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:com.vadimfrolov.duorem.MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Create action bar as a toolbar
    Toolbar toolbar = (Toolbar) findViewById(R.id.main_toolbar);
    setSupportActionBar(toolbar);/*from   ww  w.  ja  va  2s.  c  o m*/

    mPrefs = PreferenceManager.getDefaultSharedPreferences(this);
    mPrefs.registerOnSharedPreferenceChangeListener(this);

    mViewName = (TextView) findViewById(R.id.id);
    // mViewAddress = (TextView) findViewById(R.id.content);
    mIconAlive = (ImageView) findViewById(R.id.alive);
    mBtnTogglePower = (Button) findViewById(R.id.btn_toggle_power);
    mBtnRestart = (Button) findViewById(R.id.btn_restart);
    mViewStatus = (TextView) findViewById(R.id.text_status);

    mViewStatus.setMovementMethod(new ScrollingMovementMethod());

    Gson gson = new Gson();
    String targetJson = mPrefs.getString(KEY_PREF_TARGET, "");
    if (targetJson.length() > 0) {
        mTarget = gson.fromJson(targetJson, HostBean.class);
    }

    mSshTasks = new Stack<>();
    mDelegate = this;
    mIsConnected = false;

    mBtnRestart.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            stopTargetPolling();

            RemoteCommand cmd = new RemoteCommand(mTarget, RemoteCommand.SSH);
            cmd.command = "sudo shutdown -r now";
            mSshTasks.push(new RemoteAsyncTask(mDelegate));
            mSshTasks.peek().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, cmd);

            logForUser(getResources().getString(R.string.reboot_sent));
        }
    });
    mBtnTogglePower.setOnClickListener(mPowerActor);

    // create a pool with only 3 threads
    mSch = (ScheduledThreadPoolExecutor) Executors.newScheduledThreadPool(3);
    mSch.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
}

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From source file:com.netflix.dyno.queues.redis.RedisDynoQueue.java

public RedisDynoQueue(String redisKeyPrefix, String queueName, Set<String> allShards, String shardName,
        ExecutorService dynoCallExecutor) {
    this.redisKeyPrefix = redisKeyPrefix;
    this.queueName = queueName;
    this.allShards = allShards.stream().collect(Collectors.toList());
    this.shardName = shardName;
    this.messageStoreKey = redisKeyPrefix + ".MESSAGE." + queueName;
    this.myQueueShard = getQueueShardKey(queueName, shardName);

    ObjectMapper om = new ObjectMapper();
    om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    om.configure(DeserializationFeature.FAIL_ON_IGNORED_PROPERTIES, false);
    om.configure(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES, false);
    om.setSerializationInclusion(Include.NON_NULL);
    om.setSerializationInclusion(Include.NON_EMPTY);
    om.disable(SerializationFeature.INDENT_OUTPUT);

    this.om = om;
    this.monitor = new QueueMonitor(queueName, shardName);
    this.prefetchedIds = new LinkedBlockingQueue<>();
    this.executorService = dynoCallExecutor;

    Executors.newScheduledThreadPool(1).scheduleAtFixedRate(() -> processUnacks(), unackScheduleInMS,
            unackScheduleInMS, TimeUnit.MILLISECONDS);
    Executors.newScheduledThreadPool(1).scheduleAtFixedRate(() -> prefetchIds(), 0, 10, TimeUnit.MILLISECONDS);

    logger.info(RedisDynoQueue.class.getName() + " is ready to serve " + queueName);

}

---

From source file:com.turn.griffin.control.GriffinControlManager.java

public GriffinControlManager(GriffinModule griffinModule) {

    Preconditions.checkNotNull(griffinModule);
    this.griffinModule = griffinModule;

    Preconditions.checkState(!StringUtils.isBlank(GriffinModule.ZOOKEEPER), "Zookeeper is not defined");
    Preconditions.checkState(!StringUtils.isBlank(GriffinModule.BROKERS), "Brokers are not defined");
    String zookeeper = GriffinModule.ZOOKEEPER;
    String brokers = GriffinModule.BROKERS;

