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# Copyright 2011 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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"""FeatureFlagApplication allows access to information about feature flags."""
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'IFeatureFlagApplication',
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'FeatureFlagApplication',
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from zope.component import getUtility
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from zope.interface import implements
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from canonical.launchpad.webapp.interfaces import ILaunchpadApplication
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from lp.registry.interfaces.person import IPersonSet
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from lp.services.features.flags import FeatureController
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from lp.services.features.rulesource import StormFeatureRuleSource
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from lp.services.features.scopes import (
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class IFeatureFlagApplication(ILaunchpadApplication):
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"""Mailing lists application root."""
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def getFeatureFlag(flag_name, username=None, scopes=()):
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"""Return the value of the given feature flag.
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:param flag_name: The name of the flag to query.
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:param username: If supplied, the name of a Person to use in
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evaluating the 'team:' scope.
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:param scopes: A list of scopes to consider active. The 'default'
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scope is always considered to be active, and does not need to be
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class FeatureFlagApplication:
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implements(IFeatureFlagApplication)
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def getFeatureFlag(self, flag_name, active_scopes=()):
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scopes = list(default_scopes)
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for scope_name in active_scopes:
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if scope_name.startswith('user:'):
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person = getUtility(IPersonSet).getByName(
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scope_name[len('user:'):])
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if person is not None:
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scopes.append(TeamScope(person))
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scopes.append(FixedScope(scope_name))
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flag_name = unicode(flag_name)
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controller = FeatureController(
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MultiScopeHandler(scopes).lookup, StormFeatureRuleSource())
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return controller.getFlag(flag_name)
added
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lib/lp/services/features/xmlrpc.py
