old_contents: # -*- encoding: utf-8 -*-
  #
  # 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 re
  
  from keystonemiddleware import auth_token
  from oslo_log import log
  
  from ironic.common import exception
  from ironic.common.i18n import _
  from ironic.common import utils
  
  LOG = log.getLogger(__name__)
  
  
  class AuthTokenMiddleware(auth_token.AuthProtocol):
      """A wrapper on Keystone auth_token middleware.
  
      Does not perform verification of authentication tokens
      for public routes in the API.
  
      """
      def __init__(self, app, conf, public_api_routes=None):
          api_routes = [] if public_api_routes is None else public_api_routes
          self._ironic_app = app
          # TODO(mrda): Remove .xml and ensure that doesn't result in a
          # 401 Authentication Required instead of 404 Not Found
          route_pattern_tpl = '%s(\.json|\.xml)?$'
  
          try:
              self.public_api_routes = [re.compile(route_pattern_tpl % route_tpl)
                                        for route_tpl in api_routes]
          except re.error as e:
              raise exception.ConfigInvalid(
                  error_msg=_('Cannot compile public API routes: %s') % e)
  
          super(AuthTokenMiddleware, self).__init__(app, conf)
  
      def __call__(self, env, start_response):
          path = utils.safe_rstrip(env.get('PATH_INFO'), '/')
  
          # The information whether the API call is being performed against the
          # public API is required for some other components. Saving it to the
          # WSGI environment is reasonable thereby.
          env['is_public_api'] = any(map(lambda pattern: re.match(pattern, path),
                                         self.public_api_routes))
  
          if env['is_public_api']:
              return self._ironic_app(env, start_response)
  
          return super(AuthTokenMiddleware, self).__call__(env, start_response)
  
new_contents: # -*- encoding: utf-8 -*-
  #
  # 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 re
  
  from keystonemiddleware import auth_token
  
  from ironic.common import exception
  from ironic.common.i18n import _
  from ironic.common import utils
  
  
  class AuthTokenMiddleware(auth_token.AuthProtocol):
      """A wrapper on Keystone auth_token middleware.
  
      Does not perform verification of authentication tokens
      for public routes in the API.
  
      """
      def __init__(self, app, conf, public_api_routes=None):
          api_routes = [] if public_api_routes is None else public_api_routes
          self._ironic_app = app
          # TODO(mrda): Remove .xml and ensure that doesn't result in a
          # 401 Authentication Required instead of 404 Not Found
          route_pattern_tpl = '%s(\.json|\.xml)?$'
  
          try:
              self.public_api_routes = [re.compile(route_pattern_tpl % route_tpl)
                                        for route_tpl in api_routes]
          except re.error as e:
              raise exception.ConfigInvalid(
                  error_msg=_('Cannot compile public API routes: %s') % e)
  
          super(AuthTokenMiddleware, self).__init__(app, conf)
  
      def __call__(self, env, start_response):
          path = utils.safe_rstrip(env.get('PATH_INFO'), '/')
  
          # The information whether the API call is being performed against the
          # public API is required for some other components. Saving it to the
          # WSGI environment is reasonable thereby.
          env['is_public_api'] = any(map(lambda pattern: re.match(pattern, path),
                                         self.public_api_routes))
  
          if env['is_public_api']:
              return self._ironic_app(env, start_response)
  
          return super(AuthTokenMiddleware, self).__call__(env, start_response)
  
subject: Remove logging import unused