filepath = Path('data') / (self.name.lower() + '.json')

        try:

            with filepath.open(mode='w', encoding='utf-8') as f:

                json.dump(self.__dict__, f, cls=ServerEncoder)

        except Exception as e:

            raise e

    def update_weights(self):

        if self.type not in ('exit', 'relay'):

            raise NotImplementedError

        url = 'https://onionoo.torproject.org/weights?lookup={}'.format(

            self.fingerprint

        )

        data = requests.get(url)

        try:

            data.raise_for_status()

        except requests.HTTPError as e:

            raise e

        else:

            data = data.json()['relays'][0]

        self.mean_consensus_weight = calculate_weight(data['consensus_weight'])

        self.mean_exit_probability = calculate_weight(data['exit_probability'])

        self.mean_guard_probability = calculate_weight(

            data['guard_probability']

        )

        self.mean_middle_probability = calculate_weight(

            data['middle_probability']

        )

        self.mean_consensus_weight_fraction = calculate_weight(

            data['consensus_weight_fraction']

        )

    def check_status(self):

        now = datetime.utcnow()

        delta = now - self.last_updated

        if delta.seconds >= 3600:

            self.status = False

        elif delta.seconds >= 600:

            self.status = None

    try:

        country = gi4.country_name_by_addr(ip)

    except pygeoip.GeoIPError:

        country = gi6.country_name_by_addr(ip)

    data['country'] = country

    data['last_updated'] = strict_rfc3339.timestamp_to_rfc3339_utcoffset(

        datetime.utcnow().timestamp()

    )

    try:

        server = Server.from_dict(data)

    except Exception as e:

        current_app.logger.warning(' '.join([str(e), str(data)]))

        return str(e), 409, {'Content-Type': 'text/plain'}

    try:

        server.update_weights()

    except NotImplementedError:

        pass

    except requests.HTTPError as e:

        current_app.logger.error(str(e), exc_info=True)

        pass

    try:

        server.save()

    except Exception as e:

        current_app.logger.error(str(e))

        return str(e), 500, {'Content-Type': 'text/plain'}

    current_app.logger.info('Return result')

    return (

        server.json(), 201,

        {

            'Location': '/api/export/json/single?server_name={}'.format(

                server.name

            )

        }

    )

@api_page.route('/export', defaults={'server_type': 'all'})

@api_page.route(('/export/<any("all", "exit", "bridge", "relay", "single")'

                 ':server_type>'))

def export(server_type):

    current_app.logger.info('Handling export')