Handle Application Shutdown Event in Spring

[hamidonos]

Situtaiton

Currently we use @PreDestroyto handle application shutdowns which is not optimal because @PreDestroy can also be called when the bean is destroyed manually.

Solution

Use ApplicationListener<ContextClosedEvent> for such cases.

@Component
public class AppShutdownListener implements ApplicationListener<ContextClosedEvent> {

    @Override
    public void onApplicationEvent(ContextClosedEvent event) {
        System.out.println("Application is shutting down. Cleaning up resources...");
    }
}

Use the existing ShutdownSupport for this.

Change predestroy() to onShutdown()