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#
# Copyright (C) 2018 The Android Open Source Project
#
# 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 logging
import os
# In fact, all fields are required. The fields listed below are used
# to check whether the config class has been properly initialized before
# generating config file
REQUIRED_KEYS = [
'ssh_public_key_path',
'ssh_private_key_path',
'project',
'client_id',
'client_secret'
]
class ACloudConfig(object):
'''For ACloud configuration file operations.
Attributes:
configs: dict of string:string, configuration keys and values.
has_error: bool, whether error occurred.
'''
configs = {}
has_error = False
def Validate(self):
'''Validate config class.
Check whether required fields has been set.
Check whether loading configuration file is success.
Returns:
bool, True if validated.
'''
for key in REQUIRED_KEYS:
if key not in self.configs:
logging.error('Required key %s is not '
'set for acloud config' % key)
return False
return not self.has_error
def Load(self, file_path):
'''Load configs from a file.
Args:
file_path: string, path to config file.
'''
if not os.path.isfile(file_path):
logging.error('Failed to read acloud config file %s' % file_path)
self.has_error = True
return
separator = ': "'
with open(file_path, 'r') as f:
for line in f:
line = line.strip()
# Skip empty line and comments
if not line or line.startswith('#'):
continue
idx = line.find(separator)
if idx < 1 or not line.endswith('"'):
logging.error('Error parsing line %s from '
'acloud config file %s' % (line, file_path))
self.has_error = True
return
key = line[:idx]
val = line[len(separator) + idx : -1]
self.configs[key] = val
def Save(self, file_path):
'''Save config to a file.
Args:
file_path: string, path to config file.
'''
separator = ':'
with open(file_path, 'w') as f:
for key in self.configs:
f.write(key + separator + '"%s"' % self.configs[key])
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