Example usage for java.util.concurrent CountDownLatch CountDownLatch

Introduction

In this page you can find the example usage for java.util.concurrent CountDownLatch CountDownLatch.

Prototype

public CountDownLatch(int count) 

Source Link

Document

Constructs a CountDownLatch initialized with the given count.

Usage

From source file:io.undertow.server.handlers.RequestLimitingHandlerTestCase.java

@Test
public void testRateLimitingHandler() throws ExecutionException, InterruptedException {
    latch.countDown();//from  www.  jav  a 2  s  .  c o  m
    latch = new CountDownLatch(1);
    ExecutorService executor = Executors.newFixedThreadPool(N_THREADS);
    try {
        final List<Future<?>> futures = new ArrayList<>();
        for (int i = 0; i < N_THREADS; ++i) {
            futures.add(executor.submit(new Callable<String>() {
                @Override
                public String call() {
                    TestHttpClient client = new TestHttpClient();
                    try {
                        HttpGet get = new HttpGet(DefaultServer.getDefaultServerURL());
                        HttpResponse result = client.execute(get);
                        Assert.assertEquals(StatusCodes.OK, result.getStatusLine().getStatusCode());
                        return HttpClientUtils.readResponse(result);
                    } catch (IOException e) {
                        throw new RuntimeException(e);
                    } finally {
                        client.getConnectionManager().shutdown();
                    }
                }
            }));
        }
        Thread.sleep(300);
        latch.countDown();
        for (Future<?> future : futures) {
            String res = (String) future.get();
            Assert.assertTrue(res, res.equals("1") || res.equals("2"));
        }
    } finally {
        executor.shutdown();
    }

}

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From source file:com.github.jguaneri.notifications.web.controller.NotificationController.java

/**
 * @since 1.0// w  ww.  ja v  a 2  s .c  o m
 * @param channel
 * @param resource
 */
@RequestMapping(value = "/subscribe/{channel}", method = RequestMethod.GET)
@ResponseBody
public void subscribe(@PathVariable("channel") final String channel, final AtmosphereResource resource,
        Principal principal) throws Exception {
    final CountDownLatch countDownLatch = new CountDownLatch(1);
    resource.addEventListener(new AtmosphereResourceEventListenerAdapter() {
        @Override
        public void onSuspend(AtmosphereResourceEvent event) {
            countDownLatch.countDown();
            LOGGER.info("Suspending Client..." + resource.uuid());
            resource.removeEventListener(this);
        }

        @Override
        public void onDisconnect(AtmosphereResourceEvent event) {
            LOGGER.info("Disconnecting Client..." + resource.uuid());
            super.onDisconnect(event);
        }

        @Override
        public void onBroadcast(AtmosphereResourceEvent event) {
            LOGGER.info("Client is broadcasting..." + resource.uuid());
            super.onBroadcast(event);
        }

    });

    if (AtmosphereResource.TRANSPORT.LONG_POLLING.equals(resource.transport())) {
        resource.resumeOnBroadcast(true).suspend(-1);
    } else {
        resource.suspend(-1);
    }

    try {
        countDownLatch.await();
    } catch (InterruptedException e) {
        LOGGER.error("Interrupted while trying to suspend resource {}", resource);
    }

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Subscribing to channel: {}", channel);
    }
    final Client client = new Client();
    client.setSubscriptionId(resource.uuid());
    channelService.subscribe(client, channel);
}

