Device component:

    # Topologically sort new_sub_devices so that controllers (those referenced by other

    # devices via their controller_id) come before the devices that depend on them.

    LOGGER.info('new_sub_devices.keys={:s}'.format(str(new_sub_devices.keys())))

    graph : Dict[str, Set[str]] = dict()

    for dev_uuid, sub_device in new_sub_devices.items():

        ctrl_uuid = get_device_controller_uuid(sub_device)

        LOGGER.info('dev_uuid={:s}, ctrl_uuid={:s}'.format(str(dev_uuid), str(ctrl_uuid)))

        if ctrl_uuid is None: continue # sub_device has no controller

        predecesors = graph.setdefault(dev_uuid, set())

        LOGGER.info('dev_uuid={:s} predecesors={:s}'.format(str(dev_uuid), str(predecesors)))

        predecesors.add(ctrl_uuid)

        LOGGER.info('graph={:s}'.format(str(graph)))

    LOGGER.info('final graph={:s}'.format(str(graph)))

    try:

        ts = TopologicalSorter(graph)

        LOGGER.exception(msg)

        errors.append(msg)

    LOGGER.info('sorted_sub_device_uuids={:s}'.format(str(sorted_sub_device_uuids)))

    return errors

def populate_endpoint_monitoring_resources(device_with_uuids : Device, monitoring_loops : MonitoringLoops) -> None: