Example usage for java.util.concurrent ExecutorService shutdown

Introduction

In this page you can find the example usage for java.util.concurrent ExecutorService shutdown.

Prototype

void shutdown();

Source Link

Document

Initiates an orderly shutdown in which previously submitted tasks are executed, but no new tasks will be accepted.

Usage

From source file:com.microsoft.azure.servicebus.samples.queuesgettingstarted.QueuesGettingStarted.java

public void run(String connectionString) throws Exception {

    // Create a QueueClient instance for receiving using the connection string builder
    // We set the receive mode to "PeekLock", meaning the message is delivered
    // under a lock and must be acknowledged ("completed") to be removed from the queue
    QueueClient receiveClient = new QueueClient(new ConnectionStringBuilder(connectionString, "BasicQueue"),
            ReceiveMode.PEEKLOCK);//from  w ww .j  a v  a2  s. c o m
    // We are using single thread executor as we are only processing one message at a time
    ExecutorService executorService = Executors.newSingleThreadExecutor();
    this.registerReceiver(receiveClient, executorService);

    // Create a QueueClient instance for sending and then asynchronously send messages.
    // Close the sender once the send operation is complete.
    QueueClient sendClient = new QueueClient(new ConnectionStringBuilder(connectionString, "BasicQueue"),
            ReceiveMode.PEEKLOCK);
    this.sendMessagesAsync(sendClient).thenRunAsync(() -> sendClient.closeAsync());

    // wait for ENTER or 10 seconds elapsing
    waitForEnter(10);

    // shut down receiver to close the receive loop
    receiveClient.close();
    executorService.shutdown();
}

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From source file:werecloud.api.bean.VMWareMacCache.java

private void initializeMACCache() throws RemoteException, InterruptedException {
    long start = System.currentTimeMillis();
    ManagedEntity[] mes = new InventoryNavigator(rootFolder).searchManagedEntities("VirtualMachine");
    ExecutorService exec = Executors.newFixedThreadPool(loadThreads);
    try {//from  w  ww.  j  a  v a2 s.  c  om
        for (final ManagedEntity me : mes) {
            exec.submit(new Runnable() {
                @Override
                public void run() {
                    VirtualMachine vm = (VirtualMachine) me;
                    addVirtualMachine(vm);
                }
            });
        }
    } finally {
        exec.shutdown();
    }
    exec.awaitTermination(1, TimeUnit.HOURS);
    logger.info("{} MAC addresses added and took {} milliseconds.", macAddresses.size(),
            System.currentTimeMillis() - start);
}

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From source file:com.microsoft.aad.adal4jsample.BasicFilter.java

private AuthenticationResult getAccessTokenFromRefreshToken(String refreshToken) throws Throwable {
    AuthenticationContext context;//from  w w w .  ja  va 2s.co  m
    AuthenticationResult result = null;
    ExecutorService service = null;
    try {
        service = Executors.newFixedThreadPool(1);
        context = new AuthenticationContext(authority + tenant + "/", true, service);
        Future<AuthenticationResult> future = context.acquireTokenByRefreshToken(refreshToken,
                new ClientCredential(clientId, clientSecret), null, null);
        result = future.get();
    } catch (ExecutionException e) {
        throw e.getCause();
    } finally {
        service.shutdown();
    }

    if (result == null) {
        throw new ServiceUnavailableException("authentication result was null");
    }
    return result;
}

---

From source file:gridool.util.xfer.TransferServer.java

public void run() {
    final ExecutorService execPool = this.execPool;
    final TransferRequestListener handler = this.handler;
    try {/*  w  w  w.  j a  va  2  s.  co  m*/
        while (true) {
            SocketChannel channel = serverChannel.accept();
            execPool.execute(new RequestHandler(channel, handler));
        }
    } catch (ClosedByInterruptException interrupted) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Avoidable interrupt happened (Normal case): " + interrupted.getMessage());
        }
    } catch (IOException ioe) {
        LOG.error(ioe);
    } catch (Throwable th) {
        LOG.error(th);
    } finally {
        execPool.shutdown();
        try {
            serverChannel.close();
        } catch (IOException ie) {
            if (LOG.isDebugEnabled()) {
                LOG.debug(PrintUtils.prettyPrintStackTrace(ie, -1));
            }
        }
    }
}

