def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def test_conf_inline_ratelimiting(self):
        with mock.patch.object(memcache, 'ConfigParser', get_config_parser()):
            app = memcache.MemcacheMiddleware(
                FakeApp(),
                {'error_suppression_limit': '5',
                 'error_suppression_interval': '2.5'})
        self.assertEqual(app.memcache._error_limit_count, 5)
        self.assertEqual(app.memcache._error_limit_time, 2.5)
        self.assertEqual(app.memcache._error_limit_duration, 2.5)