Chef - repetitive recipe execution

Question

First off, can (and is it good practice) chef run a recipe at a specified interval on a specific role?

I've got a ruby script which manages user accounts and ssh identities, it currently runs on a cron every hour and I'd like to turn it into a Chef recipe for obvious reasons (I want it to be there on all machines).

I can see two ways of doing this:

Either turn the script into a template, the recipe would simply render the template to a given path and then register a cronjob

OR

Break the script into resources, providers, etc., and have Chef run it every hour.

Ideas?