Red Hat Bugzilla – Bug 857752
Keystone assertion failing
Last modified: 2016-04-26 12:05:09 EDT
Description of problem:
In service.py definition _get_token_ref(~line 380), an assertion fails:
assert token_ref['tenant']['id'] == belongs_to
Printing these values when the assertion occurs, belongs_to is None. The token_ref is set to a token. However, according to:
The truth value of None is False, so the if conditional should not execute, but seems unclear to me why it is doing so.
According to PEP8 style guidelines:
"Comparisons to singletons like None should always be done with is or is not, never the equality operators.
Also, beware of writing if x when you really mean if x is not None -- e.g. when testing whether a variable or argument that defaults to None was set to some other value. The other value might have a type (such as a container) that could be false in a boolean context!
Current master has similar problems with its assertions.
Note other keystone assertions have similar problems but if possible, I would like this one fixed since I think there may be a security problem with heat + f17.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Modify heat to use proxy_token in novaclient
Keystone will assert and not complete the operation.
The meaning of proxy_token is undocumented (atleast I can't find any). I expect the way it is meant to work is to use a token in place of a api_key so new authentication isn't necessary via an api_key (instead using the token) . I have attached the heat patch from master if you want to duplicate. If I delete the assertion, heat is able to authenticate via the token.
Created attachment 613499 [details]
patch which triggers keystone to assert incorrectly
Please open an upstream bug and add a link to it in this report. Reproducing from Heat is not going to be sufficient: please cache the actual web requests going to Keystone, to include the data used to populate the Keystone Repo.
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