for root, _, files in os.walk(DATADIR):

        for f in files:

            if f.endswith('.json'):

                yield os.path.join(root, f)

def check_all_servers():

    for f in get_json_files():

        try:

            with open(f, encoding='utf-8') as file_object:

                data = json.load(file_object)

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

                date = datetime.strptime(data['last_updated'],

                                         DATE_FORMAT)

                now = datetime.utcnow()

                delta = now - date

                if delta.seconds >= 3600:

                    status = 'Offline'

                    status = 'Unkown'

                else:

                    status = None

                if status:

                    for key in ('server_status', 'tor_status'):

                        data[key] = status

                json.dump(data, file_object)

            continue

if __name__ == '__main__':

    check_all_servers()