    /* Start the consumer before the producer to trigger topic creation */
    /* Start control channel consumer */
    this.incomingCntrlMsgQueue = new ArrayBlockingQueue<>(CONTROL_TOPIC_CONSUMER_QUEUE_SIZE);

    /* The groupId should be unique to avoid conflict with other consumers running on this machine */
    String consumerGroupId = GriffinKafkaTopicNameUtil
            .getControlTopicConsumerGroupId(new String[] { getMyServerId(), this.getClass().getSimpleName() });
    this.controlConsumer = new GriffinConsumer(zookeeper, consumerGroupId,
            GriffinKafkaTopicNameUtil.getControlTopicNameForConsumer(), CONTROL_TOPIC_CONSUMER_THREADS,
            new Properties(), incomingCntrlMsgQueue);

    /* Start a producer for control messages */
    this.controlProducer = new GriffinProducer(brokers);

    /* Thread pool to process all control commands and messages */
    this.controlThreadPool = Executors.newScheduledThreadPool(CONTROL_THREAD_POOL_COUNT);

    /* Start resource discovery */
    scheduleControlJob(// w ww  .  ja va2s . c  om
            new GriffinResourceDiscoveryTask(this, GriffinResourceDiscoveryTask.Action.SEND_GLOBAL_FILE_INFO),
            new Random().nextInt(GriffinModule.RESOURCE_DISCOVERY_INTERVAL_MS), TimeUnit.MILLISECONDS);

    /* A thread to create suitable runnable for incoming control messages */
    scheduleControlJob(this, 0, TimeUnit.SECONDS);
}

---

From source file:org.sample.jms.SampleQueueSender.java

public void calculate() {

    Runnable messagePerSecond = new Runnable() {
        public void run() {
            log.error("Messages per second " + messageCount);
            messageCount = 0;//from   w w w  .j av  a 2  s .  c o m
        }
    };

    ScheduledExecutorService executor = Executors.newScheduledThreadPool(0);
    executor.scheduleAtFixedRate(messagePerSecond, 1, 1, TimeUnit.SECONDS);
}

---

From source file:io.gromit.uaparser.Parser.java

/**
 * Start schedule./*from  www .ja va  2s .  c  om*/
 *
 * @return the parser
 */
public Parser startSchedule() {
    scheduledExecutorService = Executors.newScheduledThreadPool(1);
    scheduledExecutorService.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            initialize(uaRegexYaml);
        }
    }, 0, 1, TimeUnit.HOURS);
    return this;
}

---

From source file:io.smartspaces.example.activity.externalproxy.webappproxy.SmartSpacesExternalProxyServlet.java

@Override
public void init() throws ServletException {
    threadPool = Executors.newScheduledThreadPool(100);
    log = new Jdk14Logger("goober");

    log.info("Starting proxy server");
    try {//from  w  w w  . j  av  a  2  s.c o  m
        super.init();

        final String contents = getFunctionContent("deviceorientation");

        mobileServer = new NettyWebServer("mobile-server", WEBSERVER_PORT_MOBILE, threadPool, log);
        mobileServer.addDynamicContentHandler(URL_PREFIX_MOBILE_CONTENT, true, new HttpDynamicRequestHandler() {
            @Override
            public void handle(HttpRequest request, HttpResponse response) {

                response.setContentType("text/html");
                try {
                    Files.copyStream(new ByteArrayInputStream(contents.getBytes()), response.getOutputStream(),
                            false);
                } catch (IOException e) {
                    log.error("Could not write response", e);
                }
            }
        });

        mobileWebSocketHandlerFactory = new MultipleConnectionWebServerWebSocketHandlerFactory(
                new MultipleConnectionWebSocketHandler() {

                    @Override
                    public void handleNewWebSocketConnection(String connectionId) {
                        log.info(
                                String.format("Got web socket connection from mobile device %s", connectionId));
                    }

                    @Override
                    public void handleWebSocketClose(String connectionId) {
                        log.info(String.format("Lost web socket connection from mobile device %s",
                                connectionId));
                    }

                    @Override
                    public void handleWebSocketReceive(String connectionId, Object d) {
                        @SuppressWarnings("unchecked")
                        Map<String, Object> data = (Map<String, Object>) d;
                        data.put("id", connectionId);

