override protected void MonitoredItem_Notification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
try
{
var tEventTag = monitoredItem.Handle as TheOPCEvent;
if (tEventTag == null)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Internal error: invalid monitored item handle in Event", eMsgLevel.l1_Error, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
return;
}
var tEventHost = tEventTag.GetHostThing();
if (tEventHost == null)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Event host thing not found", eMsgLevel.l1_Error, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
return;
}
EventFieldList notification = e.NotificationValue as EventFieldList;
if (notification == null)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Internal error: notification is not an EventFieldList", eMsgLevel.l1_Error, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
return;
}
// check the type of event.
NodeId eventTypeId = ClientUtils.FindEventType(monitoredItem, notification);
if (MyOPCServer.EnableOPCDataLogging)
{
var logInfo = new Dictionary <string, object>
{
{ "ReceiveTime", DateTimeOffset.Now },
{ "TagId", DisplayName },
{ "EventTypeId", eventTypeId },
{ "Value", notification.EventFields.Aggregate("", (s, ef) => $"{s} [{ef.TypeInfo},{ef.Value}]") },
{ "Server", notification.Message.PublishTime },
{ "MonitoredItem", monitoredItem?.ClientHandle },
{ "SequenceNumber", notification.Message?.SequenceNumber },
};
TheOPCTag.LogOPCData(logInfo, MyOPCServer.GetLogAddress(), $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}");
}
// ignore unknown events.
if (NodeId.IsNull(eventTypeId))
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Unknown eventTypeId", eMsgLevel.l1_Error, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}: received {eventTypeId}"));
return;
}
EventFilter filter = monitoredItem.Status.Filter as EventFilter;
bool isRefreshEvent = false;
var eventData = new Dictionary <string, object>();
DateTimeOffset sourceTime = DateTimeOffset.Now;
string conditionId = null;
bool? bRetain = null;
int index = 0;
foreach (var field in filter.SelectClauses)
{
var value = index < notification?.EventFields.Count ? notification?.EventFields[index].Value : null;
if (value is ExtensionObject || value is ExtensionObject[])
{
value = MyOPCServer.DecodeExtensionObjectToJson(value, out var ignored);
}
var name = field?.BrowsePath?.Count > 0 ? field.BrowsePath[0].Name : null;
if (value is NodeId)
{
if (name == "EventType")
{
var eventType = value as NodeId;
if (eventType == Opc.Ua.ObjectTypeIds.RefreshStartEventType)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Received Refresh Start event", eMsgLevel.l4_Message, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
_currentConditionsByConditionId.Clear();
if (_bRefreshing)
{
// Two overlapping refresh starts received
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Received more than one Refresh Start event", eMsgLevel.l2_Warning, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
}
_bRefreshing = true;
_lastRefreshStartTime = DateTimeOffset.Now;
isRefreshEvent = true;
}
else if (eventType == Opc.Ua.ObjectTypeIds.RefreshEndEventType)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Received Refresh End event", eMsgLevel.l4_Message, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
if (!_bRefreshing)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Received Refresh End event without matching start event", eMsgLevel.l2_Warning, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
// refresh end received without refresh start
}
_bRefreshing = false;
isRefreshEvent = true;
if (EventInfo.AggregateRetainedConditions)
{
WriteAggregatedConditionsToProperty(tEventHost, TheCommonUtils.CDate(notification.Message.PublishTime));
}
}
}
value = value.ToString();
}
if (name == null)
{
if (field.TypeDefinitionId == Opc.Ua.ObjectTypeIds.BaseEventType)
{
name = "ConditionId";
}
}
if (name != null)
{
if (aliasMap.TryGetValue(index, out var alias))
{
eventData[alias] = value;
}
else
{
eventData[name] = value;
}
switch (name)
{
case "ConditionId":
conditionId = value?.ToString();
break;
case "Retain":
bRetain = TheCommonUtils.CBool(value);
break;
case "Time":
sourceTime = TheCommonUtils.CDate(value);
break;
}
}
index++;
}
if (!isRefreshEvent)
{
var eventInfoProperties = EventInfo.GetPropertyNames();
var filteredEventProps = EventInfo.Properties?.Count > 0 ? eventData.Where(pk => !requiredEventFields.Contains(pk.Key) || eventInfoProperties.Contains(pk.Key))
//.Select(kv =>
//{
// if (aliasMap.TryGetValue(kv.Key, out var alias))
// {
// return new KeyValuePair<string, object>(alias, kv.Value);
// }
// return kv;
//})
.ToDictionary(kv => kv.Key, kv => kv.Value) : eventData;
//if (_bRefreshing)
//{
// filteredEventProps["Refresh"] = true;
//}
if (!EventInfo.AggregateRetainedConditions)
{
// Raw events
// TODO avoid resending events due to a refresh?
var eventAsJson = TheCommonUtils.SerializeObjectToJSONString(filteredEventProps);
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.VERBOSE) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Received raw event {eventAsJson}", eMsgLevel.l6_Debug, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
tEventHost.GetBaseThing().SetProperty(DisplayName, eventAsJson, TheCommonUtils.CDate(notification.Message.PublishTime));
}
else
{
// Aggregated Condition State
if (conditionId != null)
{
if (bRetain == false)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Removed current event {conditionId}", eMsgLevel.l6_Debug, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
_currentConditionsByConditionId.RemoveNoCare(conditionId);
}
else
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.ESSENTIALS) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Added current event {conditionId}", eMsgLevel.l6_Debug, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}"));
_currentConditionsByConditionId[conditionId] = filteredEventProps;
}
if (!_bRefreshing)
{
WriteAggregatedConditionsToProperty(tEventHost, TheCommonUtils.CDate(notification.Message.PublishTime));
}
}
}
// Legacy format: do we still need to support this? Existing event support was not really usable...
//foreach (var eventField in eventData)
//{
// string propertyName;
// if (tEventHost is TheOPCUATagThing) // TODO Create a TheOPCUAEventThing
// {
// // If this is a dedicated event thing, use the original value name
// // TODO Is this really what we want to do or do we also want to use the full browsepath for dedicated event things?
// throw new NotImplementedException("Should never get here");
// //propertyName = field.BrowsePath[0].Name;
// }
// else
// {
// // This is an external, multi-event thing: use the browsepath to avoid collisions with properties from multiple events
// propertyName = DisplayName + "." + eventField.Key;
// }
// SetPropertyFromVariant(tEventHost, propertyName, eventField.Value, sourceTime);
//}
}
}
catch (Exception ex)
{
TheBaseAssets.MySYSLOG.WriteToLog(78102, TSM.L(eDEBUG_LEVELS.OFF) ? null : new TSM(MyOPCServer.GetBaseThing().EngineName, $"Internal error processing event notification", eMsgLevel.l1_Error, $"{DisplayName} {GetNodeIdForLogs()} {EventInfo.AggregateRetainedConditions}: {ex.ToString()}"));
}
}
