Example usage for java.util.concurrent Executors newScheduledThreadPool

Introduction

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

Prototype

public static ScheduledExecutorService newScheduledThreadPool(int corePoolSize) 

Source Link

Document

Creates a thread pool that can schedule commands to run after a given delay, or to execute periodically.

Usage

From source file:org.cerberus.launchcampaign.checkcampaign.CheckCampaignStatus.java

/**
 * Check all 5 seconds the status of campaign's execution. 
 * @param checkCampaign call method checkCampaign() all 5 seconds with parameter {@link ResultCIDto}.  
 *                   {@link ResultCIDto} contains all information of execution of campaing at the instant t
 * @param result call method result() when campaign execution is finish.
 *             {@link ResultCIDto} contains all information of execution at finish time
 * @throws Exception //  w  w  w .  ja v a 2 s  . com
 */
public void execute(final CheckCampaignEvent checkCampaign, final ResultEvent result, final LogEvent logEvent)
        throws Exception {
    final ScheduledThreadPoolExecutor sch = (ScheduledThreadPoolExecutor) Executors.newScheduledThreadPool(1);

    final AtomicReference<Exception> exceptionOnThread = new AtomicReference<Exception>();

    sch.scheduleWithFixedDelay(new Runnable() {

        @Override
        public void run() {
            try {
                URL resultURL = new URL(urlCerberus + "/" + Constantes.URL_RESULT_CI + "?tag=" + tagCerberus);
                ResultCIDto resultDto = new ObjectMapper().readValue(resultURL, ResultCIDto.class);

                // condition to finish task
                if (!"PE".equals(resultDto.getResult())) {
                    result.result(resultDto);
                    sch.shutdown(); // when campaign is finish, we shutdown the schedule thread
                }

                if (!checkCampaign.checkCampaign(resultDto)) {
                    sch.shutdown();
                }
            } catch (SocketException e) {
                // do nothing during network problem. Wait the timeout to shutdown, and notify the error to logEvent
                logEvent.log("", e.getMessage() + "\n" + ExceptionUtils.getStackTrace(e));
            } catch (Exception e) {
                exceptionOnThread.set(e);
                sch.shutdown();
            }
        }
    }, 0, this.timeToRefreshCampaignStatus, TimeUnit.SECONDS);

    sch.awaitTermination(this.timeoutForCampaignExecution, TimeUnit.SECONDS);

    // pass exeption of thread to called method
    if (exceptionOnThread.get() != null) {
        throw exceptionOnThread.get();
    }
}

---

From source file:org.ebayopensource.scc.track.TrackerClientTest.java

@Test
public void testGet() {
    AppConfiguration config = mock(AppConfiguration.class);
    when(config.getString("trackerClient.endpoint.host")).thenReturn("127.0.0.1");
    when(config.getInt("trackerClient.endpoint.port")).thenReturn(8080);
    when(config.getString("trackerClient.endpoint.path"))
            .thenReturn("/build-service/webapi/serviceCache/tracker");
    when(config.getBoolean("trackerClient.endpoint.isSecure")).thenReturn(false);

    TrackerClient tc = new TrackerClient(config, Executors.newScheduledThreadPool(1));

    assertNotNull(tc.getIp());/*from  ww w. j a  v a  2  s.  com*/
}

---

From source file:org.openhab.binding.ebus.connection.EBusCommandProcessor.java

@Override
public void bindingChanged(BindingProvider provider, final String itemName) {

    logger.debug("Binding changed for item {}", itemName);

    final EBusBindingProvider eBusProvider = (EBusBindingProvider) provider;
    int refreshRate = eBusProvider.getRefreshRate(itemName);

    if (refreshRate > 0) {

        final Runnable r = new Runnable() {
            @Override//from w  w  w . j a  v a2 s.  c  o  m
            public void run() {
                byte[] data = composeSendData(eBusProvider, itemName, null);

                if (data != null && data.length > 0) {
                    if (connector == null) {
                        logger.warn("eBus connector not ready, can't send data yet!");
                    } else {
                        connector.send(data);
                    }
                } else {
                    logger.warn("No data to send for item {}! Check your item configuration.", itemName);
                }
            }
        };

        if (futureMap.containsKey(itemName)) {
            logger.debug("Stopped old polling item {} ...", itemName);
            futureMap.remove(itemName).cancel(true);
        }

        if (scheduler == null) {
            scheduler = Executors.newScheduledThreadPool(2);
        }

        logger.debug("Add polling item {} with refresh rate {} to scheduler ...", itemName, refreshRate);

