Example usage for java.util.concurrent BlockingQueue put

Introduction

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

Prototype

void put(E e) throws InterruptedException;

Source Link

Document

Inserts the specified element into this queue, waiting if necessary for space to become available.

Usage

From source file:DelayedJob.java

public static void main(String[] args) throws InterruptedException {
    BlockingQueue<DelayedJob> queue = new DelayQueue<>();
    Instant now = Instant.now();

    queue.put(new DelayedJob("A", now.plusSeconds(9)));
    queue.put(new DelayedJob("B", now.plusSeconds(3)));
    queue.put(new DelayedJob("C", now.plusSeconds(6)));
    queue.put(new DelayedJob("D", now.plusSeconds(1)));

    while (queue.size() > 0) {
        System.out.println("started...");
        DelayedJob job = queue.take();/*from  w  w  w .ja va2  s .  com*/
        System.out.println("Job: " + job);
    }
    System.out.println("Finished.");
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    int capacity = 10;
    BlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(capacity);

    int numWorkers = 2;
    Worker[] workers = new Worker[numWorkers];
    for (int i = 0; i < workers.length; i++) {
        workers[i] = new Worker(queue);
        workers[i].start();/*from   w  w w. j a  v a2s  .  c  om*/
    }

    for (int i = 0; i < 100; i++) {
        queue.put(i);
    }
}

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From source file:com.blacklocus.qs.worker.RandomStdoutTasksExample.java

public static void main(String[] args) {
    // Mock our source of tasks.
    final BlockingQueue<QSTaskModel> workQueue = new SynchronousQueue<QSTaskModel>();

    // Generates tasks
    new Thread(new ExceptingRunnable() {
        @Override// ww w  .j a  v a 2  s.c  o m
        protected void go() throws Exception {
            while (true) {
                workQueue.put(new QSTaskModel(null, "" + RandomUtils.nextInt(), "stdout", 1,
                        new Params(RandomStringUtils.randomAscii(RandomUtils.nextInt(32)))));
            }
        }
    }).start();

    // All this worker does is log an extra message describing the length of the "message" param.
    QSWorker<Params> worker = new AbstractQSWorker<Params>() {
        @Override
        public String getHandlerName() {
            // This identifies the type of task this worker can handle. In our task generator above, the
            // tasks are created with the same handler identifier "stdout".
            return "stdout";
        }

        @Override
        public TaskKit<Params> convert(TaskKitFactory<Params> factory) throws Exception {
            return factory.newTaskKit(Params.class);
        }

        @Override
        public Object process(TaskKit<Params> kit) throws Exception {
            String msg = kit.params().message;
            kit.log(msg + " is " + msg.length() + " characters long");
            return null;
        }
    };

    QSAssembly.newBuilder()

            // The source of work.
            .taskServices(new BlockingQueueQSTaskService(workQueue))

            // Logging service which records task start, task-specific logging, task end.
            .logService(new SystemOutQSLogService())

            // Service that helps identify the machine completing tasks, this machine.
            .workerIdService(new HostNameQSWorkerIdService())

            // The worker logic observed by this instance.
            .workers(worker)

            // Run it in the current thread.
            .build().run();
}

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From source file:Main.java

public static <E> void surePut(BlockingQueue<E> q, E el) {
    while (true) {
        try {//from   w  w  w. j a v a2s .c  o m
            q.put(el);
            break;
        } catch (InterruptedException e) {
        }
    }
}

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From source file:org.wso2.carbon.cloud.gateway.transport.server.CGThriftServerHandler.java

/**
 * Add a message into the server's request buffer, wait if the buffer is full.
 *
 * @param msg   the new Thrift message/*from   www  .  j  av a  2 s. com*/
 * @param token the token to look up the real buffer
 * @throws AxisFault in case of an error - for e.g. out of space in the queue
 */
public static void addRequestMessage(Message msg, String token) throws AxisFault {
    try {
        BlockingQueue<Message> buffer = requestBuffers.get(token);
        if (buffer == null) {
            throw new AxisFault("The requested buffer is not found");
        }
        buffer.put(msg);
    } catch (Exception e) {
        throw new AxisFault(e.getMessage(), e);
    }
}

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From source file:net.yacy.cora.storage.Files.java

public static BlockingQueue<String> concurentLineReader(final File f) throws IOException {
    final BlockingQueue<String> q = new LinkedBlockingQueue<String>();
    final InputStream is = read(f);
    final BufferedReader br = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
    Thread t = new Thread() {
        @Override// ww  w  .  j  a  v a 2s .c o  m
        public void run() {
            Thread.currentThread().setName("Files.concurrentLineReader:" + f);
            String line;
            try {
                while ((line = br.readLine()) != null) {
                    q.put(line);
                }
            } catch (final IOException e) {
            } catch (final InterruptedException e) {
            } finally {
                try {
                    q.put(POISON_LINE);
                    try {
                        br.close();
                        is.close();
                    } catch (final IOException ee) {
                    }
                } catch (final InterruptedException e) {
                    // last try
                    q.add(POISON_LINE);
                    try {
                        br.close();
                        is.close();
                    } catch (final IOException ee) {
                    }
                }
            }
        }
    };
    t.start();
    return q;
}

