Example usage for java.util.concurrent CountDownLatch await

List of usage examples for java.util.concurrent CountDownLatch await

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Introduction

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

Prototype

public void await() throws InterruptedException

Source Link

Document

Causes the current thread to wait until the latch has counted down to zero, unless the thread is Thread#interrupt interrupted .

Usage

From source file:io.pivotal.ListApplicationsApplication.java

public static void main(String[] args) throws InterruptedException {
    ConfigurableApplicationContext applicationContext = SpringApplication.run(ListApplicationsApplication.class,
            args);/*from   w  w  w  .j  av  a 2  s . com*/
    CloudFoundryClient cloudFoundryClient = applicationContext.getBean(CloudFoundryClient.class);
    CloudFoundryOperations cloudFoundryOperations = applicationContext.getBean(CloudFoundryOperations.class);

    CountDownLatch latch = new CountDownLatch(1);

    cloudFoundryOperations.applications().list().flatMap(
            application -> Mono.just(application).and(getServiceInstances(cloudFoundryClient, application)))
            .map(function(FormattingUtils::formatApplication)).subscribe(System.out::println, t -> {
                t.printStackTrace();
                latch.countDown();
            }, latch::countDown);

    latch.await();
}

From source file:example.topic.Subscriber.java

public static void main(String[] args) {
    String url = BROKER_URL;
    if (args.length > 0) {
        url = args[0].trim();//from w  w w. jav  a  2  s  .c o  m
    }
    System.out
            .println("\nWaiting to receive messages... Either waiting for END message or press Ctrl+C to exit");
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
    Connection connection = null;
    final CountDownLatch latch = new CountDownLatch(1);

    try {

        connection = connectionFactory.createConnection();
        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        Destination destination = session.createTopic("test-topic");

        MessageConsumer consumer = session.createConsumer(destination);
        consumer.setMessageListener(new Subscriber(latch));

        latch.await();
        consumer.close();
        session.close();

    } catch (Exception e) {
        System.out.println("Caught exception!");
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                System.out.println("Could not close an open connection...");
            }
        }
    }
}

From source file:example.topic.durable.Subscriber.java

public static void main(String[] args) {
    String url = BROKER_URL;
    if (args.length > 0) {
        url = args[0].trim();//  w  w w .j a  v a2s. c  om
    }
    System.out
            .println("\nWaiting to receive messages... Either waiting for END message or press Ctrl+C to exit");
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
    Connection connection = null;
    final CountDownLatch latch = new CountDownLatch(1);

    try {

        connection = connectionFactory.createConnection();
        String clientId = System.getProperty("clientId");
        connection.setClientID(clientId);

        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        Topic destination = session.createTopic("test-topic");

        MessageConsumer consumer = session.createDurableSubscriber(destination, clientId);
        consumer.setMessageListener(new Subscriber(latch));

        latch.await();
        consumer.close();
        session.close();

    } catch (Exception e) {
        System.out.println("Caught exception!");
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                System.out.println("Could not close an open connection...");
            }
        }
    }
}

From source file:gobblin.test.TestWorker.java

@SuppressWarnings("all")
public static void main(String[] args) throws Exception {
    // Build command-line options
    Option configOption = OptionBuilder.withArgName("framework config file")
            .withDescription("Configuration properties file for the framework").hasArgs().withLongOpt("config")
            .create('c');
    Option jobConfigsOption = OptionBuilder.withArgName("job config files")
            .withDescription("Comma-separated list of job configuration files").hasArgs()
            .withLongOpt("jobconfigs").create('j');
    Option modeOption = OptionBuilder.withArgName("run mode")
            .withDescription("Test mode (schedule|run); 'schedule' means scheduling the jobs, "
                    + "whereas 'run' means running the jobs immediately")
            .hasArg().withLongOpt("mode").create('m');
    Option helpOption = OptionBuilder.withArgName("help").withDescription("Display usage information")
            .withLongOpt("help").create('h');

