Example usage for java.util.concurrent Executors callable

Introduction

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

Prototype

public static Callable<Object> callable(final PrivilegedExceptionAction<?> action) 

Source Link

Document

Returns a Callable object that, when called, runs the given privileged exception action and returns its result.

Usage

From source file:Main.java

public static Future<Object> execute(final Runnable task) {
    return DEFAULT_EXECUTOR.submit(Executors.callable(task));
}

---

From source file:com.google.code.guice.repository.testing.junit.general.UserRepositoryTest.java

@Test
public void testRepo() throws Exception {
    userRepository.deleteAll();//w w w.  j  a  v  a  2  s  .  co m
    userRepository.someCustomMethod(new User("one", "two", 42));

    userRepository.deleteInactiveUsers();
    userRepository.deleteOtherUsers();

    userRepository.deleteAll();
    assertEquals("Invalid repository size", 0, userRepository.count());

    userRepository.save(new User("john", "smith", 42));
    userRepository.save(new User("alex", "johns", 33));
    userRepository.save(new User("sam", "brown", 22));
    assertEquals("Invalid repository size", 3, userRepository.count());

    assertNotNull("User not found", userRepository.findUserByName("john"));

    Page<User> users = userRepository.findAll(new PageRequest(0, 100));
    assertEquals("Invalid requested page size", 3, users.getNumberOfElements());

    ExecutorService executorService = Executors.newSingleThreadExecutor();
    executorService.invokeAll(Arrays.asList(Executors.callable(new Runnable() {
        @Override
        public void run() {
            try {
                logger.info("Start concurrent thread");
                UserRepository anotherRepo = userRepository;
                logger.info("count");
                assertEquals("Invalid repository size", 3, anotherRepo.count());
                logger.info("save");
                anotherRepo.save(new User(UUID.randomUUID().toString(), UUID.randomUUID().toString(), 10));
                assertEquals("Invalid repository size", 4, anotherRepo.count());
                logger.info("Stored 4");
            } catch (Exception e) {
                logger.error("Error", e);
            }
        }
    })));

    logger.info("After");
    assertEquals("Invalid repository size", 4, userRepository.count());
    userRepository.deleteAll();
    assertEquals("Invalid repository size", 0, userRepository.count());

    userRepository.someCustomMethod(new User("john", "smith", 42));
}

---

From source file:de.unisb.cs.st.javalanche.mutation.runtime.testDriver.MutationTestDriver.java

protected long runWithTimeout(MutationTestRunnable r) {
    long[] preIds = threadMxBean.getAllThreadIds();
    FutureTask<Object> future = new FutureTask<Object>(Executors.callable(r));
    Thread thread = new Thread(future);
    thread.setDaemon(true);//from   ww  w  . j  a va 2 s  . c  om
    logger.debug("Start  test: ");
    StopWatch stopWatch = new StopWatch();
    stopWatch.start();
    thread.start();
    String exceptionMessage = null;
    Throwable capturedThrowable = null;
    try {
        future.get(timeout, TimeUnit.SECONDS);
        logger.debug("Second timeout");
    } catch (InterruptedException e) {
        capturedThrowable = e;
    } catch (ExecutionException e) {
        capturedThrowable = e;
    } catch (TimeoutException e) {
        exceptionMessage = JavalancheMessages.MUTATION_TIME_LIMIT_MESSAGE + "Mutation causes test timeout";
        capturedThrowable = e;
    } catch (Throwable t) {
        capturedThrowable = t;
    } finally {
        if (capturedThrowable != null) {
            if (exceptionMessage == null) {
                exceptionMessage = "Exception caught during test execution.";
            }
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            capturedThrowable.printStackTrace(new PrintStream(out));
            logger.debug(
                    "Setting test failed. Message: " + exceptionMessage + " Exception " + capturedThrowable);
            r.setFailed(exceptionMessage, capturedThrowable);
        }
    }
    if (!future.isDone()) {
        r.setFailed(JavalancheMessages.MUTATION_TIME_LIMIT_MESSAGE
                + "Mutated Thread is still running after timeout.", null);
        switchOfMutation(future);
    }
    stopWatch.stop();
    if (!checkAllFinished(preIds)) {
        if (configuration.useThreadStop()) {
            stopThreads(preIds);
        } else {
            shutDown(r, stopWatch);
        }
    }
    logger.debug("End timed test, it took " + stopWatch.getTime() + " ms");
    return stopWatch.getTime();
}

