triple 协议 stub 调用无法捕获自定义异常甚至 RpcException

beastqin commented 1 year ago

version：dubbo 3.2.2 现象：使用 triple 协议 + IDL（protobuf stub），provider 端抛出RpcException 后，consumer 端无法捕获具体的 code，统一为Unknown，同理自定义异常也被处理为 Unknow RpcException。

Provider 端异常抛出代码：

   @Override
    public ListFollowersResponse listFollowers(ListFollowersOptions request) {
        throw new RpcException(BIZ_EXCEPTION, "test exception");
    }

Consumer 端日志打印：debug get rpc ex: org.apache.dubbo.rpc.StatusRpcException: UNKNOWN : test exception

因为比较疑惑，Dubbo 3.2.0 版本开始 Triple 协议支持回传自定义异常，所以扒了下原因：

            if (hasStub) {
                listener = new StubAbstractServerCall(invoker, TripleServerStream.this,
                    frameworkModel,
                    acceptEncoding, serviceName, originalMethodName, executor);
            } else {
                listener = new ReflectionAbstractServerCall(invoker, TripleServerStream.this,
                    frameworkModel, acceptEncoding, serviceName, originalMethodName, filters,
                    executor);
            }

看上去 TripleServerStream 在存在 stub 被调用时，会选用默认关闭 Exception Wrapper 的序列化选项的 StubAbstractServerCall。所以，使用 IDL 调用是无法处理自定义异常吗？以及标准的 RpcException 的处理似乎也有问题。后续会解决这个问题吗？

AlbumenJ commented 1 year ago

@EarthChen @icodening PTAL

icodening commented 1 year ago

@beastqin 可以尝试使用3.2.3，相关PR https://github.com/apache/dubbo/pull/12446

deific commented 1 year ago

我也遇到这个问题，使用3.2.3也不行，会报超时异常。

2023-07-04 15:13:43.305  WARN 11230 --- [imeout-thread-1] o.a.dubbo.common.timer.HashedWheelTimer  :  [DUBBO] An exception was thrown by TimerTask., dubbo version: 3.2.3, current host: 192.168.1.24, error code: 0-19. This may be caused by , go to https://dubbo.apache.org/faq/0/19 to find instructions. 

java.util.concurrent.RejectedExecutionException: null
    at org.apache.dubbo.common.threadpool.ThreadlessExecutor.execute(ThreadlessExecutor.java:101) ~[dubbo-3.2.3.jar:3.2.3]
    at org.apache.dubbo.rpc.protocol.tri.DeadlineFuture$TimeoutCheckTask.run(DeadlineFuture.java:153) ~[dubbo-3.2.3.jar:3.2.3]
    at org.apache.dubbo.common.timer.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:653) ~[dubbo-3.2.3.jar:3.2.3]
    at org.apache.dubbo.common.timer.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:732) ~[dubbo-3.2.3.jar:3.2.3]
    at org.apache.dubbo.common.timer.HashedWheelTimer$Worker.run(HashedWheelTimer.java:454) ~[dubbo-3.2.3.jar:3.2.3]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

apache / dubbo

triple 协议 stub 调用无法捕获自定义异常甚至 RpcException #12632