def _modify_monitored_item_request(self, new_queuesize, new_samp_time, mod_filter, client_handle):
req_params = ua.MonitoringParameters()
req_params.ClientHandle = client_handle
req_params.QueueSize = new_queuesize
req_params.Filter = mod_filter
req_params.SamplingInterval = new_samp_time
return req_params
def _make_monitored_item_request(self, node: Node, attr, mfilter, queuesize) -> ua.MonitoredItemCreateRequest:
rv = ua.ReadValueId()
rv.NodeId = node.nodeid
rv.AttributeId = attr
# rv.IndexRange //We leave it null, then the entire array is returned
mparams = ua.MonitoringParameters()
self._client_handle += 1
mparams.ClientHandle = self._client_handle
mparams.SamplingInterval = self.parameters.RequestedPublishingInterval
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