Examples of java.util.concurrent.ScheduledExecutorService.scheduleAtFixedRate()

Class java.util.concurrent.ScheduledExecutorService

Examples of java.util.concurrent.ScheduledExecutorService.scheduleAtFixedRate()

java.util.concurrent.ScheduledExecutorService.scheduleAtFixedRate()
Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is executions will commence after {@code initialDelay} then {@code initialDelay+period}, then {@code initialDelay + 2 * period}, and so on. If any execution of the task encounters an exception, subsequent executions are suppressed. Otherwise, the task will only terminate via cancellation or termination of the executor. If any execution of this task takes longer than its period, then subsequent executions may start late, but will not concurrently execute. @param command the task to execute @param initialDelay the time to delay first execution @param period the period between successive executions @param unit the time unit of the initialDelay and period parameters @return a ScheduledFuture representing pending completion ofthe task, and whose {@code get()} method will throw anexception upon cancellation @throws RejectedExecutionException if the task cannot bescheduled for execution @throws NullPointerException if command is null @throws IllegalArgumentException if period less than or equal to zero

    //Schedule Nimbus inbox cleaner.����/nimbus/inbox�¹��ڵ�jar
    String dir_location=StormConfig.masterInbox(conf);
    int inbox_jar_expiration_secs=(Integer)conf.get(Config.NIMBUS_INBOX_JAR_EXPIRATION_SECS);
    CleanRunnable r2 = new CleanRunnable(dir_location,inbox_jar_expiration_secs);
    int cleanup_inbox_freq_secs = (Integer) conf.get(Config.NIMBUS_CLEANUP_INBOX_FREQ_SECS);
    scheduExec.scheduleAtFixedRate(r2, cleanup_inbox_freq_secs, cleanup_inbox_freq_secs,TimeUnit.SECONDS);


    //Thrift server���ü���������
    Integer thrift_port = (Integer) conf.get(Config.NIMBUS_THRIFT_PORT);
    TNonblockingServerSocket socket = new TNonblockingServerSocket(
        thrift_port);

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    /** The default implementation of Scheduler. */
    private static class BasicScheduler implements Scheduler {
  public TaskHandle scheduleRecurringTask(Runnable task, long period) {
      final ScheduledExecutorService executor =
    Executors.newSingleThreadScheduledExecutor();
      executor.scheduleAtFixedRate(
    task, period, period, TimeUnit.MILLISECONDS);
      return new TaskHandle() {
    public synchronized void cancel() {
        if (executor.isShutdown()) {
      throw new IllegalStateException(

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        final int FACTS_PER_POLL = 1000;
        final int POLL_INTERVAL = 500;


        ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
        executor.scheduleAtFixedRate(
                new Runnable() {


                    public void run() {
                        for ( int j = 0; j < FACTS_PER_POLL; j++ ) {
                            ksession.insert( new MyFact() );

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   * Instantiates the ScheduledExecutorService which will iterate through all monitored Metrics at the specified period, 
   * send the current value of the Metric, and then clear the value.
   */
  private void setMonitor() {
    ScheduledExecutorService eScheduledService = Executors.newSingleThreadScheduledExecutor();
    eScheduledService.scheduleAtFixedRate(new TimerTask() {
      public void run() {
        updateCount++;
        for (Metricable gmetric : gmetrics) {
          if (updateCount > initPeriod) {
            sendGMetricInit(gmetric);

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        final int FACTS_PER_POLL = 1000;
        final int POLL_INTERVAL = 500;


        ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
        executor.scheduleAtFixedRate(
                new Runnable() {


                    public void run() {
                        for ( int j = 0; j < FACTS_PER_POLL; j++ ) {
                            ksession.insert( new MyFact() );

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    /**
     * Due to the lack of contract in CDI guaranteeing when beans will be available, we use an executor to search for
     * the beans every 100ms until it finds them. Or, after a 25 seconds, blow up if they don't become available.
     */
    final ScheduledExecutorService startupScheduler = Executors.newScheduledThreadPool(1);
    startupScheduler.scheduleAtFixedRate(
        new StartupCallback(beanManager, bus, startupScheduler, 25), 0, 100, TimeUnit.MILLISECONDS);


    for (final Class<?> remoteInterfaceType : managedTypes.getRemoteInterfaces()) {
      createRPCScaffolding(remoteInterfaceType, bus, beanManager);
    }

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        }
        if (getCompletionInterval() > 0) {
            LOG.info("Using CompletionInterval to run every " + getCompletionInterval() + " millis.");
            ScheduledExecutorService scheduler = camelContext.getExecutorServiceStrategy().newScheduledThreadPool(this, "AggregateTimeoutChecker", 1);
            // trigger completion based on interval
            scheduler.scheduleAtFixedRate(new AggregationIntervalTask(), 1000L, getCompletionInterval(), TimeUnit.MILLISECONDS);
        }


        // start timeout service if its in use
        if (getCompletionTimeout() > 0 || getCompletionTimeoutExpression() != null) {
            LOG.info("Using CompletionTimeout to trigger after " + getCompletionTimeout() + " millis of inactivity.");

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     * Due to the lack of contract in CDI guaranteeing when beans will be available, we use an
     * executor to search for the beans every 100ms until it finds them. Or, after a 25 seconds,
     * blow up if they don't become available.
     */
    final ScheduledExecutorService startupScheduler = Executors.newScheduledThreadPool(1);
    startupScheduler.scheduleAtFixedRate(new StartupCallback(beanManager, bus, startupScheduler, 25), 0, 100,
            TimeUnit.MILLISECONDS);


    for (final Class<?> remoteInterfaceType : managedTypes.getRemoteInterfaces()) {
      createRPCScaffolding(remoteInterfaceType, bus, beanManager);
    }

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    this.executer = Executors
        .newFixedThreadPool(NUMBER_OF_PARALLEL_REQUESTS);
    if (SHOW_DEBUG_PROCESSINGS_LIST) {
      ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
      
      scheduler.scheduleAtFixedRate(displayMap, 0, 1, TimeUnit.MINUTES);
    }
  }


  private Logger l = Logger.getLogger(this.getClass());

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        final int FACTS_PER_POLL = 1000;
        final int POLL_INTERVAL = 500;


        ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
        executor.scheduleAtFixedRate(
                new Runnable() {


                    public void run() {
                        for ( int j = 0; j < FACTS_PER_POLL; j++ ) {
                            ksession.insert( new MyFact() );

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