Reference Guide

import com.hp.util.dcord.CoordinationService;
import com.hp.sdn.demo.example.SampleMessage;
@Component
public class PubSubExample {
private CoordinationService coordinationService;
private PublishSubscribeService pubSubService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY, policy =
ReferencePolicy.DYNAMIC)
protected volatile TeamingService teamingSvc;
@Activate
protected void activate() {
coordinationService = teamingSvc.getCoordinationService();
pubSubService = coordinationService.getPublishSubscriberService();
}
public void subscribe() {
SampleMessageListener<SampleMessage> listener = new
SampleMessageListener<SampleMessage>();
pubSubService.subscribe(listener, SampleMessage.class);
}
public void publish(SampleMessage message) {
pubSubService.publish(message);
}
}
Message Listener Example:
SampleMessageListener.java
import com.hp.util.dcord.MessageEvent;
import com.hp.util.dcord.Subscriber;
import com.hp.sdn.demo.example.SampleMessage;
public class SampleMessageListener<M extends SampleMessage> implements
Subscriber<M> {
@Override
public void onMessage(MessageEvent<M> messageEvent) {
// Any action to be taken on receipt of a message notification.
// In this example, there is a simple print
System.out.println(“Message notification received”);
}
70