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.github.dozermapper.core.DozerBeanMapperTest.java

@Test
public void shouldBeThreadSafe() throws Exception {
    Mapper mapper = DozerBeanMapperBuilder.create().withMappingFiles("mappings/testDozerBeanMapping.xml")
            .build();//ww w. j  a  v  a 2  s  . c  o  m

    final CountDownLatch latch = new CountDownLatch(THREAD_COUNT);

    for (int i = 0; i < THREAD_COUNT; i++) {
        new Thread(new Runnable() {
            public void run() {
                try {
                    mapper.map(new TestObject(), TestObjectPrime.class);
                } finally {
                    latch.countDown();
                }
            }
        }).start();

    }
    latch.await();
    assertTrue(exceptions.isEmpty());
}

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From source file:com.github.oscerd.component.cassandra.embedded.CassandraBaseTest.java

@Override
public void doPostSetup() {
    String id = RandomStringUtils.random(12, "0123456789abcdefghijklmnopqrstuvwxyz");
    fs = new Farsandra();
    fs.withVersion("2.0.3");
    fs.withCleanInstanceOnStart(true);/*  ww  w. j a v a2s . c o m*/
    fs.withInstanceName("target" + File.separator + id);
    fs.withCreateConfigurationFiles(true);
    fs.withHost("localhost");
    fs.withSeeds(Arrays.asList("localhost"));
    final CountDownLatch started = new CountDownLatch(1);
    fs.getManager().addOutLineHandler(new LineHandler() {
        @Override
        public void handleLine(String line) {
            if (line.contains("Listening for thrift clients...")) {
                started.countDown();
            }
        }
    });
    fs.getManager().addProcessHandler(new ProcessHandler() {
        @Override
        public void handleTermination(int exitValue) {
            started.countDown();
        }
    });
    fs.start();
    try {
        started.await();
        Thread.sleep(3000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    Cluster cluster = Cluster.builder().addContactPoint("127.0.0.1").build();
    Session session = cluster.connect();
    session.execute("CREATE KEYSPACE IF NOT EXISTS simplex WITH replication "
            + "= {'class':'SimpleStrategy', 'replication_factor':3};");
    session.execute("CREATE TABLE IF NOT EXISTS simplex.songs (" + "id int PRIMARY KEY," + "title text,"
            + "album text," + "artist text," + "tags set<text>," + "data blob," + ");");
    session.execute("CREATE INDEX IF NOT EXISTS album_idx ON simplex.songs(album);");
    session.execute("CREATE INDEX IF NOT EXISTS title_idx ON simplex.songs(title);");
    PreparedStatement statement = session.prepare(
            "INSERT INTO simplex.songs " + "(id, title, album, artist, tags) " + "VALUES (?, ?, ?, ?, ?);");
    BoundStatement boundStatement = new BoundStatement(statement);
    List<Song> songList = new ArrayList<Song>();
    prepareStartingData(songList);
    Iterator it = songList.iterator();
    while (it.hasNext()) {
        Song song = (Song) it.next();
        ResultSet res = session.execute(boundStatement.bind(song.getId(), song.getTitle(), song.getAlbum(),
                song.getArtist(), song.getTags()));
    }
    session.close();
    cluster.close();
    try {
        Thread.sleep(5 * 1000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

---

From source file:example.springdata.cassandra.people.ReactivePersonRepositoryIntegrationTest.java

/**
 * This sample performs a count, inserts data and performs a count again using reactive operator chaining.
 *///from  w  w w.java 2  s  . c om
@Test
public void shouldInsertAndCountData() throws Exception {

    CountDownLatch countDownLatch = new CountDownLatch(1);

    repository.count() //
            .doOnNext(System.out::println) //
            .thenMany(repository.saveAll(Flux.just(new Person("Hank", "Schrader", 43), //
                    new Person("Mike", "Ehrmantraut", 62)))) //
            .last() //
            .flatMap(v -> repository.count()) //
            .doOnNext(System.out::println) //
            .doOnTerminate(countDownLatch::countDown) //
            .subscribe();

    countDownLatch.await();
}

---

From source file:com.mobius.software.mqtt.performance.runner.ScenarioRunner.java

public void start() throws InterruptedException {
    List<RequestWorker> workers = new ArrayList<>();
    CountDownLatch latch = new CountDownLatch(requests.size());
    for (ScenarioRequest request : requests)
        workers.add(new RequestWorker(request, latch));

    ExecutorService service = Executors.newFixedThreadPool(workers.size());
    for (RequestWorker worker : workers)
        service.submit(worker);//from   w ww.  ja  v a  2  s  .  com
    latch.await();

    service.shutdownNow();
}

---

From source file:org.housecream.restmcu.it.resource.LatchBoardResource.java

public void resetLatch() {
    setLatch = new CountDownLatch(1);
}

---

From source file:com.baidu.oped.apm.profiler.errorTest.ConcurrentCall.java

@Test
public void test() throws IOException, InterruptedException {
    ((ThreadPoolExecutor) executorService).prestartAllCoreThreads();

