Example usage for java.util.concurrent FutureTask FutureTask

Introduction

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

Prototype

public FutureTask(Callable<V> callable) 

Source Link

Document

Creates a FutureTask that will, upon running, execute the given Callable .

Usage

From source file:com.taobao.tair.comm.TairClientFactory.java

public TairClient get(final String targetUrl, final int connectionTimeout, final PacketStreamer pstreamer)
        throws TairClientException {
    String key = targetUrl;//from  w ww .j a  va  2 s .com
    FutureTask<TairClient> existTask = null;
    existTask = clients.get(key);

    if (existTask == null) {
        FutureTask<TairClient> task = new FutureTask<TairClient>(new Callable<TairClient>() {
            public TairClient call() throws Exception {
                return createClient(targetUrl, connectionTimeout, pstreamer);
            }
        });
        existTask = clients.putIfAbsent(key, task);
        if (existTask == null) {
            existTask = task;
            task.run();
        }
    }

    try {
        return existTask.get();
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    } catch (CancellationException e) {
        // cancel exception may be lost connection fd, but we never called task.cancel();
        clients.remove(key);
        throw e;
    } catch (ExecutionException e) {
        // create socket failed, so need not close
        clients.remove(key);
        throw new TairClientException("create socket exception, target address is " + targetUrl, e);
    }
}

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From source file:test.be.fedict.eid.applet.model.AuthenticationSignatureServiceBean.java

public PreSignResult preSign(List<X509Certificate> authnCertificateChain,
        AuthenticationSignatureContext authenticationSignatureContext) {
    LOG.debug("preSign");
    LOG.debug("authn cert chain size: " + authnCertificateChain.size());

    KeyStore proxyKeyStore;/*  w  ww. j ava  2s  .  c o m*/
    final ProxyPrivateKey proxyPrivateKey;
    try {
        proxyKeyStore = KeyStore.getInstance("ProxyBeID");
        proxyKeyStore.load(null);
        proxyPrivateKey = (ProxyPrivateKey) proxyKeyStore.getKey("Signature", null);
    } catch (Exception e) {
        throw new RuntimeException("error loading ProxyBeID keystore");
    }

    FutureTask<String> signTask = new FutureTask<String>(new Callable<String>() {
        public String call() throws Exception {
            final Signature signature = Signature.getInstance("SHA256withRSA");
            signature.initSign(proxyPrivateKey);

            final byte[] toBeSigned = "hello world".getBytes();
            signature.update(toBeSigned);
            final byte[] signatureValue = signature.sign();
            LOG.debug("received signature value");
            return "signature result";
        }

    });
    final ExecutorService executor = Executors.newFixedThreadPool(1);
    executor.execute(signTask);

    authenticationSignatureContext.store("key", proxyPrivateKey);
    authenticationSignatureContext.store("signTask", signTask);

    byte[] digestValue;
    try {
        digestValue = proxyPrivateKey.getDigestInfo().getDigestValue();
    } catch (InterruptedException e) {
        throw new RuntimeException("signature error: " + e.getMessage(), e);
    }
    DigestInfo digestInfo = new DigestInfo(digestValue, "SHA-256", "WS-Security message");
    PreSignResult preSignResult = new PreSignResult(digestInfo, true);
    return preSignResult;
}

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From source file:com.loopj.android.http.sample.AsyncBackgroundThreadSample.java

@Override
public ResponseHandlerInterface getResponseHandler() {

    FutureTask<ResponseHandlerInterface> future = new FutureTask<>(new Callable<ResponseHandlerInterface>() {

        @Override/*from  w ww  . ja v  a  2 s.c  o  m*/
        public ResponseHandlerInterface call() throws Exception {
            Log.d(LOG_TAG, "Creating AsyncHttpResponseHandler on background thread");
            return new AsyncHttpResponseHandler(Looper.getMainLooper()) {

                @Override
                public void onStart() {
                    clearOutputs();
                }

                @Override
                public void onSuccess(int statusCode, Header[] headers, byte[] response) {
                    Log.d(LOG_TAG, String.format("onSuccess executing on main thread : %B",
                            Looper.myLooper() == Looper.getMainLooper()));
                    debugHeaders(LOG_TAG, headers);
                    debugStatusCode(LOG_TAG, statusCode);
                    debugResponse(LOG_TAG, new String(response));
                }

