Improve toString for reactive ScheduledTask

[slaha]

Hello,

There were some improvements in the actuator/scheduledtasks endpoint in SpringBoot 3.4 which are great but when the task is reactive (kotlin suspend function in my case but I think the same applies for reactor types), the task is wrapped in SubscribingRunnable and therefore the name of the task (in runnable.target) does not show the actual name of the task:

{
    "runnable": {
        "target": "org.springframework.scheduling.annotation.ScheduledAnnotationReactiveSupport$SubscribingRunnable@62658650"
    },
    "initialDelay": 1067,
    "interval": 120000,
    "nextExecution": {
        "time": "2024-12-02T20:26:46.714560Z"
    },
    "lastExecution": {
        "time": "2024-12-02T20:24:46.666944Z",
        "status": "SUCCESS"
    }
}

I checked the sources and it does not seem there is an easy way how to change the value. The SubscribingRunnable.toString is used. My suggestion is to override the toString method in SubscribingRunnable to show coordinates of the actual task method.

So TLDR:
Problem: Name of scheduled task in actuator/scheduledtasks is useless when task is wrapped in SubscribingRunnable
Desired state: The name is taken from the actual task class/method, not SubscribingRunnable.

SpringBoot version: 3.4.0

[lucky8987]

@bclozel Can this issue be assigned to me? I can submit a PR to fix it.

@Override
public String toString() {
	Method method = contextSupplier.get().getMethod();
	return method.getDeclaringClass().getName() + "." + method.getName();
}

[bclozel]

Thanks for the proposal but it's already assigned.