Use dedicated task executor for @ApplicationModuleListeners

[odrotbohm]

@ApplicationModuleListeners need dedicated control over the Executor running them, for example, to enable tracing context propagation in the observability module. To contain the impact of such a customization, it makes sense to use a dedicated Executor.

Implementation considerations

• Register a dedicated ThreadPoolTaskExecutor/SimpleAsyncTaskExecutor with a dedicated name and refer to that from the @Async annotation on @ApplicationModuleListener (@ConditionalOnThreading, @ConditionalOnMissingBean)

References

• Automatically enable TraceContext propagation in observability auto-configuration #637

[danstooamerican]

Will it be possible to configure the Executor or extend its functionality? Our application configures a custom TaskDecorator. Currently, we use a custom aspect to get the same functionality for @ApplicationModuleListener.

[odrotbohm]

Yes, you'll be able to override the bean by name. Or use a BeanPostProcessor to find and customize it.