        // do not start all pollings at the same time
        int randomInitDelay = (int) (Math.random() * (30 - 4) + 4);
        futureMap.put(itemName,
                scheduler.scheduleWithFixedDelay(r, randomInitDelay, refreshRate, TimeUnit.SECONDS));

    } else if (futureMap.containsKey(itemName)) {
        logger.debug("Remove scheduled refresh for item {}", itemName);
        futureMap.get(itemName).cancel(true);
        futureMap.remove(itemName);
    }
}

---

From source file:org.eclipse.gyrex.cloud.tests.internal.locking.DurableLockTests.java

/**
 * @throws java.lang.Exception/*from  w  w  w  . ja  v a2s  .c o m*/
 */
@Before
public void setUp() throws Exception {
    executorService = Executors.newScheduledThreadPool(4);

    // configure debug output
    CloudDebug.debug = true;
    CloudDebug.zooKeeperLockService = true;
    CloudDebug.zooKeeperGateLifecycle = false;
    CloudDebug.zooKeeperServer = false;
    CloudDebug.nodeMetrics = false;
    CloudDebug.cloudState = false;
}

---

From source file:org.pentaho.di.www.ge.trans.LogBrowser.java

public void installLogSniffer() {
    // Create a new buffer appender to the log and capture that directly...
    ////from w ww .j a va 2s .c  o  m
    lastLogId = new AtomicInteger(-1);
    busy = new AtomicBoolean(false);
    logLayout = new KettleLogLayout(true);

    /*
     * final StyleRange normalLogLineStyle = new StyleRange();
     * normalLogLineStyle.foreground =
     * GUIResource.getInstance().getColorBlue(); final StyleRange
     * errorLogLineStyle = new StyleRange(); errorLogLineStyle.foreground =
     * GUIResource.getInstance().getColorRed();
     */

    // Refresh the log every second or so
    //
    ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
    logRefreshTimerFuture = scheduler.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            busy.set(true);
            System.out.println(String.format("Running LogDelegate refreshLog()"));
            new Thread(new Runnable() {
                public void run() {
                    collectAndPushishLog();
                }
            }).start();
            busy.set(false);
        }
    }, 1000, 500, TimeUnit.MILLISECONDS);
}

---

From source file:org.apache.marmotta.loader.statistics.Statistics.java

public void startSampling() {
    log.info("statistics gathering enabled; starting statistics database");

    this.start = System.currentTimeMillis();
    this.previous = System.currentTimeMillis();

    try {/*  www . j  a v a 2 s  .  co m*/
        statFile = Files.createTempFile("kiwiloader.", ".rrd");
        Path gFile;
        if (configuration.containsKey(LoaderOptions.STATISTICS_GRAPH)) {
            gFile = Paths.get(configuration.getString(LoaderOptions.STATISTICS_GRAPH));
        } else {
            gFile = Files.createTempFile("marmotta-loader.", ".png");
        }

        RrdDef stCfg = new RrdDef(statFile.toString());
        stCfg.setStep(SAMPLE_INTERVAL);
        stCfg.addDatasource("triples", DsType.COUNTER, 600, Double.NaN, Double.NaN);
        stCfg.addArchive(ConsolFun.AVERAGE, 0.5, 1, 1440); // every five seconds for 2 hours
        stCfg.addArchive(ConsolFun.AVERAGE, 0.5, 12, 1440); // every minute for 1 day
        stCfg.addArchive(ConsolFun.AVERAGE, 0.5, 60, 1440); // every five minutes for five days

        statDB = new RrdDb(stCfg);
        statSample = statDB.createSample();
        statLastDump = System.currentTimeMillis();

        // start a sampler thread to run at the SAMPLE_INTERVAL
        statSampler = Executors.newScheduledThreadPool(2);
        statSampler.scheduleAtFixedRate(new StatisticsUpdater(), 0, SAMPLE_INTERVAL, TimeUnit.SECONDS);

