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:org.apache.brooklyn.util.http.HttpTool.java

/**
 * Connects to the given url and returns the connection.
 * Caller should {@code connection.getInputStream().close()} the result of this
 * (especially if they are making heavy use of this method).
 *//* w w w. ja  va 2s  .c o m*/
public static URLConnection connectToUrl(String u) throws Exception {
    final URL url = new URL(u);
    final AtomicReference<Exception> exception = new AtomicReference<Exception>();

    // sometimes openConnection hangs, so run in background
    Future<URLConnection> f = executor.submit(new Callable<URLConnection>() {
        public URLConnection call() {
            try {
                HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
                    @Override
                    public boolean verify(String s, SSLSession sslSession) {
                        return true;
                    }
                });
                URLConnection connection = url.openConnection();
                TrustingSslSocketFactory.configure(connection);
                connection.connect();

                connection.getContentLength(); // Make sure the connection is made.
                return connection;
            } catch (Exception e) {
                exception.set(e);
                LOG.debug("Error connecting to url " + url + " (propagating): " + e, e);
            }
            return null;
        }
    });
    try {
        URLConnection result = null;
        try {
            result = f.get(60, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            throw e;
        } catch (Exception e) {
            LOG.debug("Error connecting to url " + url + ", probably timed out (rethrowing): " + e);
            throw new IllegalStateException(
                    "Connect to URL not complete within 60 seconds, for url " + url + ": " + e);
        }
        if (exception.get() != null) {
            LOG.debug("Error connecting to url " + url + ", thread caller of " + exception,
                    new Throwable("source of rethrown error " + exception));
            throw exception.get();
        } else {
            return result;
        }
    } finally {
        f.cancel(true);
    }
}

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From source file:ddf.catalog.test.SecurityPolicyConfigurator.java

private Callable<Boolean> createChecker(final Map<String, Object> policyProperties) {

    final ContextPolicyManager ctxPolicyMgr = services.getService(ContextPolicyManager.class);

    final PolicyManager targetPolicies = new PolicyManager();
    targetPolicies.setPolicies(policyProperties);

    return new Callable<Boolean>() {
        @Override//w w  w.  ja va2 s.c  o  m
        public Boolean call() throws Exception {
            for (ContextPolicy policy : ctxPolicyMgr.getAllContextPolicies()) {
                ContextPolicy targetPolicy = targetPolicies.getContextPolicy(policy.getContextPath());

                if (targetPolicy == null || !targetPolicy.getContextPath().equals(policy.getContextPath())
                        || (targetPolicy.getRealm() != null
                                && !targetPolicy.getRealm().equals(policy.getRealm()))
                        || !targetPolicy.getAuthenticationMethods()
                                .containsAll(policy.getAuthenticationMethods())
                        || !targetPolicy.getAllowedAttributeNames()
                                .containsAll(policy.getAllowedAttributeNames())) {
                    return false;
                }
            }

            return true;
        }
    };
}

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From source file:org.jasig.portlet.blackboardvcportlet.dao.impl.BaseJpaDaoTest.java

/**
 * Deletes ALL entities from the database
 *///w ww.  ja va2s.  c om
@After
public final void deleteAllEntities() {
    final EntityManager entityManager = getEntityManager();
    final EntityManagerFactory entityManagerFactory = entityManager.getEntityManagerFactory();
    final Metamodel metamodel = entityManagerFactory.getMetamodel();
    Set<EntityType<?>> entityTypes = new LinkedHashSet<EntityType<?>>(metamodel.getEntities());

    do {
        final Set<EntityType<?>> failedEntitieTypes = new HashSet<EntityType<?>>();

        for (final EntityType<?> entityType : entityTypes) {
            final String entityClassName = entityType.getBindableJavaType().getName();

            try {
                this.executeInTransaction(new Callable<Object>() {
                    @Override
                    public Object call() throws Exception {
                        logger.trace("Purging all: " + entityClassName);

                        final Query query = entityManager
                                .createQuery("SELECT e FROM " + entityClassName + " AS e");
                        final List<?> entities = query.getResultList();
                        logger.trace("Found " + entities.size() + " " + entityClassName + " to delete");
                        for (final Object entity : entities) {
                            entityManager.remove(entity);
                        }

