[编织消息框架][设计协议]opCode

OpCode(Operation Code) 操作码的意思。

OpCode 有几种域组成,不同领域格式组成不同

1.指令号

2.数据范围

3.数据内容

如 {code}{addr range}{data}

{1}{2-5}{2至5地址内容为 "你好"}

{2}{6-10}{6至10地址内容为 "hello"}

这种编码可以应用到其它领域，本项目用的格式是

{data model}{data}

源码解读

QOpCode 类维护所有opCode

 /**
  * @author solq
  **/
 @Target(TYPE)
 @Retention(RUNTIME)
 public @interface QOpCode {
     short value();

     public static final short QPRODUCE = 1;
     public static final short QCONSUME = 2;
     public static final short QSUBSCIBE = 3;
     public static final short QCODE = 4;
     public static final short QRPC = 5;

 } 

QDispenseHandler.class

 private void doReceive0(QPacket packet, ChannelHandlerContext ctx) {

     boolean response = packet.hasStatus(QPacket.MASK_RESPONSE);
             // 业务处理
     final short c = packet.getC();
     switch (c) {
         case QOpCode.QPRODUCE:
         if (produceHandler != null) {
             QProduce produce = packet.toProduce();
             produceHandler.onReceive(ctx, packet, produce);
         }
         break;
         case QOpCode.QCONSUME:
         if (consumeHandler != null) {
             QConsume qConsume = packet.toConsume();
             consumeHandler.onReceive(ctx, packet, qConsume);
         }
         break;
         case QOpCode.QSUBSCIBE:
         if (subscribeHandler != null) {
             Collection<QSubscribe> qSubscribe = packet.toSubscribe();
             subscribeHandler.onReceive(ctx, packet, qSubscribe);
         }
         break;
         case QOpCode.QRPC:
         response = false;
         // 业务回写请求
         if (rpcHandler != null) {
             QRpc qRpc = packet.toRpc();
             rpcHandler.onReceive(ctx, packet, qRpc);
         }
         break;
         case QOpCode.QCODE:
         response = false;
         // 响应请求
         if (responseHandler != null) {
             short code = packet.toCode();
             responseHandler.onReceive(ctx, packet, code);
         }
         break;
         default:
         throw new QSocketException(QCode.SOCKET_UNKNOWN_OPCODE, " opCode : " + c);
     }

 }

根据不同的model code 进行解释，然后调用应用层处理

其中应用层处理统一实现 IQReceiveHandler 接口规范处理参数同处理行为

     //应用层逻辑
     protected IQReceiveHandler<QProduce> produceHandler;
     protected IQReceiveHandler<QConsume> consumeHandler;
     protected IQReceiveHandler<Collection<QSubscribe>> subscribeHandler;
     protected IQReceiveHandler<Short> responseHandler;
     protected IQReceiveHandler<QRpc> rpcHandler;

     //通信层逻辑
     protected IQReceiveHandler<Void> acceptHandler;
     protected IQReceiveHandler<Void> closeHandler;

     protected IQReceiveHandler<Void> beforeHandler;
     protected IQReceiveHandler<Void> afterHandler;

 /**
  *
  * 响应端 业务逻辑
  *
  * @author solq
  **/
 public interface IQReceiveHandler<T> {

     void onReceive(ChannelHandlerContext ctx,QPacket packet, T body);

 }