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https://issues.apache.org/jira/browse/CAMEL-8906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14602684#comment-14602684
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Miroslav Matejovsky commented on CAMEL-8906:
--------------------------------------------
Hi Henryk,
I had to use reflection just for workaround because
{{CamelSpringBootApplicationController.mainSupport}} is private.
In pull request {{CamelSpringBootApplicationController}} as a spring bean will
have {{@PreDestroy}} method, so no need for reflection.
> Application hangs when Spring Boot Actuator shutdown hook is used
> -----------------------------------------------------------------
>
> Key: CAMEL-8906
> URL: https://issues.apache.org/jira/browse/CAMEL-8906
> Project: Camel
> Issue Type: Sub-task
> Components: camel-spring-boot
> Affects Versions: 2.15.2
> Reporter: Miroslav Matejovsky
>
> After some investigation:
> * {{org.apache.camel.spring.boot.CamelSpringBootApplicationController}}
> creates {{org.apache.camel.main.MainSupport}} instance
> * {{MainSupport.waitUntilCompleted()}} will hang on {{latch.await()}}
> * To release this lock {{MainSupport.completed()}} has to be called. But this
> never happens
> * CamelSpringBootApplicationController should implement {{@PreDestroy}}
> callback and call {{mainSupport.completed()}}
> * Workaround:
> {code}
> @Autowired
> private CamelSpringBootApplicationController
> camelSpringBootApplicationController;
> @PreDestroy
> public void preDestroy() throws Exception {
> final Field f =
> camelSpringBootApplicationController.getClass().getDeclaredField("mainSupport");
> f.setAccessible(true);
> MainSupport mainSupport = (MainSupport)
> f.get(camelSpringBootApplicationController);
> mainSupport.completed();
> }
> {code}
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