Example usage for java.util.concurrent Executors newSingleThreadScheduledExecutor

Introduction

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

Prototype

public static ScheduledExecutorService newSingleThreadScheduledExecutor()

Source Link

Document

Creates a single-threaded executor that can schedule commands to run after a given delay, or to execute periodically.

Usage

From source file:org.apache.storm.metric.FileBasedEventLogger.java

private void setUpFlushTask() {
    ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
    Runnable task = new Runnable() {
        @Override/*from  w  w  w  . j a v  a  2  s  . c  o m*/
        public void run() {
            try {
                if (dirty) {
                    eventLogWriter.flush();
                    dirty = false;
                }
            } catch (IOException ex) {
                LOG.error("Error flushing " + eventLogPath, ex);
                throw new RuntimeException(ex);
            }
        }
    };

    scheduler.scheduleAtFixedRate(task, FLUSH_INTERVAL_MILLIS, FLUSH_INTERVAL_MILLIS, TimeUnit.MILLISECONDS);
}

From source file:com.hurence.logisland.connect.opc.da.OpcDaSourceConnectorTest.java

@Test
@Ignore/*  w  ww .  jav a  2s  . c  o m*/
public void e2eTest() throws Exception {
    OpcDaSourceConnector connector = new OpcDaSourceConnector();
    Map<String, String> properties = new HashMap<>();
    properties.put(OpcDaSourceConnector.PROPERTY_AUTH_NTLM_DOMAIN, "OPC-9167C0D9342");
    properties.put(CommonDefinitions.PROPERTY_CONNECTION_SOCKET_TIMEOUT, "2000");
    properties.put(OpcDaSourceConnector.PROPERTY_AUTH_NTLM_PASSWORD, "opc");
    properties.put(OpcDaSourceConnector.PROPERTY_AUTH_NTLM_USER, "OPC");
    properties.put(CommonDefinitions.PROPERTY_SERVER_URI, "opc.da://192.168.99.100");
    properties.put(OpcDaSourceConnector.PROPERTY_SERVER_CLSID, "F8582CF2-88FB-11D0-B850-00C0F0104305");
    properties.put(CommonDefinitions.PROPERTY_TAGS_ID, "Random.Real8,Triangle Waves.Int4");
    properties.put(CommonDefinitions.PROPERTY_TAGS_STREAM_MODE, "SUBSCRIBE,POLL");
    properties.put(CommonDefinitions.PROPERTY_TAGS_SAMPLING_RATE, "PT3S,PT1S");
    properties.put(OpcDaSourceConnector.PROPERTY_SESSION_REFRESH_PERIOD, "1000");
    properties.put(OpcDaSourceConnector.PROPERTY_TAGS_DATA_TYPE_OVERRIDE, "0,8");

    connector.start(properties);
    OpcDaSourceTask task = new OpcDaSourceTask();
    task.start(connector.taskConfigs(1).get(0));
    ScheduledExecutorService es = Executors.newSingleThreadScheduledExecutor();
    Gson json = new Gson();
    es.scheduleAtFixedRate(() -> {
        try {
            task.poll().stream()
                    .map(a -> org.apache.commons.lang3.tuple.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:com.linkedin.kmf.KafkaMonitor.java

public KafkaMonitor(Map<String, Map> testProps) throws Exception {
    _tests = new HashMap<>();
    _services = new HashMap<>();

    for (Map.Entry<String, Map> entry : testProps.entrySet()) {
        String name = entry.getKey();
        Map props = entry.getValue();
        if (!props.containsKey(CLASS_NAME_CONFIG))
            throw new IllegalArgumentException(name + " is not configured with " + CLASS_NAME_CONFIG);
        String className = (String) props.get(CLASS_NAME_CONFIG);

        if (className.startsWith(App.class.getPackage().getName())
                || className.startsWith(Test.class.getPackage().getName())) {
            App test = (App) Class.forName(className).getConstructor(Map.class, String.class).newInstance(props,
                    name);//from  w  ww . j  a v a2  s. co  m
            _tests.put(name, test);
        } else {
            Service service = (Service) Class.forName(className).getConstructor(Map.class, String.class)
                    .newInstance(props, name);
            _services.put(name, service);
        }
    }

    _executor = Executors.newSingleThreadScheduledExecutor();
}

From source file:org.apache.synapse.transport.utils.sslcert.cache.CacheManager.java

/**
 * A new cacheManager will be started on the given ManageableCache object.
 *
 * @param cache        a Manageable Cache which could be managed by this cache manager.
 * @param cacheMaxSize Maximum size of the cache. If the cache exceeds this size, LRU values
 *                     will be removed/*from  ww  w .j a  v  a 2 s .c  o m*/
 */
public CacheManager(ManageableCache cache, int cacheMaxSize, int duration) {
    scheduler = Executors.newSingleThreadScheduledExecutor();
    this.cache = cache;
    this.cacheMaxSize = cacheMaxSize;
    this.cacheManagingTask = new CacheManagingTask();
    this.duration = duration;
    start();
}

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);
}

From source file:com.fluxtion.learning.fx.utils.PriceOrderGenerator.java

public PriceOrderGenerator(BiasProcessor biasCheck) {
    this.biasCheck = biasCheck;
    scheduledExecutor = Executors.newSingleThreadScheduledExecutor();
}

From source file:org.jsecurity.session.mgt.ExecutorServiceSessionValidationScheduler.java

public void enableSessionValidation() {
    if (this.interval > 0l) {
        this.service = Executors.newSingleThreadScheduledExecutor();
        this.service.scheduleAtFixedRate(this, interval, interval, TimeUnit.MILLISECONDS);
        this.enabled = true;
    }//  ww  w .java  2  s  . c  om
}

From source file:io.joynr.messaging.bounceproxy.ControlledBounceProxyModule.java

@Provides
@Singleton
ScheduledExecutorService getScheduledExecutorService() {
    return Executors.newSingleThreadScheduledExecutor();
}

From source file:org.mule.transport.polling.schedule.FixedFrequencyScheduler.java

/**
 * <p>//from   w w  w.ja v  a  2 s.  c  om
 * Creates the {@link FixedFrequencyScheduler#executor} that is going to be used to launch schedules
 * </p>
 */
@Override
public void initialise() throws InitialisationException {
    try {
        lifecycleManager.fireInitialisePhase(new LifecycleCallback<Scheduler>() {
            @Override
            public void onTransition(String phaseName, Scheduler object) throws MuleException {
                executor = Executors.newSingleThreadScheduledExecutor();
            }
        });
    } catch (MuleException e) {
        throw new InitialisationException(e, this);
    }

}

From source file:com.hp.autonomy.hod.client.api.HavenOnDemandServiceITCase.java

@Override
@Before//w ww.j  a va 2 s .  co m
public void setUp() {
    super.setUp();

    havenOnDemandService = new HavenOnDemandServiceImpl(getConfig());
    scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
    jobService = new JobServiceImpl<>(getConfig(), MapJobStatus.class);
}