package com.ard.utils.netty.udp;

import com.ard.alarm.tube.service.TubeAlarmService;
import com.ard.utils.util.SpringUtils;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.DatagramPacket;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.Charset;

@Slf4j(topic = "netty")
public class NettyUdpHandler extends SimpleChannelInboundHandler<DatagramPacket> {

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket packet) {
        try {
            ByteBuf byteBuf = packet.content();
            String str = byteBuf.toString(Charset.forName("GBK"));
            log.info("udp收到数据: " + str);
            TubeAlarmService tubeAlarmService = SpringUtils.getBean(TubeAlarmService.class);
            tubeAlarmService.alarmHandler(str);
            String resStr = "ok";
            byte[] resBytes = resStr.getBytes(Charset.forName("GBK"));
            DatagramPacket resData = new DatagramPacket(Unpooled.copiedBuffer(resBytes), packet.sender());
            ctx.writeAndFlush(resData);
        } catch (Exception e) {
            log.error("udp接收数据异常:" + e.getMessage());
        }
    }
}