action on MQTT while long loop is running

[runboy]

hate to point to stackoverflow, but this looks like what you need for your interrupts
https://stackoverflow.com/questions/2395...read-event

It is at very specific points that I want the interrupt to happen and the roll back is dependent on exactly how far the process has come, so I decided to do it manually by doing a

while not Jacuzzi_q.empty()

at the specific points in the code.