C++ Future::source方法代码示例

// This test ensures that the driver handles an empty slave id
// in an acknowledgement message by dropping it. The driver will
// log an error in this case (but we don't test for that). We
// generate a status with no slave id by performing reconciliation.
TEST_F(MesosSchedulerDriverTest, ExplicitAcknowledgementsUnsetSlaveID)
{
  Try<Owned<cluster::Master>> master = StartMaster();
  ASSERT_SOME(master);

  MockScheduler sched;
  MesosSchedulerDriver driver(
      &sched,
      DEFAULT_FRAMEWORK_INFO,
      master.get()->pid,
      false,
      DEFAULT_CREDENTIAL);

  Future<Nothing> registered;
  EXPECT_CALL(sched, registered(&driver, _, _))
    .WillOnce(FutureSatisfy(&registered));

  // Ensure no status update acknowledgements are sent to the master.
  EXPECT_NO_FUTURE_CALLS(
      mesos::scheduler::Call(),
      mesos::scheduler::Call::ACKNOWLEDGE,
      _ ,
      master.get()->pid);

  driver.start();

  AWAIT_READY(registered);

  Future<TaskStatus> update;
  EXPECT_CALL(sched, statusUpdate(&driver, _))
    .WillOnce(FutureArg<1>(&update));

  // Peform reconciliation without using a slave id.
  vector<TaskStatus> statuses;

  TaskStatus status;
  status.mutable_task_id()->set_value("foo");
  status.set_state(TASK_RUNNING);

  statuses.push_back(status);

  driver.reconcileTasks(statuses);

  AWAIT_READY(update);
  ASSERT_EQ(TASK_LOST, update->state());
  ASSERT_EQ(TaskStatus::SOURCE_MASTER, update->source());
  ASSERT_EQ(TaskStatus::REASON_RECONCILIATION, update->reason());
  ASSERT_FALSE(update->has_slave_id());

  // Now send the acknowledgement.
  driver.acknowledgeStatusUpdate(update.get());

  // Settle the clock to ensure driver processes the acknowledgement,
  // which should get dropped due to the missing slave id.
  Clock::pause();
  Clock::settle();

  driver.stop();
  driver.join();
}

// Verify that a task that tries to consume more space than it has requested
// is only allowed to consume exactly the assigned resources. We tell dd
// to write 2MB but only give it 1MB of resources and (roughly) verify that
// it exits with a failure (that should be a write error).
TEST_F(ROOT_XFS_QuotaTest, DiskUsageExceedsQuota)
{
  Try<Owned<cluster::Master>> master = StartMaster();
  ASSERT_SOME(master);

  Owned<MasterDetector> detector = master.get()->createDetector();
  Try<Owned<cluster::Slave>> slave =
    StartSlave(detector.get(), CreateSlaveFlags());
  ASSERT_SOME(slave);

  MockScheduler sched;
  MesosSchedulerDriver driver(
      &sched, DEFAULT_FRAMEWORK_INFO, master.get()->pid, DEFAULT_CREDENTIAL);

  EXPECT_CALL(sched, registered(&driver, _, _));

  Future<vector<Offer>> offers;
  EXPECT_CALL(sched, resourceOffers(&driver, _))
    .WillOnce(FutureArg<1>(&offers))
    .WillRepeatedly(Return()); // Ignore subsequent offers.

  driver.start();

  AWAIT_READY(offers);
  ASSERT_FALSE(offers->empty());

  const Offer& offer = offers.get()[0];

  // Create a task which requests 1MB disk, but actually uses more
  // than 2MB disk.
  TaskInfo task = createTask(
      offer.slave_id(),
      Resources::parse("cpus:1;mem:128;disk:1").get(),
      "dd if=/dev/zero of=file bs=1048576 count=2");

  Future<TaskStatus> startingStatus;
  Future<TaskStatus> runningStatus;
  Future<TaskStatus> failedStatus;
  EXPECT_CALL(sched, statusUpdate(&driver, _))
    .WillOnce(FutureArg<1>(&startingStatus))
    .WillOnce(FutureArg<1>(&runningStatus))
    .WillOnce(FutureArg<1>(&failedStatus));

  driver.launchTasks(offer.id(), {task});

  AWAIT_READY(startingStatus);
  EXPECT_EQ(task.task_id(), startingStatus->task_id());
  EXPECT_EQ(TASK_STARTING, startingStatus->state());

  AWAIT_READY(runningStatus);
  EXPECT_EQ(task.task_id(), runningStatus->task_id());
  EXPECT_EQ(TASK_RUNNING, runningStatus->state());

  AWAIT_READY(failedStatus);
  EXPECT_EQ(task.task_id(), failedStatus->task_id());
  EXPECT_EQ(TASK_FAILED, failedStatus->state());

  // Unlike the 'disk/du' isolator, the reason for task failure
  // should be that dd got an IO error.
  EXPECT_EQ(TaskStatus::SOURCE_EXECUTOR, failedStatus->source());
  EXPECT_EQ("Command exited with status 1", failedStatus->message());

  driver.stop();
  driver.join();
}