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:com.netflix.curator.framework.recipes.queue.TestDistributedIdQueue.java

@Test
public void testDeletingWithLock() throws Exception {
    DistributedIdQueue<TestQueueItem> queue = null;
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    client.start();//from   w w w .ja va  2 s .  c  o m
    try {
        final CountDownLatch consumingLatch = new CountDownLatch(1);
        final CountDownLatch waitLatch = new CountDownLatch(1);
        QueueConsumer<TestQueueItem> consumer = new QueueConsumer<TestQueueItem>() {
            @Override
            public void consumeMessage(TestQueueItem message) throws Exception {
                consumingLatch.countDown();
                waitLatch.await();
            }

            @Override
            public void stateChanged(CuratorFramework client, ConnectionState newState) {
            }
        };

        queue = QueueBuilder.builder(client, consumer, serializer, QUEUE_PATH).lockPath("/locks")
                .buildIdQueue();
        queue.start();

        queue.put(new TestQueueItem("test"), "id");

        Assert.assertTrue(consumingLatch.await(10, TimeUnit.SECONDS)); // wait until consumer has it
        Assert.assertEquals(queue.remove("id"), 0);

        waitLatch.countDown();
    } finally {
        IOUtils.closeQuietly(queue);
        IOUtils.closeQuietly(client);
    }
}

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

@Test
public void testGetAuthStatusAsync() throws IOException, InterruptedException {
    final Auth auth = new Auth();

    ObjectMapper mapper = new ObjectMapper();
    String serialized = mapper.writeValueAsString(auth);

    setupMocks(serialized, HttpStatus.SC_OK);

    AuthApi authApi = new AuthApi(restClient);

    final CountDownLatch latch = new CountDownLatch(1);

    authApi.getAuthStatusAsync(new FutureCallback<Auth>() {
        @Override/*from  w  w  w .ja v a2s .  com*/
        public void onSuccess(@Nullable Auth result) {
            assertEquals(result, auth);
            latch.countDown();
        }

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

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From source file:com.gopivotal.cla.github.RateLimitingClientHttpRequestInterceptorTest.java

@Test
public void block() throws InterruptedException, IOException {
    CountDownLatch latch = new CountDownLatch(1);

    MockClientHttpRequest request = new MockClientHttpRequest();
    MockClientHttpResponse response = new MockClientHttpResponse(new byte[0], HttpStatus.OK);
    ClientHttpRequestExecution execution = mock(ClientHttpRequestExecution.class);

    request.setMethod(HttpMethod.GET);/*from w  w w.  j a va2  s .  c o  m*/
    request.setURI(URI.create("http://localhost"));

    when(execution.execute(request, new byte[0])).thenReturn(response);

    new Thread(new Trigger(this.interceptor, latch)).start();
    latch.await();

    this.interceptor.intercept(request, new byte[0], execution);
}

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From source file:ufo.remote.calls.benchmark.client.caller.resttemplate.AsyncRestTemplateTester.java

@Override
protected void startTest(final TesterResult result) {

    String url = "http://" + hostname + ":" + port + path;

    CountDownLatch latch = new CountDownLatch(result.totalCalls);
    AtomicInteger failures = new AtomicInteger(0);
    Executor executor = Executors.newFixedThreadPool(10);
    for (int i = 0; i < result.totalCalls; i++) {
        executor.execute(new Caller(url, result.message, latch, failures));
    }//from w ww .ja v  a2 s .c o  m

    try {
        latch.await();
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
    result.failures = failures.get();
}

---

From source file:com.netflix.curator.framework.recipes.cache.TestPathChildrenCacheInCluster.java

@Test
public void testServerLoss() throws Exception {
    Timing timing = new Timing();

    CuratorFramework client = null;//from   www  . ja v  a 2  s .  c o m
    PathChildrenCache cache = null;
    TestingCluster cluster = new TestingCluster(3);
    try {
        cluster.start();

        client = CuratorFrameworkFactory.newClient(cluster.getConnectString(), timing.session(),
                timing.connection(), new RetryOneTime(1));
        client.start();
        client.create().creatingParentsIfNeeded().forPath("/test");

        cache = new PathChildrenCache(client, "/test", false);
        cache.start();

        final CountDownLatch resetLatch = new CountDownLatch(1);
        final CountDownLatch reconnectLatch = new CountDownLatch(1);
        final AtomicReference<CountDownLatch> latch = new AtomicReference<CountDownLatch>(
                new CountDownLatch(3));
        cache.getListenable().addListener(new PathChildrenCacheListener() {
            @Override
            public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
                if (event.getType() == PathChildrenCacheEvent.Type.CONNECTION_SUSPENDED) {
                    resetLatch.countDown();
                } else if (event.getType() == PathChildrenCacheEvent.Type.CONNECTION_RECONNECTED) {
                    reconnectLatch.countDown();
                } else if (event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED) {
                    latch.get().countDown();
                }
            }
        });

        client.create().forPath("/test/one");
        client.create().forPath("/test/two");
        client.create().forPath("/test/three");

        Assert.assertTrue(latch.get().await(10, TimeUnit.SECONDS));

        InstanceSpec connectionInstance = cluster
                .findConnectionInstance(client.getZookeeperClient().getZooKeeper());
        cluster.killServer(connectionInstance);

        Assert.assertTrue(timing.awaitLatch(reconnectLatch));