    ThreadSafeClientConnManager cm = new ThreadSafeClientConnManager();
    cm.setMaxTotal(200);//from  w  w  w .jav  a 2  s.  c o m
    cm.setDefaultMaxPerRoute(200);

    final HttpClient client = new DefaultHttpClient(cm);
    int call = 400;
    final CountDownLatch latch = new CountDownLatch(call);
    for (int i = 0; i < call; i++) {
        executorService.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    String url = getUrl();
                    logger.info("execute {}", url);
                    final HttpGet httpGet = new HttpGet(url);
                    final HttpResponse execute = client.execute(httpGet);
                    execute.getEntity().getContent().close();

                } catch (ClientProtocolException e) {
                    e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
                } catch (IOException e) {
                    e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
                } finally {
                    latch.countDown();
                }
            }
        });
    }
    latch.await();
    executorService.shutdown();
    cm.shutdown();

}

---

From source file:com.netflix.curator.x.discovery.TestServiceCache.java

@Test
public void testInitialLoad() throws Exception {
    List<Closeable> closeables = Lists.newArrayList();
    TestingServer server = new TestingServer();
    closeables.add(server);/*w w w  .j  a v a2s. c o m*/
    try {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(),
                new RetryOneTime(1));
        closeables.add(client);
        client.start();

        ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class)
                .basePath("/discovery").client(client).build();
        closeables.add(discovery);
        discovery.start();

        ServiceCache<String> cache = discovery.serviceCacheBuilder().name("test").build();
        closeables.add(cache);

        final CountDownLatch latch = new CountDownLatch(3);
        ServiceCacheListener listener = new ServiceCacheListener() {
            @Override
            public void cacheChanged() {
                latch.countDown();
            }

            @Override
            public void stateChanged(CuratorFramework client, ConnectionState newState) {
            }
        };
        cache.addListener(listener);
        cache.start();

        ServiceInstance<String> instance1 = ServiceInstance.<String>builder().payload("test").name("test")
                .port(10064).build();
        ServiceInstance<String> instance2 = ServiceInstance.<String>builder().payload("test").name("test")
                .port(10065).build();
        ServiceInstance<String> instance3 = ServiceInstance.<String>builder().payload("test").name("test")
                .port(10066).build();
        discovery.registerService(instance1);
        discovery.registerService(instance2);
        discovery.registerService(instance3);

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

        ServiceCache<String> cache2 = discovery.serviceCacheBuilder().name("test").build();
        closeables.add(cache2);
        cache2.start();

        Assert.assertEquals(cache2.getInstances().size(), 3);
    } finally {
        Collections.reverse(closeables);
        for (Closeable c : closeables) {
            IOUtils.closeQuietly(c);
        }
    }
}

---

From source file:com.netflix.curator.framework.recipes.leader.TestLeaderLatch.java

@Test
public void testResetRace() throws Exception {
    Timing timing = new Timing();
    LeaderLatch latch = null;/*w  w  w  .j a v  a  2 s. co m*/
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(),
            timing.connection(), new RetryOneTime(1));
    try {
        client.start();
        latch = new LeaderLatch(client, PATH_NAME);

        latch.debugResetWaitLatch = new CountDownLatch(1);
        latch.start(); // will call reset()
        latch.reset(); // should not result in two nodes

        timing.sleepABit();

        latch.debugResetWaitLatch.countDown();

        timing.sleepABit();

        Assert.assertEquals(client.getChildren().forPath(PATH_NAME).size(), 1);
    } finally {
        IOUtils.closeQuietly(latch);
        IOUtils.closeQuietly(client);
    }
}

---

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

@Test
public void testGetVmAsync() throws IOException, InterruptedException {
    final SystemStatus systemStatus = new SystemStatus();
    systemStatus.setStatus(StatusType.READY);

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

    setupMocks(serialized, HttpStatus.SC_OK);

    SystemStatusApi systemStatusApi = new SystemStatusApi(restClient);

    final CountDownLatch latch = new CountDownLatch(1);

    systemStatusApi.getSystemStatusAsync(new FutureCallback<SystemStatus>() {
        @Override/*from  w  w  w.  j  a  v  a 2 s .  c  o m*/
        public void onSuccess(@Nullable SystemStatus result) {
            assertEquals(result, systemStatus);
            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.vmware.photon.controller.nsxclient.apis.FabricApiTest.java

@Test
public void testRegisterFabricNode() throws IOException, InterruptedException {
    final FabricNode mockResponse = new FabricNode();
    mockResponse.setId("id");
    mockResponse.setExternalId("externalId");
    setupMocks(objectMapper.writeValueAsString(mockResponse), HttpStatus.SC_CREATED);

    FabricApi client = new FabricApi(restClient);
    final CountDownLatch latch = new CountDownLatch(1);
    client.registerFabricNode(new FabricNodeCreateSpec(),
            new com.google.common.util.concurrent.FutureCallback<FabricNode>() {
                @Override//from w  w w  .  j  a va 2 s.c  o m
                public void onSuccess(FabricNode result) {
                    assertEquals(result, mockResponse);
                    latch.countDown();
                }

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

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

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