                        return null;
                    }
                });
            } catch (DataIntegrityViolationException e) {
                logger.trace(
                        "Failed to delete " + entityClassName + ". Must be a dependency of another entity");
                failedEntitieTypes.add(entityType);
            }
        }

        entityTypes = failedEntitieTypes;
    } while (!entityTypes.isEmpty());

    //Reset all spring managed mocks after every test
    MockitoFactoryBean.resetAllMocks();
}

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From source file:apiserver.services.cache.controllers.CacheDocumentController.java

/**
 * put document into cache, usable for future manipulations APIs
 *
 * @param uploadedFile uploaded file// w  w  w  . ja v a2s. co m
 * @param tags list of metadata tags
 * @return cache ID
 */
//@ApiOperation(value = "add a document to cache", multiValueResponse = true)
@RequestMapping(method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public WebAsyncTask<String> addDocument(
        @ApiParam(name = "uploadedFile", required = true) @RequestParam(value = "uploadedFile", required = true) MultipartFile uploadedFile,

        @ApiParam(name = "tags", required = false) @RequestParam(required = false) String[] tags)
        throws InterruptedException, TimeoutException, ExecutionException {
    final MultipartFile _file = uploadedFile;
    final String[] _tags = tags;

    Callable<String> callable = new Callable<String>() {
        @Override
        public String call() throws Exception {
            UploadDocumentJob job = new UploadDocumentJob(_file);
            job.setTags(_tags);

            Future<DocumentJob> imageFuture = documentAddGateway.addDocument(job);
            DocumentJob payload = imageFuture.get(defaultTimeout, TimeUnit.MILLISECONDS);

            return payload.getDocument().getId();
        }
    };

    return new WebAsyncTask<String>(10000, callable);
}

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From source file:com.microsoft.windowsazure.management.sql.RestoreDatabaseOperationsImpl.java

/**
* Issues a restore request for an Azure SQL Database.
*
* @param sourceServerName Required. The name of the Azure SQL Database
* Server where the source database is, or was, hosted.
* @param parameters Required. Additional parameters for the Create Restore
* Database Operation request.//w w w.  j ava 2 s .  c  o  m
* @return Contains the response to the Create Restore Database Operation
* request.
*/
@Override
public Future<RestoreDatabaseOperationCreateResponse> createAsync(final String sourceServerName,
        final RestoreDatabaseOperationCreateParameters parameters) {
    return this.getClient().getExecutorService().submit(new Callable<RestoreDatabaseOperationCreateResponse>() {
        @Override
        public RestoreDatabaseOperationCreateResponse call() throws Exception {
            return create(sourceServerName, parameters);
        }
    });
}

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From source file:com.taobao.datax.plugins.writer.ftpwriter.FtpWriter.java

private void initFtpHelperAndLogin() {
    if ("sftp".equalsIgnoreCase(this.protocol)) {
        this.port = param.getIntValue(ParamKey.PORT, Constant.DEFAULT_SFTP_PORT);
        this.ftpHelper = new SftpHelperImpl();
    } else if ("ftp".equalsIgnoreCase(this.protocol)) {
        this.port = param.getIntValue(ParamKey.PORT, Constant.DEFAULT_FTP_PORT);
        this.ftpHelper = new StandardFtpHelperImpl();
    } else {/*from   w  ww. j  a  v a 2 s  .co m*/
        throw new DataExchangeException(String.format(
                "? ftpsftp ?? , ?????: [%s]", protocol));
    }
    try {
        RetryUtil.executeWithRetry(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                ftpHelper.loginFtpServer(host, username, password, port, timeout);
                return null;
            }
        }, 3, 4000, true);
    } catch (Exception e) {
        String message = String.format(
                "ftp?, host:%s, username:%s, port:%s, errorMessage:%s", host,
                username, port, e.getMessage());
        LOG.error(message);
        throw new DataExchangeException(message, e);
    }
}

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From source file:com.atomicleopard.thundr.ftp.FtpSession.java

public boolean renameFile(final String from, final String to) {
    return timeLogAndCatch("Rename file", new Callable<Boolean>() {
        @Override//  ww  w.j av a  2  s  .  co  m
        public Boolean call() throws Exception {
            return preparedClient.rename(from, to);
        }
    });
}

