FreeOpcUa / python-opcua

        mparams.QueueSize = queuesize

        mparams.DiscardOldest = True

        if mfilter:

            mparams.Filter = mfilter

        mir = ua.MonitoredItemCreateRequest()

        mir.ItemToMonitor = rv

        mir.MonitoringMode = ua.MonitoringMode.Reporting

        mir.RequestedParameters = mparams

        return mir

    def create_monitored_items(self, monitored_items):

        """

        low level method to have full control over subscription parameters

        Client handle must be unique since it will be used as key for internal registration of data

        """

        params = ua.CreateMonitoredItemsParameters()

            def __init__(self):

                super(CustomEvent, self).__init__(extended=True)

                self.EventType = node.nodeid

                curr_node = node

                while curr_node.nodeid.Identifier != parent_identifier:

                    for prop in curr_node.get_properties():

                        setattr(self, prop.get_browse_name().Name, prop.get_value())

                    parents = curr_node.get_referenced_nodes(refs=ua.ObjectIds.HasSubtype, direction=ua.BrowseDirection.Inverse, includesubtypes=False)

                    if len(parents) != 1: # Something went wrong

                        return None

                    curr_node = parents[0]