Saltstack - Schedule to ensure service is running not working - service

Question

I'm trying to set up a Saltstack schedule that will check to ensure that a service is running on the minion. However, it doesn't seem like service.running is working as a function on the schedule.
Here's my run.sls file:
test-service-sched:
schedule.present:
- name: test-service-sched
- function: service.running
- seconds: 60
- job_kwargs:
name: test-service
- persist: True
- enabled: True
- run_on_start: True
And I execute the following: salt 'service*' state.apply run
This ends up with the following error on the minion:
2017-03-28 02:47:11,493 [salt.utils.schedule ][ERROR ][6172] Unhandled exception running service.running
Traceback (most recent call last):
File "/usr/lib/python2.6/site-packages/salt/utils/schedule.py", line 826, in handle_func
message=self.functions.missing_fun_string(func))
File "/usr/lib/python2.6/site-packages/salt/utils/error.py", line 36, in raise_error
raise ex(message)
Exception: 'service.running' is not available.
I haven't seen anything in the documentation that says I can't run service.running from a schedule. Is it a known limitation of Salt? Or am I just doing it wrong?
I can use cmd.run, but it ends up spamming the logs with errors if the service is already running.

Answer 1

So, I was pointed in the right direction on the Salt Google Group. There's a difference between execution modules and state modules. Since service.running is an execution module, and schedule only supports state modules, I had to reference it indirectly. I used 2 files:
schedule.sls:
service_schedule:
schedule.present:
- function: state.apply
- minutes: 1
- job_args:
- running
running.sls:
service_running:
service.running:
- name: test_service
Now, running salt 'service*' state.apply schedule did exactly what I wanted it to.