text: # Copyright 2014 Google Inc. 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.
  
  """Utility functions common to data sources module."""
  
  __author__ = 'Mike Gainer (mgainer@google.com)'
  
  DATA_SOURCE_ACCESS_XSRF_ACTION = 'data_source_access'
  
  
  def generate_data_source_token(xsrf):
      """Generate an XSRF token used to access data source, and protect PII."""
      return xsrf.create_xsrf_token(DATA_SOURCE_ACCESS_XSRF_ACTION)
  