if status is not None:

        current_app.logger.error('%s is set to %s' % (server_name,

                                 status))

        if (current_status == 'Online' or current_status == 'Unknown') and \

           status == 'Offline':

            _send_mail(server_name, last_updated)

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

            data[key] = status

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

            json.dump(data, file_object)

    return data

def _load_single_server(filename):

    current_app.logger.info('Loading {}'.format(filename))

    try:

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

            server = json.load(f)

        return False

    server = _check_server(server)

    return server

def single_server(name):

    filename = ''.join(['data/', name, '.json'])

    return _load_single_server(filename)

def _get_json_files(root, files):

    for f in files:

        if f.endswith('.json'):

            yield os.path.join(root, f)

def all_servers():

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

        for f in _get_json_files(root, files):

            yield _load_single_server(f)