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:cherry.foundation.mail.SendMailBatchTest.java

@Test
public void testMailSendException() throws Exception {

    final File shutdownTrigger = new File("./shutdownTrigger.txt");
    shutdownTrigger.deleteOnExit();/*from   w ww. jav a2s  . c  o m*/
    Callable<Boolean> callable = new Callable<Boolean>() {
        @Override
        public Boolean call() {
            try (FileOutputStream os = new FileOutputStream(shutdownTrigger)) {
                return true;
            } catch (IOException ex) {
                return false;
            }
        }
    };

    ScheduledExecutorService service = Executors.newScheduledThreadPool(1);
    ScheduledFuture<Boolean> future = service.schedule(callable, 5L, TimeUnit.SECONDS);

    SendMailBatch batch = create(1000L, shutdownTrigger, true);
    ExitStatus status = batch.execute();

    assertEquals(ExitStatus.NORMAL, status);
    assertTrue(future.get().booleanValue());
    assertFalse(shutdownTrigger.exists());

    verify(bizDateTime, atLeastOnce()).now();
    verify(mailSendHandler, atLeastOnce()).listMessage((LocalDateTime) eq(null));
    verify(mailSendHandler, atLeastOnce()).sendMessage(eq(1L));
    verify(mailSendHandler, never()).sendMessage(eq(2L));
    verify(mailSendHandler, never()).sendMessage(eq(3L));
}

From source file:stargate.drivers.hazelcast.schedule.HazelcastScheduleDriver.java

@Override
public synchronized void startDriver() throws IOException {
    try {// w  ww .j a v a 2  s . com
        this.driverGroup = HazelcastCoreDriver.getInstance();
    } catch (DriverNotInstantiatedException ex) {
        throw new IOException(ex);
    }

    this.taskThreads = this.config.getTaskThreads();
    this.threadPool = Executors.newScheduledThreadPool(this.taskThreads);
}

From source file:org.apache.hama.bsp.BSPTask.java

public BSPTask(BSPJobID jobId, String jobFile, TaskAttemptID taskid, int partition, String splitClass,
        BytesWritable split) {//  w  w w  . jav a  2s  .  co  m
    this.jobId = jobId;
    this.jobFile = jobFile;
    this.taskId = taskid;
    this.partition = partition;

    this.splitClass = splitClass;
    this.split = split;

    this.pingService = Executors.newScheduledThreadPool(1);
}

From source file:org.wicketstuff.nashorn.resource.NashornResourceReference.java

/**
 * Creates a nashorn resource reference with the given name
 * /*from   w ww  . ja v  a2  s.  c o  m*/
 * @param name
 *            the name of the nashorn resource reference
 * @param coreSize
 *            the core size of the script execution pool
 * @param delay
 *            the delay until a script execution is going to be terminated
 * @param delayUnit
 *            the unit until a script execution is going to be terminated
 * @param wait
 *            how long to w8 until the next memory check occurs
 * @param waitUnit
 *            the unit until the next memory check occurs
 * @param maxScriptMemorySize
 *            the memory usage the script process should use - else it will be aborted
 */
public NashornResourceReference(String name, int coreSize, long delay, TimeUnit delayUnit, long wait,
        TimeUnit waitUnit, long maxScriptMemorySize) {
    super(name);
    scheduledExecutorService = Executors.newScheduledThreadPool(coreSize);
    this.delay = delay;
    this.delayUnit = delayUnit;
    this.wait = wait;
    this.waitUnit = waitUnit;
    this.maxScriptMemorySize = maxScriptMemorySize;
}

From source file:io.fabric8.forge.ipaas.repository.NexusConnectionRepository.java

@PostConstruct
public void start() {
    if (started.compareAndSet(false, true)) {
        System.out.println("NexusConnectionRepository is already started");
        return;//  ww  w.  ja v  a2s.  co m
    }

    System.out.println("Starting NexusConnectionRepository");

    if (nexusUrl == null || nexusUrl.isEmpty()) {
        System.out.println("Nexus service not found. Indexing Nexus is not enabled!");
        return;
    }

    System.out.println("Indexing Nexus every " + delay + " seconds interval");
    executorService = Executors.newScheduledThreadPool(1);

    executorService.scheduleWithFixedDelay(() -> {
        try {
            System.out.println("Indexing Nexus " + nexusUrl + " +++ start +++");
            indexNexus();
        } catch (Throwable e) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            e.printStackTrace(pw);

            if (sw.toString().contains("UnknownHostException")) {
                // less noise if its unknown host
                System.err
                        .println("Error indexing Nexus " + nexusUrl + " due unknown hosts: " + e.getMessage());
            } else {
                System.err.println(
                        "Error indexing Nexus " + nexusUrl + " due " + e.getMessage() + "\n" + sw.toString());
            }
        } finally {
            System.out.println("Indexing Nexus " + nexusUrl + " +++ end +++");
        }
    }, 10, delay, TimeUnit.SECONDS);
}

