puppetlabs/puppetlabs-glance — pull request #28 by bodepd (2012-04-17 18:24:01+00:00)
Title: Ensure that glance requires a backend

Since backend are pluggable, they have been decoupled
from the api class.

This commit adds a requirement from the api class to
a backend to ensure that users receive a clear error message
if they do not include a backend.