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, ThreadFactory threadFactory) 

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:me.bulat.jivr.webmin.consul.service.ConsulServiceImpl.java

@Autowired
public ConsulServiceImpl(final ConsulManager consul) {
    this.consul = consul;
    this.healthCheck = Executors.newScheduledThreadPool(1, new ThreadFactory() {
        @Override/*w w  w. jav  a  2  s  . co m*/
        public Thread newThread(Runnable r) {
            return new Thread(r, "JIVR-WEB-HEALTH-SERVICE");
        }
    });
}

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From source file:org.wso2.carbon.throttle.core.ThrottleReplicator.java

public ThrottleReplicator() {

    String replicatorThreads = System.getProperty("throttling.pool.size");
    if (replicatorThreads != null) {
        replicatorPoolSize = Integer.parseInt(replicatorThreads);
    }/*from  w w w . j  a v  a2s. com*/
    log.debug("Replicator pool size set to " + replicatorPoolSize);
    ScheduledExecutorService executor = Executors.newScheduledThreadPool(replicatorPoolSize,
            new ThreadFactory() {
                public Thread newThread(Runnable r) {
                    Thread t = new Thread(r);
                    t.setName("Throttle Replicator - " + replicatorCount++);
                    return t;
                }
            });
    String throttleFrequency = System.getProperty("throttling.replication.frequency");
    if (throttleFrequency == null) {
        throttleFrequency = "50";
    }
    log.debug("Throttling Frequency set to " + throttleFrequency);
    String maxKeysToReplicate = System.getProperty("throttling.keys.to.replicate");
    if (maxKeysToReplicate != null) {
        keysToReplicate = Integer.parseInt(maxKeysToReplicate);
    }
    log.debug("Max keys to Replicate " + keysToReplicate);
    for (int i = 0; i < replicatorPoolSize; i++) {
        executor.scheduleAtFixedRate(new ReplicatorTask(), Integer.parseInt(throttleFrequency),
                Integer.parseInt(throttleFrequency), TimeUnit.MILLISECONDS);
    }
}

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From source file:org.apache.synapse.commons.throttle.core.ThrottleReplicator.java

public ThrottleReplicator() {

    String replicatorThreads = System.getProperty("throttling.pool.size");
    if (replicatorThreads != null) {
        replicatorPoolSize = Integer.parseInt(replicatorThreads);
    }/* w  ww . ja va2  s.  com*/
    log.debug("Replicator pool size set to " + replicatorPoolSize);
    ScheduledExecutorService executor = Executors.newScheduledThreadPool(replicatorPoolSize,
            new ThreadFactory() {
                @Override
                public Thread newThread(Runnable r) {
                    Thread t = new Thread(r);
                    t.setName("Throttle Replicator - " + replicatorCount++);
                    return t;
                }
            });
    String throttleFrequency = System.getProperty("throttling.replication.frequency");
    if (throttleFrequency == null) {
        throttleFrequency = "50";
    }
    log.debug("Throttling Frequency set to " + throttleFrequency);
    String maxKeysToReplicate = System.getProperty("throttling.keys.to.replicate");
    if (maxKeysToReplicate != null) {
        keysToReplicate = Integer.parseInt(maxKeysToReplicate);
    }
    log.debug("Max keys to Replicate " + keysToReplicate);
    for (int i = 0; i < replicatorPoolSize; i++) {
        executor.scheduleAtFixedRate(new ReplicatorTask(), Integer.parseInt(throttleFrequency),
                Integer.parseInt(throttleFrequency), TimeUnit.MILLISECONDS);
    }
}

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From source file:de.uni_koeln.spinfo.maalr.sigar.SigarWrapper.java

private static void initialize() {
    logger.info("Initializing...");
    String libBase = "/hyperic-sigar-1.6.5/sigar-bin/lib/";
    try {//from   w  w  w  . j  a  v a2s  . co  m
        String prefix = "libsigar";
        if (SystemUtils.IS_OS_WINDOWS) {
            prefix = "sigar";
        }
        String arch = getSystemArch();
        String suffix = getSystemSuffix();
        String resourceName = prefix + "-" + arch + "-" + suffix;

        logger.info("Native library: " + resourceName);

        String resource = libBase + resourceName;
        URL toLoad = SigarWrapper.class.getResource(resource);
        File home = new File(System.getProperty("user.home"));
        File libs = new File(home, ".maalr/libs/sigar");
        libs.mkdirs();
        File tmp = new File(libs, resourceName);
        tmp.deleteOnExit();
        FileOutputStream fos = new FileOutputStream(tmp);
        InputStream in = toLoad.openStream();
        int i;
        while ((i = in.read()) != -1) {
            fos.write(i);
        }
        in.close();
        fos.close();
        logger.info("Library copied to " + tmp.getAbsolutePath());
        String oldPath = System.getProperty("java.library.path");
        System.setProperty("java.library.path", oldPath + SystemUtils.PATH_SEPARATOR + libs.getAbsolutePath());
        logger.info("java.library.path updated: " + System.getProperty("java.library.path"));
        executors = Executors.newScheduledThreadPool(1, new ThreadFactory() {

            public Thread newThread(Runnable r) {
                Thread t = new Thread(r);
                t.setDaemon(true);
                return t;
            }
        });
        logger.info("Initialization completed.");
    } catch (Exception e) {
        logger.error("Failed to initialize!", e);
    }
}

