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:org.springframework.batch.core.scope.AsyncStepScopeIntegrationTests.java

@Test
public void testGetMultipleInMultipleThreads() throws Exception {

    List<FutureTask<String>> tasks = new ArrayList<FutureTask<String>>();

    for (int i = 0; i < 12; i++) {
        final String value = "foo" + i;
        final Long id = 123L + i;
        FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
            @Override/*from   www.  j  a v  a  2  s  . c o  m*/
            public String call() throws Exception {
                StepExecution stepExecution = new StepExecution(value, new JobExecution(0L), id);
                ExecutionContext executionContext = stepExecution.getExecutionContext();
                executionContext.put("foo", value);
                StepContext context = StepSynchronizationManager.register(stepExecution);
                logger.debug("Registered: " + context.getStepExecutionContext());
                try {
                    return simple.getName();
                } finally {
                    StepSynchronizationManager.close();
                }
            }
        });
        tasks.add(task);
        taskExecutor.execute(task);
    }

    int i = 0;
    for (FutureTask<String> task : tasks) {
        assertEquals("foo" + i, task.get());
        i++;
    }

}

---

From source file:org.eclipse.virgo.ide.runtime.internal.core.command.AbstractJmxServerCommand.java

protected final Object execute(final JmxServerCommandTemplate template) throws TimeoutException {

    Callable<Object> deployOperation = new Callable<Object>() {

        public Object call() throws Exception {
            JMXConnector connector = null;
            try {
                connector = getJmxConnector();
                return template.invokeOperation(connector.getMBeanServerConnection());
            } finally {
                if (connector != null) {
                    try {
                        connector.close();
                    } catch (IOException e) {
                        SpringCore.log(e);
                    }//from w  ww  .  jav a2s.co  m
                }
            }
        }
    };

    FutureTask<Object> task = new FutureTask<Object>(deployOperation);
    ServerCorePlugin.EXECUTOR.submit(task);

    try {
        return task.get(30, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
        // swallow exception here
    } catch (ExecutionException e) {
        // swallow exception here
    }

    return null;
}

---

From source file:com.appleframework.monitor.action.LogsAction.java

@RequestMapping(value = "/projects/{projectName}/logs/more", method = RequestMethod.GET)
public void console(final HttpServletResponse response, ModelMap map, @PathVariable String projectName,
        LogQuery logQuery) throws IOException, ParseException {
    Project project = projectService.findProject(projectName);
    map.put("project", project);
    final MongoConverter converter = project.fetchMongoTemplate().getConverter();
    final DBCursor cursor = logsService.findLogs(projectName, logQuery);
    final StringBuffer buf = new StringBuffer();

    FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
        @Override//  w w w. ja  v  a2  s  .  c  o m
        public String call() throws Exception {
            long startTime = System.currentTimeMillis();
            //???20
            logger.debug("result:");
            while (cursor.hasNext()) {
                Log log = converter.read(Log.class, cursor.next());

                buf.insert(0, log.toString() + "\n");
                long current = System.currentTimeMillis();
                if ((current - startTime) / 1000 >= mongWaitSeconds)
                    break;
            }
            return buf.toString();
        }
    });
    executor.execute(task);
    try {
        task.get(mongWaitSeconds + 5, TimeUnit.SECONDS);
        cursor.close();
    } catch (Exception e) {
        logger.error("time out ", e);
        task.cancel(true);
    }

    response.setContentType("text/html;charset=UTF-8");
    response.getWriter().write(buf.toString());
    response.getWriter().flush();
}

---

From source file:com.skymobi.monitor.action.LogsAction.java

@RequestMapping(value = "/projects/{projectName}/logs/more", method = RequestMethod.GET)
public void console(final HttpServletResponse response, ModelMap map, @PathVariable String projectName,
        LogQuery logQuery) throws IOException, ParseException {
    Project project = projectService.findProject(projectName);
    map.put("project", project);
    final MongoConverter converter = project.fetchMongoTemplate().getConverter();
    final DBCursor cursor = logsService.findLogs(projectName, logQuery);
    final StringBuffer buf = new StringBuffer();
    @SuppressWarnings("unchecked")
    FutureTask<String> task = new FutureTask(new Callable<String>() {
        @Override//from   w w  w  .ja  v  a  2s. co  m
        public String call() throws Exception {
            long startTime = System.currentTimeMillis();
            //???20
            logger.debug("result:");
            while (cursor.hasNext()) {
                Log log = converter.read(Log.class, cursor.next());

                buf.insert(0, log.toString() + "\n");
                long current = System.currentTimeMillis();
                if ((current - startTime) / 1000 >= mongWaitSeconds)
                    break;
            }
            return buf.toString();
        }
    });
    executor.execute(task);
    try {
        task.get(mongWaitSeconds + 5, TimeUnit.SECONDS);
        cursor.close();
    } catch (Exception e) {
        logger.error("time out ", e);
        task.cancel(true);
    }

    response.setContentType("text/html;charset=UTF-8");
    response.getWriter().write(buf.toString());
    response.getWriter().flush();

