Example usage for java.util.concurrent ScheduledExecutorService scheduleAtFixedRate

Introduction

In this page you can find the example usage for java.util.concurrent ScheduledExecutorService scheduleAtFixedRate.

Prototype

public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit);

Source Link

Document

Submits a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is, executions will commence after initialDelay , then initialDelay + period , then initialDelay + 2 * period , and so on.

Usage

From source file:app.screen.MyActivity.java

/** create a repeating executor that displays debug messages after interacting with service */
private void _scheduleRepeatingTask() {
    ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
    executor.scheduleAtFixedRate(new Runnable() {
        public void run() {
            try {
                StringBuilder sb = new StringBuilder();
                sb.append("ScheduledExecutorRunning - ").append(new Date().toString());
                AndroidUtils.log(IconPaths.MyApp, sb.toString());
            } catch (Exception e) {
            }/*from  www .j  a  v  a 2  s  .co m*/
        }
    }, 0, MyActivityRepeatDelay_ms, TimeUnit.MILLISECONDS);
    lifecycleHelper.addResource(executor);
}

---

From source file:com.graphaware.importer.context.BaseImportContext.java

/**
 * {@inheritDoc}/*from  w ww  .  j a  v a2  s  .c o m*/
 */
@Override
public final void shutdown() {
    ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
    executor.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            LOG.info("I am still alive!");
        }
    }, 1, 1, TimeUnit.MINUTES);

    preShutdown();

    indexProvider().shutdown();

    inserter().shutdown();

    postShutdown();

    executor.shutdownNow();
}

---

From source file:com.hurence.logisland.connect.opc.ua.OpcUaSourceTaskTest.java

@Test
@Ignore// w  w w . j  av  a 2 s  .  c  o m
public void e2eTest() throws Exception {
    OpcUaSourceConnector connector = new OpcUaSourceConnector();
    Map<String, String> properties = new HashMap<>();
    properties.put(OpcUaSourceConnector.PROPERTY_AUTH_BASIC_USER, "test");
    properties.put(OpcUaSourceConnector.PROPERTY_AUTH_BASIC_PASSWORD, "test");
    properties.put(CommonDefinitions.PROPERTY_CONNECTION_SOCKET_TIMEOUT, "10000");
    properties.put(CommonDefinitions.PROPERTY_SERVER_URI, "opc.tcp://127.0.0.1:53530/OPCUA/SimulationServer");
    properties.put(CommonDefinitions.PROPERTY_TAGS_ID, "ns=5;s=Counter1,ns=5;s=Random1,ns=5;s=Sinusoid1");
    properties.put(CommonDefinitions.PROPERTY_TAGS_STREAM_MODE, "SUBSCRIBE,POLL,SUBSCRIBE");
    properties.put(CommonDefinitions.PROPERTY_TAGS_SAMPLING_RATE, "PT3S,PT0.01S,PT1S");
    properties.put(OpcUaSourceConnector.PROPERTY_DATA_PUBLICATION_RATE, "PT1S");

    connector.start(properties);
    OpcUaSourceTask task = new OpcUaSourceTask();
    task.start(connector.taskConfigs(1).get(0));
    ScheduledExecutorService es = Executors.newSingleThreadScheduledExecutor();
    Gson json = new Gson();
    es.scheduleAtFixedRate(() -> {
        try {
            task.poll().stream()
                    .map(a -> Pair.of(new Date((Long) a.sourceOffset().get(OpcRecordFields.SAMPLED_TIMESTAMP)),
                            json.toJson(a)))
                    .forEach(System.out::println);
        } catch (InterruptedException e) {
            //do nothing
        }
    }, 0, 10, TimeUnit.MILLISECONDS);

    Thread.sleep(600000);
    task.stop();
    es.shutdown();
    connector.stop();
}

---

From source file:org.xdi.oxd.server.license.LicenseService.java

private void schedulePeriodicValidation() {
    final ScheduledExecutorService executorService = Executors
            .newSingleThreadScheduledExecutor(CoreUtils.daemonThreadFactory());
    executorService.scheduleAtFixedRate(new Runnable() {
        @Override//from   w ww.j  a  v  a  2 s. co  m
        public void run() {
            licenseValid = validate();
        }
    }, 1, 24, TimeUnit.HOURS);
}

---

From source file:com.talis.hadoop.rdf.merge.IndexMergeReducer.java

@Override
public void reduce(LongWritable key, Iterable<Text> value, final Context context)
        throws IOException, InterruptedException {
    Runnable reporter = new Runnable() {
        @Override/*  w w w .  j  a v  a2  s .c o m*/
        public void run() {
            context.progress();
        }
    };
    ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
    ScheduledFuture<?> task = scheduler.scheduleAtFixedRate(reporter, 60, 60, TimeUnit.SECONDS);
    LOG.debug("Scheduled progress reporter, combining index shards");

