text: # Copyright 2014 Hewlett-Packard Development Company, L.P
  # 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 json
  
  from six.moves.urllib import parse
  
  from neutron.tests.tempest.common import service_client
  
  
  class RegionClientJSON(service_client.ServiceClient):
      api_version = "v3"
  
      def create_region(self, description, **kwargs):
          """Create region."""
          req_body = {
              'description': description,
          }
          if kwargs.get('parent_region_id'):
              req_body['parent_region_id'] = kwargs.get('parent_region_id')
          req_body = json.dumps({'region': req_body})
          if kwargs.get('unique_region_id'):
              resp, body = self.put(
                  'regions/%s' % kwargs.get('unique_region_id'), req_body)
          else:
              resp, body = self.post('regions', req_body)
          self.expected_success(201, resp.status)
          body = json.loads(body)
          return service_client.ResponseBody(resp, body['region'])
  
      def update_region(self, region_id, **kwargs):
          """Updates a region."""
          post_body = {}
          if 'description' in kwargs:
              post_body['description'] = kwargs.get('description')
          if 'parent_region_id' in kwargs:
              post_body['parent_region_id'] = kwargs.get('parent_region_id')
          post_body = json.dumps({'region': post_body})
          resp, body = self.patch('regions/%s' % region_id, post_body)
          self.expected_success(200, resp.status)
          body = json.loads(body)
          return service_client.ResponseBody(resp, body['region'])
  
      def get_region(self, region_id):
          """Get region."""
          url = 'regions/%s' % region_id
          resp, body = self.get(url)
          self.expected_success(200, resp.status)
          body = json.loads(body)
          return service_client.ResponseBody(resp, body['region'])
  
      def list_regions(self, params=None):
          """List regions."""
          url = 'regions'
          if params:
              url += '?%s' % parse.urlencode(params)
          resp, body = self.get(url)
          self.expected_success(200, resp.status)
          body = json.loads(body)
          return service_client.ResponseBodyList(resp, body['regions'])
  
      def delete_region(self, region_id):
          """Delete region."""
          resp, body = self.delete('regions/%s' % region_id)
          self.expected_success(204, resp.status)
          return service_client.ResponseBody(resp, body)
  