OpenNebula

Peeking in the code, I discovered that the Client class throws it when
it does not find two mandatory resources, the $ONE_AUTH file and the
SHA-1 algorithm.

In my (not so) humble opinion, the use of the raw Exception is not
meaningful enought, the use of a OneSetupException would have add NO
testing or correctness complication and could be more useful for the
coder.

Furthermore, I think these are Errors, not Exceptions since you have
no way to recover from one with a try/catch, you have to stop the VM,
correct the setup and restart.

I attach a modified version that uses an Error subclass named OpenNebulaConfigurationError. A long name, but nobody else should write it :).

BTW, putting in the Error I discovered that IOExceptions caused by an unreadable ONE_AUTH where not handled and slipped up as normal Exceptions.

If the OpenNebula team wants, may change the superclass and the name of OpenNebulaConfigurationError, but I would like to know it soon since I am working on some OVF aware OCCI interface for the Venus-C project. Thank you,