jarv

The XQueue software is one of our earliest components and not very
well documented unfortunately.
What it is from a high level is a Django app that monitors a rabbitMQ
cluster that takes student submissions and makes it available to an
external grader.

Here is example code that watches the xqueue for new submissions and
grades them using our python grader -
https://github.com/edx/xqueue-watcher
Here is documentation that describes how to interface with xqueue -