Example usage for java.util.concurrent Callable Callable

Introduction

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

Prototype

Callable

Source Link

Usage

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

@Override
public ResponseHandlerInterface getResponseHandler() {

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

        @Override/*  w w w. ja  v  a  2  s  . c  om*/
        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;
}

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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 w w  .j  a  v  a  2  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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From source file:com.enterra.batch.admin.sample.BootstrapTests.java

@Test
public void testServletConfiguration() throws Exception {
    ClassPathXmlApplicationContext parent = new ClassPathXmlApplicationContext(
            "classpath:/org/springframework/batch/admin/web/resources/webapp-config.xml");
    ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
            new String[] { "classpath:/org/springframework/batch/admin/web/resources/servlet-config.xml" },
            parent);//from   w  w w  .  j  a v a2  s . com

    assertTrue(context.containsBean("jobRepository"));
    String[] beanNames = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(context.getBeanFactory(),
            JobController.class);
    assertEquals(1, beanNames.length);

    Job job = context.getBean(JobRegistry.class).getJob("job1");
    final JobExecution jobExecution = parent.getBean(JobLauncher.class).run(job,
            new JobParametersBuilder().addString("fail", "false").toJobParameters());

    new DirectPoller<BatchStatus>(100).poll(new Callable<BatchStatus>() {
        public BatchStatus call() throws Exception {
            BatchStatus status = jobExecution.getStatus();
            if (status.isLessThan(BatchStatus.STOPPED) && status != BatchStatus.COMPLETED) {
                return null;
            }
            return status;
        }
    }).get(2000, TimeUnit.MILLISECONDS);

    context.close();
    parent.close();

    assertEquals(BatchStatus.COMPLETED, jobExecution.getStatus());

}

---

From source file:com.blacklocus.qs.QueueReader.java

@Override
public void go() throws Exception {
    for (Collection<Q> queueItems : queueItemProvider) {
        try {/*from ww w  .j a  v  a 2  s  .  c o  m*/
            if (queueItems.size() > 0) {
                for (final Q queueItem : queueItems) {
                    handler.withFuture(queueItem, executor.submit(new Callable<Pair<Q, R>>() {
                        public Pair<Q, R> call() throws Exception {
                            T converted = null;
                            R result = null;
                            try {
                                converted = handler.convert(queueItem);
                                result = handler.process(converted);
                                handler.onSuccess(queueItem, converted, result);
                                return Pair.of(queueItem, result);
                            } catch (Throwable t) {
                                LOG.error("An error occurred while processing item {}", queueItem, t);
                                handler.onError(queueItem, converted, t);
                                throw new RuntimeException(t);
                            } finally {
                                handler.onComplete(queueItem, converted, result);
                            }
                        }
                    }));
                }
            } else {
                LOG.debug("No items available... sleeping for {} ms", sleepMs);
                Thread.sleep(sleepMs);
            }
        } catch (InterruptedException e) {
            LOG.error("Reader thread interrupted", e);
            Thread.currentThread().interrupt();
        } catch (Throwable t) {
            LOG.error("Runtime error in reader thread", t);
        }
    }
}

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From source file:org.apache.hadoop.gateway.shell.AbstractRequest.java

public Future<T> later(final Closure<Void> closure) {
    return hadoop().executeLater(new Callable<T>() {
        @Override//from  w w  w  .j  a v a2s .c  o  m
        public T call() throws Exception {
            T result = callable().call();
            closure.call(result);
            return result;
        }
    });
}

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

@Override
@Async/*from  w w w.  java 2 s  . c  o m*/
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;
}

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From source file:com.googlecode.starflow.engine.handle.BaseHandlerAdapter.java

/**
 * /*from ww  w  . j  a va  2 s .c  o m*/
 * 
 * suspend
 * ?
 *        join????
 *        suspend??
 * 
 * @param event
 * @param actEl
 * @param activityXml
 * @param action
 * @param activityInst
 */
public void action(final ActivityStartEvent event, final ActivityInst activityInst, ActivityElement activityXml,
        final IAction action) {
    String invokePattern = activityXml.getInvokePattern();
    final String transactionType = activityXml.getTransactionType();

