def file_config(filename=None):
"""Returns the config values found in a configuration file.
Args:
filename (str): the JSON file with the configuration values.
If ``None``, CONFIG_DEFAULT_PATH will be used.
Returns:
dict: The config values in the specified config file (or the
file at CONFIG_DEFAULT_PATH, if filename == None)
"""
logger.debug('On entry into file_config(), filename = {}'.format(filename))
if filename is None:
filename = CONFIG_DEFAULT_PATH
logger.debug('file_config() will try to open `{}`'.format(filename))
with open(filename) as f:
try:
config = json.load(f)
except ValueError as err:
raise exceptions.ConfigurationError(
'Failed to parse the JSON configuration from `{}`, {}'.format(
filename, err))
logger.info('Configuration loaded from `{}`'.format(filename))
return config
def _get_replica_set_name(conn):
"""Checks if the replSet option was enabled either through the command
line option or config file.
Note:
The setting we are looking for will have a different name depending
if it was set by the config file (`replSetName`) or by command
line arguments (`replSet`).
Returns:
The replica set name if enabled.
Raise:
:exc:`~ConfigurationError`: If mongod was not started with the
replSet option.
"""
options = conn.conn.admin.command('getCmdLineOpts')
try:
repl_opts = options['parsed']['replication']
return repl_opts.get('replSetName', None) or repl_opts['replSet']
except KeyError:
raise exceptions.ConfigurationError('mongod was not started with'
' the replSet option.')