---

From source file:com.imagesleuth.imagesleuthclient2.Poster.java

public String Post(final File imgFile) throws IOException, ImageReadException, InterruptedException {

    final ArrayList<String> idArray = new ArrayList<>();

    final CountDownLatch latch = new CountDownLatch(1);

    try (CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultHeaders(harray)
            .setDefaultCredentialsProvider(credsProvider).setDefaultRequestConfig(requestConfig).build()) {
        httpclient.start();//from   ww w  . j a va  2s .c  o m
        final byte[] imageAsBytes = IOUtils.toByteArray(new FileInputStream(imgFile));
        final ImageInfo info = Imaging.getImageInfo(imageAsBytes);
        final HttpPost request = new HttpPost(urlval);
        String boundary = UUID.randomUUID().toString();
        HttpEntity mpEntity = MultipartEntityBuilder.create().setBoundary("-------------" + boundary)
                .addBinaryBody("file", imageAsBytes, ContentType.create(info.getMimeType()), imgFile.getName())
                .build();
        ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
        mpEntity.writeTo(baoStream);
        request.setHeader("Content-Type", "multipart/form-data;boundary=-------------" + boundary);
        //equest.setHeader("Content-Type", "multipart/form-data");                               
        NByteArrayEntity entity = new NByteArrayEntity(baoStream.toByteArray(),
                ContentType.MULTIPART_FORM_DATA);
        request.setEntity(entity);
        httpclient.execute(request, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response) {
                int code = response.getStatusLine().getStatusCode();
                //System.out.println(" response code: " + code + " for image: " + imgFile.getName());
                if (response.getEntity() != null && code == 202) {
                    StringWriter writer = new StringWriter();
                    try {
                        IOUtils.copy(response.getEntity().getContent(), writer);
                        idArray.add(writer.toString());
                        writer.close();
                        //System.out.println(" response id: " + id + " for image "+ img.getName()); 
                        latch.countDown();
                    } catch (Exception ex) {
                        ex.printStackTrace();
                    }
                } else {
                    System.out.println(" response code: " + code + " for image: " + imgFile.getName()
                            + " reason " + response.getStatusLine().getReasonPhrase());
                }
            }

            @Override
            public void failed(final Exception ex) {
                System.out.println(request.getRequestLine() + imgFile.getName() + "->" + ex);
                latch.countDown();
            }

            @Override
            public void cancelled() {
                System.out.println(request.getRequestLine() + " cancelled");
                latch.countDown();
            }

        });
        latch.await();
    }
    if (idArray.isEmpty()) {
        return null;
    } else {
        return idArray.get(0);
    }
}

---

From source file:DFSBenchmark.java

public DFSBenchmark(int threads, Path basePath) {
    this.threads = threads;
    this.baseDirPath = basePath;
    greenSignal = new CountDownLatch(threads);
    service = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(threads));
    reporter.enable(metrics, 3000, TimeUnit.MILLISECONDS);
}

---

From source file:hws.util.ZkDataMonitor.java

public ZkClient(String serverAddr, int sessionTimeout) throws IOException, InterruptedException {
    final CountDownLatch connectedSignal = new CountDownLatch(1);
    this.zk = new ZooKeeper(serverAddr, sessionTimeout, new Watcher() {
        @Override// w w  w .  ja va  2 s  . co m
        public void process(WatchedEvent event) {
            if (event.getState() == Watcher.Event.KeeperState.SyncConnected) {
                connectedSignal.countDown();
            }
        }
    });
    connectedSignal.await();
}

---

From source file:com.vmware.photon.controller.api.client.resource.FlavorApiTest.java

@Test
public void testCreateAsync() throws Exception {
    final Task responseTask = new Task();
    responseTask.setId("12345");
    responseTask.setState("QUEUED");
    responseTask.setQueuedTime(Date.from(Instant.now()));

    ObjectMapper mapper = new ObjectMapper();
    String serializedTask = mapper.writeValueAsString(responseTask);

    setupMocks(serializedTask, HttpStatus.SC_CREATED);

    FlavorApi flavorApi = new FlavorApi(restClient);

    final CountDownLatch latch = new CountDownLatch(1);

    flavorApi.createAsync(new FlavorCreateSpec(), new FutureCallback<Task>() {
        @Override//  w  w w  .  ja va2  s  .  c  o  m
        public void onSuccess(@Nullable Task result) {
            assertEquals(result, responseTask);
            latch.countDown();
        }

