package com.dy.simRtu202404.tcpClient;

import com.dy.common.util.ByteUtil;
import com.dy.simRtu202404.tcpClient.downData.DownData;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.CumulativeProtocolDecoder;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;

import java.io.IOException;
/**
 * @Author: liurunyu
 * @Date: 2025/02/26 11:10
 * @Description
 */
public class LocalDecoder extends CumulativeProtocolDecoder {

    private static final Logger log = LogManager.getLogger(LocalDecoder.class) ;

    private static final String DECODER_STATE_KEY = LocalDecoder.class.getName() + ".STATE";

    public static final int MAX_SIZE = 2147483647 ;


    /**
     * 对网络传输来的数据进行解码
     */
    protected boolean doDecode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws IOException, Exception{
        int remain = in.remaining() ;
        if(remain > 0){
            byte[] bs = new byte[remain];
            in.get(bs) ;
            in.position(0) ;
            log.info("收到中间件下行数据：" + ByteUtil.bytes2Hex(bs, true));
            new DownData().parseData(bs);
        }
        return true;
    }


}