveRecvByteBufAllocator(40, 64, 1024))
                    .option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
                    .handler(new LoggingHandler(LogLevel.INFO)).childHandler(new CustomerInitializer());

            // Start the server.
            ChannelFuture f = b.bind(port).sync();

            // Wait until the server socket is closed.
            f.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            logger.error("netty??", e);
        } finally {
            // Shut down all event loops to terminate all threads.
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    @PreDestroy
    public void destory() {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}