ci / build (11, macos-latest) failed could not be reproduced locally.
Schedule delay 3 seconds, and assert unhealthyUpstream is not empty is also 
delay 3 seconds, these two times are too close. Suspect that schedue has not 
yet started, and the assert begins. I changed the Test and delayed the assert 
of the check results.

发件人: XiaoYu<mailto:[email protected]>
发送时间: 2022年3月24日 16:49
收件人: [email protected]<mailto:[email protected]>
主题: Re: PR#3100 When the service shutdown, remov it from the selector

hi Jubo,

you can check ci and fix it.

This error should be caused by multi-threading, or the JDK version

thanks~

Shi Jubo <[email protected]> 于2022年3月24日周四 15:11写道:
>
> Hi XiaoYu,
>
> I have created a new pr #3111:Filter out the virtual URIRegisterDTO when the 
> last service is down
> But ci / build (11, macos-latest) failed again: 
> UpstreamCheckTaskTest.testRun:83 expected: <true> but was: <false>
> I'm going to try it in jdk11.
>
> 发件人: XiaoYu<mailto:[email protected]>
> 发送时间: 2022年3月24日 11:18
> 收件人: [email protected]<mailto:[email protected]>
> 主题: Re: PR#3100 When the service shutdown, remov it from the selector
>
> hi Jubo,
>
> you can new pr to solve this problem~
>
> Shi Jubo <[email protected]> 于2022年3月24日周四 11:00写道:
> >
> > Sorry, there was a problem with the non-http registration, when the last 
> > one service shutdown. I will solve it as soon as possible
> >
> > 发件人: Shi Jubo<mailto:[email protected]>
> > 发送时间: 2022年3月24日 8:46
> > 收件人: [email protected]<mailto:[email protected]>
> > 主题: 回复: PR#3100 When the service shutdown, remov it from the selector
> >
> > Hi XiaoYu,
> >
> >
> > 1.      There were no problems with the last check.
> >
> > 2.     Configuration items have been added.
> >
> > 发件人: XiaoYu<mailto:[email protected]>
> > 发送时间: 2022年3月23日 15:30
> > 收件人: [email protected]<mailto:[email protected]>
> > 主题: Re: PR#3100 When the service shutdown, remov it from the selector
> >
> > hi Jubo,
> >
> > Thanks for your contribution. I  already reviewed it.
> >
> > Your ideas and improvements are very good for me, but there are 2
> > small problems as follows
> >
> > 1.  This pr Must ensure CI can pass. you can see this error [1].
> > 2.  Can the following 1 hour be configured?
> >
> > > Set the status for the upstream service, when the service is registered, 
> > > set the status of the service list in the DB according to the service 
> > > list in the event message, and record the service status change time. Set 
> > > status false when the service deregistration. When the service changes or 
> > > the admin starts, the service that is unavailable for more than 1 hour is 
> > > removed to avoid the zombie service from existing in the DB all the time.
> >
> >
> >
> > [1] : 
> > https://github.com/apache/incubator-shenyu/runs/5655637482?check_suite_focus=true
> >
> > Shi Jubo <[email protected]> 于2022年3月23日周三 15:00写道:
> > >
> > > Hello!
> > >
> > >
> > > For PR#3100 (Fixes 
> > > #3017<https://github.com/apache/incubator-shenyu/issues/3017> ) is 
> > > described below, please review the code. thank!
> > >
> > > Existing service registration and deregistration processing and problems:
> > > 1. For the use of the registry, when there is a service started and 
> > > shutdown, all available services will be queried from the registry during 
> > > registration processing, and event messages will be published for service 
> > > registration.
> > > 2. For http registration, when a service is started and shutdown, the 
> > > service can only be registered.
> > > 3. The event subscriber is not sure what the service register type. When 
> > > a service is registered, the list of services in the event message is 
> > > processed, the list of services in the DB is queried, the list of 
> > > services in the event message is compared with the list of services in 
> > > the DB, and the services that do not exist in the former are added to the 
> > > latter to achieve the purpose of service registration. However, the 
> > > stopped service is not removed from the DB list, and if there is a 
> > > service offline, the gateway will still send the request to the node.
> > > 4. Http registration, after the service shutdown, the dependent heartbeat 
> > > check finds that the service is unavailable, and then removes it from the 
> > > upstream service list. There is a timely removal that causes the gateway 
> > > to send requests to the downed node.
> > >
> > > Modification Notes:
> > > 1. Active deregistration when the http service is stopped, 
> > > EventType=DELETED. Http registration and use registry registration to 
> > > differentiate processing.
> > > 2. Set the status for the upstream service, when the service is 
> > > registered, set the status of the service list in the DB according to the 
> > > service list in the event message, and record the service status change 
> > > time. Set status false when the service deregistration. When the service 
> > > changes or the admin starts, the service that is unavailable for more 
> > > than 1 hour is removed to avoid the zombie service from existing in the 
> > > DB all the time.
> > > 3. The new services and services with changed status are handed over to 
> > > the http registrar for processing.
> > > 4. If it is http registration, the http registrar adds the service to the 
> > > service list according to the service status, or removes it from the 
> > > service list, and then updates the DB and sync to the service list cache. 
> > > Service registration processing ended.
> > > 5. Non-http registration continues to be processed. If the service is 
> > > logged off, remove the service from the DB service list as the list of 
> > > available services (the current non-http registration does not exist, the 
> > > logic is retained, and can be removed), otherwise the service in the 
> > > event message is used as the list of available services. Based on the 
> > > list of available services and db services, generate the final service 
> > > list, update the DB and sync to the service list cache.
> > > _______________________________________
> > > Jerbo99
> >
>

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