Log of Deliver actions.

I am working on a project that requires a log of all the Deliver actions. Is there an easy way to get that info into a file based log format? Each record might look something like: .
The two options that I have investigated are 1) A post deliver server-side action to write the info in a log file or 2) Have an external feed reader service capture and persist the info. Is there a better easier way of getting this information in a log file format?