new_contents: # Copyright 2021 The Forseti Real Time Enforcer Authors. All rights reserved.
  #
  # 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.
  
  from urllib import request
  
  
  def get_metadata_by_path(path, version='v1'):
      url = f'http://metadata.google.internal/computeMetadata/{version}{path}'
      headers = {'Metadata-Flavor': 'Google'}
      req = request.Request(url, method='GET', headers=headers)
  
      with request.urlopen(req) as resp:
          return resp.read().decode('utf-8')
  
subject: add helper to pull data from the metadata service