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.wso2.iot.refarch.rpi.agent.Publisher.java

private void start(int updateInterval) {
    ScheduledExecutorService dhtReaderScheduler = Executors.newScheduledThreadPool(1);
    dhtReaderScheduler.scheduleWithFixedDelay(new MonitoringTask(dhtSensor), 0, updateInterval,
            TimeUnit.SECONDS);//w  w  w  .  j  a  v  a  2s  .  c o  m
}

From source file:com.kixeye.scout.eureka.EurekaServiceDiscoveryClient.java

/**
 * Creates a discovery client with default scheduler.
 * /*from ww w  .  ja v a  2 s.co m*/
 * @param eurekaServiceUrl the url of the eureka instance, i.e. http://host:port/eureka/v2
 * @param refreshRate
 * @param refreshRateTimeUnit
 */
public EurekaServiceDiscoveryClient(String eurekaServiceUrl, long refreshRate, TimeUnit refreshRateTimeUnit) {
    this(eurekaServiceUrl, refreshRate, refreshRateTimeUnit, Executors.newScheduledThreadPool(1));
}

From source file:org.asciidoctor.maven.AsciidoctorRefreshMojo.java

private void startUpdater() {
    updaterScheduler = Executors.newScheduledThreadPool(1);

    // we prevent refreshing more often than all 200ms and we refresh at least once/s
    // NOTE1: it is intended to avoid too much time space between file polling and re-rendering
    // NOTE2: if nothing to refresh it does nothing so all is fine
    updaterScheduler.scheduleAtFixedRate(new Updater(needsUpdate, this), 0,
            Math.min(1000, Math.max(200, interval / 2)), TimeUnit.MILLISECONDS);
}

From source file:org.sbs.goodcrawler.fetcher.FailedPageBackup.java

public void init() {
    ignoreFailedPage = Boolean.getBoolean(config.getString(GlobalConstants.ignoreFailedPages, "true"));
    if (!ignoreFailedPage) {
        Queue = new LinkedBlockingDeque<Page>(config.getInt(GlobalConstants.failedPagesQueueSize, 2000));
        // //from w w w. j a  v a 2s. co m
        BackupFailedPages backup = new BackupFailedPages();
        Thread failedPagesBackupThread = new Thread(backup, "failed-pages-backup-thread");
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
        scheduler.scheduleAtFixedRate(failedPagesBackupThread, 60, 60, TimeUnit.SECONDS);
    }
}

From source file:com.gigaspaces.blueprint.frauddetection.feeder.Feeder.java

public void afterPropertiesSet() throws Exception {
    log.info("--- STARTING FEEDER WITH CYCLE [" + defaultDelay + "]");
    executorService = Executors.newScheduledThreadPool(1);
    feederTask = new FeederTask();
    sf = executorService.scheduleAtFixedRate(feederTask, defaultDelay, defaultDelay, TimeUnit.MILLISECONDS);
}

From source file:ai.grakn.engine.backgroundtasks.InMemoryTaskManager.java

private InMemoryTaskManager() {
    instantiatedTasks = new ConcurrentHashMap<>();
    stateStorage = InMemoryStateStorage.getInstance();
    stateUpdateLock = new ReentrantLock();

    ConfigProperties properties = ConfigProperties.getInstance();
    schedulingService = Executors.newScheduledThreadPool(1);
    executorService = Executors.newFixedThreadPool(properties.getAvailableThreads());
}

From source file:scouter.plugin.server.alert.email.EmailPlugin.java

public EmailPlugin() {
    if (ai.incrementAndGet() == 1) {
        ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);

        //thread count check
        executor.scheduleAtFixedRate(new Runnable() {
            @Override/*w w w. ja v  a 2 s . c o  m*/
            public void run() {
                for (int objHash : javaeeObjHashList) {
                    try {
                        if (AgentManager.isActive(objHash)) {
                            ObjectPack objectPack = AgentManager.getAgent(objHash);
                            MapPack mapPack = new MapPack();
                            mapPack.put("objHash", objHash);
                            mapPack = AgentCall.call(objectPack, RequestCmd.OBJECT_THREAD_LIST, mapPack);

                            final int LIMIT = 30; //?  . ? 20 ?    30 ? ?

