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#
# 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.
''' Provide a global configuration for the TOSCA translator'''
from six.moves import configparser
from toscaparser.utils.gettextutils import _
import translator.common.exception as exception
class ConfigProvider(object):
'''Global config proxy that wraps a ConfigParser object.
Allows for class based access to config values. Should only be initialized
once using the corresponding translator.conf file in the conf directory.
'''
# List that captures all of the conf file sections.
# Append any new sections to this list.
_sections = ['DEFAULT']
_translator_config = None
@classmethod
def _load_config(cls, conf_file):
'''Private method only to be called once from the __init__ module'''
cls._translator_config = configparser.ConfigParser()
try:
cls._translator_config.read(conf_file)
except configparser.ParsingError:
msg = _('Unable to parse translator.conf file.'
'Check to see that it exists in the conf directory.')
raise exception.ConfFileParseError(message=msg)
@classmethod
def get_value(cls, section, key):
try:
value = cls._translator_config.get(section, key)
except configparser.NoOptionError:
raise exception.ConfOptionNotDefined(key=key, section=section)
except configparser.NoSectionError:
raise exception.ConfSectionNotDefined(section=section)
return value
@classmethod
def get_all_values(cls):
values = []
for section in cls._sections:
try:
values.extend(cls._translator_config.items(section=section))
except configparser.NoOptionError:
raise exception.ConfSectionNotDefined(section=section)
return values
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