Package org.apache.twill.common

Examples of org.apache.twill.common.Cancellable.cancel()

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    // Check it exists.
    Assert.assertTrue(serviceDiscovered.contains(discoverable));

    // Remove the service
    cancellable.cancel();

    // There should be no service.
    Assert.assertTrue(waitTillExpected(0, serviceDiscovered));

    Assert.assertFalse(serviceDiscovered.contains(discoverable));
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    Assert.assertNotNull(discoverables);
    Assert.assertEquals(2, discoverables.size());

    // Cancel both of them
    cancellable.cancel();
    cancellable2.cancel();

    // There could be more than one event triggered, but the last event should be an empty list.
    discoverables = events.poll(5, TimeUnit.SECONDS);
    Assert.assertNotNull(discoverables);
    if (!discoverables.isEmpty()) {
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    Assert.assertNotNull(events.poll(3, TimeUnit.SECONDS));

    // Register a new service endpoint, wait a short while and then cancel the listener
    register(discoveryService, serviceName, "localhost", 1);
    TimeUnit.SECONDS.sleep(1);
    cancelWatch.cancel();

    // The change listener shouldn't get any event, since the invocation is delayed by the executor.
    Assert.assertNull(events.poll(3, TimeUnit.SECONDS));
  }
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        stopLatch.countDown();
      }
    });

    Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
    cancel.cancel();
    Assert.assertTrue(stopLatch.await(1, TimeUnit.SECONDS));
  }

  @Test
  public void testBrokerChange() throws Exception {
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                return;
              }
              if (nodeChildren.getChildren().isEmpty()) {     // No more child, means no live instances
                Cancellable removed = watched.remove(appName);
                if (removed != null) {
                  removed.cancel();
                }
                return;
              }
              synchronized (YarnTwillRunnerService.this) {
                // For each of the children, which the node name is the runId,
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      LOG.error("Caught exception in HTTP Service run", e);
    } catch (ExecutionException e) {
      LOG.error("Caught exception in HTTP Service run", e);
    } finally {
      // once the service has been stopped, don't announce it anymore.
      contextCancellable.cancel();
      timer.cancel();

      // Go through all non-cleanup'ed handler and call destroy() upon them
      // At this point, there should be no call to any handler method, hence it's safe to call from this thread
      for (HandlerContextPair handlerContextPair : handlerReferences.values()) {
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    ServiceDiscovered discoverables = discoveryServiceClient.discover("test_double_reg");

    Assert.assertTrue(waitTillExpected(1, discoverables));

    cancellable.cancel();
    cancellable2.cancel();

    // Register again with two different clients, but killing session of the first one.
    final ZKClientService zkClient2 = ZKClientServices.delegate(
      ZKClients.retryOnFailure(
        ZKClients.reWatchOnExpire(
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    // Reconnection would trigger re-registration.
    Assert.assertTrue(waitTillExpected(2, discoverables));

    cancellable.cancel();
    cancellable2.cancel();

    // Verify that both are now gone.
    Assert.assertTrue(waitTillExpected(0, discoverables));
  }
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    // Check it exists.
    Assert.assertTrue(serviceDiscovered.contains(discoverable));

    // Remove the service
    cancellable.cancel();

    // There should be no service.
    Assert.assertTrue(waitTillExpected(0, serviceDiscovered));

    Assert.assertFalse(serviceDiscovered.contains(discoverable));
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    Assert.assertNotNull(discoverables);
    Assert.assertEquals(2, discoverables.size());

    // Cancel both of them
    cancellable.cancel();
    cancellable2.cancel();

    // There could be more than one event triggered, but the last event should be an empty list.
    discoverables = events.poll(5, TimeUnit.SECONDS);
    Assert.assertNotNull(discoverables);
    if (!discoverables.isEmpty()) {
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