Retrasmit sse using jax-rs jetty - jetty

Question

I try to re - transmit sse from an osgi plugin . I have this code and at the moment i can only read the sse from event source and print it out in the console correctly. The sse write part is not working properly and buffering instead. Is there any way to fix it and read and write from the same function?
Thanks in advance!
#ApplicationPath("MySensor")
public class MySensor extends ResourceConfig {
private static String sensorA = "smotion";
// private static String sensorB = "sdist";
// private static String sensorC = "slight";
private int id = 0;
private String idn = "";
public MySensor() {
super(MySensor.class, SseFeature.class);
}
// creates new broadcaster
private static SseBroadcaster BROADCASTER = new SseBroadcaster();
#MethodDescription(value = "sse")
#GET
#Consumes(SseFeature.SERVER_SENT_EVENTS)
#Produces(SseFeature.SERVER_SENT_EVENTS)
public EventOutput getServerSentEvents() {
id = id + 1;
idn = sensorA + " " + id;
BROADCASTER.broadcast(new OutboundEvent.Builder().data(String.class, idn).build());
// System.out.println(BROADCASTER.);
String LocalNetworkIP = "192.168.1.134";
EventOutput eventOutput = new EventOutput();
Client client = ClientBuilder.newBuilder().register(SseFeature.class).build();
WebTarget target = client.target("http://" + LocalNetworkIP + "/" + sensorA);
EventInput eventInput = target.request().get(EventInput.class);
while (!eventInput.isClosed()) {
InboundEvent inboundEvent = eventInput.read();
if (inboundEvent == null) {
break; // connection has been closed
}
try {
// handleevent
// inboundEvent.readData(String.class);
System.out.println(inboundEvent.readData(String.class));
OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
eventBuilder.name(inboundEvent.getName());
eventBuilder.data(inboundEvent.readData(String.class));
OutboundEvent event = eventBuilder.build();
eventOutput.write(event);
BROADCASTER.add(eventOutput);
} catch (IOException e) {
throw new RuntimeException("Error when writing the event.", e);
} catch (Exception e) {
e.printStackTrace();
} finally {
}
}
try {
eventOutput.close();
} catch (IOException ioClose) {
throw new RuntimeException("Error when closing the event output.", ioClose);
}
return eventOutput;
}

Answer 1

I Finally find it out!
#MethodDescription(value = "Return the Server Sent Event")
#GET
#Consumes(SseFeature.SERVER_SENT_EVENTS)
#Produces(SseFeature.SERVER_SENT_EVENTS)
public EventOutput getServerSentEvents() {
id = id + 1;
idn = sensorA + " " + id;
final EventOutput eventOutput = new EventOutput();
Client client = ClientBuilder.newBuilder().register(SseFeature.class).build();
WebTarget target = client.target("http://" + LocalNetworkIP + "/" + sensorA);
final EventInput eventInput = target.request().get(EventInput.class);
new Thread(new Runnable() {
#Override
public synchronized void run() {
try {
while (!eventInput.isClosed()) {
// Thread.sleep(500);
InboundEvent inboundEvent = eventInput.read();
if (inboundEvent == null) {
break; // connection has been closed
}
try {
// handleevent
// inboundEvent.readData(String.class);
System.out.println(inboundEvent.readData(String.class));
OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
eventBuilder.name(inboundEvent.getName());
eventBuilder.data(inboundEvent.readData(String.class));
OutboundEvent event = eventBuilder.build();
eventOutput.write(event);
} catch (IOException e) {
try { //extra
eventOutput.close(); //extra
eventInput.close(); //extra
} catch (IOException ioClose) { //extra
throw new RuntimeException("Error when closing the event output internal.", ioClose); //extra
} //extra
throw new RuntimeException("Error when writing or reading the event.", e);
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (!eventOutput.isClosed()) { //extra
eventOutput.close(); //extra
} //extra
if (!eventInput.isClosed()) { //extra
eventInput.close();
} //extra
} catch (IOException ioClose) {
throw new RuntimeException("Error when closing the event output.", ioClose);
}
}
}
}).start();
return eventOutput;
}
}