public static void ConditionRefresh(Subscription subscription, TheOPCUARemoteServer serverForLogging)
{
bool refreshNeeded = false;
foreach (var monitoredItem in subscription.MonitoredItems)
{
if (monitoredItem.Handle is TheOPCEvent eventTag)
{
if (eventTag.RefreshNeeded)
{
refreshNeeded = true;
eventTag.RefreshNeeded = false;
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(serverForLogging.GetBaseThing()?.EngineName, $"Will trigger refresh for {serverForLogging.GetLogAddress()}, {eventTag.GetInfoForLog()}", eMsgLevel.l6_Debug));
}
else
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(serverForLogging.GetBaseThing()?.EngineName, $"Skipping condition refresh for {serverForLogging.GetLogAddress()}, {eventTag.GetInfoForLog()}", eMsgLevel.l6_Debug));
}
}
}
if (refreshNeeded)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(serverForLogging.GetBaseThing()?.EngineName, $"Refreshing conditions for {serverForLogging.GetLogAddress()}", eMsgLevel.l6_Debug));
try
{
subscription.ConditionRefresh();
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(serverForLogging.GetBaseThing()?.EngineName, $"Requested condition refresh for {serverForLogging.GetLogAddress()}", eMsgLevel.l6_Debug));
}
catch (Exception e)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(serverForLogging.GetBaseThing()?.EngineName, $"Internal error requesting condition request for {serverForLogging.GetLogAddress()}", eMsgLevel.l1_Error, TSM.L(eDEBUG_LEVELS.VERBOSE) ? e.Message : e.ToString()));
}
}
}
public virtual bool MonitorTag(Subscription subscription, out string error, bool bApplySubscription = true, bool bReadInitialValue = true)
{
error = null;
if (subscription == null || subscription.Session == null)
{
error = "Error: No OPC session.";
return(false);
}
lock (subscription.MonitoredItems)
{
if (MyMonitoredItem != null && !subscription.MonitoredItems.Contains(MyMonitoredItem))
{
// Monitored item was removed: recreate from scratch. Otherwise modify in place
MyMonitoredItem = null;
}
if (!this.IsSubscribedAsThing && !this.IsSubscribedAsProperty)
{
// Nothing to be monitored
error = "Error: Nothing to be monitored";
return(false);
}
if (TheThing.GetSafePropertyBool(MyBaseThing, "DontMonitor") || SampleRate < -1)
{
return(false);
}
// can only subscribe to local variables.
//if (TagRef == null || TagRef.NodeId.IsAbsolute || TagRef.NodeClass != NodeClass.Variable)
var resolvedNodeId = GetResolvedNodeIdName();
if (resolvedNodeId == null) // || NodeId.IsAbsolute || TagRef.NodeClass != NodeClass.Variable)
{
error = "Error: No or invalid NodeId";
return(false);
}
var previousMonitoredItem = subscription.MonitoredItems.FirstOrDefault(mi => mi.Handle == this || this.RefersToSamePropertyAndTag(mi.Handle));
if (previousMonitoredItem != null)
{
if (!previousMonitoredItem.StartNodeId.Equals(resolvedNodeId))
{
TheBaseAssets.MySYSLOG.WriteToLog(78201, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM("OPC", $"[{MyOPCServer.GetLogAddress()}] Internal Error - monitored item {previousMonitoredItem.StartNodeId} replaced with {resolvedNodeId}. Change will not take effect!", eMsgLevel.l4_Message));
}
MyMonitoredItem = previousMonitoredItem;
}
else
{
MyMonitoredItem = new MonitoredItem(subscription.DefaultItem);
}
//MyMonitoredItem.StartNodeId = (NodeId)TagRef.NodeId;
MyMonitoredItem.StartNodeId = resolvedNodeId;
MyMonitoredItem.AttributeId = Attributes.Value;
MyMonitoredItem.DisplayName = DisplayName; // Utils.Format("{0}", TagRef);
MyMonitoredItem.MonitoringMode = MonitoringMode.Reporting;
if ((!this.HistoryStartTime.HasValue || this.HistoryStartTime.Value == DateTimeOffset.MinValue) && MyOPCServer.DefHistoryStartTime != DateTimeOffset.MinValue)
{
this.HistoryStartTime = MyOPCServer.DefHistoryStartTime;
}
if (this.HistoryStartTime.HasValue && this.HistoryStartTime.Value != DateTimeOffset.MinValue)
{
MyMonitoredItem.Filter = new AggregateFilter()
{
StartTime = this.HistoryStartTime.Value.UtcDateTime,
ProcessingInterval = this.SampleRate,
AggregateType = ObjectIds.AggregateFunction_Interpolative,
};
MyMonitoredItem.QueueSize = uint.MaxValue;
MyMonitoredItem.SamplingInterval = 0;
}
else
{
DataChangeFilter filter = null;
// TODO Remove this special case: pass parameters for deadband filters and StatusValueTimestamp (this breaks P08!!!)