    ExecutorService executor = event.getProcessEngine().getExecutorService();

    if (Constants.ACT_AUTO_CALL_SYN.equalsIgnoreCase(invokePattern)) {
        Object result = null;
        //????????
        try {
            result = executor.execute(new Callable<Object>() {
                @Override
                public Object call() throws Exception {
                    if (Constants.ACT_TRANSACTION_JOIN.equalsIgnoreCase(transactionType)) {
                        return action.execute(event, activityInst);
                    } else {
                        return executeLogicInNewTransaction(event, activityInst, action);
                    }
                }
            }, invokePattern);

        } catch (Exception e) {
            handleException(e, event, activityXml);
        }

        //?
        saveResultRelaData(event, result, activityXml);
    } else {
        //suspend

        try {
            executor.execute(new Callable<Object>() {
                public Object call() throws Exception {
                    return executeLogicInNewTransaction(event, activityInst, action);
                }
            }, invokePattern);
        } catch (Exception e) {
            logger.error("Action", e);
        }
    }
}

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From source file:com.microsoft.azure.management.compute.VirtualMachineSizeOperationsImpl.java

/**
* Lists virtual-machine-sizes available in a location for a subscription.
*
* @param location Required. The location upon which virtual-machine-sizes
* is queried./*from w w  w  .  j  a va  2  s  . c o  m*/
* @return The List Virtual Machine operation response.
*/
@Override
public Future<VirtualMachineSizeListResponse> listAsync(final String location) {
    return this.getClient().getExecutorService().submit(new Callable<VirtualMachineSizeListResponse>() {
        @Override
        public VirtualMachineSizeListResponse call() throws Exception {
            return list(location);
        }
    });
}

---

From source file:com.microsoft.windowsazure.management.mediaservices.MediaServiceManagementIntegrationTestBase.java

protected static void createStorageManagementClient() throws Exception {
    Configuration config = createConfiguration();
    config.setProperty(ApacheConfigurationProperties.PROPERTY_RETRY_HANDLER,
            new DefaultHttpRequestRetryHandler());
    storageManagementClient = StorageManagementService.create(config);
    addClient((ServiceClient<?>) storageManagementClient, new Callable<Void>() {
        @Override//from   w  w  w.  j av  a  2  s .co m
        public Void call() throws Exception {
            createStorageManagementClient();
            return null;
        }
    });
}

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From source file:net.arp7.HdfsPerfTest.WriteFile.java

private static void writeFiles(final Configuration conf, final FileIoStats stats)
        throws InterruptedException, IOException {
    final FileSystem fs = FileSystem.get(conf);
    final AtomicLong filesLeft = new AtomicLong(params.getNumFiles());
    final long runId = abs(rand.nextLong());
    final byte[] data = new byte[params.getIoSize()];
    Arrays.fill(data, (byte) 65);

    // Start the writers.
    final ExecutorService executor = Executors.newFixedThreadPool((int) params.getNumThreads());
    final CompletionService<Object> ecs = new ExecutorCompletionService<>(executor);
    LOG.info("NumFiles=" + params.getNumFiles() + ", FileSize="
            + FileUtils.byteCountToDisplaySize(params.getFileSize()) + ", IoSize="
            + FileUtils.byteCountToDisplaySize(params.getIoSize()) + ", BlockSize="
            + FileUtils.byteCountToDisplaySize(params.getBlockSize()) + ", ReplicationFactor="
            + params.getReplication() + ", isThrottled=" + (params.maxWriteBps() > 0));
    LOG.info("Starting " + params.getNumThreads() + " writer thread" + (params.getNumThreads() > 1 ? "s" : "")
            + ".");
    final long startTime = System.nanoTime();
    for (long t = 0; t < params.getNumThreads(); ++t) {
        final long threadIndex = t;
        Callable<Object> c = new Callable<Object>() {
            @Override//ww w .j a v  a 2  s. com
            public Object call() throws Exception {
                long fileIndex = 0;
                while (filesLeft.addAndGet(-1) >= 0) {
                    final String fileName = "WriteFile-" + runId + "-" + (threadIndex + 1) + "-"
                            + (++fileIndex);
                    writeOneFile(new Path(params.getOutputDir(), fileName), fs, data, stats);
                }
                return null;
            }
        };
        ecs.submit(c);
    }

    // And wait for all writers to complete.
    for (long t = 0; t < params.getNumThreads(); ++t) {
        ecs.take();
    }
    final long endTime = System.nanoTime();
    stats.setElapsedTime(endTime - startTime);
    executor.shutdown();
}

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