Magic RoR Sandbox?

I wanna write a RoR app that process batch jobs from a shopping cart: the batch job specifies configuration and code and results are delivered as they are created.  Can I pass detailed configuration information to and from the sandboxed code?  Can the RoR app create and populate enough of a filesystem such that the code could run over a half dozen huge files and then create multiple reports from them.  Can the code be Python or C++?