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Viewing changes to lib/lp/services/features/__init__.py

  • Committer: Launchpad Patch Queue Manager
  • Date: 2011-08-02 23:44:26 UTC
  • mfrom: (13589.1.1 revert-r13574)
  • Revision ID: launchpad@pqm.canonical.com-20110802234426-z03j07sj334l9ay0
[r=wgrant][rollback=13574] Revert r13574. It crashes when the flag is
 enabled, see bug #810290.

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lib/lp/services/features/__init__.py
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# Copyright 2010-2011 Canonical Ltd.  This software is licensed under the
 
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# Copyright 2010 Canonical Ltd.  This software is licensed under the
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# GNU Affero General Public License version 3 (see the file LICENSE).
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"""Dynamic feature configuration.
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page.
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Installing a feature controller
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===============================
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To use a particular feature controller, you should typicall go through a
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UseFeatureController fixture.
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Setting flags in your tests
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===========================
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import threading
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from fixtures import Fixture
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__all__ = [
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    'UseFeatureController',
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    'get_relevant_feature_controller',
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    'getFeatureFlag',
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    'install_feature_controller',
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"""
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class UseFeatureController(Fixture):
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    """Install a feature controller for the duration of this context.
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    Intended for use with the `with` statement.
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    """
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    def __init__(self, controller):
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        super(UseFeatureController, self).__init__()
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        self.controller = controller
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    def setUp(self):
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        super(UseFeatureController, self).setUp()
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        self.addCleanup(
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            install_feature_controller, get_relevant_feature_controller())
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        install_feature_controller(self.controller)
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def install_feature_controller(controller):
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    """Install a `FeatureController` on this thread."""
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    per_thread.features = controller