        // create a statistics diagram every 5 minutes
        diagramUpdater = new DiagramUpdater(gFile);
        statSampler.scheduleAtFixedRate(diagramUpdater, DIAGRAM_INTERVAL, DIAGRAM_INTERVAL, TimeUnit.SECONDS);
    } catch (IOException e) {
        log.warn("could not initialize statistics database: {}", e.getMessage());
    }

}

---

From source file:org.apache.nifi.io.nio.ChannelListener.java

public ChannelListener(final int threadPoolSize, final StreamConsumerFactory consumerFactory,
        final BufferPool bufferPool, int timeout, TimeUnit unit, final boolean readSingleDatagram)
        throws IOException {
    this.executor = Executors.newScheduledThreadPool(threadPoolSize + 1); // need to allow for long running ChannelDispatcher thread
    this.serverSocketSelector = Selector.open();
    this.socketChannelSelector = Selector.open();
    this.bufferPool = bufferPool;
    this.initialBufferPoolSize = bufferPool.size();
    channelDispatcher = new ChannelDispatcher(serverSocketSelector, socketChannelSelector, executor,
            consumerFactory, bufferPool, timeout, unit, readSingleDatagram);
    executor.schedule(channelDispatcher, 50, TimeUnit.MILLISECONDS);
}

---

From source file:org.sample.jms.SampleQueueReceiver.java

public void calculate() {

    Runnable helloRunnable = new Runnable() {
        public void run() {
            System.out.println(messageCount);
            messageCount = 0;/*from ww w.ja  va  2 s  .co  m*/
        }
    };

    ScheduledExecutorService executor = Executors.newScheduledThreadPool(0);
    executor.scheduleAtFixedRate(helloRunnable, 1, 1, TimeUnit.SECONDS);

}

---

From source file:com.mobius.software.mqtt.performance.controller.Controller.java

private void initTaskExecutor() {
    scheduler = new PeriodicQueuedTasks<TimedTask>(Config.getInstance().getTimersInterval(), mainQueue);
    workersExecutor = Executors.newFixedThreadPool(Config.getInstance().getWorkers());
    for (int i = 0; i < Config.getInstance().getWorkers(); i++) {
        Worker worker = new Worker(scheduler, mainQueue);
        workers.add(worker);//  w ww.j a va  2s .  c  o m
        workersExecutor.submit(worker);
    }
    timersExecutor = Executors.newScheduledThreadPool(2);
    timersExecutor.scheduleAtFixedRate(new PeriodicTasksRunner(scheduler), 0,
            Config.getInstance().getTimersInterval(), TimeUnit.MILLISECONDS);

}

---

From source file:biospectra.classify.ClassifierClient.java

public ClassifierClient(ClientConfiguration conf) throws Exception {
    if (conf == null) {
        throw new IllegalArgumentException("conf is null");
    }//w  w w . ja v a2s .  c  om

    this.conf = conf;

    for (int i = 0; i < conf.getRabbitMQHostnames().size(); i++) {

        RabbitMQInputClient.RabbitMQInputClientEventHandler handler = new RabbitMQInputClient.RabbitMQInputClientEventHandler() {
            @Override
            public void onSuccess(long reqId, String header, String sequence, List<SearchResultEntry> result,
                    ClassificationResult.ClassificationResultType type, String taxonRank, String taxonName) {
                if (responseHandler != null) {
                    responseHandler.onSuccess(reqId, header, sequence, result, type, taxonRank, taxonName);
                } else {
                    LOG.error("responseHandler is not set");
                }
            }

            @Override
            public void onTimeout(long reqId, String header, String sequence) {
                RabbitMQInputClient client = this.getClient();
                client.reportTimeout();

                if (responseHandler != null) {
                    responseHandler.onTimeout(reqId, header, sequence);
                } else {
                    LOG.error("responseHandler is not set");
                }
            }
        };

        RabbitMQInputClient client = new RabbitMQInputClient(conf, i, handler);
        this.clients.add(client);
    }

    this.retransmitThreadPool = Executors.newScheduledThreadPool(4);
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• »