dubbo2 与 dubbox 区别记录

[zifeiyu0531]

区别1

dubbo2包前缀为org.apache
dubbox包前缀为com.alibaba

区别2

dubbox的AbstractProtocol类中未实现public <T> Invoker<T> refer(Class<T> type, URL url)方法，需要将拦截refer方法的逻辑下沉到AbstractProtocol的实现类中去

• dubbo2:

  private void addTransformers() {
      transformTemplate.transform("org.apache.dubbo.rpc.protocol.AbstractProtocol", AbstractProtocolTransform.class);
      ......
  }

• dubbox:

   private void addTransformers() {
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.AbstractProxyProtocol", ProtocolTransform.class);
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol", ProtocolTransform.class);
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.redis.RedisProtocol", ProtocolTransform.class);
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.injvm.InjvmProtocol", ProtocolTransform.class);
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.memcached.MemcachedProtocol", ProtocolTransform.class);
        transformTemplate.transform("com.alibaba.dubbo.rpc.protocol.thrift.ThriftProtocol", ProtocolTransform.class);
        ........
    }

区别3

拦截setRegistryFactory(RegistryFactory registryFactory)方法时，dubbo2调用该方法的是InterfaceCompatibleRegistryProtocol对象，但dubbox中未实现该类，调用该方法的是RegistryProtocol，后者为前者的父类。当通过反射获取this.registryFactory属性时，dubbo2需要从父类中取，dubbox可以直接在当前类中取

• dubbo:

ReflectUtil.setValueByFieldName(target, "registryFactory", new PolarisRegistryFactory());

• dubbox:

ReflectUtil.setSuperValueByFieldName(target, "registryFactory", new PolarisRegistryFactory());

区别4

订阅功能doSubscribe(URL url, NotifyListener listener)方法中，bubbo2的listener是ServiceDiscoveryRegistryDirectory对象，dubbox中未实现该类，listener是RegistryProtocol对象

• dubbo:

ServiceDiscoveryRegistryDirectory directory = (ServiceDiscoveryRegistryDirectory) listener;
Protocol protocol = (Protocol) ReflectUtil.getSuperObjectByFieldName(directory, "protocol");

• dubbox:

RegistryDirectory directory = (RegistryDirectory) listener;
Protocol protocol = (Protocol) ReflectUtil.getObjectByFieldName(directory, "protocol");