How to use the mqttwarn.util.Struct function in mqttwarn

def test_struct():
    data = {'hello': 'world'}
    struct = Struct(**data)
    assert struct.hello == 'world'
    assert struct.get('hello') == 'world'
    assert struct.get('unknown', default=42) == 42
    assert repr(struct) == ""
    assert struct.enum() == data

:param config: The configuration object
    :param name:   The name of the service plugin, e.g. "log" or "file"
    :param data:   The data to be converged into an appropriate item Struct object instance
    """

    # Bootstrap mqttwarn core
    # TODO: Optionally run w/o configuration.
    bootstrap(config=config)

    # Load designated service plugins
    load_services([name])
    service_logger_name = 'mqttwarn.services.{}'.format(name)
    srv = make_service(mqttc=None, name=service_logger_name)

    # Build a mimikry item instance for feeding to the service plugin
    item = Struct(**data)
    # TODO: Read configuration optionally from data.
    item.config = config.config('config:' + name)
    item.service = srv
    item.target = 'mqttwarn'
    item.data = {}        # FIXME

    # Launch plugin
    module = service_plugins[name]['module']
    response = module.plugin(srv, item)
    logger.info('Plugin response: {}'.format(response))

if HAVE_JINJA is False and context.get_config(section, 'template'):
            logger.warning("Templating not possible because Jinja2 is not installed")

        if HAVE_JINJA is True:
            template = context.get_config(section, 'template')
            if template is not None:
                try:
                    text = render_template(template, transform_data)
                    if text is not None:
                        item['message'] = text
                except Exception as e:
                    logger.warning("Cannot render `%s' template: %s" % (template, e))

        if item.get('message') is not None and len(item.get('message')) > 0:
            st = Struct(**item)
            notified = False
            logger.info("Invoking service plugin for `%s'" % service)
            try:
                # Fire the plugin in a separate thread and kill it if it doesn't return in 10s
                module = service_plugins[service]['module']
                service_logger_name = 'mqttwarn.services.{}'.format(service)
                srv = make_service(mqttc=mqttc, name=service_logger_name)
                notified = timeout(module.plugin, (srv, st))
            except Exception as e:
                logger.exception("Cannot invoke service for `%s'" % service)

            if not notified:
                logger.warning("Notification of %s for `%s' FAILED or TIMED OUT" % (service, item.get('topic')))
        else:
            logger.warning("Notification of %s for `%s' suppressed: text is empty" % (service, item.get('topic')))