CDN Integration / Failover in an iRule?

While not exactly the same, I have a related question:

 

 

is it possible to take some action (e.g. run a script, make a Web Service call) based on the information available to an iRule?

 

 

I'd like to have a collection of physical servers, a few different VMWare virtual server configurations at the ready, and the ability to automatically "provision" a virtual server by making a call to VMWare (and adding it to a pool) when certain situations come up.

 

 

This would let me re-purpose servers in real-time as I need them for different systems.

 

 

Thanks,

 

Scott