How to use

broadcast

method

in

org.glassfish.jersey.media.sse.SseBroadcaster

/**
 * Put a new message to the stream.
 *
 * The message will be broadcast to all registered SSE clients.
 *
 * @param message message to be broadcast.
 */
@PUT
@Consumes(MediaType.APPLICATION_JSON)
public void putMessage(final Message message) {
  LOGGER.info("--> Message received.");
  final OutboundEvent event = new OutboundEvent.Builder()
      .id(String.valueOf(nextMessageId.getAndIncrement()))
      .mediaType(MediaType.APPLICATION_JSON_TYPE)
      .data(Message.class, message)
      .build();
  broadcaster.broadcast(event);
}

  public void run() {
    try {
      if (latch != null) {
        // wait for all test EventSources to be registered
        latch.await(5, TimeUnit.SECONDS);
      }
      broadcaster.broadcast(
          new OutboundEvent.Builder().name("domain-progress").data(String.class, "starting domain " + id + " ...")
              .build());
      broadcaster.broadcast(new OutboundEvent.Builder().name("domain-progress").data(String.class, "50%").build());
      broadcaster.broadcast(new OutboundEvent.Builder().name("domain-progress").data(String.class, "60%").build());
      broadcaster.broadcast(new OutboundEvent.Builder().name("domain-progress").data(String.class, "70%").build());
      broadcaster.broadcast(new OutboundEvent.Builder().name("domain-progress").data(String.class, "99%").build());
      broadcaster.broadcast(new OutboundEvent.Builder().name("domain-progress").data(String.class, "done").build());
      broadcaster.closeAll();
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
  }
}

  @Override
  public void run() {
    broadcaster.broadcast(SseUtil.buildEvent(event));
  }
});

  @Override
  public void run() {
    broadcaster.broadcast(SseUtil.buildEvent(event));
  }
});

 public class TestServlet extends HttpServlet {

SseBroadcaster broadcaster = new SseBroadcaster();

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  Scanner scanner = new Scanner(req.getInputStream());
  StringBuilder sb = new StringBuilder();
  while(scanner.hasNextLine()) {
    sb.append(scanner.nextLine());
  }
  System.out.println("sb = " + sb);
  broadcaster.broadcast("message",sb.toString());
}

//http://cjihrig.com/blog/the-server-side-of-server-sent-events/
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  broadcaster.addListener(req);
}
}

  @Override
  public void update(Observable o, Object arg) {
    if (o instanceof StreamBroadcaster && arg != null) {
      EventEnvelope e = (EventEnvelope) arg;
      OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
      OutboundEvent event = eventBuilder
          .mediaType(MediaType.APPLICATION_JSON_TYPE)
          .id(e.eventId.orElse(null))
          .name(e.eventType)
          .data(e.eventData)
          .build();

      BROADCASTER.broadcast(event);
    }
  }
}

@Override
public void onEvent(SitemapEvent event) {
  OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
  OutboundEvent outboundEvent = eventBuilder.name("event").mediaType(MediaType.APPLICATION_JSON_TYPE).data(event)
      .build();
  broadcaster.broadcast(outboundEvent);
}

@Override
public void onEvent(SitemapEvent event) {
  OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
  OutboundEvent outboundEvent = eventBuilder.name("event").mediaType(MediaType.APPLICATION_JSON_TYPE).data(event)
      .build();
  broadcaster.broadcast(outboundEvent);
}

broadcaster.broadcast(event); // invokes eventOutput.write(event);