---

From source file:biz.fstechnology.micro.server.jms.AbstractJmsService.java

/**
 * @see javax.jms.MessageListener#onMessage(javax.jms.Message)
 *///ww  w .  j  a v a 2  s . c o m
@Override
public void onMessage(Message message) {
    try {
        ExecutorService executor = Executors.newSingleThreadExecutor();

        if (((ObjectMessage) message).getObject() instanceof Result) {
            // no op
            return;
        }
        Request<?> request = (Request<?>) ((ObjectMessage) message).getObject(); // cast hell...
        Future<Request<?>> preProcessFuture = executor.submit(() -> onPreProcessRequest(request));

        Future<Result<?>> resultFuture = executor.submit(() -> processRequest(preProcessFuture.get()));

        Future<Result<?>> postProcessFuture = executor
                .submit(() -> onPostProcessRequest(request, resultFuture.get()));
        executor.shutdown();

        Result<?> result = postProcessFuture.get();

        ResponseMessageCreator messageCreator = new ResponseMessageCreator();
        messageCreator.setContents(result);
        messageCreator.setRequestId(message.getJMSCorrelationID());

        replyProducer.send(message.getJMSReplyTo(), messageCreator.createMessage(session));

    } catch (JMSException | InterruptedException | ExecutionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        Result<Object> result = new Result<>(e);
        try {
            ResponseMessageCreator messageCreator = new ResponseMessageCreator();
            messageCreator.setContents(result);
            messageCreator.setRequestId(message.getJMSCorrelationID());

            replyProducer.send(message.getJMSReplyTo(), messageCreator.createMessage(session));
        } catch (JmsException | JMSException e1) {
            e1.printStackTrace();
        }
    }
}

---

From source file:com.netflix.curator.framework.recipes.leader.TestLeaderLatch.java

private void basic(Mode mode) throws Exception {
    final int PARTICIPANT_QTY = 1;//0;

    List<LeaderLatch> latches = Lists.newArrayList();

    Timing timing = new Timing();
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(),
            timing.connection(), new RetryOneTime(1));
    try {//from w w w .  j a v  a 2  s  . c  om
        client.start();

        for (int i = 0; i < PARTICIPANT_QTY; ++i) {
            LeaderLatch latch = new LeaderLatch(client, PATH_NAME);
            if (mode == Mode.START_IMMEDIATELY) {
                latch.start();
            }
            latches.add(latch);
        }
        if (mode == Mode.START_IN_THREADS) {
            ExecutorService service = Executors.newFixedThreadPool(latches.size());
            for (final LeaderLatch latch : latches) {
                service.submit(new Callable<Object>() {
                    @Override
                    public Object call() throws Exception {
                        Thread.sleep((int) (100 * Math.random()));
                        latch.start();
                        return null;
                    }
                });
            }
            service.shutdown();
        }

        while (latches.size() > 0) {
            List<LeaderLatch> leaders = waitForALeader(latches, timing);
            Assert.assertEquals(leaders.size(), 1); // there can only be one leader
            LeaderLatch theLeader = leaders.get(0);
            if (mode == Mode.START_IMMEDIATELY) {
                Assert.assertEquals(latches.indexOf(theLeader), 0); // assert ordering - leadership should advance in start order
            }
            theLeader.close();
            latches.remove(theLeader);
        }
    } finally {
        for (LeaderLatch latch : latches) {
            IOUtils.closeQuietly(latch);
        }
        IOUtils.closeQuietly(client);
    }
}

