Example usage for org.apache.commons.lang3.concurrent ConcurrentUtils constantFuture

Introduction

In this page you can find the example usage for org.apache.commons.lang3.concurrent ConcurrentUtils constantFuture.

Prototype

public static <T> Future<T> constantFuture(final T value) 

Source Link

Document

Gets an implementation of Future that is immediately done and returns the specified constant value.

Usage

From source file:com.netflix.hystrix.contrib.javanica.collapser.CollapserResult.java

/**
 * This method is used in asynchronous calls.
 *
 * @param <T> the result type//from w ww  .j a va  2  s . co m
 * @return fake instance of Future
 */
public static <T> Future<T> async() {
    return ConcurrentUtils.constantFuture(null);
}

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From source file:com.microsoft.azure.storage.DictionaryKeyResolver.java

@Override
public Future<IKey> resolveKeyAsync(String keyId) {
    return ConcurrentUtils.constantFuture(this.keys.get(keyId));
}

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From source file:com.microsoft.azure.storage.util.LocalResolver.java

/**
 * Map from a keyID to a key. This will be called when decrypting. The data
 * to decrypt will include the keyID used to encrypt it.
 * /*  w w w .ja v  a  2  s. co m*/
 * @param keyId
 *            The KeyID to map to a key
 */
@Override
public Future<IKey> resolveKeyAsync(String keyId) {
    return ConcurrentUtils.constantFuture(this.keys.get(keyId));
}

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From source file:com.epimorphics.registry.util.RunShell.java

public Future<Boolean> run(String... args) {
    String[] argA = new String[2 + args.length];
    argA[0] = DEFAULT_SHELL;/*www  . j a v a 2s.  c o  m*/
    argA[1] = scriptFile;
    for (int i = 0; i < args.length; i++) {
        argA[2 + i] = args[i];
    }
    ProcessBuilder scriptPB = new ProcessBuilder(argA);
    scriptPB.redirectErrorStream(true);

    try {
        Process scriptProcess = scriptPB.start();
        Future<Boolean> scriptStatus = TimerManager.get().submit(new TrackShell(scriptProcess));
        return scriptStatus;
    } catch (IOException e) {
        log.error("Error invoking script: " + scriptFile, e);
        return ConcurrentUtils.constantFuture(false);
    }
}

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From source file:com.yahoo.bard.webservice.druid.client.impl.AsyncDruidWebServiceImplWrapper.java

/**
 * Capture arguments to test for expected values.
 * Since there is no response, the future will hold a null value.
 *
 * @param success  callback for handling successful requests.
 * @param error  callback for handling http errors.
 * @param failure  callback for handling exception failures.
 * @param requestBuilder  The bound request builder for the request to be sent.
 * @param timerName  The name that distinguishes this request as part of a druid query or segment metadata request
 * @param outstanding  The counter that keeps track of the outstanding (in flight) requests for the top level query
 *
 * @return a future with a null response.
 *//* www.  j  a  va2s .c  om*/
@Override
protected Future<Response> sendRequest(final SuccessCallback success, final HttpErrorCallback error,
        final FailureCallback failure, final BoundRequestBuilder requestBuilder, final String timerName,
        final AtomicLong outstanding) {
    this.request = requestBuilder.build();
    return ConcurrentUtils.constantFuture(null);
}

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From source file:ch.cyberduck.core.AbstractController.java

/**
 * Will queue up the <code>BackgroundAction</code> to be run in a background thread
 *
 * @param action The runnable to execute in a secondary thread
 *//*from   ww  w. java2  s.  c o  m*/
@Override
public <T> Future<T> background(final BackgroundAction<T> action) {
    if (registry.contains(action)) {
        log.warn(String.format("Skip duplicate background action %s found in registry", action));
        return ConcurrentUtils.constantFuture(null);
    }
    return DefaultBackgroundExecutor.get().execute(this, registry, action);
}

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From source file:com.mcleodmoores.mvn.natives.BuildMojoTest.java

public void testExecute() throws Exception {
    final BuildMojo instance = executeInstance();
    final ProcessExecutor executor = Mockito.mock(ProcessExecutor.class);
    Mockito.when(executor.exec("build.bat")).thenReturn(ConcurrentUtils.constantFuture(0));
    instance.setExecutor(executor);//w w  w  . j ava 2 s.c o  m
    instance.execute();
    Mockito.verify(executor).exec("build.bat");
}

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From source file:ch.cyberduck.core.threading.DefaultBackgroundExecutor.java

@Override
public <T> Future<T> execute(final Controller controller, final BackgroundActionRegistry registry,
        final BackgroundAction<T> action) {
    if (log.isDebugEnabled()) {
        log.debug(String.format("Run action %s in background", action));
    }/*w  w w.  ja  va  2s. c  om*/
    registry.add(action);
    action.init();
    // Start background task
    final Callable<T> command = new BackgroundCallable<T>(action, controller, registry);
    try {
        final Future<T> task = concurrentExecutor.execute(command);
        if (log.isInfoEnabled()) {
            log.info(String.format("Scheduled background runnable %s for execution", action));
        }
        return task;
    } catch (RejectedExecutionException e) {
        log.error(
                String.format("Error scheduling background task %s for execution. %s", action, e.getMessage()));
        action.cleanup();
        return ConcurrentUtils.constantFuture(null);
    }
}

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From source file:com.mcleodmoores.mvn.natives.BuildMojoTest.java

@Test(expectedExceptions = MojoFailureException.class)
public void testExecuteExitCodeFail() throws Exception {
    final BuildMojo instance = executeInstance();
    final ProcessExecutor executor = Mockito.mock(ProcessExecutor.class);
    Mockito.when(executor.exec("build.bat")).thenReturn(ConcurrentUtils.constantFuture(1));
    instance.setExecutor(executor);//  w w w  .  java 2s.c o  m
    instance.execute();
}

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From source file:io.cloudslang.lang.logging.LoggingServiceImplTest.java

@Test
public void testLogEventWithTwoParams() {
    final List<Runnable> runnableList = new ArrayList<>();
    final MutableInt mutableInt = new MutableInt(0);
    doAnswer(new Answer() {
        @Override//  w  w w . jav  a  2s  .  co  m
        public Object answer(InvocationOnMock invocationOnMock) throws Throwable {
            mutableInt.increment();
            Object[] arguments = invocationOnMock.getArguments();
            runnableList.add((Runnable) arguments[0]);
            if (mutableInt.getValue() == 1) {
                return ConcurrentUtils.constantFuture("aaa");
            } else if (mutableInt.getValue() == 2) {
                return ConcurrentUtils.constantFuture("bbb");
            } else {
                return null;
            }
        }
    }).when(singleThreadExecutor).submit(Mockito.any(Runnable.class));

    // Tested calls
    loggingService.logEvent(Level.INFO, "aaa");
    loggingService.logEvent(Level.ERROR, "bbb");

    assertEquals(2, runnableList.size());

    assertTrue(runnableList.get(0) instanceof LoggingServiceImpl.LoggingDetailsRunnable);
    assertTrue(runnableList.get(1) instanceof LoggingServiceImpl.LoggingDetailsRunnable);

    assertEquals(new LoggingServiceImpl.LoggingDetailsRunnable(Level.INFO, "aaa"), runnableList.get(0));
    assertEquals(new LoggingServiceImpl.LoggingDetailsRunnable(Level.ERROR, "bbb"), runnableList.get(1));
}

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