Can a Spark Driver Program be a REST Service by itself?

[Spark Enthusiast]

Folks,
My Use case is as follows:
My Driver program will be aggregating a bunch of Event Streams and acting on 
it. The Action on the aggregated events is configurable and can change 
dynamically.
One way I can think of is to run the Spark Driver as a Service where a config 
push can be caught via an API that the Driver exports.Can I have a Spark Driver 
Program run as a REST Service by itself? Is this a common use case?
Is there a better way to solve my problem?
Thanks