package com.telpo.dipperposition.server;

import com.telpo.dipperposition.handler.ServerChannelInitializer;
import io.netty.bootstrap.ServerBootstrap;
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 lombok.extern.slf4j.Slf4j;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.stereotype.Component;

import java.net.InetSocketAddress;

/**
 * @program: DipperPositionServer
 * @description: 北斗定位
 * @author: king
 * @create: 2021-01-13 14:01
 */
@Slf4j
@Component
public class DipperPositionServer {

    private String serverAddr;
    private Integer starsAsycPort;

    public DipperPositionServer(ConfigurableEnvironment environment) {

        this.serverAddr = environment.getProperty("position-server.serverAddr");

        this.starsAsycPort = Integer.parseInt(environment.getProperty("position-server.starsAsycPort"));
    }

    /*
     * 星历同步进程线程
     */
    public void start() {

        //new 一个主线程组
        EventLoopGroup mainThreadGroup = new NioEventLoopGroup(1);
        //new 一个工作线程组
        EventLoopGroup workThreadGroup = new NioEventLoopGroup(200);
        InetSocketAddress socketAddress = new InetSocketAddress(serverAddr,starsAsycPort);
        ServerBootstrap bootstrap = new ServerBootstrap()
                .group(mainThreadGroup, workThreadGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ServerChannelInitializer())
                .localAddress(socketAddress)
                //设置队列大小, 多少合适？？？？
                .option(ChannelOption.SO_BACKLOG, 1024)
                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 3000)
                // 两小时内没有数据的通信时,TCP会自动发送一个活动探测数据报文
                .childOption(ChannelOption.SO_KEEPALIVE, true);


        //绑定端口,开始接收进来的连接
        try {

            ChannelFuture channelFuture = bootstrap.bind(socketAddress).sync();
            log.info("星历服务器启动开始监听端口: {}", starsAsycPort);
            //log.info("服务器: {}", myServerAddr);
            channelFuture.addListener(future -> {
                if (future.isSuccess()){
                    log.info("start success");
                }else{
                    log.info("start failed");
                }
            });
            channelFuture.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            //关闭主线程组
            mainThreadGroup.shutdownGracefully();
            //关闭工作线程组
            workThreadGroup.shutdownGracefully();
        }
    }

}