Keystone client fails to authorize during trust creation

[Pablo Andres Fuente]

The current Keystone client for the V3 API fails to authorize during a trust creation.

2014-06-02 11:50:39.233 19207 ERROR climate.api.v1.utils [-] Traceback (most recent call last):
  File "/opt/stack/blazar/climate/api/v1/utils.py", line 76, in handler
    return func(**kwargs)
  File "/opt/stack/blazar/climate/api/v1/oshosts/v1_0.py", line 37, in computehosts_create
    return api_utils.render(host=_api.create_computehost(data))
  File "/opt/stack/blazar/climate/utils/__init__.py", line 32, in __run_method
    return getattr(self.instance, __name)(*args, **kwargs)
  File "/opt/stack/blazar/climate/policy.py", line 109, in wrapped
    return func(self, *args, **kwargs)
  File "/opt/stack/blazar/climate/utils/trusts.py", line 84, in wrapped
    trust = create_trust()
  File "/opt/stack/blazar/climate/utils/trusts.py", line 27, in create_trust
    client = keystone.ClimateKeystoneClient()
  File "/opt/stack/blazar/climate/utils/openstack/keystone.py", line 114, in __init__
    self.keystone.authenticate()
  File "/opt/stack/python-keystoneclient/keystoneclient/utils.py", line 324, in inner
    return func(*args, **kwargs)
  File "/opt/stack/python-keystoneclient/keystoneclient/httpclient.py", line 392, in authenticate
    resp = self.get_raw_token_from_identity_service(**kwargs)
  File "/opt/stack/python-keystoneclient/keystoneclient/v3/client.py", line 188, in get_raw_token_from_identity_service
    '%s' % e)
AuthorizationFailure: Authorization failed: Cannot authenticate without an auth_url

After checking the Keystone code, I found that the HTTPClient class is not storing internally the auth_url received during initialization (https://github.com/openstack/python-keystoneclient/blob/master/keystoneclient/httpclient.py#L59).
I'm on Keystone IRC trying to determine if this is a Keystone bug or we are using incorrectly the client.

As a quick patch, is possible to resend the auth_url as a parameter of the authenticate() method (https://github.com/stackforge/blazar/blob/master/climate/utils/openstack/keystone.py#L114)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/97565
Committed: https://git.openstack.org/cgit/stackforge/blazar/commit/?id=eec7f456b45f222db296f2f29ce23309358decff
Submitter: Jenkins
Branch: master

commit eec7f456b45f222db296f2f29ce23309358decff
Author: Pablo Andres Fuente <email address hidden>
Date: Tue Jun 3 14:15:16 2014 -0300

    Passing auth_url to keystoneclient.authenticate

    During the creation of a trust, our Keystone client implementation calls
    the authenticate method which fails due to the auth_url parameter is
    missing. Seems that the current V3 Kestone client isn't honoring the auth_url
    passed during initialization.
    If you call the authenticate method without passing the auth_url
    parameter, the authentication fails because that parameter was not
    properly set, but should work because that parameter is passed during
    initialization.
    This commit tries to fix the issue until a patch from Keystone lands to
    master.

    Change-Id: Id242dcac31fe535836033dff951844a66bcc2100
    Closes-Bug: #1326066