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From source file:com.seyren.core.service.schedule.CheckScheduler.java

@Inject
public CheckScheduler(ChecksStore checksStore, CheckRunnerFactory checkRunnerFactory,
        SeyrenConfig seyrenConfig) {/*from  w w  w.ja v a2 s.c om*/
    this.checksStore = checksStore;
    this.checkRunnerFactory = checkRunnerFactory;
    this.executor = Executors.newScheduledThreadPool(seyrenConfig.getNoOfThreads(),
            new ThreadFactoryBuilder().setNameFormat("seyren.check-scheduler-%s").setDaemon(false).build());
    this.instanceIndex = seyrenConfig.getCheckExecutorInstanceIndex();
    this.totalWorkers = seyrenConfig.getCheckExecutorTotalInstances();
    this.checkExecutionTimeoutSeconds = seyrenConfig.getMaxCheckExecutionTimeInSeconds();
}

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From source file:org.opendaylight.controller.netconf.ssh.osgi.NetconfSSHActivator.java

@Override
public void start(final BundleContext bundleContext) throws IOException {
    minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
        @Override/*  w w  w.  java 2s .c o m*/
        public Thread newThread(final Runnable r) {
            return new Thread(r, "netconf-ssh-server-mina-timers");
        }
    });
    clientGroup = new NioEventLoopGroup();
    nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
    server = startSSHServer(bundleContext);
}

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From source file:io.gravitee.gateway.services.healthcheck.HealthCheckService.java

@Override
protected void doStart() throws Exception {
    super.doStart();

    eventManager.subscribeForEvents(this, ReactorEvent.class);

    executorService = Executors.newScheduledThreadPool(threads, new ThreadFactory() {
        private int counter = 0;
        private String prefix = "healthcheck";

        public Thread newThread(Runnable r) {
            return new Thread(r, prefix + '-' + counter++);
        }//from   ww w  .  ja  v  a 2 s .c  o m
    });
}

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From source file:com.jkoolcloud.tnt4j.utils.TimeService.java

/**
 * Schedule automatic clock synchronization with NTP and internal clocks
 *
 */// ww w.  j a  va2  s .com
private static synchronized void scheduleUpdates() {
    if (scheduler == null) {
        scheduler = Executors.newScheduledThreadPool(1, new TimeServiceThreadFactory("TimeService/clock-sync"));
        clockSyncTask = new ClockDriftMonitorTask(logger);
        scheduler.submit(clockSyncTask);
    }
}

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From source file:org.apache.hadoop.hive.ql.txn.AcidHouseKeeperService.java

@Override
public void start(HiveConf hiveConf) throws Exception {
    HiveTxnManager mgr = TxnManagerFactory.getTxnManagerFactory().getTxnManager(hiveConf);
    if (!mgr.supportsAcid()) {
        LOG.info(AcidHouseKeeperService.class.getName() + " not started since " + mgr.getClass().getName()
                + " does not support Acid.");
        return;//there are no transactions in this case
    }//from   w  w  w . j ava  2  s.  c  o  m
    pool = Executors.newScheduledThreadPool(1, new ThreadFactory() {
        private final AtomicInteger threadCounter = new AtomicInteger();

        @Override
        public Thread newThread(Runnable r) {
            return new Thread(r, "DeadTxnReaper-" + threadCounter.getAndIncrement());
        }
    });
    TimeUnit tu = TimeUnit.MILLISECONDS;
    pool.scheduleAtFixedRate(new TimedoutTxnReaper(hiveConf, this),
            hiveConf.getTimeVar(HiveConf.ConfVars.HIVE_TIMEDOUT_TXN_REAPER_START, tu),
            hiveConf.getTimeVar(HiveConf.ConfVars.HIVE_TIMEDOUT_TXN_REAPER_INTERVAL, tu),
            TimeUnit.MILLISECONDS);
    LOG.info("Started " + this.getClass().getName() + " with delay/interval = "
            + hiveConf.getTimeVar(HiveConf.ConfVars.HIVE_TIMEDOUT_TXN_REAPER_START, tu) + "/"
            + hiveConf.getTimeVar(HiveConf.ConfVars.HIVE_TIMEDOUT_TXN_REAPER_INTERVAL, tu) + " " + tu);
}

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From source file:com.meltmedia.dropwizard.etcd.cluster.ClusterProcessorIT.java

@Before
public void setUp() throws Exception {
    ObjectMapper mapper = new ObjectMapper();
    executor = Executors.newScheduledThreadPool(4, Executors.defaultThreadFactory());
    lifecycle = mock(ClusterProcessLifecycle.class);

    service = ClusterProcessor.<NodeData>builder().withMapper(mapper)
            .withDirectory(factoryRule.getFactory().newDirectory("/jobs", new TypeReference<ClusterProcess>() {
            })).withLifecycleFactory(d -> lifecycle).withNodeId("1").withType(new TypeReference<NodeData>() {
            }).build();//from  w  ww  . j av a  2s.com

    dao = new EtcdDirectoryDao<ClusterProcess>(etcdClientSupplier::getClient, "/test/jobs", mapper,
            new TypeReference<ClusterProcess>() {
            });

    service.start();
}

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