aodh/ceilometer/policy.py
Mark McLoughlin 5181724ece Use oslo-config-2013.1b3
The cfg API is now available via the oslo-config library, so switch to
it and remove the copied-and-pasted version.

Add the 2013.1b3 tarball to tools/pip-requires - this will be changed
to 'oslo-config>=2013.1' when oslo-config is published to pypi. This
will happen in time for grizzly final.

For each testenv in tox.ini which overrides the base testenv deps list,
explicitly include {pip,test}-requires in the list so that oslo-config
doesn't fail to install later when easy_install attempts to install
the tarball when doing 'python setup.py install'.

Retain dummy cfg.py file until keystoneclient middleware has been
updated (I18c450174277c8e2d15ed93879da6cd92074c27a).

Change-Id: I4815aeb8a9341a31a250e920157f15ee15cfc5bc
2013-02-18 12:38:10 +00:00

68 lines
1.9 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2011 OpenStack, LLC.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Policy Engine For Ceilometer"""
import os
from oslo.config import cfg
from ceilometer import utils
from ceilometer.openstack.common import policy
OPTS = [
cfg.StrOpt('policy_file',
default='policy.json',
help='JSON file representing policy'),
cfg.StrOpt('policy_default_rule',
default='default',
help='Rule checked when requested rule is not found'),
]
cfg.CONF.register_opts(OPTS)
_POLICY_PATH = None
_POLICY_CACHE = {}
def init():
global _POLICY_PATH
global _POLICY_CACHE
if not _POLICY_PATH:
_POLICY_PATH = cfg.CONF.policy_file
if not os.path.exists(_POLICY_PATH):
_POLICY_PATH = cfg.CONF.find_file(_POLICY_PATH)
if not _POLICY_PATH:
raise cfg.ConfigFilesNotFoundError([cfg.CONF.policy_file])
utils.read_cached_file(_POLICY_PATH, _POLICY_CACHE,
reload_func=_set_rules)
def _set_rules(data):
default_rule = cfg.CONF.policy_default_rule
policy.set_rules(policy.Rules.load_json(data, default_rule))
def check_is_admin(roles):
"""Whether or not roles contains 'admin' role according to policy setting.
"""
init()
return policy.check('context_is_admin', {}, {'roles': roles})