                            //  .   ?  thread exceed threshold  ?? .
                            int threadCountThreshold = conf.getInt("ext_plugin_thread_count_threshold", LIMIT);
                            int threadCount = mapPack.getList("name").size();

                            /*   ? */
                            if (threadCountThreshold != 0 && threadCount > threadCountThreshold) {
                                AlertPack ap = new AlertPack();

                                //  ? 2  FATAL, ? WARN
                                if (threadCount > threadCountThreshold * 2)
                                    ap.level = AlertLevel.FATAL;
                                else
                                    ap.level = AlertLevel.WARN;

                                ap.objHash = objHash;
                                ap.title = "  !";
                                ap.message = objectPack.objName + "?   " + threadCount
                                        + ", (" + LIMIT + ") !";
                                ap.time = System.currentTimeMillis();
                                ap.objType = objectPack.objType;

                                long limitTime = conf.getLong("ext_plugin_thread_limit_time", 120000); //2
                                long safeTime = conf.getLong("ext_plugin_thread_safe_time", 180000); //3

                                //? ? objectPack.objName ? 
                                if (objectContainer.sendAlert(ap, objectPack.objName, limitTime, safeTime))
                                    alert(ap);
                            }
                        }
                    } catch (Exception e) {
                        // ignore
                    }
                }
            }
        }, 0, 5, TimeUnit.SECONDS); //5 
    }
}

From source file:io.nirvagi.utils.servlet.RecorderServlet.java

public void init() {
    recorder = new MonteScreenRecorder();
    executorService = Executors.newScheduledThreadPool(1);
}

From source file:org.ebayopensource.scc.impl.DefaultPolicyManagerTest.java

@Test
public void testMergeGlobalPolicyJsonConfigIntoJCSProps() {
    String jsonConfig = "{" + "\"maxCount\": \"123\"," + "\"timeToLive\": 123456," + "\"update\" : \"LRU\","
            + "\"cacheDir\" : \"./cache\"" + "}";
    m_configMap.clear();//w  ww.jav  a2s.  com
    m_configMap.putAll(new Gson().fromJson(jsonConfig, Map.class));

    new DefaultPolicyManager(m_appConfigMock, m_keyGenMock, Executors.newScheduledThreadPool(1));

    ArgumentCaptor<AppConfiguration> appConfigArgCaptor = ArgumentCaptor.forClass(AppConfiguration.class);
    ArgumentCaptor<Properties> mergedPropsArg = ArgumentCaptor.forClass(Properties.class);
    ArgumentCaptor<ScheduledExecutorService> scheduledServiceCaptor = ArgumentCaptor
            .forClass(ScheduledExecutorService.class);
    Mockito.verify(m_jcsCacheMock).init(appConfigArgCaptor.capture(), mergedPropsArg.capture(),
            scheduledServiceCaptor.capture());

    Properties mergedProps = mergedPropsArg.getValue();
    assertThat(mergedProps, is(notNullValue()));
    mergedProps.getProperty("jcs.default.cacheattributes.MaxObjects");
    assertThat(mergedProps.getProperty("jcs.default.cacheattributes.MaxObjects"), is("123"));
    assertThat(mergedProps.getProperty("jcs.default.elementattributes.MaxLife"), is("123456"));
    assertThat(mergedProps.getProperty("jcs.default.cacheattributes.MemoryCacheName"),
            is("org.apache.commons.jcs.engine.memory.lru.LRUMemoryCache"));
    assertThat(mergedProps.getProperty("jcs.auxiliary.DC.attributes.DiskPath"), is("./cache"));
}

From source file:io.syndesis.controllers.integration.IntegrationController.java

@PostConstruct
public void start() {
    executor = Executors.newSingleThreadExecutor();
    scheduler = Executors.newScheduledThreadPool(1);
    scanIntegrationsForWork();//w  ww .  j a  v a  2 s .c  o m

    eventBus.subscribe("integration-controller", getChangeEventSubscription());
}