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.sipfoundry.sipxconfig.xmlrpc.XmlRpcClientInterceptor.java

/**
 * Temporary workaround for the problem with timeout (or lack thereof) in the XML/RPC library
 * transport./*  www.  java2s  .  c  om*/
 *
 * We call the XML/RPC in the background thread and interrupt it if it takes too long. We
 * attempt to handle exceptions related to the threading issues (And timeout) only. Everything
 * else is handled by the invoke method.
 *
 * @param request XML/RPC request
 * @return result of XML/RPC call
 */
private Object executeWithTimeout(final XmlRpcClientRequest request) throws Throwable {
    Callable execute = new Callable() {
        public Object call() throws IOException {
            try {
                Object result = m_xmlRpcClient.execute(request);
                // strangely execute returns exceptions, instead of throwing them
                if (result instanceof XmlRpcException) {
                    // let catch block translate it
                    throw (XmlRpcException) result;
                }
                return result;
            } catch (XmlRpcException e) {
                LOG.error("XML/RPC error: ", e);
                // in cases execute throws exception - we still need to translate
                throw new XmlRpcRemoteException(e);
            }
        }
    };
    FutureTask task = new FutureTask(execute);
    m_service.execute(task);
    try {
        return task.get(m_timeout, TimeUnit.MILLISECONDS);
    } catch (InterruptedException e) {
        throw new XmlRpcRemoteException(e);
    } catch (TimeoutException e) {
        LOG.error("Timeout in XML/RPC call");
        throw new XmlRpcRemoteException(e);
    } catch (ExecutionException e) {
        // rethrow cause and let us to repackage it below
        throw e.getCause();
    }
}

---

From source file:org.nuxeo.ecm.core.management.jtajca.CanMonitorTransactionsTest.java

@Test
public void isActiveStatisticsCollected() throws InterruptedException, ExecutionException {
    FutureTask<Boolean> task = new FutureTask<Boolean>(new TestCollectStatistics());
    executor.execute(task);/* ww  w.ja  va  2  s  .com*/
    assertThat(task.get(), is(true));
}

---

From source file:org.apache.kylin.storage.hbase.util.StorageCleanupJob.java

private void cleanUnusedHBaseTables(Configuration conf) throws IOException {
    CubeManager cubeMgr = CubeManager.getInstance(KylinConfig.getInstanceFromEnv());
    // get all kylin hbase tables
    Connection conn = HBaseConnection.get(KylinConfig.getInstanceFromEnv().getStorageUrl());
    Admin hbaseAdmin = conn.getAdmin();//from   w  w w.jav a2 s .co  m
    String tableNamePrefix = IRealizationConstants.SharedHbaseStorageLocationPrefix;
    HTableDescriptor[] tableDescriptors = hbaseAdmin.listTables(tableNamePrefix + ".*");
    List<String> allTablesNeedToBeDropped = new ArrayList<String>();
    for (HTableDescriptor desc : tableDescriptors) {
        String host = desc.getValue(IRealizationConstants.HTableTag);
        if (KylinConfig.getInstanceFromEnv().getMetadataUrlPrefix().equalsIgnoreCase(host)) {
            //only take care htables that belongs to self, and created more than 2 days
            allTablesNeedToBeDropped.add(desc.getTableName().getNameAsString());
        }
    }

    // remove every segment htable from drop list
    for (CubeInstance cube : cubeMgr.listAllCubes()) {
        for (CubeSegment seg : cube.getSegments()) {
            String tablename = seg.getStorageLocationIdentifier();
            if (allTablesNeedToBeDropped.contains(tablename)) {
                allTablesNeedToBeDropped.remove(tablename);
                logger.info("Exclude table " + tablename + " from drop list, as the table belongs to cube "
                        + cube.getName() + " with status " + cube.getStatus());
            }
        }
    }

    if (delete == true) {
        // drop tables
        ExecutorService executorService = Executors.newSingleThreadExecutor();
        for (String htableName : allTablesNeedToBeDropped) {
            FutureTask futureTask = new FutureTask(new DeleteHTableRunnable(hbaseAdmin, htableName));
            executorService.execute(futureTask);
            try {
                futureTask.get(deleteTimeout, TimeUnit.MINUTES);
            } catch (TimeoutException e) {
                logger.warn("It fails to delete htable " + htableName + ", for it cost more than "
                        + deleteTimeout + " minutes!");
                futureTask.cancel(true);
            } catch (Exception e) {
                e.printStackTrace();
                futureTask.cancel(true);
            }
        }
        executorService.shutdown();
    } else {
        System.out.println("--------------- Tables To Be Dropped ---------------");
        for (String htableName : allTablesNeedToBeDropped) {
            System.out.println(htableName);
        }
        System.out.println("----------------------------------------------------");
    }