---

From source file:nl.strohalm.cyclos.utils.tasks.TaskRunnerImpl.java

protected void doRunInitialization(final String beanName) {
    final InitializingService service = applicationContext.getBean(beanName, InitializingService.class);
    getTransactionHelper().runInCurrentThread(new TransactionCallbackWithoutResult() {
        @Override/* ww  w . j ava  2  s. c  o m*/
        protected void doInTransactionWithoutResult(final TransactionStatus status) {
            try {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Running initialization for bean " + beanName);
                }
                LoggedUser.runAsSystem(Executors.callable(new Runnable() {
                    @Override
                    public void run() {
                        service.initializeService();
                    }
                }));
            } catch (RuntimeException e) {
                LOG.error("Error running initialization for bean " + beanName, e);
                throw e;
            }
        }
    });
}

---

From source file:nl.strohalm.cyclos.utils.tasks.TaskRunnerImpl.java

private boolean doRunScheduledTask(final ScheduledTask task, final Calendar time) {
    try {//from w ww .ja v a2  s.c  o  m
        LoggedUser.runAsSystem(Executors.callable(new Runnable() {
            @Override
            public void run() {
                task.run(time);
            }
        }));
        return true;
    } catch (final Exception e) {
        LOG.error("Error running scheduled task " + task.getName(), e);
        return false;
    }
}

---

From source file:ome.logic.UpdateImpl.java

@RolesAllowed("system")
public void indexObject(IObject row) {
    if (row == null || row.getId() == null) {
        throw new ValidationException("Non-managed object cannot be indexed.");
    }//from  w  ww.ja  v a2  s .co  m

    CreationLogLoader logs = new CreationLogLoader(localQuery, row);
    FullTextIndexer fti = new FullTextIndexer(logs);

    final FullTextThread ftt = new FullTextThread(sessionManager, executor, fti, this.fullTextBridge, true);
    Future<Object> future = executor.submit(Executors.callable(ftt));
    executor.get(future);
}

---

From source file:omero.cmd.SessionI.java

public void submit_async(AMD_Session_submit __cb, omero.cmd.Request req, Ice.Current current) {
    try {//www  .j a v a2  s . com

        if (req == null || !IRequest.class.isAssignableFrom(req.getClass())) {
            log.info("Non-IRequest found:" + req);
            __cb.ice_response(null);
            return; // EARLY EXIT

        }

        Ice.Object servant = null;
        for (String key : Arrays.asList(req.ice_id(), _HandleTie.ice_staticId())) {
            try {
                servant = createServantDelegate(key);
                if (servant != null && servant instanceof IHandle) {
                    break;
                }
            } catch (Exception e) {
                log.debug(e.getClass().getName() + " on lookup of " + key);
            }
        }

        IHandle handle = null;
        if (servant != null) {
            if (servant instanceof Ice.TieBase) {
                Ice.TieBase tie = (Ice.TieBase) servant;
                Object delegate = tie.ice_delegate();
                if (IHandle.class.isAssignableFrom(delegate.getClass())) {
                    handle = (IHandle) delegate;
                }
            } else if (servant instanceof IHandle) {
                handle = (IHandle) servant;
            }
        }

        if (handle == null) {
            log.info("No handle found for " + req);
            InternalException ie = new InternalException();
            ie.message = "No handle found for " + req;
            __cb.ice_exception(ie);
            return; // EARLY EXIT
        }

        // ID
        Ice.Identity id = holder.getIdentity("IHandle" + UUID.randomUUID().toString());

        // Tie
        _HandleTie tie = (_HandleTie) servant;
        HandlePrx prx = HandlePrxHelper.checkedCast(registerServant(id, tie));

        // Init
        try {
            handle.initialize(id, (IRequest) req, current.ctx);
            executor.submit(current.ctx, Executors.callable(handle));
            __cb.ice_response(prx);
        } catch (Throwable e) {
            log.error("Exception on startup; removing handle " + id, e);
            unregisterServant(id);
            throw e;
        }
    } catch (Exception e) {
        log.error("Exception on " + req);
        __cb.ice_exception(e);
    } catch (Throwable t) {
        log.error("Throwable on " + req);
        RuntimeException rt = new RuntimeException("Throwable raised on " + req);
        rt.initCause(t);
        throw rt;
    }
}

---

From source file:org.opennms.web.rest.UserRestServiceTest.java

@Test
public void testWriteALotOfUsers() throws Exception {
    int userCount = 50;

    // Limit the thread pool so that we don't exhaust all of the database connections
    ExecutorService pool = Executors.newFixedThreadPool(25);
    List<Future<?>> createFutures = new ArrayList<Future<?>>();
    for (int i = 0; i < userCount; i++) {
        final String userName = "test" + i;
        createFutures.add(pool.submit(Executors.callable(new Runnable() {
            @Override//from  w w  w.j av a 2s . c  o  m
            public void run() {
                try {
                    createUser(userName, userName + "@opennms.org");
                } catch (Exception e) {
                    e.printStackTrace();
                    fail(e.getMessage());
                }
            }
        })));
    }

    // Wait for all of the REST operations to complete
    for (Future<?> future : createFutures) {
        future.get();
    }

    // validate list
    OnmsUserList users = JaxbUtils.unmarshal(OnmsUserList.class, sendRequest(GET, "/users", 200));
    assertNotNull(users);
    assertEquals(userCount + 1, users.size()); //+1 because user "admin" is there before creating all the new users.

