# 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.

import glob
import os.path
import six
from stevedore import extension

from oslo_config import cfg
from oslo_log import log as logging

from senlin.common import exception
from senlin.common.i18n import _
from senlin.common.i18n import _LE
from senlin.common.i18n import _LI
from senlin.engine import parser
from senlin.engine import registry

LOG = logging.getLogger(__name__)

_environment = None


def global_env():
    global _environment

    if _environment is None:
        initialize()
    return _environment


class Environment(object):
    '''An object that contains all profiles, policies and customizations.'''

    SECTIONS = (
        PARAMETERS, CUSTOM_PROFILES, CUSTOM_POLICIES, CUSTOM_TRIGGERS,