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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2021/09/05 07:12:09 UTC
[GitHub] [dubbo] zrlw edited a comment on issue #8675: [3.0] 单元测试org.apache.dubbo.config.spring.schema.GenericServiceTest的问题
zrlw edited a comment on issue #8675:
URL: https://github.com/apache/dubbo/issues/8675#issuecomment-913098640
从github构建日志看，genericServiceWithoutInterface.$invoke这个ReferenceBean是lazy initializing:
```
2021-09-04T20:19:48.3314340Z 20:19:47.115 [main] DEBUG org.apache.dubbo.config.spring.ReferenceBean$DubboReferenceLazyInitTargetSource - Initializing lazy target object
```
也就是说单元测试执行到下面这条语句时才会创建这个ReferenceBean：
```
result = genericServiceWithoutInterfaceRef.$invoke("sayHello", new String[]{"java.lang.String"}, new Object[]{"generic"});
```
但是ReferenceConfig的init方法最后要调用checkInvokerAvailable去检查invoker连接是否已经ok，节奏是不是有点太快了，延迟初始化的ReferenceBean刚完成构建，相关的连接立马就ok？
github日志显示40多ms后，main线程收到一个null应答后就开始执行Unsubscribe操作了，这时候checkInvokerAvailable应该已经抛过异常了：
```
2021-09-04T20:19:48.3751852Z 20:19:47.246 [main-SendThread(MiningMadness.com:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x10000493ad40000, packet:: clientPath:null serverPath:null finished:false header:: 147,2 replyHeader:: 147,41,0 request:: '/dubbo/org.apache.dubbo.config.spring.api.LocalMissClass/consumers/dubbo%253A%252F%252F172.17.16.1%252Forg.apache.dubbo.config.spring.api.LocalMissClass%253Fapplication%253Ddubbo-generic-consumer%2526category%253Dconsumers%2526check%253Dfalse%2526dubbo%253D2.0.2%2526file.cache%253Dfalse%2526generic%253Dtrue%2526init%253Dfalse%2526interface%253Dorg.apache.dubbo.config.spring.api.LocalMissClass%2526metadata-type%253Dremote%2526pid%253D6992%2526release%253D3.0.3-SNAPSHOT%2526side%253Dconsumer%2526sticky%253Dfalse%2526timestamp%253D1630786787116,-1 response:: null
2021-09-04T20:19:48.3759385Z [04/09/21 20:19:47:247 UTC] main INFO zookeeper.ZookeeperRegistry: [DUBBO] Unsubscribe: dubbo://172.17.16.1/org.apache.dubbo.config.spring.api.LocalMissClass?application=dubbo-generic-consumer&category=providers,configurators,routers&dubbo=2.0.2&file.cache=false&generic=true&init=false&interface=org.apache.dubbo.config.spring.api.LocalMissClass&metadata-type=remote&pid=6992&release=3.0.3-SNAPSHOT&side=consumer&sticky=false×tamp=1630786787116, dubbo version: 3.0.3-SNAPSHOT, current host: 172.17.16.1
```
完整日志见：
https://github.com/apache/dubbo/runs/3514650085?check_suite_focus=true 点设置里的download log archive，下载后打开里面的 4_Unit Test On windows-2019 (JDK 11).txt，文件很大，记事本打不开或者龟速，需要用notepad++之类的大文件编辑工具看。
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