        @Override
        public void onFailure(Throwable t) {
            fail(t.toString());
            latch.countDown();
        }
    });

    assertThat(latch.await(COUNTDOWNLATCH_AWAIT_TIMEOUT, TimeUnit.SECONDS), is(true));
}

---

From source file:com.watchrabbit.executor.spring.AnnotationDiscoverTest.java

@Test
public void shouldCloseCircuit() throws Exception {
    try {//w  w w.  j  a  v a2  s .  c  o  m
        annotatedService.fastClose(() -> {
            throw new Exception();
        });
        failBecauseExceptionWasNotThrown(Exception.class);
    } catch (Exception ex) {
    }
    Sleep.untilTrue(Boolean.TRUE::booleanValue, 10, TimeUnit.MILLISECONDS);

    CountDownLatch latch = new CountDownLatch(1);
    annotatedService.fastClose(() -> {
        latch.countDown();
        return "ok";
    });
    assertThat(latch.getCount()).isEqualTo(0);
}

---

From source file:com.vmware.photon.controller.api.client.resource.FlavorRestApiTest.java

@Test
public void testCreateAsync() throws Exception {
    final Task responseTask = new Task();
    responseTask.setId("12345");
    responseTask.setState("QUEUED");
    responseTask.setQueuedTime(Date.from(Instant.now()));

    ObjectMapper mapper = new ObjectMapper();
    String serializedTask = mapper.writeValueAsString(responseTask);

    setupMocks(serializedTask, HttpStatus.SC_CREATED);

    FlavorApi flavorApi = new FlavorRestApi(restClient);

    final CountDownLatch latch = new CountDownLatch(1);

    flavorApi.createAsync(new FlavorCreateSpec(), new FutureCallback<Task>() {
        @Override//from ww  w  .j  a  va  2s  .c  om
        public void onSuccess(@Nullable Task result) {
            assertEquals(result, responseTask);
            latch.countDown();
        }

        @Override
        public void onFailure(Throwable t) {
            fail(t.toString());
            latch.countDown();
        }
    });

    assertThat(latch.await(COUNTDOWNLATCH_AWAIT_TIMEOUT, TimeUnit.SECONDS), is(true));
}

---

From source file:com.linkedin.pinot.core.query.scheduler.PrioritySchedulerTest.java

@AfterMethod
public void afterMethod() {
    useBarrier = false;
    startupBarrier = null;
    validationBarrier = null;
    numQueries = new CountDownLatch(1);
}

---

From source file:com.canoo.dolphin.client.impl.TestDolphinPlatformHttpClientConnector.java

@Test(expectedExceptions = DolphinRemotingException.class)
public void testBadResponse() {
    final CountDownLatch httpWasCalled = new CountDownLatch(1);

    HttpClient httpClient = new DefaultHttpClient() {

        @Override/*from   w  ww .  j av a 2s. com*/
        public <T> T execute(HttpUriRequest request, ResponseHandler<? extends T> responseHandler)
                throws IOException, ClientProtocolException {
            StatusLine statusLine = new StatusLine() {
                @Override
                public ProtocolVersion getProtocolVersion() {
                    return new ProtocolVersion("Dummy-Protocol", 1, 1);
                }

                @Override
                public int getStatusCode() {
                    return 500;
                }

                @Override
                public String getReasonPhrase() {
                    return "Internal Server Error";
                }
            };
            StringEntity entity = new StringEntity("failed");
            HttpResponse response = new BasicHttpResponse(statusLine);
            response.setEntity(entity);
            responseHandler.handleResponse(response);
            httpWasCalled.countDown();
            return (T) "[]";
        }
    };
    DolphinPlatformHttpClientConnector connector = new DolphinPlatformHttpClientConnector(new ClientDolphin(),
            new JsonCodec(), httpClient, getDummyURL(), new ForwardableCallback<>(),
            new DummyUiThreadHandler());

    connector.transmit(Collections.singletonList(new Command()));
}

---

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