OpenStack Networking (Neutron)
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# Copyright 2015 Red Hat, Inc.
#
# 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 configparser
import os.path
import fixtures
from neutron.tests import base
class ConfigDict(base.AttributeDict):
def update(self, other):
self.convert_to_attr_dict(other)
super(ConfigDict, self).update(other)
def convert_to_attr_dict(self, other):
"""Convert nested dicts to AttributeDict.
:param other: dictionary to be directly modified.
"""
for key, value in other.items():
if isinstance(value, dict):
if not isinstance(value, base.AttributeDict):
other[key] = base.AttributeDict(value)
self.convert_to_attr_dict(value)
class ConfigFileFixture(fixtures.Fixture):
"""A fixture that knows how to translate configurations to files.
:param base_filename: the filename to use on disk.
:param config: a ConfigDict instance.
:param temp_dir: an existing temporary directory to use for storage.
"""
def __init__(self, base_filename, config, temp_dir):
super(ConfigFileFixture, self).__init__()
self.base_filename = base_filename
self.config = config
self.temp_dir = temp_dir
def _setUp(self):
self.write_config_to_configfile()
def write_config_to_configfile(self):
config_parser = self.dict_to_config_parser(self.config)
# Need to randomly generate a unique folder to put the file in
self.filename = os.path.join(self.temp_dir, self.base_filename)
with open(self.filename, 'w') as f:
config_parser.write(f)
f.flush()
def dict_to_config_parser(self, config_dict):
config_parser = configparser.ConfigParser()
for section, section_dict in config_dict.items():
if section != 'DEFAULT':
config_parser.add_section(section)
for option, value in section_dict.items():
try:
config_parser.set(section, option, value)
except TypeError as te:
raise TypeError(
"%(msg)s: section %(section)s, option %(option)s, "
"value: %(value)s" % {
'msg': te.args[0],
'section': section,
'option': option,
'value': value,
})
return config_parser