NamedExtensionManager fails when loading failing extension in order

[xivo_dev_team]

Given a broken extension (raises an Exception on load)
Given another working extension
When I load the two extensions via NamedExtensionManager with name_order=True
Then NamedExtensionManager throws a KeyError

This behavior is demonstrated in the unit-test of the following Github branch:

https://github.com/openstack/stevedore/compare/master...sduthil:named-load-fail-when-sorted

When name_order is False, the broken extension is ignored, and the loading error is logged.

Is this an expected behavior?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/337043

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/337043
Committed: https://git.openstack.org/cgit/openstack/stevedore/commit/?id=1218ab61a124ead05feea3b10077f06ea551aef6
Submitter: Jenkins
Branch: master

commit 1218ab61a124ead05feea3b10077f06ea551aef6
Author: ChangBo Guo(gcb) <email address hidden>
Date: Mon Jul 4 15:35:31 2016 +0800

    Fix NamedExtensionManager fails when loading failing extension in order

    NamedExtensionManager refer to extensions by names passed by caller.
    A keyError is raised when name_order=True and can't load all extensions.

    Closes-Bug: #1575185
    Change-Id: I79769d4296efe98727751adc19bb8f33d75ba729

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/stevedore 1.16.0 release.