@classmethod

    def from_dict(cls, server):

        return cls.from_json(json.dumps(server))

    def json(self):

        return json.dumps(self.__dict__, cls=ServerEncoder)

    @staticmethod

    def check_json_format(server):

        try:

            validate(server)

        except jsonschema.ValidationError as e:

            raise e

        for key in ('ip', 'ip6'):

            if key in server:

                address = ipaddress.ip_address(server[key])

                if not check_ip(address):

                    raise ValueError('{} is not accepted!\n'.format(key))

        return True

    def save(self):

        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:

        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

                'Unallowed user {} tried to update {}!'.format(

                    username, data['name']

                )

            )

            return ('You are not allowed to update this server\n',

                    403, {'Content-Type': 'text/plain'})

    except KeyError:

        return abort(409)

    if 'ip' in data:

        ip = data['ip']

    elif 'ip6' in data:

        ip = data['ip6']

    else:

        ip = request.remote_addr

        try:

            temp_ip = ipaddress.ip_address(ip)

        except ipaddress.AddressValueError:

            return 'IP not allowed!\n', 403, {'Content-Type': 'text/plain'}

        else:

            if temp_ip.version == 4:

                data['ip'] = ip

            elif temp_ip.verison == 6:

                data['ip6'] = ip

    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')

    if server_type == 'single':

        server_name = request.args.get('server_name', None)

        if server_name is not None:

            server = single_server(server_name)

            if server:

                return server.json(), 200, {'Content-Type': 'application/json'}

            else:

                current_app.logger.warning('Server not found!')

                return ('Server not found!\n',

                        404, {'Content-Type': 'text/plain'})

        else:

            current_app.logger.warning('No server_name specified!')

            return ('No server_name specified!\n',

                    400, {'Content-Type': 'text/plain'})

    else:

        if server_type == 'all':

            current_app.logger.info('Getting all servers!')

            servers = [

                json.loads(

                    server.json()

                ) for server in all_servers()

            ]

        else: