ClientException: <attribute 'message' of 'exceptions.BaseException' objects> (HTTP 503)

[Johannes Erdfelt]

If an error is returned from the server but the error code isn't known (like error 503), then a mostly useless error message of 'ClientException: <attribute 'message' of 'exceptions.BaseException' objects> (HTTP 503)' is printed.

Most of the exceptions have a message attribute which provides a useful message, but ClientException itself doesn't and ends up retrieving the message attribute of the base Exception class.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/81876
Committed: https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=e43825bd1c67d22f012978c5de6feff028c75d40
Submitter: Jenkins
Branch: master

commit e43825bd1c67d22f012978c5de6feff028c75d40
Author: Johannes Erdfelt <email address hidden>
Date: Thu Mar 20 11:11:12 2014 -0700

    Print a useful message for unknown server errors

    If a server error is returned that has an unknown code, novaclient will
    end up printing something similar to:

    ClientException: <attribute 'message' of 'exceptions.BaseException' objects>

    Setting a message for ClientException will ensure that something more
    useful than that is printed.

    Change-Id: I43a2a33017f9a5c1b79d7fd8af4153e91d296f7b
    Closes-bug: 1295293