}

---

From source file:com.liferay.portal.search.internal.SearchEngineInitializer.java

protected void doReIndex(int delay) {
    if (IndexWriterHelperUtil.isIndexReadOnly()) {
        return;/*from  w w w.j av a2  s  .  co  m*/
    }

    if (_log.isInfoEnabled()) {
        _log.info("Reindexing Lucene started");
    }

    if (delay < 0) {
        delay = 0;
    }

    try {
        if (delay > 0) {
            Thread.sleep(Time.SECOND * delay);
        }
    } catch (InterruptedException ie) {
    }

    ExecutorService executorService = _portalExecutorManager
            .getPortalExecutor(SearchEngineInitializer.class.getName());

    StopWatch stopWatch = new StopWatch();

    stopWatch.start();

    try {
        SearchEngineHelperUtil.removeCompany(_companyId);

        SearchEngineHelperUtil.initialize(_companyId);

        long backgroundTaskId = BackgroundTaskThreadLocal.getBackgroundTaskId();
        List<FutureTask<Void>> futureTasks = new ArrayList<>();
        Set<String> searchEngineIds = new HashSet<>();

        for (Indexer<?> indexer : IndexerRegistryUtil.getIndexers()) {
            String searchEngineId = indexer.getSearchEngineId();

            if (searchEngineIds.add(searchEngineId)) {
                IndexWriterHelperUtil.deleteEntityDocuments(searchEngineId, _companyId, indexer.getClassName(),
                        true);
            }

            FutureTask<Void> futureTask = new FutureTask<>(new Callable<Void>() {

                @Override
                public Void call() throws Exception {
                    BackgroundTaskThreadLocal.setBackgroundTaskId(backgroundTaskId);

                    reindex(indexer);

                    return null;
                }

            });

            executorService.submit(futureTask);

            futureTasks.add(futureTask);
        }

        for (FutureTask<Void> futureTask : futureTasks) {
            futureTask.get();
        }

        if (_log.isInfoEnabled()) {
            _log.info("Reindexing Lucene completed in " + (stopWatch.getTime() / Time.SECOND) + " seconds");
        }
    } catch (Exception e) {
        _log.error("Error encountered while reindexing", e);

        if (_log.isInfoEnabled()) {
            _log.info("Reindexing Lucene failed");
        }
    }

    _finished = true;
}

---

From source file:org.springframework.batch.core.step.tasklet.SystemCommandTasklet.java

/**
 * Execute system command and map its exit code to {@link ExitStatus} using
 * {@link SystemProcessExitCodeMapper}.//from   w w  w  .  j  a v a 2 s. c  o m
 */
@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {

    FutureTask<Integer> systemCommandTask = new FutureTask<Integer>(new Callable<Integer>() {

        @Override
        public Integer call() throws Exception {
            Process process = Runtime.getRuntime().exec(command, environmentParams, workingDirectory);
            return process.waitFor();
        }

    });

    long t0 = System.currentTimeMillis();

    taskExecutor.execute(systemCommandTask);

    while (true) {
        Thread.sleep(checkInterval);//moved to the end of the logic

        if (stoppable) {
            JobExecution jobExecution = jobExplorer
                    .getJobExecution(chunkContext.getStepContext().getStepExecution().getJobExecutionId());

            if (jobExecution.isStopping()) {
                stopped = true;
            }
        }

        if (systemCommandTask.isDone()) {
            contribution.setExitStatus(systemProcessExitCodeMapper.getExitStatus(systemCommandTask.get()));
            return RepeatStatus.FINISHED;
        } else if (System.currentTimeMillis() - t0 > timeout) {
            systemCommandTask.cancel(interruptOnCancel);
            throw new SystemCommandException("Execution of system command did not finish within the timeout");
        } else if (execution.isTerminateOnly()) {
            systemCommandTask.cancel(interruptOnCancel);
            throw new JobInterruptedException(
                    "Job interrupted while executing system command '" + command + "'");
        } else if (stopped) {
            systemCommandTask.cancel(interruptOnCancel);
            contribution.setExitStatus(ExitStatus.STOPPED);
            return RepeatStatus.FINISHED;
        }
    }
}