                @Override
                public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
                    Log.d(LOG_TAG, String.format("onFailure executing on main thread : %B",
                            Looper.myLooper() == Looper.getMainLooper()));
                    debugHeaders(LOG_TAG, headers);
                    debugStatusCode(LOG_TAG, statusCode);
                    debugThrowable(LOG_TAG, e);
                    if (errorResponse != null) {
                        debugResponse(LOG_TAG, new String(errorResponse));
                    }
                }

                @Override
                public void onRetry(int retryNo) {
                    Toast.makeText(AsyncBackgroundThreadSample.this,
                            String.format("Request is retried, retry no. %d", retryNo), Toast.LENGTH_SHORT)
                            .show();
                }
            };
        }
    });

    executor.execute(future);

    ResponseHandlerInterface responseHandler = null;
    try {
        responseHandler = future.get();
        Log.d(LOG_TAG, "Background thread for AsyncHttpResponseHandler has finished");
    } catch (Exception e) {
        e.printStackTrace();
    }

    return responseHandler;
}

---

From source file:com.skymobi.monitor.service.TaskService.java

public FutureTask<CommandResult> runScript(final String script, final Project project) {
    FutureTask<CommandResult> _fuFutureTask = new FutureTask(new Callable() {

        @Override//from w ww.j a  va2 s .c  om
        public CommandResult call() throws Exception {

            logger.debug("run mongo script = {}", script);
            CommandResult result = project.fetchMongoTemplate().getDb().doEval(script,
                    new BasicDBObject().append("nolock", true));
            logger.debug("mongo task response {}", result);
            return result;
        }
    });
    executor.submit(_fuFutureTask);
    return _fuFutureTask;
}

---

From source file:eu.stratosphere.pact.runtime.cache.FileCache.java

/**
 * If the file doesn't exists locally, it will copy the file to the temp directory.
 *//* ww  w. j av a 2 s. c o  m*/
public FutureTask<Path> createTmpFile(String name, String filePath, JobID jobID) {

    synchronized (count) {
        Pair<JobID, String> key = new ImmutablePair(jobID, name);
        if (count.containsKey(key)) {
            count.put(key, count.get(key) + 1);
        } else {
            count.put(key, 1);
        }
    }
    CopyProcess cp = new CopyProcess(name, filePath, jobID);
    FutureTask<Path> copyTask = new FutureTask<Path>(cp);
    executorService.submit(copyTask);
    return copyTask;
}

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From source file:com.linuxbox.enkive.message.search.AbstractMessageSearchService.java

@Override
@Async//from  w  w w .  j a v a  2  s  . c om
public Future<SearchResult> searchAsync(final Map<String, String> fields) throws MessageSearchException {
    FutureTask<SearchResult> searchFuture = new FutureTask<SearchResult>(new Callable<SearchResult>() {
        public SearchResult call() {
            SearchResult result = null;
            try {
                result = search(fields);
            } catch (MessageSearchException e) {
                if (LOGGER.isWarnEnabled())
                    LOGGER.warn("Error Searching for message", e);
            }
            return result;
        }
    });
    searchFuture.run();
    return searchFuture;
}

---

From source file:ubic.gemma.loader.util.fetcher.FtpFetcher.java

/**
 * @param outputFileName//from w  ww. j a va2s  .com
 * @param seekFile
 * @return
 */
protected FutureTask<Boolean> defineTask(final String outputFileName, final String seekFile) {
    FutureTask<Boolean> future = new FutureTask<Boolean>(new Callable<Boolean>() {
        @Override
        public Boolean call() throws FileNotFoundException, IOException {
            File existing = new File(outputFileName);
            if (existing.exists() && avoidDownload) {
                log.info("A local file exists, skipping download.");
                ftpClient.disconnect();
                return Boolean.TRUE;
            } else if (existing.exists() && allowUseExisting) {
                log.info("Checking validity of existing local file: " + outputFileName);
            } else {
                log.info("Fetching " + seekFile + " to " + outputFileName);
            }
            boolean status = NetUtils.ftpDownloadFile(ftpClient, seekFile, outputFileName, force);
            ftpClient.disconnect();
            return new Boolean(status);
        }
    });
    return future;
}