From source file:com.zb.app.biz.service.impl.TravelCompanyServiceImpl.java

@PostConstruct
public void cronCache() {
    Result companyRegist = notifyService.regist(new NotifyListener() {

        @EventConfig(events = { EventType.companyAdd, EventType.companyDelete, EventType.companyUpdate })
        public void companyEvent(CompanyEvent event) {
            handle(event);/*from  w w  w  . j  a v  a  2 s  .co m*/
        }
    });
    if (companyRegist.isFailed()) {
        logger.error("TravelCompanyServiceImpl init companyRegist ?failed!");
    } else {
        logger.error("TravelCompanyServiceImpl init companyRegist ?success!");
    }

    ScheduledExecutorService newScheduledThreadPool = Executors.newScheduledThreadPool(1);
    newScheduledThreadPool.scheduleAtFixedRate(new Runnable() {

        @Override
        public void run() {
            try {
                init();
            } catch (Throwable e) {
                logger.error("init travelCompanyCacheMap error", e);
            }
        }

    }, 0, 12, TimeUnit.HOURS);
}

From source file:com.dtstack.jlogstash.decoder.MultilineDecoder.java

public void init(String pattern, String what, InputQueueList queuelist) {

    if (pattern == null || what == null) {
        logger.error("pattern and what must not be null.");
        System.exit(-1);//  w ww .ja  va2s  .  c o m
    }

    if (!"previous".equals(what) && !"next".equals(what)) {
        logger.error("parameter what must in [previous, next]");
        System.exit(-1);
    }

    this.inputQueueList = queuelist;

    logger.warn("MultilineDecoder param pattern:{}, what:{}, negate:{}.",
            new Object[] { pattern, what, negate });

    this.pattern = pattern;
    this.what = what;

    patternReg = Pattern.compile(this.pattern);
    scheduleExecutor = Executors.newScheduledThreadPool(1);
    scheduleExecutor.scheduleWithFixedDelay(new FlushMonitor(), flushInterval, flushInterval,
            TimeUnit.MILLISECONDS);
}

From source file:org.apache.pulsar.io.hbase.sink.HbaseAbstractSink.java

@Override
public void open(Map<String, Object> config, SinkContext sinkContext) throws Exception {
    hbaseSinkConfig = HbaseSinkConfig.load(config);
    Preconditions.checkNotNull(hbaseSinkConfig.getZookeeperQuorum(), "zookeeperQuorum property not set.");
    Preconditions.checkNotNull(hbaseSinkConfig.getZookeeperClientPort(),
            "zookeeperClientPort property not set.");
    Preconditions.checkNotNull(hbaseSinkConfig.getZookeeperZnodeParent(),
            "zookeeperZnodeParent property not set.");
    Preconditions.checkNotNull(hbaseSinkConfig.getTableName(), "hbase tableName property not set.");

    getTable(hbaseSinkConfig);/*from w w  w.j av a2  s  .c o  m*/
    tableDefinition = getTableDefinition(hbaseSinkConfig);

    batchTimeMs = hbaseSinkConfig.getBatchTimeMs();
    batchSize = hbaseSinkConfig.getBatchSize();
    incomingList = Lists.newArrayList();
    flushExecutor = Executors.newScheduledThreadPool(1);
    flushExecutor.scheduleAtFixedRate(() -> flush(), batchTimeMs, batchTimeMs, TimeUnit.MILLISECONDS);
}

From source file:com.vmware.thinapp.manualmode.util.JobMonitorService.java

public JobMonitorService() {
    perfTasks = new ConcurrentHashMap<JobMonitorTicket, ScheduledFuture<?>>();
    executor = Executors.newScheduledThreadPool(MIN_PERF_TASK_THREADS);
}

From source file:org.tupelo_schneck.electric.ted.TedImporter.java

@Override
public void startup() {
    if (options.longImportInterval > 0) {
        longImportTask = repeatedlyImport(3600, true, options.longImportInterval);
    }//w ww .j a  v a  2  s.  c  o m
    if (options.importInterval > 0) {
        shortImportTask = repeatedlyImport(options.importInterval + options.importOverlap, false,
                options.importInterval);
    }
    if (options.voltAmpereImportIntervalMS > 0) {
        ExecutorService voltAmpereExecServ;
        if (options.kvaThreads == 0)
            voltAmpereExecServ = shortImportTask;
        else
            voltAmpereExecServ = Executors.newScheduledThreadPool(options.kvaThreads);
        voltAmpereImportTask = voltAmpereImporter(voltAmpereExecServ, options.voltAmpereImportIntervalMS);
    }
}