    Options options = new Options();
    options.addOption(configOption);/*from www . j  a  v  a2  s . c  om*/
    options.addOption(jobConfigsOption);
    options.addOption(modeOption);
    options.addOption(helpOption);

    // Parse command-line options
    CommandLineParser parser = new BasicParser();
    CommandLine cmd = parser.parse(options, args);

    if (cmd.hasOption('h')) {
        printUsage(options);
        System.exit(0);
    }

    // Start the test worker with the given configuration properties
    Configuration config = new PropertiesConfiguration(cmd.getOptionValue('c'));
    Properties properties = ConfigurationConverter.getProperties(config);
    TestWorker testWorker = new TestWorker(properties);
    testWorker.start();

    // Job running mode
    Mode mode = Mode.valueOf(cmd.getOptionValue('m').toUpperCase());

    // Get the list of job configuration files
    List<String> jobConfigFiles = Lists
            .newArrayList(Splitter.on(',').omitEmptyStrings().trimResults().split(cmd.getOptionValue('j')));

    CountDownLatch latch = new CountDownLatch(jobConfigFiles.size());
    for (String jobConfigFile : jobConfigFiles) {
        // For each job, load the job configuration, then run or schedule the job.
        Properties jobProps = new Properties();
        jobProps.load(new FileReader(jobConfigFile));
        jobProps.putAll(properties);
        testWorker.runJob(jobProps, mode, new TestJobListener(latch));
    }
    // Wait for all jobs to finish
    latch.await();

    testWorker.stop();
}

From source file:com.ok2c.lightmtp.examples.LocalMailClientTransportExample.java

public static void main(final String[] args) throws Exception {

    String text1 = "From: root\r\n" + "To: testuser1\r\n" + "Subject: test message 1\r\n" + "\r\n"
            + "This is a short test message 1\r\n";
    String text2 = "From: root\r\n" + "To: testuser1, testuser2\r\n" + "Subject: test message 2\r\n" + "\r\n"
            + "This is a short test message 2\r\n";
    String text3 = "From: root\r\n" + "To: testuser1, testuser2, testuser3\r\n" + "Subject: test message 3\r\n"
            + "\r\n" + "This is a short test message 3\r\n";

    DeliveryRequest request1 = new BasicDeliveryRequest("root", Arrays.asList("testuser1"),
            new ByteArraySource(text1.getBytes("US-ASCII")));

    DeliveryRequest request2 = new BasicDeliveryRequest("root", Arrays.asList("testuser1", "testuser2"),
            new ByteArraySource(text2.getBytes("US-ASCII")));

    DeliveryRequest request3 = new BasicDeliveryRequest("root",
            Arrays.asList("testuser1", "testuser2", "testuser3"),
            new ByteArraySource(text3.getBytes("US-ASCII")));

    Queue<DeliveryRequest> queue = new ConcurrentLinkedQueue<DeliveryRequest>();
    queue.add(request1);//www.  j  a  v a2 s  .c  o  m
    queue.add(request2);
    queue.add(request3);

    CountDownLatch messageCount = new CountDownLatch(queue.size());

    IOReactorConfig config = IOReactorConfig.custom().setIoThreadCount(1).build();

    MailClientTransport mua = new LocalMailClientTransport(config);
    mua.start(new MyDeliveryRequestHandler(messageCount));

    SessionEndpoint endpoint = new SessionEndpoint(new InetSocketAddress("localhost", 2525));

    SessionRequest sessionRequest = mua.connect(endpoint, queue, null);
    sessionRequest.waitFor();

    IOSession iosession = sessionRequest.getSession();
    if (iosession != null) {
        messageCount.await();
    } else {
        IOException ex = sessionRequest.getException();
        if (ex != null) {
            System.out.println("Connection failed: " + ex.getMessage());
        }
    }

    System.out.println("Shutting down I/O reactor");
    try {
        mua.shutdown();
    } catch (IOException ex) {
        mua.forceShutdown();
    }
    System.out.println("Done");
}