---

From source file:com.laudandjolynn.mytv.crawler.CrawlerGroup.java

@Override
public List<TvStation> crawlAllTvStation() {
    List<TvStation> resultList = new ArrayList<TvStation>();
    int size = crawlers.size();
    int maxThreadNum = Constant.CPU_PROCESSOR_NUM;
    ThreadFactory threadFactory = new BasicThreadFactory.Builder().namingPattern("Mytv_CrawlerGroup_%d")
            .build();/*w w  w.jav a2 s  . co  m*/
    ExecutorService executorService = Executors.newFixedThreadPool(size > maxThreadNum ? maxThreadNum : size,
            threadFactory);
    CompletionService<List<TvStation>> completionService = new ExecutorCompletionService<List<TvStation>>(
            executorService);
    for (final Crawler crawler : crawlers) {
        Callable<List<TvStation>> task = new Callable<List<TvStation>>() {
            @Override
            public List<TvStation> call() throws Exception {
                return crawler.crawlAllTvStation();
            }
        };
        completionService.submit(task);
    }
    executorService.shutdown();
    int count = 0;
    while (count < size) {
        try {
            List<TvStation> stationList = completionService.take().get();
            if (stationList != null) {
                resultList.addAll(stationList);
            }
        } catch (InterruptedException e) {
            logger.error("crawl task of all tv station interrupted.", e);
        } catch (ExecutionException e) {
            logger.error("crawl task of all tv station executed fail.", e);
        }
        count++;
    }

    for (CrawlEventListener listener : listeners) {
        listener.crawlEnd(new AllTvStationCrawlEndEvent(this, resultList));
    }
    return resultList;
}

---

From source file:models.Search.java

/**
 * @param request The clients request/*w w  w  .j  a v  a2 s . co m*/
 * @param serialization The wanted serialization of the returned data.
 * @return the chunks of the elasticsearch scroll scan query
 */
public Chunks<String> executeScrollScan(final Request request, final Serialization serialization) {
    validateSearchParameters();
    return new StringChunks() {
        @Override
        public void onReady(Chunks.Out<String> out) {
            setMessageOut(out);
            ExecutorService executorService = Executors.newSingleThreadExecutor();
            executorService.execute(new Runnable() {
                @Override
                public void run() {
                    doingScrollScanNow = true;
                    bulk(request, serialization);
                }
            });
            executorService.shutdown();
        }
    };
}

---

From source file:com.mobilecashout.osprey.remote.RemoteClient.java

private synchronized void executeInParallel(RemoteRunnable runnable, DeploymentContext context,
        String[] roles) {//from   w w w. ja v  a 2s. c om
    if (null == roles) {
        roles = new String[] { "all" };
    }
    while (!semaphore.tryAcquire()) {
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            context.setFailed();
            throw new RuntimeException(e);
        }
    }

    final ExecutorService pool = Executors.newFixedThreadPool(sessions.size());
    final ArrayList<Future<Boolean>> futures = new ArrayList<>();

    for (RemoteTarget remoteTarget : sessions) {
        if (!remoteTarget.getTarget().hasAnyRole(roles)) {
            continue;
        }
        Future<Boolean> executor = pool.submit(() -> {
            runnable.run(remoteTarget, context);
            return true;
        });
        futures.add(executor);
    }

    pool.shutdown();

    try {
        pool.awaitTermination(Integer.MAX_VALUE, TimeUnit.MINUTES);
        for (Future future : futures) {
            future.get();
        }
        Thread.sleep(100);
    } catch (InterruptedException | ExecutionException e) {
        context.setFailed();
        logger.fatal(e.getMessage(), e);
    } finally {
        semaphore.release();
    }
}

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From source file:com.pliu.powerbiintegrate.BasicFilter.java

private AuthenticationResult getAccessToken(AuthorizationCode authorizationCode, String currentUri)
        throws Throwable {
    String authCode = authorizationCode.getValue();
    ClientCredential credential = new ClientCredential(clientId, clientSecret);
    AuthenticationContext context;/*from  w  ww .  j a v  a  2s .c o m*/
    AuthenticationResult result = null;
    ExecutorService service = null;
    try {
        service = Executors.newFixedThreadPool(1);
        context = new AuthenticationContext(authority + tenant + "/", true, service);
        Future<AuthenticationResult> future = context.acquireTokenByAuthorizationCode(authCode,
                new URI(currentUri), credential, "https://analysis.windows.net/powerbi/api", null);
        result = future.get();
    } catch (ExecutionException e) {
        throw e.getCause();
    } finally {
        service.shutdown();
    }

    if (result == null) {
        throw new ServiceUnavailableException("authentication result was null");
    }
    return result;
}

---

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