    hbaseAdmin.close();
}

---

From source file:cc.gospy.core.util.StringHelper.java

public static String getMyExternalIp() {
    if (myExternalIp == null) {
        try {//  w ww. ja v  a2 s.  c  o  m
            logger.info("Querying external ip...");
            FutureTask futureTask = new FutureTask<>(() -> {
                URL ipEcho = new URL("http://ipecho.net/plain");
                BufferedReader in = new BufferedReader(new InputStreamReader(ipEcho.openStream()));
                String resultIp = in.readLine();
                in.close();
                return resultIp;
            });
            futureTask.run();
            myExternalIp = (String) futureTask.get(3, TimeUnit.SECONDS);
            logger.info("My external ip: {}", myExternalIp);
        } catch (TimeoutException e) {
            myExternalIp = "unknown ip";
            logger.error("Get external ip failure, cause: Timeout (3 seconds)");
        } catch (Exception e) {
            myExternalIp = "unknown ip";
            logger.error("Get external ip failure, cause: {}", e.getMessage());
        }
    }
    return myExternalIp;
}

---

From source file:org.apache.kylin.tool.StorageCleanupJob.java

private void cleanUnusedHBaseTables(Configuration conf) throws IOException {
    CubeManager cubeMgr = CubeManager.getInstance(KylinConfig.getInstanceFromEnv());
    // get all kylin hbase tables
    try (HBaseAdmin hbaseAdmin = new HBaseAdmin(conf)) {
        String tableNamePrefix = IRealizationConstants.SharedHbaseStorageLocationPrefix;
        HTableDescriptor[] tableDescriptors = hbaseAdmin.listTables(tableNamePrefix + ".*");
        List<String> allTablesNeedToBeDropped = new ArrayList<String>();
        for (HTableDescriptor desc : tableDescriptors) {
            String host = desc.getValue(IRealizationConstants.HTableTag);
            if (KylinConfig.getInstanceFromEnv().getMetadataUrlPrefix().equalsIgnoreCase(host)) {
                //only take care htables that belongs to self, and created more than 2 days
                allTablesNeedToBeDropped.add(desc.getTableName().getNameAsString());
            }//from  w  ww  .ja v  a2  s.co m
        }

        // remove every segment htable from drop list
        for (CubeInstance cube : cubeMgr.listAllCubes()) {
            for (CubeSegment seg : cube.getSegments()) {
                String tablename = seg.getStorageLocationIdentifier();
                if (allTablesNeedToBeDropped.contains(tablename)) {
                    allTablesNeedToBeDropped.remove(tablename);
                    logger.info("Exclude table " + tablename + " from drop list, as the table belongs to cube "
                            + cube.getName() + " with status " + cube.getStatus());
                }
            }
        }

        if (delete == true) {
            // drop tables
            ExecutorService executorService = Executors.newSingleThreadExecutor();
            for (String htableName : allTablesNeedToBeDropped) {
                FutureTask futureTask = new FutureTask(new DeleteHTableRunnable(hbaseAdmin, htableName));
                executorService.execute(futureTask);
                try {
                    futureTask.get(deleteTimeout, TimeUnit.MINUTES);
                } catch (TimeoutException e) {
                    logger.warn("It fails to delete htable " + htableName + ", for it cost more than "
                            + deleteTimeout + " minutes!");
                    futureTask.cancel(true);
                } catch (Exception e) {
                    e.printStackTrace();
                    futureTask.cancel(true);
                }
            }
            executorService.shutdown();
        } else {
            System.out.println("--------------- Tables To Be Dropped ---------------");
            for (String htableName : allTablesNeedToBeDropped) {
                System.out.println(htableName);
            }
            System.out.println("----------------------------------------------------");
        }
    }
}

---

From source file:org.apache.jackrabbit.oak.jcr.CompatibilityIssuesTest.java

private static void run(Callable<Void> callable) throws InterruptedException, ExecutionException {
    FutureTask<Void> task = new FutureTask<Void>(callable);
    new Thread(task).start();
    task.get();//from   w  w  w  . j  a  v a  2 s. co  m
}

---

From source file:cognition.common.service.DocumentConversionService.java

private File makeTiffFromPDF(DNCWorkCoordinate coordinate, File input) throws IOException, TikaException {
    File output = File.createTempFile(coordinate.getFileName(), ".tiff");
    String[] cmd = { getImageMagickProg(), "-density", "300", input.getPath(), "-depth", "8", "-quality", "1",
            output.getPath() };// w  w  w  .  jav  a  2 s. com
    Process process = new ProcessBuilder(cmd).start();
    IOUtils.closeQuietly(process.getOutputStream());
    InputStream processInputStream = process.getInputStream();
    logStream(processInputStream);
    FutureTask<Integer> waitTask = new FutureTask<>(process::waitFor);
    Thread waitThread = new Thread(waitTask);
    waitThread.start();
    try {
        waitTask.get(240, TimeUnit.SECONDS);
        return output;
    } catch (Exception e) {
        logger.error(e.getMessage());
        waitThread.interrupt();
        process.destroy();
        waitTask.cancel(true);
    } finally {
        IOUtils.closeQuietly(processInputStream);
        process.destroy();
        waitThread.interrupt();
        waitTask.cancel(true);
    }
    return null;
}