From source file:com.example.AsyncClientHttpExchangeFutureCallback.java

public static void main(String[] args) throws Exception {
    HttpAsyncClient httpclient = new DefaultHttpAsyncClient();
    httpclient.getParams().setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 3000)
            .setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 3000)
            .setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
            .setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true);

    httpclient.start();/*  w w  w. ja  va  2  s  . c o m*/
    try {
        HttpGet[] requests = new HttpGet[] { new HttpGet("http://www.apache.org/"),
                new HttpGet("https://www.verisign.com/"), new HttpGet("http://www.google.com/") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

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

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

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.shutdown();
    }
    System.out.println("Done");
}

From source file:com.boonya.http.async.examples.nio.client.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .build();//from w  w  w  . j ava 2 s.  co m
    try {
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://www.apache.org/"),
                new HttpGet("https://www.verisign.com/"), new HttpGet("http://www.google.com/") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

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

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

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

From source file:rg.apache.http.examples.async.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .setThreadFactory(new NamedThreadFactory("dddddddd")).build();
    try {//from w w  w .ja v  a 2s  . c o m
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://httpbin.org/ip"),
                new HttpGet("https://httpbin.org/ip"), new HttpGet("http://httpbin.org/headers") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

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

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

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

From source file:httpasync.QuickStart.java

public static void main(String[] args) throws Exception {
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
    try {//from   w w  w  .j  a  va2  s.c o  m
        // Start the client
        httpclient.start();

        // Execute request
        final HttpGet request1 = new HttpGet("http://www.apache.org/");
        Future<HttpResponse> future = httpclient.execute(request1, null);
        // and wait until response is received
        HttpResponse response1 = future.get();
        System.out.println(request1.getRequestLine() + "->" + response1.getStatusLine());

        // One most likely would want to use a callback for operation result
        final CountDownLatch latch1 = new CountDownLatch(1);
        final HttpGet request2 = new HttpGet("http://www.apache.org/");
        httpclient.execute(request2, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response2) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + response2.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch1.await();

        // In real world one most likely would want also want to stream
        // request and response body content
        final CountDownLatch latch2 = new CountDownLatch(1);
        final HttpGet request3 = new HttpGet("http://www.apache.org/");
        HttpAsyncRequestProducer producer3 = HttpAsyncMethods.create(request3);
        AsyncCharConsumer<HttpResponse> consumer3 = new AsyncCharConsumer<HttpResponse>() {

            HttpResponse response;

            @Override
            protected void onResponseReceived(final HttpResponse response) {
                this.response = response;
            }

            @Override
            protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException {
                // Do something useful
            }

            @Override
            protected void releaseResources() {
            }

            @Override
            protected HttpResponse buildResult(final HttpContext context) {
                return this.response;
            }

        };
        httpclient.execute(producer3, consumer3, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response3) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + response3.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch2.await();

    } finally {
        httpclient.close();
    }
}

From source file:com.boonya.http.async.examples.nio.client.AsyncClientEvictExpiredConnections.java

public static void main(String[] args) throws Exception {
    ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor();
    PoolingNHttpClientConnectionManager cm = new PoolingNHttpClientConnectionManager(ioReactor);
    cm.setMaxTotal(100);//from w  ww. ja  v a 2  s  . com
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(cm).build();
    try {
        httpclient.start();

        // create an array of URIs to perform GETs on
        String[] urisToGet = { "http://hc.apache.org/", "http://hc.apache.org/httpcomponents-core-ga/",
                "http://hc.apache.org/httpcomponents-client-ga/", };

        IdleConnectionEvictor connEvictor = new IdleConnectionEvictor(cm);
        connEvictor.start();

        final CountDownLatch latch = new CountDownLatch(urisToGet.length);
        for (final String uri : urisToGet) {
            final HttpGet httpget = new HttpGet(uri);
            httpclient.execute(httpget, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + "->" + response.getStatusLine());
                }

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

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

            });
        }
        latch.await();

        // Sleep 10 sec and let the connection evictor do its job
        Thread.sleep(20000);

        // Shut down the evictor thread
        connEvictor.shutdown();
        connEvictor.join();

    } finally {
        httpclient.close();
    }
}