58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
# Copyright 2017 FUJITSU LIMITED
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import pkgutil
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from oslo_log import log
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from oslo_utils import importutils
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LOG = log.getLogger(__name__)
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_BASE_MOD_PATH = 'monasca_events_api.policies.'
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def load_policy_modules():
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"""Load all modules that contain policies.
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Method iterates over modules of :py:mod:`monasca_events_api.policies`
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and imports only those that contain following methods:
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- list_rules
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"""
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for modname in _list_module_names():
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mod = importutils.import_module(_BASE_MOD_PATH + modname)
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if hasattr(mod, 'list_rules'):
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yield mod
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def _list_module_names():
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package_path = os.path.dirname(os.path.abspath(__file__))
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for _, modname, ispkg in pkgutil.iter_modules(path=[package_path]):
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if not (modname == "opts" and ispkg):
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yield modname
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def list_rules():
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"""List all policy modules rules.
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Goes through all policy modules and yields their rules
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"""
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all_rules = []
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for mod in load_policy_modules():
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rules = mod.list_rules()
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all_rules.extend(rules)
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return all_rules
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