Getting the versions of the API fails

[Juan Antonio Osorio Robles]

so, doing a simple curl <host>:8888 fails with the following message to the client:
$ curl 192.0.2.1:8888
{
    "title": "Internal server error",
    "description": "LooseVersion instance has no attribute 'version'"
}
The following stack-trace can be seen in the zaqar logs:
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver [-] LooseVersion instance has no attribute 'version'
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver Traceback (most recent call last):
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver File "/usr/lib/python2.7/site-packages/falcon/api.py", line 187, in __call__
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver params)
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver File "/usr/lib/python2.7/site-packages/falcon/api.py", line 561, in _call_rsrc_mw
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver process_resource(req, resp, resource, params)
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver File "/usr/lib/python2.7/site-packages/zaqar/transport/wsgi/driver.py", line 61, in process_resource
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver return self.func(req, resp, params)
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver File "/usr/lib/python2.7/site-packages/zaqar/common/transport/wsgi/helpers.py", line 102, in extract_project_id
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver if not params['project_id'] and api_version >= LooseVersion('v1.1'):
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver File "/usr/lib64/python2.7/distutils/version.py", line 296, in __cmp__
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver return cmp(self.version, other.version)
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver AttributeError: LooseVersion instance has no attribute 'version'
2016-08-04 06:42:44.595 3363 ERROR zaqar.transport.wsgi.driver

This is because we try to get a version from the request's path, even if it doesn't need to be there, which is the case of the versions endpoint (or the / endpoint).

On the other hand, it seems that zaqar always checks for the project-id. Which is appropriate for all versions (or routes) except the root one.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/351039
Committed: https://git.openstack.org/cgit/openstack/zaqar/commit/?id=cf6210df07dc29cb952d33f9d65cec8b49b04718
Submitter: Jenkins
Branch: master

commit cf6210df07dc29cb952d33f9d65cec8b49b04718
Author: Juan Antonio Osorio Robles <email address hidden>
Date: Thu Aug 4 10:20:35 2016 +0300

    Don't check for project-id if accessing the / route

    The versions route (or / route) should be publicly accessible and is
    used for keystone discovery. We shouldn't be checking for the
    project-id if that's accessed. On the other hand, this also fixes the
    issue where the server crashes if no version is given.

    Change-Id: I0481ef6f3920c8ee56ea79ed5621206246b26299
    Closes-Bug: #1609662

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/zaqar 3.0.0.0b3 development milestone.