package com.zy.acs.gateway.handler;
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import com.zy.acs.common.domain.protocol.IMessageBody;
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import com.zy.acs.common.utils.Utils;
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import com.zy.acs.gateway.AbstractInboundHandler;
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import com.zy.acs.gateway.constant.ProtocolType;
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import com.zy.acs.gateway.domain.AgvPackage;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandler;
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import io.netty.channel.ChannelHandlerContext;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Component;
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/**
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* 报文主体handler
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* Created by vincent on 2023-03-15
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*/
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@Component("messageBodyHandler")
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@ChannelHandler.Sharable
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public class MessageBodyHandler extends AbstractInboundHandler<AgvPackage> {
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private static final Logger log = LoggerFactory.getLogger(MessageBodyHandler.class);
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@Override
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@SuppressWarnings("all")
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protected boolean channelRead0(ChannelHandlerContext ctx, AgvPackage pac) {
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String namespace = IMessageBody.class.getPackage().getName();
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ProtocolType protocolType = pac.getHeader().getProtocolType();
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if (null == protocolType) {
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// 未知包
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return Boolean.FALSE;
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}
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String className = namespace + ".AGV_" + Utils.zeroFill(Integer.toHexString(protocolType.getCode()).toUpperCase(), 2)
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+"_"
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+ pac.getHeader().getProtocolType().getDirection().toString().toUpperCase();
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Class<?> cls = null;
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try {
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cls = Class.forName(className);;
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} catch (ClassNotFoundException e) {
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log.error("MessageBodyHandler ClassNotFoundException", e);log.error("找不到指定类：{}", className);
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return Boolean.FALSE;
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}
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Object obj = null;
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if (null != cls) {
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try {
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obj = cls.newInstance();
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} catch (ReflectiveOperationException reflectiveOperationException) {
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log.error("MessageBodyHandler ReflectiveOperationException", reflectiveOperationException);
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log.error("java反射创建实例失败：{}", className);
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// 。。。
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return Boolean.FALSE;
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}
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}
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ByteBuf contentBuf = pac.getBody().getContent(); contentBuf.markReaderIndex(); // sign
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// body.buf 属于切片获取， slice 与 channel中的缓冲区 为同一 refenec
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contentBuf.resetReaderIndex();
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int len= contentBuf.readableBytes();
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byte[] bytes = new byte[len];
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pac.getBody().getContent().readBytes(bytes);
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// 读取字节数组 ===>> 实际报文类型
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IMessageBody iMessageBody = null;
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if (null != obj) {
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if ( obj instanceof IMessageBody) {
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iMessageBody = (IMessageBody) obj;
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iMessageBody.readFromBytes(bytes);
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}
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}
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pac.getBody().setMessageBody(iMessageBody); contentBuf.resetReaderIndex();
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return true;
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}
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}
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