    // Try changing the password for every user to make sure that they
    // are properly accessible in the UserManager
    for (int i = 0; i < userCount; i++) {
        // validate each created user
        String xml = sendRequest(GET, "/users/test" + i, 200);
        OnmsUser eachUser = JaxbUtils.unmarshal(OnmsUser.class, xml);
        assertEquals("test" + i, eachUser.getUsername());
        assertEquals("test" + i + " Full Name", eachUser.getFullName());
        assertEquals("test" + i + "@opennms.org", eachUser.getEmail());
        assertEquals("Autogenerated by a unit test...", eachUser.getComments());

        // change
        sendPut("/users/test" + i, "password=MONKEYS&email=TEST@OPENNMS.COM", 303, "/users/test" + i);

        // validate change of password
        eachUser = JaxbUtils.unmarshal(OnmsUser.class, sendRequest(GET, "/users/test" + i, 200));
        User castorUser = getWebAppContext().getBean(UserManager.class).getUser("test" + i);
        assertEquals(castorUser.getPassword().getContent(), "MONKEYS");

        // validate change of email
        assertEquals("TEST@OPENNMS.COM", eachUser.getEmail());
    }
}

---

From source file:org.opennms.web.rest.v1.UserRestServiceIT.java

@Test
public void testWriteALotOfUsers() throws Exception {
    int userCount = 50;

    // Limit the thread pool so that we don't exhaust all of the database connections
    ExecutorService pool = Executors.newFixedThreadPool(25);
    List<Future<?>> createFutures = new ArrayList<Future<?>>();
    for (int i = 0; i < userCount; i++) {
        final String userName = "test" + i;
        createFutures.add(pool.submit(Executors.callable(new Runnable() {
            @Override//www .ja v  a 2s .  c  o m
            public void run() {
                try {
                    setUser("admin", new String[] { "ROLE_ADMIN" });
                    createUser(userName, userName + "@opennms.org", 201, "/users/" + userName);
                } catch (Exception e) {
                    e.printStackTrace();
                    fail(e.getMessage());
                }
            }
        })));
    }

    // Wait for all of the REST operations to complete
    for (Future<?> future : createFutures) {
        future.get();
    }

    // validate list
    OnmsUserList users = JaxbUtils.unmarshal(OnmsUserList.class, sendRequest(GET, "/users", 200));
    assertNotNull(users);
    assertEquals(userCount + 1, users.size()); //+1 because user "admin" is there before creating all the new users.

    // Try changing the password for every user to make sure that they
    // are properly accessible in the UserManager
    for (int i = 0; i < userCount; i++) {
        // validate each created user
        String xml = sendRequest(GET, "/users/test" + i, 200);
        OnmsUser eachUser = JaxbUtils.unmarshal(OnmsUser.class, xml);
        assertEquals("test" + i, eachUser.getUsername());
        assertEquals("test" + i + " Full Name", eachUser.getFullName());
        assertEquals("test" + i + "@opennms.org", eachUser.getEmail());
        assertEquals("Autogenerated by a unit test...", eachUser.getComments());

        // change
        sendPut("/users/test" + i, "password=MONKEYS&email=TEST@OPENNMS.COM", 204);

        // validate change of password
        eachUser = JaxbUtils.unmarshal(OnmsUser.class, sendRequest(GET, "/users/test" + i, 200));
        User castorUser = m_userManager.getUser("test" + i);
        assertEquals(castorUser.getPassword().getContent(), "MONKEYS");

        // validate change of email
        assertEquals("TEST@OPENNMS.COM", eachUser.getEmail());
    }
}

---

From source file:pl.nask.hsn2.os.Main.java

private static void createConnectors(List<Callable<Object>> connectors, int count, String queueName) {
    for (int i = 0; i < count; i++) {
        ObjectStoreConnector connector = new ObjectStoreConnector(queueName, jobFinishedIgnore);
        connectors.add(Executors.callable(connector));
    }/*from  ww w .  j  av a  2s  .  c o  m*/
}

---