[Bug 1880959] Please test proposed package

[Corey Bryant]

Hello Dmitrii, or anyone else affected,

Accepted python-oslo.policy into queens-proposed. The package will build
now and be available in the Ubuntu Cloud Archive in a few hours, and
then in the -proposed repository.

Please help us by testing this new package. To enable the -proposed
repository:

  sudo add-apt-repository cloud-archive:queens-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-queens-needed to verification-queens-done. If it does
not fix the bug for you, please add a comment stating that, and change
the tag to verification-queens-failed. In either case, details of your
testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Changed in: cloud-archive/queens
       Status: Triaged => Fix Committed

** Tags added: verification-queens-needed

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https://bugs.launchpad.net/bugs/1880959

Title:
  Rules from the policy directory files are not reapplied after changes
  to the primary policy file

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive mitaka series:
  Won't Fix
Status in Ubuntu Cloud Archive queens series:
  Fix Committed
Status in Ubuntu Cloud Archive rocky series:
  Fix Released
Status in Ubuntu Cloud Archive stein series:
  Fix Released
Status in Ubuntu Cloud Archive train series:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  Fix Released
Status in oslo.policy:
  Fix Released
Status in python-oslo.policy package in Ubuntu:
  Fix Released
Status in python-oslo.policy source package in Xenial:
  Won't Fix
Status in python-oslo.policy source package in Bionic:
  Fix Committed
Status in python-oslo.policy source package in Eoan:
  Won't Fix
Status in python-oslo.policy source package in Focal:
  Fix Released
Status in python-oslo.policy source package in Groovy:
  Fix Released

Bug description:
  [Impact]
  Based on the investigation here https://bugs.launchpad.net/charm-keystone/+bug/1880847 it was determined that rules from policy files located in the directory specified in the policy_dirs option (/etc/<config_dir>/policy.d by default) are not re-applied after the rules from the primary policy file is re-applied due to a change.

  This leads to scenarios where incorrect rule combinations are active.

  Example from the test case in 1880847:

  * policy.json gets read with the following rule;
      "identity:list_credentials": "rule:admin_required or user_id:%(user_id)s",
  * rule.yaml from policy.d is read with the following rule;
  {'identity:list_credentials': '!'}
  * policy.json's mtime gets updated (with or without a content change) and overrides the rule to be
      "identity:list_credentials": "rule:admin_required or user_id:%(user_id)s",
  * rule.yaml doesn't get reapplied since it hasn't changed.

  [Test Case]
  == ubuntu ==

  The patches include unit tests that ensure the code is behaving as
  expected and has not regressed. These tests are run during every
  package build.

  == upstream ==
  For a particular version of oslo.policy:

  * put the attached test (https://bugs.launchpad.net/ubuntu/+source
  /python-
  oslo.policy/+bug/1880959/+attachment/5377753/+files/test_1880959.py)
  under oslo_policy/tests/test_1880959.py;

  * run tox -e cover -- oslo_policy.tests.test_1880959.EnforcerTest;
  * observe the failure;
  # ...
  testtools.matchers._impl.MismatchError: 'role:fakeA' != 'rule:admin'
  Ran 1 tests in 0.005s (+0.001s)
  FAILED (id=1, failures=1)

  * apply the patch;
  * run tox -e cover -- oslo_policy.tests.test_1880959.EnforcerTest
  * observe that the failure is no longer there.

  [Regression Potential]
  The regression potential is low given that there is test coverage in the olso.policy unit tests.

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