def _parse_file(file_path):
"""Parse the specified configuration file, returning a nested dict
of key/value pairs by section.
:param str file_path: The path of the file to read.
:rtype: dict
"""
file_path = path.abspath(path.expanduser(path.expandvars(file_path)))
LOGGER.debug('Reading file: %s', file_path)
if not path.exists(file_path):
raise exceptions.ConfigNotFound(path=file_path)
parser = configparser.RawConfigParser()
try:
parser.read(file_path)
except configparser.Error as error:
LOGGER.error('Error reading file: %s', error)
raise exceptions.ConfigParserError(path=file_path)
config = {}
for section in parser.sections():
config[section] = {}
for option in parser.options(section):
config[section][option] = parser.get(section, option)
return config
def get_region(profile):
"""Return the credentials from the configured ~/.aws/credentials file
following a similar behavior implemented by awscli and botocore.
:param str profile: Use the optional profile for getting settings
:return: region
:rtype: str
:raises: exceptions.ConfigNotFound
"""
region = os.getenv('AWS_DEFAULT_REGION', None)
if region:
return region
file_path = os.getenv('AWS_CONFIG_FILE', '~/.aws/config')
try:
config = _parse_file(file_path)
except exceptions.ConfigNotFound:
try:
return _request_region_from_instance()
except (httpclient.HTTPError, OSError) as error:
LOGGER.error('Error fetching from EC2 Instance Metadata (%s)',
error)
raise exceptions.ConfigNotFound(path=file_path)
if profile not in config and 'default' not in config:
raise exceptions.NoProfileError(path=file_path, profile=profile)
return (config.get(profile, {}).get('region')
or config.get('default', {}).get('region') or DEFAULT_REGION)
def test_raises_config_not_found_exception(self):
with mock.patch('tornado_aws.client.AsyncAWSClient.fetch') as fetch:
fetch.side_effect = aws_exceptions.ConfigNotFound(path='/test')
with self.assertRaises(exceptions.ConfigNotFound):
yield self.client.create_table(self.generic_table_definition())
def test_raises_config_not_found_exception(self):
self.create_table_expecting_raise(
dynamodb.ConfigNotFound,
aws_exceptions.ConfigNotFound(path='/test'))