first working version with event reception in kanban

bus/src/main/java/de/srsoftware/umbrella/messagebus/Event.java

@@ -1,21 +1,26 @@
 /* © SRSoftware 2025 */
 package de.srsoftware.umbrella.messagebus;
 
-import de.srsoftware.umbrella.core.model.UmbrellaUser;
+import static de.srsoftware.umbrella.core.Constants.USER;
 
-public abstract class Event<Payload> {
+import de.srsoftware.tools.Mappable;
+import de.srsoftware.umbrella.core.model.UmbrellaUser;
+import java.util.Map;
+import org.json.JSONObject;
+
+public abstract class Event<Payload extends Mappable> {
 
 	public enum EventType {
 		CREATE,
 		UPDATE,
 		DELETE;
-	}
 
+	}
 	private UmbrellaUser initiator;
+
 	private String realm;
 	private Payload payload;
 	private EventType eventType;
-
 	public Event(UmbrellaUser initiator, String realm, Payload payload, EventType type){
 		this.initiator = initiator;
 		this.realm     = realm;
@@ -27,7 +32,21 @@ public abstract class Event<Payload> {
 		return eventType.toString();
 	}
 
-	public abstract String json();
+	public abstract boolean isIntendedFor(UmbrellaUser user);
+
+	public String json(){
+		Class<?> clazz = payload.getClass();
+		{ // get the highest superclass that is not object
+			Class<?> parent = clazz.getSuperclass();
+
+			while (parent != null && parent != Object.class) {
+				clazz = parent;
+				parent = clazz.getSuperclass();
+			}
+		}
+		var map = Map.of(USER,initiator.toMap(),clazz.getSimpleName().toLowerCase(),payload.toMap());
+		return new JSONObject(map).toString();
+	}
 
 	public Payload payload(){
 		return payload;

bus/src/main/java/de/srsoftware/umbrella/messagebus/EventQueue.java

@@ -5,7 +5,6 @@ import static de.srsoftware.umbrella.messagebus.MessageBus.messageBus;
 
 import java.net.InetSocketAddress;
 import java.util.LinkedList;
-import java.util.Objects;
 
 public class EventQueue extends LinkedList<Event> implements AutoCloseable, EventListener {
 

bus/src/main/java/de/srsoftware/umbrella/messagebus/MessageApi.java

@@ -4,6 +4,7 @@ package de.srsoftware.umbrella.messagebus;
 import static de.srsoftware.umbrella.core.Constants.*;
 import static de.srsoftware.umbrella.core.ModuleRegistry.userService;
 import static java.lang.System.Logger.Level.*;
+import static java.lang.Thread.sleep;
 import static java.net.HttpURLConnection.HTTP_OK;
 
 import com.sun.net.httpserver.HttpExchange;
@@ -13,7 +14,6 @@ import de.srsoftware.tools.SessionToken;
 import de.srsoftware.umbrella.core.BaseHandler;
 import de.srsoftware.umbrella.core.exceptions.UmbrellaException;
 import de.srsoftware.umbrella.core.model.Token;
-
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.InetSocketAddress;
@@ -42,14 +42,16 @@ public class MessageApi extends BaseHandler{
 			LOG.log(INFO,"{0} opened event stream.",addr);
 			var counter = 0;
 			while (!stream.checkError()){
-				Thread.sleep(100);
+				sleep(100);
 				if (eventQueue.isEmpty()){
 					if (++counter > 300) counter = sendBeacon(addr,stream);
 				} else {
-					var elem = eventQueue.remove(0);
-					LOG.log(DEBUG,"sending event to {0}",addr);
-					sendEvent(stream,elem);
-					counter = 0;
+					var event = eventQueue.removeFirst();
+					//if (event.isIntendedFor(user.get())) {
+						LOG.log(DEBUG, "sending event to {0}", addr);
+						sendEvent(stream, event);
+						counter = 0;
+					//}
 				}
 			}
 			LOG.log(INFO,"{0} disconnected from event stream.",addr);

bus/src/main/java/de/srsoftware/umbrella/messagebus/TaskEvent.java

@@ -5,15 +5,18 @@ import static de.srsoftware.umbrella.core.Constants.TASK;
 
 import de.srsoftware.umbrella.core.model.Task;
 import de.srsoftware.umbrella.core.model.UmbrellaUser;
-import org.json.JSONObject;
+
 
 public class TaskEvent extends Event<Task>{
 	public TaskEvent(UmbrellaUser initiator, Task task, EventType type){
-		super(initiator,TASK, task, type);
+		super(initiator, TASK, task, type);
 	}
 
 	@Override
-	public String json() {
-		return new JSONObject(payload().toMap()).toString();
+	public boolean isIntendedFor(UmbrellaUser user) {
+		for (var member : payload().members().values()){
+			if (member.user().equals(user)) return true;
+		}
+		return false;
 	}
 }