if (this.DeadbandFilterValue != 0)
{
filter = new DataChangeFilter
{
DeadbandType = (uint)(this.DeadbandFilterValue > 0 ? DeadbandType.Absolute : DeadbandType.Percent),
DeadbandValue = Math.Abs(this.DeadbandFilterValue)
};
}
if (ChangeTrigger != 1)
{
if (filter == null)
{
filter = new DataChangeFilter();
}
filter.Trigger = (DataChangeTrigger)ChangeTrigger;
}
if (filter != null)
{
MyMonitoredItem.Filter = filter;
}
MyMonitoredItem.SamplingInterval = SampleRate;
// For Events, the sample rate should be 0 (per spec), but is really ignored and thus should not affect the aggregate sample rate for the server
// All other sample rates are at least 50ms per other checks
if (SampleRate <= subscription.PublishingInterval * 2 && SampleRate > 0)
{
// 3.220: PublishingInterval is now independent of the sample rate: it only affects the frequency of the traffic from the server, not the content
//MyOPCServer.Subscription.PublishingInterval = SampleRate;
// Request the QueueSize to be 50 times the expected data points, so that no data is lost in normal operation
MyMonitoredItem.QueueSize = (uint)Math.Ceiling((((double)subscription.PublishingInterval) / SampleRate) * 50);
if (MyMonitoredItem.QueueSize < 50)
{
MyMonitoredItem.QueueSize = 50;
}
}
else
{
MyMonitoredItem.QueueSize = 50; // Request at least 50
}
}
MyMonitoredItem.DiscardOldest = true;
MyMonitoredItem.Notification -= MonitoredItem_Notification;
MyMonitoredItem.Notification += MonitoredItem_Notification;
TheOPCMonitoredItemBase previousTag = null;
if (previousMonitoredItem != null && previousMonitoredItem.Handle != this)
{
previousTag = previousMonitoredItem.Handle as TheOPCMonitoredItemBase;
if (previousTag != null)
{
previousTag.ReleaseMonitoredItem();
}
}
MyMonitoredItem.Handle = this;
InitializeMonitoredItem(previousTag);
if (previousMonitoredItem == null)
{
subscription.AddItem(MyMonitoredItem);
}
}
if (bApplySubscription)
{
#if OLD_UA
var items = subscription.ApplyChanges();
if (!items.Contains(MyMonitoredItem))
#else
subscription.ApplyChanges();
if (!subscription.MonitoredItems.Contains(MyMonitoredItem))
#endif
{
TheBaseAssets.MySYSLOG.WriteToLog(78201, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM("OPC", $"[{MyOPCServer.GetLogAddress()}] Internal Error: Monitored item not found after applying changes {GetNodeIdForLogs()}. Actual values: Sampling {MyMonitoredItem.Status.SamplingInterval}, Queue {MyMonitoredItem.Status.QueueSize}", eMsgLevel.l1_Error));
error = "Error: Monitored item not found after applying changes";
return(false);
}
else
{
TheBaseAssets.MySYSLOG.WriteToLog(78201, TSM.L(eDEBUG_LEVELS.VERBOSE) ? null : new TSM("OPC", $"[{MyOPCServer.GetLogAddress()}] Added monitored item {GetNodeIdForLogs()}. Actual values: Sampling {MyMonitoredItem.Status.SamplingInterval}, Queue {MyMonitoredItem.Status.QueueSize}", eMsgLevel.l4_Message));
}
}
if (ServiceResult.IsBad(MyMonitoredItem.Status.Error))
{
TheThing.SetSafePropertyString(MyBaseThing, "LastMessage", MyMonitoredItem.Status.Error.StatusCode.ToString());
TheBaseAssets.MySYSLOG.WriteToLog(78201, TSM.L(eDEBUG_LEVELS.FULLVERBOSE) ? null : new TSM("OPC", $"[{MyOPCServer.GetLogAddress()}] Error adding monitored item {GetNodeIdForLogs()}", eMsgLevel.l4_Message, MyMonitoredItem.Status.Error.ToString()));
error = "Error: " + MyMonitoredItem.Status.Error.ToString();
return(false);
}
else
{
MyOPCServer.RegisterEvent("DisconnectComplete", sinkDisconnected);
}
TheThing.SetSafePropertyBool(MyBaseThing, "IsActive", true);
return(true);
}