[jira] [Created] (CAMEL-8906) Application hangs when Spring Boot Actuator shutdown hook is used

["Miroslav Matejovsky (JIRA)" <ji...@apache.org>]

Miroslav Matejovsky created CAMEL-8906:
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             Summary: 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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