                        smartSpacesWebSocketHandlerFactory.sendJson(data);
                    }
                }, log);

        mobileServer.setWebSocketHandlerFactory(URL_PREFIX_WEBSOCKET_MOBILE, mobileWebSocketHandlerFactory);
        mobileServer.startup();

        smartSpacesServer = new NettyWebServer("smartspaces-server", WEBSERVER_PORT_SMARTSPACES, threadPool,
                log);

        smartSpacesWebSocketHandlerFactory = new MultipleConnectionWebServerWebSocketHandlerFactory(
                new MultipleConnectionWebSocketHandler() {

                    @Override
                    public void handleNewWebSocketConnection(String connectionId) {
                        log.info(String.format("Got web socket connection from Smart Spaces %s", connectionId));
                    }

                    @Override
                    public void handleWebSocketClose(String connectionId) {
                        log.info(
                                String.format("Lost web socket connection from Smart Spaces %s", connectionId));
                    }

                    @Override
                    public void handleWebSocketReceive(String connectionId, Object d) {
                        @SuppressWarnings("unchecked")
                        Map<String, Object> data = (Map<String, Object>) d;
                    }
                }, log);
        smartSpacesServer.setWebSocketHandlerFactory(URL_PREFIX_WEBSOCKET_SMARTSPACES,
                smartSpacesWebSocketHandlerFactory);

        smartSpacesServer.startup();

        log.info("Servers started");
    } catch (Exception e) {
        log.error("Could not start up proxy", e);
    }
}

---

From source file:swift.application.filesystem.cs.SwiftFuseClient.java

SwiftFuseClient(long expFile) {
    this.attributes = Collections.synchronizedMap(new HashMap<String, GetAttrOperation.Result>());
    this.expirationDateAttr = Collections.synchronizedMap(new HashMap<String, Long>());
    this.defaultExpirationAttr = expFile;
    this.dirs = Collections.synchronizedMap(new HashMap<String, GetDirOperation.Result>());
    this.expirationDateDir = Collections.synchronizedMap(new HashMap<String, Long>());
    this.defaultExpirationDir = expFile;

    this.threads = Executors.newFixedThreadPool(2);
    Executors.newScheduledThreadPool(2).scheduleWithFixedDelay(this.removeExpired(),
            this.defaultExpirationAttr / 2, this.defaultExpirationAttr, TimeUnit.MILLISECONDS);
}

---

From source file:org.construct_infrastructure.io.MessageReader.java

/**
 * Creates a new message reader that will operate over the given InputStream.
 * /*from  www  .j a v  a  2 s  . c  o  m*/
 * @param an_inputStream
 *           the InputStream on which to read messages.
 */
public MessageReader(final InputStream an_inputStream, ExecutorService an_executorService) {
    my_errorOccured = false;
    my_logger = Logger.getLogger(getClass().getName());
    my_logger.setLevel(Level.WARNING);
    my_inputStream = new BufferedInputStream(an_inputStream);
    my_messageList = new LinkedList();
    my_keepReading = true;
    an_executorService.execute(this);
    my_service_scheduler = Executors.newScheduledThreadPool(1);
    my_service_scheduler.scheduleWithFixedDelay(my_listenerMonitor, 0, FIVE_HUNDRED, TimeUnit.MILLISECONDS);
    my_timeout = TWO_MINS_IN_MS;
    my_stopwatch = new StopWatch();
    my_stopwatch.start();
}

---

From source file:interactivespaces.example.activity.externalproxy.webappproxy.InteractiveSpacesExternalProxyServlet.java