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From source file:com.ebay.cloud.cms.sysmgmt.monitor.metrics.MongoMetric.java

private Map<String, Object> listDatabases(final MongoClient client) {
    try {/* w w w.  ja  v  a2 s .co  m*/
        Future<Map<String, Object>> future = executor.submit(new Callable<Map<String, Object>>() {
            @Override
            public Map<String, Object> call() {
                Map<String, Object> resultMap = new HashMap<String, Object>();
                List<String> databaseNames = client.getDatabaseNames();
                for (String databaseName : databaseNames) {
                    DB db = client.getDB(databaseName);
                    if (db != null) {
                        CommandResult cr = db.getStats();
                        if (cr != null) {
                            Object dataSize = cr.get("dataSize");
                            resultMap.put(databaseName, dataSize);
                        }
                    }
                }
                return resultMap;
            }
        });
        return future.get(listWaitPeroid, TimeUnit.MILLISECONDS);
    } catch (Exception e) {
        return Collections.emptyMap();
    }
}

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From source file:org.apache.cxf.dosgi.systests.common.AbstractListenerHookServiceListenerTest.java

public void testBasicInvocation() throws Exception {

    Thread.currentThread().setContextClassLoader(ClientProxyFactoryBean.class.getClassLoader());

    Server server1 = null;/*from   ww w  . j av a  2 s .  co m*/
    Server server2 = null;
    ServiceTracker tracker = null;
    try {
        server1 = startServer(ADDRESS1, GreeterService.class, new GreeterServiceImpl());

        server2 = startServer(ADDRESS2, GreeterService.class, new GreeterServiceImpl());
        tracker = new ServiceTracker(bundleContext, GreeterService.class.getName(), null) {
            @Override
            public Object addingService(final ServiceReference reference) {
                Object result = super.addingService(reference);

                FutureTask<Map<GreetingPhrase, String>> future = new FutureTask<Map<GreetingPhrase, String>>(
                        new Callable<Map<GreetingPhrase, String>>() {
                            public Map<GreetingPhrase, String> call() {
                                return useService(reference);
                            }
                        });
                future.run();
                synchronized (mutex1) {
                    synchronized (mutex2) {
                        if (task1 == null) {
                            task1 = future;
                            mutex1.notify();
                        } else if (task2 == null) {
                            task2 = future;
                            mutex2.notify();
                        }
                    }
                }
                return result;
            }
        };
        tracker.open();
        // sleep for a bit
        Thread.sleep(2000);

        installDswIfNeeded();

        verifyGreeterResponse(task1, mutex1);
        verifyGreeterResponse(task2, mutex2);
    } finally {
        if (tracker != null) {
            tracker.close();
        }

        if (server1 != null) {
            server1.getDestination().shutdown();
            server1.stop();
        }

        if (server2 != null) {
            server2.getDestination().shutdown();
            server2.stop();
        }

    }
}

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From source file:com.ebay.pulsar.analytics.security.spring.PermissionControlCache.java

private PermissionControlCache() {
    permissionControl = new UserPermissionControl();
    userService = new UserService();
    cache = CacheBuilder.newBuilder().maximumSize(SIZE_CACHE).expireAfterWrite(TIME_EXPIRE, TimeUnit.MINUTES)
            .refreshAfterWrite(TIME_REFRESH, TimeUnit.MINUTES).build(new CacheLoader<String, PulsarSession>() {
                @Override/*from  ww w  . j  a  v a 2  s .  co m*/
                public PulsarSession load(String userName) throws Exception {
                    return loadFromUnderlying(userName);
                }

                @Override
                public Map<String, PulsarSession> loadAll(Iterable<? extends String> keys) {
                    Map<String, PulsarSession> m = Maps.newHashMap();
                    for (String key : keys) {
                        try {
                            PulsarSession ps = load(key);
                            m.put(key, ps);
                        } catch (Exception e) {
                        }
                        ;
                    }
                    return m;
                }

                @Override
                public ListenableFuture<PulsarSession> reload(final String userName, PulsarSession prev) {
                    // asynchronous!
                    ListenableFutureTask<PulsarSession> task = ListenableFutureTask
                            .create(new Callable<PulsarSession>() {
                                public PulsarSession call() {
                                    return loadFromUnderlying(userName);
                                }
                            });
                    EXECUTOR.submit(task);
                    return task;
                }
            });
}

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