Examples of org.glassfish.jersey.media.sse.EventInput

org.glassfish.jersey.media.sse.EventInput
Inbound Server-Sent Events channel. The input channel lets you serially read & consume SSE events as they arrive. @author Marek Potociar (marek.potociar at oracle.com)

    @Test
    public void testSSE() throws IOException, InterruptedException, DeploymentException, ExecutionException {
        final Client client = ClientBuilder.newBuilder().register(SseFeature.class).build();
        Response resp = client.target("http://localhost:8080/ssechannel").request().get();
        NewCookie session = resp.getCookies().get(JSESSIONID);
        final EventInput eventInput = resp.readEntity(EventInput.class);
        final SettableFuture<String> res = new SettableFuture<>();
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (!eventInput.isClosed() && !res.isDone()) {
                    final InboundEvent inboundEvent = eventInput.read();
                    if (inboundEvent == null)
                        break;
                    res.set(inboundEvent.readData(String.class));
                }
            }

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            final Future<List<String>> futureMessages =
                    executor.submit(new Callable<List<String>>() {


                        @Override
                        public List<String> call() throws Exception {
                            final EventInput eventInput = target(App.ROOT_PATH).register(SseFeature.class)
                                    .request().get(EventInput.class);


                            startLatch.countDown();


                            final List<String> messages = new ArrayList<String>(MAX_MESSAGES);
                            try {
                                for (int i = 0; i < MAX_MESSAGES; i++) {
                                    InboundEvent event = eventInput.read();
                                    messages.add(event.readData());
                                }
                            } finally {
                                if (eventInput != null) {
                                    eventInput.close();
                                }
                            }


                            return messages;
                        }

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        r = target().path("test/closed-single").request().header("Connection", "close").get();
        assertTrue(r.readEntity(String.class).contains("closed"));


        //


        EventInput input;
        input = target().path("test/closed-single").request().header("Connection", "close").get(EventInput.class);
        assertEquals("closed", input.read().readData());
        assertEquals(null, input.read());
        assertTrue(input.isClosed());


        input = target().path("test/closed-empty").request().header("Connection", "close").get(EventInput.class);
        assertEquals(null, input.read());
        assertTrue(input.isClosed());
    }

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         * Thus setting the "Connection: close" HTTP header on all requests.
         */
        Response r;
        r = target().path("test/charset").request().header("Connection", "close").get();
        assertTrue(r.getMediaType().getParameters().get("charset").equalsIgnoreCase("utf-8"));
        final EventInput eventInput = r.readEntity(EventInput.class);
        String eventData = eventInput.read().readData();
        assertEquals("charset", eventData);
        eventInput.close();
    }

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