gather-server/src/main/java/com/gzlh/device/led/client/LedNettyConfig.java

package com.gzlh.device.led.client;

import com.gzlh.bus.EventConfig;
import com.gzlh.config.dto.SerialSetting;
import com.gzlh.config.netty.NettyDecoder;
import com.gzlh.utils.XorUtils;
import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.annotation.Resource;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;

@Configuration
@Slf4j
public class LedNettyConfig {



    @Autowired
    private LedClientHandler ledClientHandler;

    private Channel channel;

    @Bean("ledBootstrap")
    public Bootstrap bootstrap() {
        SerialSetting serialSetting= EventConfig.serialSetting;
        String host = serialSetting.getHost();
        int port = serialSetting.getLed().getPort();
        if (serialSetting.getLed().getEnable()) {
            log.info("初始化 led:{},{}", host, port);
        }
        EventLoopGroup group = new NioEventLoopGroup();
        return new Bootstrap()
                .group(group)
                .channel(NioSocketChannel.class)
                .remoteAddress(host, port)
                .option(ChannelOption.SO_KEEPALIVE, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) {
                        try {
                            ChannelPipeline pipeline = ch.pipeline();
                            pipeline.addLast( new NettyDecoder());
                            pipeline.addLast( new StringEncoder(StandardCharsets.UTF_8));
                            pipeline.addLast("handler", ledClientHandler);
                        } catch (Exception e) {
                            log.info("error connect:{}", e.getMessage());
                        }
                    }
                });
    }

    @Bean("ledClientHandler")
    public LedClientHandler ledClientHandler() {
        return new LedClientHandler(this);
    }

    public void connect() {
        SerialSetting serialSetting= EventConfig.serialSetting;
        String host = serialSetting.getHost();
        int port = serialSetting.getLed().getPort();
        ChannelFuture future = bootstrap().connect();
        future.addListener((ChannelFutureListener) future1 -> {
            if (future1.isSuccess()) {
                channel = future1.channel();
                log.info("led 串口服务器连接成功,{},{}", host, port);
            } else {
                log.error("-------------led 连接服务器失败,{},{}-----------，进行重连", host, port);
                future1.channel().eventLoop().schedule(this::connect, 5, TimeUnit.SECONDS);
            }
        });
        try {
            future.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public void send(String message) {
        if (channel != null && channel.isActive()) {
            ByteBuf bufff = Unpooled.buffer();
            bufff.writeBytes(XorUtils.hexString2Bytes(message));
            channel.writeAndFlush(bufff);
        } else {
            log.error("未建立连接，无法发送消息");
        }
    }

    public void close() {
        if (channel != null) {
            channel.close();
        }
    }
    private byte[] hexStringToByteArray(String hexString) {

        int len = hexString.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
                    + Character.digit(hexString.charAt(i+1), 16));
        }
        return data;
    }
}