---

From source file:org.apache.axis2.jaxws.client.async.CallbackFuture.java

@SuppressWarnings("unchecked")
public CallbackFuture(InvocationContext ic, AsyncHandler handler) {

    // We need to save off the classloader associated with the AsyncHandler instance
    // since we'll need to set this same classloader on the thread where
    // handleResponse() is invoked.
    // This is required so that we don't encounter ClassCastExceptions.
    final Object handlerObj = handler;
    final ClassLoader handlerCL = (ClassLoader) AccessController.doPrivileged(new PrivilegedAction() {
        public Object run() {
            return handlerObj.getClass().getClassLoader();
        }//from   w ww. j  a  v a 2  s .  co m
    });

    // Allow the AsyncHandlerProxyFactory to create the proxy for the AsyncHandler
    // passed in (which was provided by the client on the async invocation).
    // This allows any server-specific work to be done, such as thread context management, etc.
    AsyncHandler originalHandler = handler;
    try {
        if (debug) {
            log.debug("Calling factory to create proxy for AsyncHandler instance: " + displayHandle(handler));
        }
        AsyncHandlerProxyFactory proxyFactory = (AsyncHandlerProxyFactory) FactoryRegistry
                .getFactory(AsyncHandlerProxyFactory.class);
        handler = proxyFactory.createAsyncHandlerProxy(handler);
        if (debug) {
            log.debug("Factory returned AsyncHandler proxy instance: " + displayHandle(handler));
        }
    } catch (Exception e) {
        if (debug) {
            log.debug("AsyncHandlerProxyFactory threw an exception: " + e.toString());
            e.printStackTrace();
        }

        // Just use the original handler provided by the client if we 
        // failed to create a proxy for it.
        handler = originalHandler;
    }

    cft = new CallbackFutureTask(ic.getAsyncResponseListener(), handler, handlerCL);
    task = new FutureTask(cft);
    executor = ic.getExecutor();

    /*
    * TODO review.  We need to save the invocation context so we can set it on the
    * response (or fault) context so the FutureCallback has access to the handler list.
    */
    invocationCtx = ic;
}

---

From source file:org.apache.ambari.server.KdcServerConnectionVerification.java

/**
 * Attempt to communicate with KDC server over UDP.
 * @param server KDC hostname or IP address
 * @param port   KDC server port//from  w w  w. j a  v a 2 s . c  o m
 * @return  true if communication is successful; false otherwise
 */
public boolean isKdcReachableViaUDP(final String server, final int port) {
    int timeoutMillis = udpTimeout * 1000;
    final KdcConfig config = KdcConfig.getDefaultConfig();
    config.setHostName(server);
    config.setKdcPort(port);
    config.setUseUdp(true);
    config.setTimeout(timeoutMillis);

    final KdcConnection connection = getKdcUdpConnection(config);
    FutureTask<Boolean> future = new FutureTask<Boolean>(new Callable<Boolean>() {
        @Override
        public Boolean call() {
            try {
                // we are only testing whether we can communicate with server and not
                // validating credentials
                connection.getTgt("noUser@noRealm", "noPassword");
            } catch (KerberosException e) {
                // unfortunately, need to look at msg as error 60 is a generic error code
                return !(e.getErrorCode() == ErrorType.KRB_ERR_GENERIC.getValue()
                        && e.getMessage().contains("TimeOut"));
                //todo: evaluate other error codes to provide better information
                //todo: as there may be other error codes where we should return false
            } catch (Exception e) {
                // some bad unexpected thing occurred
                throw new RuntimeException(e);
            }
            return true;
        }
    });

    new Thread(future, "ambari-kdc-verify").start();
    Boolean result;
    try {
        // timeout after specified timeout
        result = future.get(timeoutMillis, TimeUnit.MILLISECONDS);
    } catch (InterruptedException e) {
        LOG.error("Interrupted while trying to communicate with KDC server over UDP");
        result = false;
        future.cancel(true);
    } catch (ExecutionException e) {
        LOG.error(
                "An unexpected exception occurred while attempting to communicate with the KDC server over UDP",
                e);
        result = false;
    } catch (TimeoutException e) {
        LOG.error("Timeout occurred while attempting to to communicate with KDC server over UDP");
        result = false;
        future.cancel(true);
    }

    return result;
}

---

• «
• 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
• »