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

        }
        if (getCompletionInterval() > 0) {
            LOG.info("Using CompletionInterval to run every " + getCompletionInterval() + " millis.");
            ScheduledExecutorService scheduler = camelContext.getExecutorServiceManager().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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        final String prefix = Configuration.CONFIG_PROPERTY_PREFIX + name;
        final long period = getPeriod(prefix);
        clearAfterCollect = isClearAfterCollect(prefix);


        final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory(name + "-counter-schedule-"));
        final ScheduledFuture<?> future = ses.scheduleAtFixedRate(new BatchPushCountersTask(), period, period, TimeUnit.MILLISECONDS);
        scheduledTask = new BatchFuture(ses, future);
    }


    protected boolean isClearAfterCollect(final String prefix) {
        return Configuration.is(prefix + ".counter.clearOnCollect", false);

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    public void initBatch() {
        final String name = getClass().getSimpleName().toLowerCase(Locale.ENGLISH).replace("gaugedatastore", "");
        final long period = getPeriod(name);


        final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory(name + "-gauge-schedule-"));
        final ScheduledFuture<?> future = ses.scheduleAtFixedRate(new PushGaugesTask(), period, period, TimeUnit.MILLISECONDS);
        scheduledTask = new BatchFuture(ses, future);
    }


    protected int getPeriod(final String name) {
        return Configuration.getInteger(Configuration.CONFIG_PROPERTY_PREFIX + name + ".gauge.period",

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        final ScheduledExecutorService ses =
            Executors.newSingleThreadScheduledExecutor( new DaemonThreadFactory( name + "-pathtracking-schedule-" ) );


        final ScheduledFuture<?> future =
            ses.scheduleAtFixedRate( new PushPathTrackingTask(), period, period, TimeUnit.MILLISECONDS );


        scheduledTask = new BatchFuture( ses, future );
    }


    protected int getPeriod( final String name )

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    public void initAggregated() {
        final String name = getClass().getSimpleName().toLowerCase(Locale.ENGLISH).replace("gaugedatastore", "") + ".aggregated";
        final long period = getPeriod(name);


        final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory(name + "-aggregated-gauge-schedule-"));
        final ScheduledFuture<?> future = ses.scheduleAtFixedRate(new PushGaugesTask(), period, period, TimeUnit.MILLISECONDS);
        scheduledAggregatedTask = new BatchFuture(ses, future);
    }


    @Destroying
    public void shutdown() {

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    private void reload() {
        final String name = getClass().getSimpleName().toLowerCase(Locale.ENGLISH).replace("nodestatusdatastore", "");
        final long period = getPeriod(name);


        final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory(name + "-status-schedule-"));
        final ScheduledFuture<?> future = ses.scheduleAtFixedRate(new ReportStatusTask(nodeStatusReporter), period, period, TimeUnit.MILLISECONDS);
        scheduledTask.set(new BatchFuture(ses, future));
    }


    protected int getPeriod(final String name) {
        return Configuration.getInteger(Configuration.CONFIG_PROPERTY_PREFIX + name + ".status.period",

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            if (collectionFuture == null) {
                synchronized (this) {
                    if (collectionFuture == null) {
                        final ScheduledExecutorService ses =
                            Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory("collector-pull-schedule"));
                        final ScheduledFuture<?> future = ses.scheduleAtFixedRate(new CollectTask(), //
                                                                                  collectionPeriod, //
                                                                                  collectionPeriod, //
                                                                                  TimeUnit.MILLISECONDS);
                        collectionFuture = new BatchFuture(ses, future);
                    }

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    ScheduledExecutorService scheduler = Executors
        .newSingleThreadScheduledExecutor();


    batchUpdater = new RecordBatchUpdater(sqliteManager);
    //update index per  second.
    scheduler.scheduleAtFixedRate(batchUpdater, 0, 1, TimeUnit.SECONDS);
  }
  
  public static FileSystemDb getInstance() {
    return instance;
  }

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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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    /**
     * 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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