107 lines
3.2 KiB
Python
107 lines
3.2 KiB
Python
# Copyright 2016 Mirantis, Inc.
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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 json
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import os
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from oslo_config import cfg
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from oslo_config import types
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# See http://docs.openstack.org/developer/oslo.config/types.html
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Boolean = types.Boolean
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Integer = types.Integer
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Float = types.Float
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String = types.String
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MultiString = types.MultiString
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List = types.List
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Dict = types.Dict
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IPAddress = types.IPAddress
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Hostname = types.Hostname
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URI = types.URI
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# JSON config types inspired by https://review.openstack.org/100521
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class JSONList(types.ConfigType):
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"""JSON list type.
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Decode JSON list from a string value to python list.
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"""
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def __init__(self, type_name='JSONList value'):
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super(JSONList, self).__init__(type_name=type_name)
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def __call__(self, value):
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if isinstance(value, list):
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return value
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try:
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result = json.loads(value)
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except ValueError:
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raise ValueError("No JSON object could be decoded from the value: "
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"{0}".format(value))
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if not isinstance(result, list):
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raise ValueError("Expected JSONList, but decoded '{0}' from the "
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"value: {1}".format(type(result), value))
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return result
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def __repr__(self):
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return 'JSONList'
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def __eq__(self, other):
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return self.__class__ == other.__class__
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def _formatter(self, value):
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return json.dumps(value)
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class JSONDict(types.ConfigType):
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"""JSON dictionary type.
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Decode JSON dictionary from a string value to python dict.
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"""
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def __init__(self, type_name='JSONDict value'):
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super(JSONDict, self).__init__(type_name=type_name)
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def __call__(self, value):
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if isinstance(value, dict):
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return value
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try:
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result = json.loads(value)
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except ValueError:
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raise ValueError("No JSON object could be decoded from the value: "
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"{0}".format(value))
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if not isinstance(result, dict):
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raise ValueError("Expected JSONDict, but decoded '{0}' from the "
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"value: {1}".format(type(result), value))
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return result
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def __repr__(self):
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return 'JSONDict'
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def __eq__(self, other):
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return self.__class__ == other.__class__
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def _formatter(self, value):
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return json.dumps(value)
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class Cfg(cfg.Opt):
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"""Wrapper for cfg.Opt class that reads default form evironment variables.
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"""
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def __init__(self, *args, **kwargs):
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super(Cfg, self).__init__(*args, **kwargs)
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env_var_name = self.name.upper()
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self.default = os.environ.get(env_var_name, self.default)
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