cloudbase-init/cloudbaseinit/utils/serialization.py

37 lines
1.3 KiB
Python

# Copyright 2020 Cloudbase Solutions Srl
#
# 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 json
import yaml
class YamlParserConfigError(Exception):
"""Exception for Yaml parsing failures"""
pass
def parse_json_yaml(raw_data):
"""Parse data as json. Fallback to yaml if json parsing fails"""
try:
return json.loads(raw_data)
except (TypeError, ValueError, AttributeError,
json.decoder.JSONDecodeError):
loader = getattr(yaml, 'CLoader', yaml.Loader)
try:
return yaml.load(raw_data, Loader=loader)
except (TypeError, ValueError, AttributeError,
yaml.parser.ParserError, yaml.scanner.ScannerError):
raise YamlParserConfigError("Invalid yaml data provided.")