---

From source file:com.alibaba.dragoon.common.protocol.DragoonSession.java

public Future<ResponseMessage> sendMessage(RequestMessage message) {
    int frameId = nextSequence();
    message.setFrameId(frameId);/*from   w  w w  . j a va  2  s.c o  m*/

    ResponseMessageTask task = new ResponseMessageTask();
    taskMap.put(frameId, task);

    FutureTask<ResponseMessage> future = new FutureTask<ResponseMessage>(task);
    futureMap.put(frameId, future);

    try {
        sentMessageCount.incrementAndGet();
        impl.sendMessageDirect(message);
    } catch (IOException e) {
        task.setError(e);
        future.run();
    }

    return future;
}

---

From source file:pt.webdetails.cpf.messaging.EventPublisher.java

private FutureTask<Result> getPublishTask(final PluginEvent event) {
    return new FutureTask<Result>(new Callable<Result>() {

        @Override/*from w  w  w . j a v a 2  s.  c om*/
        public Result call() throws Exception {
            JsonPluginCall call = new JsonPluginCall(InterPluginCall.CDV, "warnings");
            return new Result(call.call(event.toJSON()));
        }

    });
}

---

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

/**
 * @param outputFileName/*from w w  w .  jav  a  2s. c  o  m*/
 * @param seekFile
 * @return
 */
protected FutureTask<Boolean> defineTask(final String outputFileName, final String seekFile) {
    FutureTask<Boolean> future = new FutureTask<Boolean>(new Callable<Boolean>() {
        @Override
        @SuppressWarnings("synthetic-access")
        public Boolean call() throws FileNotFoundException, IOException {
            log.info("Fetching " + seekFile);
            URL urlPattern = new URL(seekFile);

            InputStream inputStream = new BufferedInputStream(urlPattern.openStream());
            OutputStream outputStream = new FileOutputStream(new File(outputFileName));

            final byte[] buffer = new byte[65536];
            int read = -1;

            while ((read = inputStream.read(buffer)) > -1) {
                outputStream.write(buffer, 0, read);
            }
            outputStream.close();
            return Boolean.TRUE;
        }
    });
    return future;
}

---

From source file:com.mrfeinberg.translation.AbstractTranslationService.java

public Runnable translate(final String phrase, final LanguagePair lp, final TranslationListener listener) {
    final Language b = lp.b();

    final HttpClient httpClient = new HttpClient();
    if (proxyPrefs.getUseProxy()) {
        httpClient.getHostConfiguration().setProxy(proxyPrefs.getProxyHost(), proxyPrefs.getProxyPort());
    }/* w  ww .jav  a2  s.co m*/

    final HttpMethod httpMethod = getHttpMethod(phrase, lp);
    final Callable<String> callable = new Callable<String>() {
        public String call() throws Exception {
            int result = httpClient.executeMethod(httpMethod);
            if (result != 200) {
                throw new Exception("Got " + result + " status for " + httpMethod.getURI());
            }
            final BufferedReader in = new BufferedReader(
                    new InputStreamReader(httpMethod.getResponseBodyAsStream(), "utf8"));
            try {
                final StringBuilder sb = new StringBuilder();
                String line;
                while ((line = in.readLine()) != null)
                    sb.append(line);
                return sb.toString();
            } finally {
                in.close();
                httpMethod.releaseConnection();
            }
        }
    };
    final FutureTask<String> tc = new FutureTask<String>(callable);
    return new Runnable() {
        public void run() {
            try {
                executor.execute(tc);
                final String result = tc.get(timeout, TimeUnit.MILLISECONDS);
                String found = findTranslatedText(result);
                if (found == null) {
                    listener.error("Cannot find translated text in result.");
                } else {
                    found = found.replaceAll("\\s+", " ");
                    listener.result(found, b);
                }
            } catch (final TimeoutException e) {
                listener.timedOut();
            } catch (final InterruptedException e) {
                listener.cancelled();
            } catch (final Exception e) {
                e.printStackTrace();
                listener.error(e.toString());
            }
        }
    };
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• »