Example usage for java.util.concurrent Executors newSingleThreadExecutor

Introduction

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

Prototype

public static ExecutorService newSingleThreadExecutor(ThreadFactory threadFactory) 

Source Link

Document

Creates an Executor that uses a single worker thread operating off an unbounded queue, and uses the provided ThreadFactory to create a new thread when needed.

Usage

From source file:com.clustercontrol.agent.SendQueue.java

/**
 * ????<BR>//  w ww  . ja  v a 2s .c o  m
 * 
 * ?????????<BR>
 * ??????
 * @param msg
 */
public boolean put(Object info) {
    m_log.debug("put() start : " + info.getClass().getCanonicalName());

    while (!ReceiveTopic.isHistoryClear()) {
        m_log.debug("put() while (!ReceiveTopic.isHistoryClear()) is true");

        boolean sendQueueStatus = false;
        ExecutorService es = null;
        Future<Boolean> task = null;
        try {
            String id = "";
            // Executor??
            SenderThreadFactory threadFactory = new SenderThreadFactory(id);
            es = Executors.newSingleThreadExecutor(threadFactory);

            // Queue??
            // ?Queue??????????????????
            // Future.get()????????
            m_log.debug("put() submit");
            task = es.submit(new Sender(info));
            sendQueueStatus = task.get(SEND_TIMEOUT, TimeUnit.MILLISECONDS);

        } catch (Exception e) {
            // Queue?????????????Future.get()???????
            // ????

            // ?
            m_log.warn("put() : Failed to connect to MGR " + e.getMessage(), e);

        } finally {
            // 
            if (task != null) {
                task.cancel(true);
            }

            if (es != null) {
                es.shutdown();
            }
            m_log.debug("put() end    : " + info.getClass().getCanonicalName());
        }

        // ??????????sleep????
        // Queue????????
        if (sendQueueStatus) {
            m_log.debug("put() return true : " + info.getClass().getCanonicalName());
            return true;
        } else {
            // sleep???QueueConnection?QueueSession ??
            try {
                m_log.debug("put() reput interval sleep: " + m_sendQueueReconnectionInterval + " sec");
                Thread.sleep(m_sendQueueReconnectionInterval);
            } catch (InterruptedException e1) {
                m_log.error("put() reput interval sleep: ", e1);
            }
        }
    } // End While Loop
    return false;
}

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From source file:io.pivotal.receptor.events.EventDispatcher.java

public EventDispatcher(String url) {
    Assert.hasText(url, "URL is required");
    this.url = url;
    this.backgroundExecutor = Executors
            .newSingleThreadExecutor(new CustomizableThreadFactory("receptor-event-subscriber-"));
    this.dispatchingExecutor = Executors
            .newCachedThreadPool(new CustomizableThreadFactory("receptor-event-dispatcher-"));
}

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From source file:com.ebay.cloud.cms.sysmgmt.monitor.metrics.MongoMetric.java

public MongoMetric(MongoDataSource dataSource, int period, int waitLimit) {
    this.dataSource = dataSource;
    this.period = period;
    this.listWaitPeroid = waitLimit;
    executor = Executors.newSingleThreadExecutor(DaemonThreadFactory.getInstance());
    snapshot();//  www. j  a v  a 2s . co m
}

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From source file:net.sf.jacclog.service.importer.internal.queue.LogFileQueueImporterObserver.java

public LogFileQueueImporterObserver(final LogEntryImportService<ReadonlyLogEntry> service) {
    if (service == null) {
        throw new IllegalArgumentException("Argument 'service' must be not null.");
    }//from  w w w  .  j av  a2  s  .  c  o m

    this.service = service;

    final BasicThreadFactory factory = new BasicThreadFactory.Builder()
            // attributes
            .namingPattern("file-importer-%d").daemon(true).priority(Thread.MIN_PRIORITY)
            .uncaughtExceptionHandler(new UncaughtExceptionHandler()).build();
    executor = Executors.newSingleThreadExecutor(factory);
}

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From source file:com.twitter.hbc.httpclient.BasicClientTest.java

public BasicClientTest() {
    ThreadFactory threadFactory = new ThreadFactoryBuilder().setDaemon(true)
            .setNameFormat("hosebird-client-unit-test-%d").build();
    executorService = Executors.newSingleThreadExecutor(threadFactory);
}

