Multiple TaskSchedulers to be supported with @Scheduled [SPR-16271]

[spring-projects-issues]

Peter Szanto opened SPR-16271 and commented

I would like to have multiple scheduled tasks in my application, with multiple their pool size, thread name and some as daemon. I can customize these properties using a TaskScheduler, but in an single application I can have only one TaskScheduler. It would be nice if I could define multiple schedulers and refer them in the @Scheduled annotation similar as I can refer cache name in the @Cacheable annotation. There could be even something similar to @CacheConfig so class level settings for multiple scheduled definitions could be configured

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Affects: 4.3.13

[Axinet]

It is also worth to mention that @Async annotation also working on executors has already such option since 3.1.2. I am really surprised that @Scheduled annotation has been skipped then.

[warrior107]

Hi,
Is someone working on this? Or is there a workaround for the time being?

[idkw]

Hello, I also need this.
Current workaround is to call an @async method from a @scheduled method but this is very confusing to maintain

[idkw]

Another workaround but it would be simpler for it to be supported directly via the annotation.
The @scheduled annotation processor in spring builds a ScheduledMethodRunnable instance as the Runnable passed into the TaskScheduler so theorically we could build a TaskScheduler wrapper that plays the role of a dispatcher that uses the method name to select which actual TaskScheduler to use.

But again, a native support would be very much appreciated

From : org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor

[dantebarba]

@idkw great answer!. Can you post the generic dispatcher code into some gist? Thanks.

[idkw]

@idkw great answer!. Can you post the generic dispatcher code into some gist? Thanks.

I don't have any code, this was just an idea of a possible workaround

[marwin1991]

any progres ?

[jhoeller]

This is finally coming in 6.1 now: with a scheduler attribute on @Scheduled and supporting infrastructure underneath, including a qualifier value on SchedulingAwareRunnable and ScheduledMethodRunnable. Note that this is analogous to the transactionManager attribute on @Transactional, even more so than the qualifier value on @Async.