[GitHub] [dubbo] startjava commented on issue #8465: 如何能看到failback失败重试的效果呢？

[GitBox <gi...@apache.org>]

startjava commented on issue #8465:
URL: https://github.com/apache/dubbo/issues/8465#issuecomment-896405113


   debug了一下：
   
   并不进入FailbackClusterInvoker类中的addFailed()方法中。
       @Override
       protected Result doInvoke(Invocation invocation, List<Invoker<T>> invokers, LoadBalance loadbalance) throws RpcException {
           Invoker<T> invoker = null;
           try {
               checkInvokers(invokers, invocation);
               invoker = select(loadbalance, invocation, invokers, null);
               return invokeWithContext(invoker, invocation);
           } catch (Throwable e) {
               logger.error("Failback to invoke method " + invocation.getMethodName() + ", wait for retry in background. Ignored exception: "
                       + e.getMessage() + ", ", e);
               addFailed(loadbalance, invocation, invokers, invoker);
               return AsyncRpcResult.newDefaultAsyncResult(null, null, invocation); // ignore
           }
       }
   
   提供者代码故意出现异常：
       @Override
       public String getHello(String username) {
           System.out.println("HelloService4 portValue=" + portValue);
           if (portValue == 8085) {
               throw new RuntimeException("出现异常！");
           }
           return "hello4 " + username + " port=" + portValue;
       }
   
   
   如何能执行addFailed方法呢？？感谢 


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