old_contents: # Copyright 2016 NEC Corporation.
  # 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.
  import base64
  
  import jsonschema
  from oslo_utils import timeutils
  import six
  
  # JSON Schema validator and format checker used for JSON Schema validation
  JSONSCHEMA_VALIDATOR = jsonschema.Draft4Validator
  FORMAT_CHECKER = jsonschema.draft4_format_checker
  
  
  # NOTE(gmann): Add customized format checker for 'date-time' format because:
  # 1. jsonschema needs strict_rfc3339 or isodate module to be installed
  #    for proper date-time checking as per rfc3339.
  # 2. Nova or other OpenStack components handle the date time format as
  #    ISO 8601 which is defined in oslo_utils.timeutils
  # so this checker will validate the date-time as defined in
  # oslo_utils.timeutils
  @FORMAT_CHECKER.checks('iso8601-date-time')
  def _validate_datetime_format(instance):
      try:
          if isinstance(instance, jsonschema.compat.str_types):
              timeutils.parse_isotime(instance)
      except ValueError:
          return False
      else:
          return True
  
  
  @jsonschema.FormatChecker.cls_checks('base64')
  def _validate_base64_format(instance):
      try:
          if isinstance(instance, six.text_type):
              instance = instance.encode('utf-8')
          base64.decodestring(instance)
      except base64.binascii.Error:
          return False
      except TypeError:
          # The name must be string type. If instance isn't string type, the
          # TypeError will be raised at here.
          return False
  
      return True
  
new_contents: # Copyright 2016 NEC Corporation.
  # 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.
  import jsonschema
  from oslo_serialization import base64
  from oslo_utils import timeutils
  import six
  
  # JSON Schema validator and format checker used for JSON Schema validation
  JSONSCHEMA_VALIDATOR = jsonschema.Draft4Validator
  FORMAT_CHECKER = jsonschema.draft4_format_checker
  
  
  # NOTE(gmann): Add customized format checker for 'date-time' format because:
  # 1. jsonschema needs strict_rfc3339 or isodate module to be installed
  #    for proper date-time checking as per rfc3339.
  # 2. Nova or other OpenStack components handle the date time format as
  #    ISO 8601 which is defined in oslo_utils.timeutils
  # so this checker will validate the date-time as defined in
  # oslo_utils.timeutils
  @FORMAT_CHECKER.checks('iso8601-date-time')
  def _validate_datetime_format(instance):
      try:
          if isinstance(instance, jsonschema.compat.str_types):
              timeutils.parse_isotime(instance)
      except ValueError:
          return False
      else:
          return True
  
  
  @jsonschema.FormatChecker.cls_checks('base64')
  def _validate_base64_format(instance):
      try:
          if isinstance(instance, six.text_type):
              instance = instance.encode('utf-8')
          base64.decode_as_bytes(instance)
      except TypeError:
          # The name must be string type. If instance isn't string type, the
          # TypeError will be raised at here.
          return False
  
      return True
  
subject: Replace deprecated "decodestring"