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"""
SoftLayer.config
~~~~~~~~~~~~~~~~
Handles different methods for loading configuration for the API bindings
:license: MIT, see LICENSE for more details.
"""
import configparser
import logging
import os
import os.path
LOGGER = logging.getLogger(__name__)
def get_client_settings_args(**kwargs):
"""Retrieve client settings from user-supplied arguments.
:param \\*\\*kwargs: Arguments that are passed into the client instance
"""
timeout = kwargs.get('timeout')
if timeout is not None:
timeout = float(timeout)
return {
'endpoint_url': kwargs.get('endpoint_url'),
'timeout': timeout,
'proxy': kwargs.get('proxy'),
'username': kwargs.get('username'),
'api_key': kwargs.get('api_key'),
}
def get_client_settings_env(**_):
"""Retrieve client settings from environment settings.
:param \\*\\*kwargs: Arguments that are passed into the client instance
"""
return {
'proxy': os.environ.get('https_proxy'),
'username': os.environ.get('SL_USERNAME'),
'api_key': os.environ.get('SL_API_KEY'),
}
def get_client_settings_config_file(**kwargs): # pylint: disable=inconsistent-return-statements
"""Retrieve client settings from the possible config file locations.
:param \\*\\*kwargs: Arguments that are passed into the client instance
"""
config_files = ['/etc/softlayer.conf', '~/.softlayer']
if kwargs.get('config_file'):
config_files.append(kwargs.get('config_file'))
config_files = [os.path.expanduser(f) for f in config_files]
config = configparser.RawConfigParser({
'username': '',
'api_key': '',
'endpoint_url': '',
'timeout': '0',
'proxy': '',
})
config.read(config_files)
if config.has_section('softlayer'):
return {
'endpoint_url': config.get('softlayer', 'endpoint_url'),
'timeout': config.getfloat('softlayer', 'timeout'),
'proxy': config.get('softlayer', 'proxy'),
'username': config.get('softlayer', 'username'),
'api_key': config.get('softlayer', 'api_key'),
}
SETTING_RESOLVERS = [get_client_settings_args,
get_client_settings_env,
get_client_settings_config_file]
def get_client_settings(**kwargs):
"""Parse client settings.
Parses settings from various input methods, preferring earlier values
to later ones. The settings currently come from explicit user arguments,
environmental variables and config files.
:param \\*\\*kwargs: Arguments that are passed into the client instance
"""
all_settings = {}
for setting_method in SETTING_RESOLVERS:
settings = setting_method(**kwargs)
if settings:
settings.update((k, v) for k, v in all_settings.items() if v)
all_settings = settings
return all_settings
def get_config(config_file=None):
"""Returns a parsed config object"""
if config_file is None:
config_file = '~/.softlayer'
config = configparser.ConfigParser()
config.read(os.path.expanduser(config_file))
# No configuration file found.
if not config.has_section('softlayer'):
config.add_section('softlayer')
config['softlayer']['username'] = ''
config['softlayer']['endpoint_url'] = ''
config['softlayer']['api_key'] = ''
config['softlayer']['timeout'] = '0'
return config
def write_config(configuration, config_file=None):
"""Writes a configuration to config_file"""
if config_file is None:
config_file = '~/.softlayer'
config_file = os.path.expanduser(config_file)
with open(config_file, 'w', encoding="utf-8") as file:
configuration.write(file)
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