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From source file:com.techcavern.pircbotz.hooks.managers.BackgroundListenerManager.java

public void addListener(Listener listener, boolean isBackground) {
    if (!isBackground)
        super.addListener(listener);
    else {/*ww  w  . j av a2s.  c  o  m*/
        BasicThreadFactory factory = new BasicThreadFactory.Builder().namingPattern("backgroundPool"
                + managerNumber + "-backgroundThread" + backgroundCount.getAndIncrement() + "-%d").daemon(true)
                .build();
        backgroundListeners.put(listener, Executors.newSingleThreadExecutor(factory));
    }
}

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From source file:com.clustercontrol.winsyslog.SyslogReceiver.java

private ExecutorService createExecutorService(final String name) {
    ExecutorService executor = Executors.newSingleThreadExecutor(new ThreadFactory() {
        @Override/*from w  ww.  j  a v a 2 s  .  com*/
        public Thread newThread(Runnable r) {
            return new Thread(r, name);
        }
    });
    return executor;
}

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From source file:gobblin.cluster.StreamingJobConfigurationManager.java

public StreamingJobConfigurationManager(EventBus eventBus, Config config, MutableJobCatalog jobCatalog) {
    super(eventBus, config);

    this.stopTimeoutSeconds = ConfigUtils.getLong(config, GobblinClusterConfigurationKeys.STOP_TIMEOUT_SECONDS,
            GobblinClusterConfigurationKeys.DEFAULT_STOP_TIMEOUT_SECONDS);

    this.fetchJobSpecExecutor = Executors.newSingleThreadExecutor(
            ExecutorsUtils.newThreadFactory(Optional.of(LOGGER), Optional.of("FetchJobSpecExecutor")));

    String specExecutorInstanceConsumerClassName = ConfigUtils.getString(config,
            GobblinClusterConfigurationKeys.SPEC_EXECUTOR_INSTANCE_CONSUMER_CLASS_KEY,
            GobblinClusterConfigurationKeys.DEFAULT_STREAMING_SPEC_EXECUTOR_INSTANCE_CONSUMER_CLASS);

    LOGGER.info("Using SpecExecutorInstanceConsumer ClassNameclass name/alias "
            + specExecutorInstanceConsumerClassName);

    try {//from  w ww .  j  a  va2  s . c o  m
        ClassAliasResolver<SpecExecutorInstanceConsumer> aliasResolver = new ClassAliasResolver<>(
                SpecExecutorInstanceConsumer.class);

        this.specExecutorInstanceConsumer = (SpecExecutorInstanceConsumer) GobblinConstructorUtils
                .invokeFirstConstructor(
                        Class.forName(aliasResolver.resolve(specExecutorInstanceConsumerClassName)),
                        ImmutableList.<Object>of(config, jobCatalog), ImmutableList.<Object>of(config));
    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException
            | ClassNotFoundException e) {
        throw new RuntimeException(
                "Could not construct SpecExecutorInstanceConsumer " + specExecutorInstanceConsumerClassName, e);
    }
}

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From source file:de.ks.flatadocdb.index.GlobalIndex.java

public GlobalIndex(Repository repository, MetaModel metaModel) {
    this(repository, metaModel,
            Executors.newSingleThreadExecutor(new ThreadFactoryBuilder().setDaemon(true).build()));
}

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From source file:ch.algotrader.marketdata.MarketDataSubscriber.java

public MarketDataSubscriber(final EventDispatcher eventDispatcher, final LookupService lookupService,
        final MarketDataService marketDataService, final Map<String, String> sessionToFeedTypeMap) {

    Validate.notNull(eventDispatcher, "EventDispatcher is null");
    Validate.notNull(lookupService, "LookupService is null");
    Validate.notNull(marketDataService, "MarketDataService is null");

    this.eventDispatcher = eventDispatcher;
    this.lookupService = lookupService;
    this.marketDataService = marketDataService;
    this.sessionToFeedTypeMap = new ConcurrentHashMap<>(sessionToFeedTypeMap);
    this.executorService = Executors
            .newSingleThreadExecutor(new BasicThreadFactory("Market-data-subscriber-thread", true));
}

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