    FileSystem shardsFs = null;
    for (Text remoteShard : value) {
        Path remote = new Path(remoteShard.toString());
        if (null == shardsFs) {
            shardsFs = FileSystem.get(remote.toUri(), context.getConfiguration());
        }
        LOG.debug("Copying shard from {} to {}", remote, localShards);
        shardsFs.copyToLocalFile(remote, localShards);
        LOG.debug("Copy complete");
    }

    Directory[] shards = getDirectories();
    LOG.debug("About to combine {} shards", shards.length);
    writer.addIndexesNoOptimize(shards);
    LOG.debug("Combined index built, terminating reporter");
    task.cancel(true);

}

---

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...
    ///*ww w  .j a v  a 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:hivemall.mix.server.MixServer.java

public void start() throws CertificateException, SSLException, InterruptedException {
    // Configure SSL.
    final SslContext sslCtx;
    if (ssl) {// w w  w  . j  a  va2  s.  co m
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContext.newServerContext(ssc.certificate(), ssc.privateKey());
    } else {
        sslCtx = null;
    }

    // configure metrics
    ScheduledExecutorService metricCollector = Executors.newScheduledThreadPool(1);
    MixServerMetrics metrics = new MixServerMetrics();
    ThroughputCounter throughputCounter = new ThroughputCounter(metricCollector, 5000L, metrics);
    if (jmx) {// register mbean
        MetricsRegistry.registerMBeans(metrics, port);
    }

    // configure initializer
    SessionStore sessionStore = new SessionStore();
    MixServerHandler msgHandler = new MixServerHandler(sessionStore, syncThreshold, scale);
    MixServerInitializer initializer = new MixServerInitializer(msgHandler, throughputCounter, sslCtx);

    Runnable cleanSessionTask = new IdleSessionSweeper(sessionStore, sessionTTLinSec * 1000L);
    ScheduledExecutorService idleSessionChecker = Executors.newScheduledThreadPool(1);
    try {
        // start idle session sweeper
        idleSessionChecker.scheduleAtFixedRate(cleanSessionTask, sessionTTLinSec + 10L, sweepIntervalInSec,
                TimeUnit.SECONDS);
        // accept connections
        acceptConnections(initializer, port, numWorkers);
    } finally {
        // release threads
        idleSessionChecker.shutdownNow();
        if (jmx) {
            MetricsRegistry.unregisterMBeans(port);
        }
        metricCollector.shutdownNow();
    }
}

---

From source file:com.ning.metrics.eventtracker.ScribeSender.java

public ScribeSender(ScribeClient scribeClient, int messagesToSendBeforeReconnecting, int maxIdleTimeInMinutes) {
    this.scribeClient = scribeClient;
    this.messagesToSendBeforeReconnecting = messagesToSendBeforeReconnecting;

    // Setup a watchdog for the Scribe connection. We don't want to keep it open forever. For instance, SLB VIP
    // may trigger a RST if idle more than a few minutes.
    final ScheduledExecutorService executor = new ScheduledThreadPoolExecutor(1,
            Executors.defaultThreadFactory());
    executor.scheduleAtFixedRate(new Runnable() {
        @Override/*from   w  ww  .j  av  a2s .  com*/
        public void run() {
            if (sleeping.get()) {
                log.info("Idle connection to Scribe, re-opening it");
                createConnection();
            }
            sleeping.set(true);
        }
    }, maxIdleTimeInMinutes, maxIdleTimeInMinutes, TimeUnit.MINUTES);
}

---

From source file:org.openremote.controller.protocol.isy99.Isy99StatusReader.java

/**
  * @param host       hostname or IP address for the ISY-99
  * @param username   username for authentication to the ISY-99
  * @param password   password for authentication to the ISY-99
  */// ww  w . j  a  va  2  s .c  om
public Isy99StatusReader(String host, String username, String password) {
    Runnable queryTask = new QueryTask(host, username, password);

    ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(NUM_THREADS);
    scheduler.scheduleAtFixedRate(queryTask, INITIAL_DELAY, PERIOD_BETWEEN_EXECUTIONS, TimeUnit.SECONDS);
}

---

From source file:com.web.server.util.FarmWarFileTransfer.java

private FarmWarFileTransfer(String deployDir, String farmwarDir, String clusterGroup) {
    this.deployDir = deployDir;
    this.farmwarDir = farmwarDir;
    this.clusterGroup = clusterGroup;
    ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
    FarmWarDirWatcher task = new FarmWarDirWatcher(farmwarDir, this);
    exec.scheduleAtFixedRate(task, 0, 1000, TimeUnit.MILLISECONDS);
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• »