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From source file:com.ciphertool.genetics.Population.java

public int breed(Integer maxIndividuals) {
    List<FutureTask<Chromosome>> futureTasks = new ArrayList<FutureTask<Chromosome>>();
    FutureTask<Chromosome> futureTask = null;

    int individualsAdded = 0;
    for (int i = this.individuals.size(); i < maxIndividuals; i++) {
        futureTask = new FutureTask<Chromosome>(new GeneratorTask());
        futureTasks.add(futureTask);/*ww  w . j  a  v  a 2s .  co m*/

        this.taskExecutor.execute(futureTask);
    }

    for (FutureTask<Chromosome> future : futureTasks) {
        try {
            this.individuals.add(future.get());

            individualsAdded++;
        } catch (InterruptedException ie) {
            log.error("Caught InterruptedException while waiting for GeneratorTask ", ie);
        } catch (ExecutionException ee) {
            log.error("Caught ExecutionException while waiting for GeneratorTask ", ee);
        }
    }

    if (log.isDebugEnabled()) {
        log.debug("Added " + individualsAdded + " individuals to the population.");
    }

    return individualsAdded;
}

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From source file:com.ciphertool.sentencebuilder.etl.importers.WordListImporterImpl.java

@Override
public void importWordList() {
    // Reset the count in case this method is called again
    rowCount.set(0);/* ww w .ja v a 2 s  .  c  om*/

    long start = System.currentTimeMillis();

    try {
        List<Word> wordsFromFile = partOfSpeechFileParser.parseFile();

        log.info("Starting word list import...");

        List<FutureTask<Void>> futureTasks = new ArrayList<FutureTask<Void>>();
        FutureTask<Void> futureTask = null;
        List<Word> threadedWordBatch = new ArrayList<Word>();
        for (Word word : wordsFromFile) {
            threadedWordBatch.add(word);

            if (threadedWordBatch.size() >= this.concurrencyBatchSize) {
                List<Word> nextThreadedWordBatch = new ArrayList<Word>();
                int originalSize = threadedWordBatch.size();

                for (int i = 0; i < originalSize; i++) {
                    /*
                     * It's faster to remove from the end of the List
                     * because no elements need to shift
                     */
                    nextThreadedWordBatch.add(threadedWordBatch.remove(threadedWordBatch.size() - 1));
                }

                futureTask = new FutureTask<Void>(new BatchWordImportTask(nextThreadedWordBatch));
                futureTasks.add(futureTask);
                this.taskExecutor.execute(futureTask);
            }
        }

        /*
         * Start one last task if there are any leftover Words from file
         * that did not reach the batch size.
         */
        if (threadedWordBatch.size() > 0) {
            /*
             * It's safe to use the threadedWordBatch now, instead of
             * copying into a temporaryList, because this is the last thread
             * to run.
             */
            futureTask = new FutureTask<Void>(new BatchWordImportTask(threadedWordBatch));
            futureTasks.add(futureTask);
            this.taskExecutor.execute(futureTask);
        }

        for (FutureTask<Void> future : futureTasks) {
            try {
                future.get();
            } catch (InterruptedException ie) {
                log.error("Caught InterruptedException while waiting for BatchWordImportTask ", ie);
            } catch (ExecutionException ee) {
                log.error("Caught ExecutionException while waiting for BatchWordImportTask ", ee);
            }
        }
    } finally {
        log.info("Rows inserted: " + this.rowCount);
        log.info("Time elapsed: " + (System.currentTimeMillis() - start) + "ms");
    }
}

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From source file:com.appleframework.monitor.service.TaskService.java

@SuppressWarnings("rawtypes")
public FutureTask<CommandResult> runScript(final String script, final Project project) {
    FutureTask<CommandResult> _fuFutureTask = new FutureTask<CommandResult>(new Callable() {
        @Override//www  .  ja va2 s.c om
        public CommandResult call() throws Exception {
            logger.debug("run mongo script = {}", script);
            CommandResult result = project.fetchMongoTemplate().getDb().doEval(script,
                    new BasicDBObject().append("nolock", true));
            logger.debug("mongo task response {}", result);
            return result;
        }
    });
    executor.submit(_fuFutureTask);
    return _fuFutureTask;
}

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