Example usage for java.util.concurrent ScheduledThreadPoolExecutor getQueue

Introduction

In this page you can find the example usage for java.util.concurrent ScheduledThreadPoolExecutor getQueue.

Prototype

public BlockingQueue<Runnable> getQueue() 

Source Link

Document

Returns the task queue used by this executor.

Usage

From source file:com.ksc.http.timers.ClientExecutionAndRequestTimerTestUtils.java

/**
 * If the request completes successfully then the timer task should be canceled and should be
 * removed from the thread pool to prevent build up of canceled tasks
 * /*from ww  w  .j  a v  a  2s .  c  om*/
 * @param timerExecutor
 *            Executor used by timer implementation
 */
public static void assertCanceledTasksRemoved(ScheduledThreadPoolExecutor timerExecutor) {
    waitBeforeAssertOnExecutor();
    assertEquals(0, timerExecutor.getQueue().size());
}

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From source file:com.amazonaws.http.AmazonHttpClientRequestTimeoutTest.java

@Test
public void testRequestTimerCancelledTask() throws IOException, InterruptedException {
    ClientConfiguration config = new ClientConfiguration().withRequestTimeout(5 * 1000).withMaxErrorRetry(0);
    HttpClientFactory httpClientFactory = new HttpClientFactory();
    HttpClient rawHttpClient = spy(httpClientFactory.createHttpClient(config));

    HttpResponseProxy responseProxy = createHttpResponseProxySpy();
    doReturn(responseProxy).when(rawHttpClient).execute(any(HttpRequestBase.class), any(HttpContext.class));

    String localhostEndpoint = "http://localhost:0";
    Request<?> request = new EmptyHttpRequest(localhostEndpoint, HttpMethodName.GET);

    AmazonHttpClient httpClient = new AmazonHttpClient(config, rawHttpClient, null);

    try {//from  w ww.  j av a  2  s .  c  om
        httpClient.execute(request, new NullResponseHandler(), new NullErrorResponseHandler(),
                new ExecutionContext());
        Assert.fail("Should have been unable to unmarshall the response!");
    } catch (AmazonClientException e) {
        Assert.assertTrue(e.getCause() instanceof RuntimeException);
        RuntimeException re = (RuntimeException) e.getCause();
        Assert.assertTrue(re.getMessage().contains("Unable to unmarshall response"));
    }

    /* Verify the response was buffered when enforcing the request timeout. */
    verify(responseProxy).setEntity(any(BufferedHttpEntity.class));

    /* Verify cancelled tasks are removed on demand and the core threads die out after the keep alive time. */
    ScheduledThreadPoolExecutor httpRequestTimer = httpClient.getHttpRequestTimer().getExecutor();
    Assert.assertEquals(0, httpRequestTimer.getCompletedTaskCount());
    Assert.assertEquals(0, httpRequestTimer.getQueue().size());
    Assert.assertEquals(1, httpRequestTimer.getPoolSize());
    Thread.sleep(httpRequestTimer.getKeepAliveTime(TimeUnit.MILLISECONDS) + 1000);
    Assert.assertEquals(0, httpRequestTimer.getPoolSize());

    httpClient.shutdown();
}

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