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Posted to commits@servicecomb.apache.org by GitBox <gi...@apache.org> on 2020/08/14 06:52:07 UTC

[GitHub] [servicecomb-java-chassis] liukuancn opened a new issue #1918: 优雅停机能力

liukuancn opened a new issue #1918:
URL: https://github.com/apache/servicecomb-java-chassis/issues/1918


   请问servicecomb有提供优雅停机的能力吗，即停机前不会接入新的微服务调用，但是要等业务处理完当前正在处理的业务再停机，多谢！


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[GitHub] [servicecomb-java-chassis] yhs0092 commented on issue #1918: 优雅停机能力

Posted by GitBox <gi...@apache.org>.

yhs0092 commented on issue #1918:
URL: https://github.com/apache/servicecomb-java-chassis/issues/1918#issuecomment-673925432


   建议查看一下`SCBEngine#doDestroy`方法的代码，Java-Chassis 向 JVM 注册了 shutdown hook 来进行进程退出前的终止操作，称为 优雅停机。它基本符合你的描述。
   如果你想要感知服务进程退出的并做一些自定义的操作的话，可以监听`BootListener`中定义的`BEFORE_CLOSE`事件。
   
   PS：`SCBEngine#blockShutDownOperationForConsumerRefresh`方法可以在微服务进程退出时阻塞住退出线程一段时间，给 consumer 端实例留出从 sc 感知 provider 实例下线的时间。可以试用一下这个功能，看看是否适合你的部署场景。


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