Server side heartbeat listener?

Flow
1

Is there some point where you could register code to be executed when the server receives a heartbeat from the client? I’d like to update a timestamp in the DB when a session has been refreshed to I can clean up expired sessions later in case my “Session destroyed”-listener doesn’t get called for some reason. Or should I just take the reverse route and trust that the UI detach listener is called when the heartbeats are missed?

Thanks in advance,
Nik

2

Starting with Vaadin 14 you can add HeartBeatListeners: https://vaadin.com/api/platform/14.0.0.beta3/com/vaadin/flow/component/internal/UIInternals.html#addHeartbeatListener-com.vaadin.flow.component.internal.HeartbeatListener-

3

Ronny Edler:
Starting with Vaadin 14 you can add HeartBeatListeners: https://vaadin.com/api/platform/14.0.0.beta3/com/vaadin/flow/component/internal/UIInternals.html#addHeartbeatListener-com.vaadin.flow.component.internal.HeartbeatListener-

Ah. Cool. I’ll have to look into after my vacation, it should be released by then

4

Maybe it would be helpful for someone, how to add HeartbeatListener and few more listeners using one class (Spring version):

@Component
@ListenerPriority(Integer.MAX_VALUE - 2)
public class SecurityListener
		implements VaadinServiceInitListener, SessionDestroyListener, UIInitListener, BeforeEnterListener, HeartbeatListener {

	@Override
	public void serviceInit(ServiceInitEvent event) {
		event.getSource().addUIInitListener(this);
		event.getSource().addSessionDestroyListener(this);
	}

	@Override
	public void sessionDestroy(SessionDestroyEvent event) {
	}

	@Override
	public void uiInit(UIInitEvent event) {
		UI ui = event.getUI();
		ui.addBeforeEnterListener(this);
		ui.getInternals().addHeartbeatListener(this);
	}

	@Override
	public void beforeEnter(BeforeEnterEvent event) {
	}

	@Override
	public void heartbeat(HeartbeatEvent event) {
	}
}