Alarms and Events not showing up in UAExpert

[johannwesely]

Hello,

i want to implement the Alarms and Conditons profile to our server but i have troubles with simple events.
For Example i have code like this to fire an event, the sourceNode is for simplicity object/machines:

public void postEvent(String browseName, String displayName, NodeId sourceNode) {
   	BaseEventTypeNode eventNode = null;
   	try {
   		eventNode = (BaseEventTypeNode) server.getServer().getEventFactory().createEvent(new NodeId(1, UUID.randomUUID()),  //nodeId of EventObject
   				NodeIds.BaseEventType //Type Definition
   		);

   		eventNode.setBrowseName(new QualifiedName(1, browseName));
   		eventNode.setDisplayName(LocalizedText.english(displayName));
   		eventNode.setEventId(ByteString.of(new byte[] {0, 1, 2, 3}));
   		eventNode.setEventType(NodeIds.BaseEventType);
   		eventNode.setSourceNode(sourceNode);
   		eventNode.setSourceName(sourceNode.toParseableString());
   		eventNode.setTime(DateTime.now());
   		eventNode.setReceiveTime(DateTime.NULL_VALUE);
   		eventNode.setMessage(LocalizedText.english("event message!"));
   		eventNode.setSeverity(UShort.valueOf(1));

   		server.getServer().getEventNotifier().fire(eventNode);

   		eventNode.delete();
   	} catch (Exception e) {
   		this.loggerService.getLogger(this).error(e.getMessage(), e);
   	}
   }

but i dont see any events in UaExpert Event view what do i miss ?

[kevinherron]

Not sure... it works for me with the demo server:

---

I don't see much that is different: https://github.com/digitalpetri/opc-ua-demo-server/blob/f1ac8ebf7dc974e56a34e49871d2373840c537d5/src/main/java/com/digitalpetri/opcua/server/namespace/demo/DemoNamespace.java#L177-L212

[kevinherron]

Okay I think I see what is different... you are subscribed to one of your custom ObjectNodes, but you are firing from the Server's EventNotifier. You will need to create your own EventNotifier in the address space your Node belongs to and then hook it up in the on onEventItemsCreated etc... calls the same way OpcUaNamespace does:

milo/opc-ua-sdk/sdk-server/src/main/java/org/eclipse/milo/opcua/sdk/server/namespaces/OpcUaNamespace.java

Lines 131 to 152 in 28563c2

	@Override
	public void onEventItemsCreated(List<EventItem> eventItems) {
	eventItems.stream()
	.filter(MonitoredItem::isSamplingEnabled)
	.forEach(item -> server.getEventNotifier().register(item));
	}
	@Override
	public void onEventItemsModified(List<EventItem> eventItems) {
	for (EventItem item : eventItems) {
	if (item.isSamplingEnabled()) {
	server.getEventNotifier().register(item);
	} else {
	server.getEventNotifier().unregister(item);
	}
	}
	}
	@Override
	public void onEventItemsDeleted(List<EventItem> eventItems) {
	eventItems.forEach(item -> server.getEventNotifier().unregister(item));
	}

I.e. you need to fire events on a notifier that is actually hooked up to the EventItems.

[johannwesely]

Thanks now it works i needed to add onEventItemsCreated etc... to my parsed namespace.
But i have another question what are the refreshStartEventTypes and refreshEndEventType, because i dont fire them ?

[kevinherron]

UaExpert calls the ConditionRefresh method which fires these events.