@Override
public void init() throws ServletException {
    threadPool = Executors.newScheduledThreadPool(100);
    log = new Jdk14Logger("goober");

    log.info("Starting proxy server");
    try {//  w ww. java2 s.  c om
        super.init();

        final String contents = getFunctionContent("deviceorientation");

        mobileServer = new NettyWebServer("mobile-server", WEBSERVER_PORT_MOBILE, threadPool, log);
        mobileServer.addDynamicContentHandler(URL_PREFIX_MOBILE_CONTENT, true, new HttpDynamicRequestHandler() {
            @Override
            public void handle(HttpRequest request, HttpResponse response) {

                response.setContentType("text/html");
                try {
                    Files.copyStream(new ByteArrayInputStream(contents.getBytes()), response.getOutputStream(),
                            false);
                } catch (IOException e) {
                    log.error("Could not write response", e);
                }
            }
        });

        mobileWebSocketHandlerFactory = new MultipleConnectionWebServerWebSocketHandlerFactory(
                new MultipleConnectionWebSocketHandler() {

                    @Override
                    public void handleNewWebSocketConnection(String connectionId) {
                        log.info(
                                String.format("Got web socket connection from mobile device %s", connectionId));
                    }

                    @Override
                    public void handleWebSocketClose(String connectionId) {
                        log.info(String.format("Lost web socket connection from mobile device %s",
                                connectionId));
                    }

                    @Override
                    public void handleWebSocketReceive(String connectionId, Object d) {
                        @SuppressWarnings("unchecked")
                        Map<String, Object> data = (Map<String, Object>) d;
                        data.put("id", connectionId);

                        interactiveSpacesWebSocketHandlerFactory.sendJson(data);
                    }
                }, log);

        mobileServer.setWebSocketHandlerFactory(URL_PREFIX_WEBSOCKET_MOBILE, mobileWebSocketHandlerFactory);
        mobileServer.startup();

        interactiveSpacesServer = new NettyWebServer("interactivespaces-server",
                WEBSERVER_PORT_INTERACTIVESPACES, threadPool, log);

        interactiveSpacesWebSocketHandlerFactory = new MultipleConnectionWebServerWebSocketHandlerFactory(
                new MultipleConnectionWebSocketHandler() {

                    @Override
                    public void handleNewWebSocketConnection(String connectionId) {
                        log.info(String.format("Got web socket connection from Interactive Spaces %s",
                                connectionId));
                    }

                    @Override
                    public void handleWebSocketClose(String connectionId) {
                        log.info(String.format("Lost web socket connection from Interactive Spaces %s",
                                connectionId));
                    }

                    @Override
                    public void handleWebSocketReceive(String connectionId, Object d) {
                        @SuppressWarnings("unchecked")
                        Map<String, Object> data = (Map<String, Object>) d;
                    }
                }, log);
        interactiveSpacesServer.setWebSocketHandlerFactory(URL_PREFIX_WEBSOCKET_INTERACTIVESPACES,
                interactiveSpacesWebSocketHandlerFactory);

        interactiveSpacesServer.startup();

        log.info("Servers started");
    } catch (Exception e) {
        log.error("Could not start up proxy", e);
    }
}

---

From source file:org.wso2.andes.kernel.AndesKernelBoot.java

/**
 * This will boot up all the components in Andes kernel and bring the server to working state
 *//*from ww  w .  j  a v  a 2 s.c o m*/
public static void initializeComponents() throws AndesException {
    isKernelShuttingDown = false;
    //loadConfigurations - done from outside
    //startAndesStores - done from outside
    int threadPoolCount = 1;
    andesRecoveryTaskScheduler = Executors.newScheduledThreadPool(threadPoolCount);
    expiryMessageDeletionTaskScheduler = Executors.newScheduledThreadPool(threadPoolCount);
    startHouseKeepingThreads();
    createDefinedProtocolArtifacts();
    syncNodeWithClusterState();
    registerMBeans();
    startThriftServer();
    Andes.getInstance().startSafeZoneUpdateWorkers();
    int slotDeletingWorkerCount = AndesConfigurationManager
            .readValue(AndesConfiguration.PERFORMANCE_TUNING_SLOT_DELETE_WORKER_COUNT);
    int maxNumberOfPendingSlotsToDelete = AndesConfigurationManager
            .readValue(AndesConfiguration.PERFORMANCE_TUNING_SLOT_DELETE_QUEUE_DEPTH_WARNING_THRESHOLD);
    SlotDeletionExecutor.getInstance().init(slotDeletingWorkerCount, maxNumberOfPendingSlotsToDelete);
}

---

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