Examples with ServerSentEvent mantis.io.reactivex.netty.protocol.http.sse.ServerSentEvent used on opensource projects

Example 11 with ServerSentEvent

use of mantis.io.reactivex.netty.protocol.http.sse.ServerSentEvent in project mantis by Netflix.

the class HttpSourceImplTest method testStreamingErrorFromServerWillNotCompleteSource.

@Test
public void testStreamingErrorFromServerWillNotCompleteSource() throws Exception {
    int eventCount = 20;
    HttpSourceImpl<ByteBuf, ServerSentEvent, ServerContext<ServerSentEvent>> source = createStreamingSource("test/finiteStream?count=" + eventCount);
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicReference<Throwable> ex = new AtomicReference<>();
    final ConcurrentHashMap<ServerInfo, Set<String>> items = new ConcurrentHashMap<>();
    Observable.merge(source.call(new Context(), new Index(1, 1))).subscribe(new Subscriber<ServerContext<ServerSentEvent>>() {

        @Override
        public void onCompleted() {
            latch.countDown();
        }

        @Override
        public void onError(Throwable e) {
            ex.set(e);
            latch.countDown();
        }

        @Override
        public void onNext(ServerContext<ServerSentEvent> pair) {
            items.putIfAbsent(pair.getServer(), new HashSet<String>());
            items.get(pair.getServer()).add(pair.getValue().contentAsString());
        }
    });
    if (latch.await(5, TimeUnit.SECONDS)) {
        fail("The test case should not finish at all");
    }
    Assert.assertNull("The timeout error should be captured by the client so it does not surface to the source", ex.get());
    for (Server server : localServerProvider.getServers()) {
        ServerInfo serverInfo = toServerInfo(server);
        assertEquals("There should be no source level error", 0, sourceObserver.getErrorCount());
        assertEquals("There should be one connection attempt per server", 1, sourceObserver.getCount(serverInfo, EventType.CONNECTION_ATTEMPTED));
        assertEquals("There should be one established connection per server ", 1, sourceObserver.getCount(serverInfo, EventType.CONNECTION_ESTABLISHED));
        assertEquals("There should no subscribed server because of read timeout", 1, sourceObserver.getCount(serverInfo, EventType.SUBSCRIPTION_ESTABLISHED));
        assertEquals(String.format("There should be %d item before simulated error per server", eventCount), eventCount, items.get(serverInfo).size());
    }
}

Example 12 with ServerSentEvent

use of mantis.io.reactivex.netty.protocol.http.sse.ServerSentEvent in project mantis by Netflix.

the class HttpSourceImplTest method testRemovedServerWillBeUnsubscribed.

@Test
public void testRemovedServerWillBeUnsubscribed() throws Exception {
    HttpSourceImpl<ByteBuf, ServerSentEvent, ServerContext<ServerSentEvent>> source = createStreamingSource("test/infStream");
    final AtomicInteger counter = new AtomicInteger();
    final CountDownLatch done = new CountDownLatch(1);
    final ConcurrentHashMap<String, AtomicInteger> result = new ConcurrentHashMap<>();
    final ConcurrentMap<ServerInfo, CountDownLatch> serverRemovalLatch = new ConcurrentHashMap<>();
    for (Server server : localServerProvider.getServers()) {
        serverRemovalLatch.put(toServerInfo(server), new CountDownLatch(1));
    }
    Observable.merge(source.call(new Context(), new Index(1, 1))).doOnNext(new Action1<ServerContext<ServerSentEvent>>() {

        @Override
        public void call(ServerContext<ServerSentEvent> pair) {
            try {
                assertTrue(pair.getValue().contentAsString().contains("line"));
                counter.incrementAndGet();
                String msg = pair.getValue().contentAsString();
                result.putIfAbsent(msg, new AtomicInteger());
                result.get(msg).incrementAndGet();
            } finally {
                serverRemovalLatch.get(pair.getServer()).countDown();
            }
        }
    }).doOnError(new Action1<Throwable>() {

        @Override
        public void call(Throwable throwable) {
            fail("Unexpected failure: " + throwable);
        }
    }).doAfterTerminate(new Action0() {

        @Override
        public void call() {
            done.countDown();
        }
    }).subscribe();
    for (Server server : localServerProvider.getServers()) {
        serverRemovalLatch.get(toServerInfo(server)).await();
        localServerProvider.removeServer(toServerInfo(server));
    }
    long waitSeconds = 5;
    boolean timedout = !done.await(waitSeconds, TimeUnit.SECONDS);
    if (timedout) {
        fail(String.format("Waited at least %d seconds for the test to finish. Connection to at least one server is not unsubscribed.", waitSeconds));
    }
    assertTrue(String.format("Each server should emit at least one event before being canceled. Expected counter >= %d, actual counter: %d", localServerProvider.serverSize(), counter.get()), counter.get() >= localServerProvider.serverSize());
    for (Server server : localServerProvider.getServers()) {
        ServerInfo serverInfo = toServerInfo(server);
        assertEquals("There should be one completion per server", 1, sourceObserver.getCount(serverInfo, EventType.SOURCE_COMPLETED));
        assertEquals("There should be one un-subscription per server", 1, sourceObserver.getCount(serverInfo, EventType.CONNECTION_UNSUBSCRIBED));
        assertEquals("There should be no error", 0, sourceObserver.getCount(serverInfo, EventType.SUBSCRIPTION_FAILED));
        assertEquals("There should be one connection per server", 1, sourceObserver.getCount(serverInfo, EventType.SUBSCRIPTION_ESTABLISHED));
        assertEquals(String.format("There should be exactly one cancellation event per server for %d servers. ", localServerProvider.serverSize()), 1, sourceObserver.getCount(serverInfo, EventType.SUBSCRIPTION_CANCELED));
    }
    assertEquals("The source should emit exactly one completion event", 1, sourceObserver.getCompletionCount());
    assertEquals("The server should not have any error event", 0, sourceObserver.getErrorCount());
    Set<EventType> events = sourceObserver.getEvents();
    assertEquals("Each server should have one occurrence per event type except server failure event", (EventType.values().length - 1), events.size());
    for (EventType event : events) {
        assertEquals("Each event should be recorded exactly once", localServerProvider.serverSize(), sourceObserver.getEventCount(event));
    }
}