        Assert.assertEquals(cache.getCurrentData().size(), 3);
    } finally {
        IOUtils.closeQuietly(cache);
        IOUtils.closeQuietly(client);
        IOUtils.closeQuietly(cluster);
    }
}

---

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

@Test
public void testGetAuthStatusAsync() throws IOException, InterruptedException {
    final Auth auth = new Auth();

    ObjectMapper mapper = new ObjectMapper();
    String serialized = mapper.writeValueAsString(auth);

    setupMocks(serialized, HttpStatus.SC_OK);

    AuthApi authApi = new AuthRestApi(restClient);

    final CountDownLatch latch = new CountDownLatch(1);

    authApi.getAuthStatusAsync(new FutureCallback<Auth>() {
        @Override/*from   w  w w  .j  a v  a 2  s.  c o m*/
        public void onSuccess(@Nullable Auth result) {
            assertEquals(result, auth);
            latch.countDown();
        }

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

---

From source file:com.microsoft.office.integration.test.EventsAsyncTestCase.java

@Override
protected void setUp() throws Exception {
    super.setUp();
    final ICalendars cals = Me.getCalendars();
    final CountDownLatch cdl = new CountDownLatch(1);
    // an empty iterator will be returned for any entity set unless you call fetch()
    Futures.addCallback(cals.fetchAsync(), new FutureCallback<Void>() {
        public void onFailure(Throwable t) {
            cdl.countDown();//from  w ww  .j ava 2 s .com
        }

        public void onSuccess(Void result) {
            Iterator<ICalendar> iterator = cals.iterator();
            if (iterator.hasNext()) {
                calendar = iterator.next();
            }
            cdl.countDown();
        }
    });

    cdl.await(60000, TimeUnit.MILLISECONDS);
    if (calendar == null) {
        fail("No calendar found");
    }
}

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From source file:alluxio.proxy.AlluxioProxyProcess.java

/**
 * Creates an instance of {@link AlluxioProxy}.
 */
AlluxioProxyProcess() {
    mStartTimeMs = System.currentTimeMillis();
    mLatch = new CountDownLatch(1);
}

---

From source file:com.netflix.curator.framework.recipes.locks.TestInterProcessReadWriteLock.java

@Test
public void testGetParticipantNodes() throws Exception {
    final int READERS = 20;
    final int WRITERS = 8;

    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {/*from  ww w .ja va  2s  .c  o  m*/
        client.start();

        final CountDownLatch latch = new CountDownLatch(READERS + WRITERS);
        final CountDownLatch readLatch = new CountDownLatch(READERS);
        final InterProcessReadWriteLock lock = new InterProcessReadWriteLock(client, "/lock");

        ExecutorService service = Executors.newCachedThreadPool();
        for (int i = 0; i < READERS; ++i) {
            service.submit(new Callable<Void>() {
                @Override
                public Void call() throws Exception {
                    lock.readLock().acquire();
                    latch.countDown();
                    readLatch.countDown();
                    return null;
                }
            });
        }
        for (int i = 0; i < WRITERS; ++i) {
            service.submit(new Callable<Void>() {
                @Override
                public Void call() throws Exception {
                    Assert.assertTrue(readLatch.await(10, TimeUnit.SECONDS));
                    latch.countDown(); // must be before as there can only be one writer
                    lock.writeLock().acquire();
                    return null;
                }
            });
        }

        Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));

        Collection<String> readers = lock.readLock().getParticipantNodes();
        Collection<String> writers = lock.writeLock().getParticipantNodes();

        Assert.assertEquals(readers.size(), READERS);
        Assert.assertEquals(writers.size(), WRITERS);
    } finally {
        IOUtils.closeQuietly(client);
    }
}

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From source file:com.cisco.oss.foundation.monitoring.service.TestMultiService.java

@Test
public void testManyServices() throws Exception {

    MonitoringAgentFactory.getInstance().register(
            new PropertiesConfiguration(TestMultiService.class.getResource("/config.properties").getPath()));

    ExecutorService threadPool = Executors.newFixedThreadPool(10);

    int numOfServices = 1234;

    final CountDownLatch latch = new CountDownLatch(numOfServices);

    final ServiceDetails serviceDetails = new ServiceDetails("default desc", "test", "junit", 12345);
    for (int i = 0; i < numOfServices; i++) {

        final int index = i;

        threadPool.execute(new Runnable() {

            @Override/*from   w ww  . ja  v a2 s . c o  m*/
            public void run() {
                String apiName = (index % 3) + "";
                CommunicationInfo.getCommunicationInfo().transactionStarted(serviceDetails, apiName, 125);
                try {
                    Thread.sleep(2);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                CommunicationInfo.getCommunicationInfo().transactionFinished(serviceDetails, apiName,
                        (index % 2 == 0) ? false : true, "kuku");
                latch.countDown();
            }
        });
    }

    try {
        latch.await();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    int numberOfThreads = Thread.getAllStackTraces().keySet().size();
    Assert.assertTrue(numberOfThreads <= 30);

    try {
        Thread.sleep(1500);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    Collection<Service> services = ServiceInfo.INSTANCE.getServices();
    System.out.println("services: " + services.size());

    for (Service service : services) {
        System.out.println("service: " + service + ". total: " + service.getTotalRequestCount());
    }

    Assert.assertEquals(3, services.size());

    //        try {
    //            Thread.sleep(60000);
    //        } catch (InterruptedException e) {
    //            e.printStackTrace();
    //        }

}

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