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From source file:enmasse.queue.scheduler.Artemis.java

public static Future<Broker> create(Vertx vertx, ProtonConnection connection) {
    CompletableFuture<Broker> promise = new CompletableFuture<>();
    connection.sessionOpenHandler(ProtonSession::open);
    BlockingQueue<Message> replies = new LinkedBlockingDeque<>();
    ProtonSender sender = connection.createSender("activemq.management");
    sender.openHandler(result -> {/*from w w w  . ja  v  a  2  s .  c  o m*/
        ProtonReceiver receiver = connection.createReceiver("activemq.management");
        Source source = new Source();
        source.setDynamic(true);
        receiver.setSource(source);
        receiver.openHandler(h -> {
            promise.complete(new Artemis(vertx, sender, h.result().getRemoteSource().getAddress(), replies));
        });
        receiver.handler(((protonDelivery, message) -> {
            try {
                replies.put(message);
                ProtonHelper.accepted(protonDelivery, true);
            } catch (Exception e) {
                ProtonHelper.rejected(protonDelivery, true);
            }
        }));
        receiver.open();
    });
    sender.open();
    return promise;
}

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From source file:org.opensilk.music.playback.control.PlaybackController.java

public static PlaybackServiceConnection bindService(Context context) throws InterruptedException {
    if (context == null) {
        throw new NullPointerException("context == null");
    }/*from www  .  jav  a  2s .c o  m*/
    ensureNotOnMainThread(context);
    final BlockingQueue<IPlaybackService> q = new LinkedBlockingQueue<IPlaybackService>(1);
    ServiceConnection keyChainServiceConnection = new ServiceConnection() {
        volatile boolean mConnectedAtLeastOnce = false;

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            if (!mConnectedAtLeastOnce) {
                mConnectedAtLeastOnce = true;
                try {
                    q.put(IPlaybackService.Stub.asInterface(service));
                } catch (InterruptedException e) {
                    // will never happen, since the queue starts with one available slot
                }
            }
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
        }
    };
    Intent intent = new Intent(context, PlaybackService.class);
    boolean isBound = context.bindService(intent, keyChainServiceConnection, Context.BIND_AUTO_CREATE);
    if (!isBound) {
        throw new AssertionError("could not bind to KeyChainService");
    }
    return new PlaybackServiceConnection(context, keyChainServiceConnection, q.take());
}

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From source file:org.mitre.mpf.mst.TestSystemStress3.java

/**
 * This test intentionally runs one file per job
 *///from ww  w  .  j a v  a  2 s.  c  om
@Test(timeout = 180 * MINUTES)
public void runFaceOcvDetectImageManyJobs() throws Exception {
    testCtr++;
    log.info("Beginning test #{} runFaceOcvDetectImageManyJobs()", testCtr);
    IOFileFilter fileFilter = FileFilterUtils.and(FileFilterUtils.fileFileFilter(),
            FileFilterUtils.suffixFileFilter(".jpg"));

    int numExtractors = 6; // number of extractors on Jenkins (* number of nodes, now 1)
    //        int numExtractors = 2;  // number of extractors on local VM * 1 node

    // for testing on local VM only
    //        Collection<File> files = FileUtils.listFiles(new File(getClass().getClassLoader().getResource("samples/face").getFile()),
    //            fileFilter, null);

    // for testing on Jenkins
    // 10,000 jpgs
    Collection<File> files = FileUtils.listFiles(new File("/mpfdata/datasets/mugshots_10000"), fileFilter,
            null);

    BlockingQueue<File> fQueue = new ArrayBlockingQueue<File>(files.size());
    for (File file : files) {
        fQueue.put(file);
    }
    ExecutorService executor = Executors.newFixedThreadPool(numExtractors);
    JobRunner[] jobRunners = new JobRunner[numExtractors];
    for (int i = 0; i < numExtractors; i++) {
        jobRunners[i] = new JobRunner(fQueue);
        executor.submit(jobRunners[i]);
    }
    executor.shutdown();
    executor.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);

    Assert.assertEquals(
            "Number of files to process={} doesn't match actual number of jobs run={} (one job/file)",
            files.size(), manyJobsNumFilesProcessed);
    log.info("Successfully ran {} jobs for {} files, one file per job, without a hiccup",
            manyJobsNumFilesProcessed, files.size());
    log.info("Finished test runFaceOcvDetectImageManyJobs()");
}

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From source file:com.mirth.connect.server.controllers.DefaultEventController.java

@Override
public void dispatchEvent(Event event) {
    try {// w w w .jav  a  2  s. c  o m
        Map<Object, BlockingQueue<Event>> queues = null;
        /*
         * Using instanceof is several thousand times faster than using a map to store the
         * different queue sets.
         */
        if (event instanceof MessageEvent) {
            queues = messageEventQueues;
        } else if (event instanceof ErrorEvent) {
            queues = errorEventQueues;
        } else if (event instanceof DeployedStateEvent) {
            queues = deployedStateEventQueues;
        } else if (event instanceof ConnectionStatusEvent) {
            queues = connectionStatusEventQueues;
        } else if (event instanceof ServerEvent) {
            queues = serverEventQueues;
        } else {
            queues = genericEventQueues;
        }

        for (BlockingQueue<Event> queue : queues.values()) {
            queue.put(event);
        }
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
    }
}

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