[GitHub] [dubbo] hetianyi opened a new issue #8902: Service cannot be re-registered after it was deregistered by consul （Consul的服务被剔除无法重新注册问题）

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

hetianyi opened a new issue #8902:
URL: https://github.com/apache/dubbo/issues/8902


   - [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
   - [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.
   
   ### Environment
   
   * Dubbo version: 2.7.13
   * Operating System version: Windows 10
   * Java version: 1.8
   
   ### Steps to reproduce this issue
   
   1. Start consul(standalone)  本地以standalone启动consul
   ```shell
   consul.exe agent -server -ui -client=0.0.0.0 -data-dir=./data -node=local-dev -bootstrap-expect=1 -bind=0.0.0.0 -advertise=10.1.199.10
   ```
   ```10.1.199.10``` is your local machine IP address.
   
   假定你当前的IP地址是```10.1.199.10```
   
   2. Start dubbo provider(a springboot application), service name is ```com.xxx.Service1```.
   dubbo registry address must be: ```consul://10.1.199.10:8500```
   In consul web ui, service status ```com.xxx.Service1``` is ok.
   
   启动dubbo provider，是一个springboot应用，假设服务名是```com.xxx.Service1```，dubbo的注册地址是```consul://10.1.199.10:8500```，在consul的web控制台中观察服务```consul://10.1.199.10:8500```的状态正常。
   
   
   3. Switch to another wifi, your IP address will change, and wait consul to deregister service ```com.xxx.Service1```.
   **This is to imitate the abnormal situation of network disconnection**
   
   切换到其他WIFI，你的IP地址会变化（这个过程模拟网络连接异常情况），consul会在几分钟之后将服务```com.xxx.Service1```剔除。
   
   
   4. Switch to the last wifi you connected, your IP addresss turns back to ```10.1.199.10```, but service ```com.xxx.Service1``` will never re-register again, and the springboot keeps print error: 
   ```txt
   2021-09-24 10:43:13,212 WARN  org.apache.dubbo.registry.consul.ConsulRegistry:232 -  [DUBBO] fail to check pass for url: dubbo://10.1.199.10:20080/com.xxx.Service1?application=xxx&deprecated=false&dubbo=2.0.2&release=2.7.13&serialization=kryo&timestamp=1632450634959, check id is: a8fcf2ef, dubbo version: 2.7.13, current host: 192.168.189.1
   com.ecwid.consul.v1.OperationException: OperationException(statusCode=500, statusMessage='Internal Server Error', statusContent='CheckID "service:a8fcf2ef" does not have associated TTL')
   	at com.ecwid.consul.v1.agent.AgentConsulClient.agentCheckPass(AgentConsulClient.java:211)
   	at com.ecwid.consul.v1.agent.AgentConsulClient.agentCheckPass(AgentConsulClient.java:198)
   	at com.ecwid.consul.v1.agent.AgentConsulClient.agentCheckPass(AgentConsulClient.java:193)
   	at com.ecwid.consul.v1.ConsulClient.agentCheckPass(ConsulClient.java:260)
   	at org.apache.dubbo.registry.consul.ConsulRegistry.checkPass(ConsulRegistry.java:224)
   	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   	at java.util.concurrent.FutureTask.runAndReset$$$capture(FutureTask.java:308)
   	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java)
   	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
   	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
   	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   	at java.lang.Thread.run(Thread.java:748)
   ```
   
   再次将WIFI切换回原来的WIFI（模拟网络恢复正常），服务 ```com.xxx.Service1```无法自动重新注册。
   
   Pls. provide [GitHub address] to reproduce this issue.
   
   ### Expected Result
   
   I think the correct way is what spring cloud consul does:
   
   我认为正确的处理方式是spring cloud consul官方的处理方式
   
   https://github.com/spring-cloud/spring-cloud-consul/blob/90b9eee41e5916ba999b25432fe44e1ca4362e2f/spring-cloud-consul-discovery/src/main/java/org/springframework/cloud/consul/discovery/TtlScheduler.java#L118
   
   
   
   ### Actual Result
   
   What actually happens?
   
   If there is an exception, please attach the exception trace:
   
   ```
   Just put your stack trace  #here!
   ```
   


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