本文整理汇总了C++中Future::at方法的典型用法代码示例。如果您正苦于以下问题：C++ Future::at方法的具体用法？C++ Future::at怎么用？C++ Future::at使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Future的用法示例。
在下文中一共展示了Future::at方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: detector
// This test verifies that the master reconciles operations that are missing
// from a reregistering slave. In this case, we drop the ApplyOperationMessage
// and expect the master to send a ReconcileOperationsMessage after the slave
// reregisters.
TEST_F(MasterSlaveReconciliationTest, ReconcileDroppedOperation)
{
Try<Owned<cluster::Master>> master = StartMaster();
ASSERT_SOME(master);
StandaloneMasterDetector detector(master.get()->pid);
Future<UpdateSlaveMessage> updateSlaveMessage =
FUTURE_PROTOBUF(UpdateSlaveMessage(), _, _);
Try<Owned<cluster::Slave>> slave = StartSlave(&detector);
ASSERT_SOME(slave);
// Since any out-of-sync operation state in `UpdateSlaveMessage` triggers a
// reconciliation, await the message from the initial agent registration
// sequence beforce continuing. Otherwise we risk the master reconciling with
// the agent before we fail over the master.
AWAIT_READY(updateSlaveMessage);
// Register the framework in a non-`*` role so it can reserve resources.
FrameworkInfo frameworkInfo = DEFAULT_FRAMEWORK_INFO;
frameworkInfo.set_roles(0, DEFAULT_TEST_ROLE);
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, frameworkInfo, 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);
// We prevent the operation from reaching the agent.
Future<ApplyOperationMessage> applyOperationMessage =
DROP_PROTOBUF(ApplyOperationMessage(), _, _);
// Perform a reserve operation on the offered resources.
// This will trigger an `ApplyOperationMessage`.
ASSERT_FALSE(offers->empty());
const Offer& offer = offers->at(0);
Resources reservedResources = offer.resources();
reservedResources =
reservedResources.pushReservation(createDynamicReservationInfo(
frameworkInfo.roles(0), frameworkInfo.principal()));
driver.acceptOffers({offer.id()}, {RESERVE(reservedResources)});
AWAIT_READY(applyOperationMessage);
// We expect the master to detect the missing operation when the
// slave reregisters and to reconcile the operations on that slave.
Future<ReconcileOperationsMessage> reconcileOperationsMessage =
FUTURE_PROTOBUF(ReconcileOperationsMessage(), _, _);
// Simulate a master failover to trigger slave reregistration.
detector.appoint(master.get()->pid);
AWAIT_READY(reconcileOperationsMessage);
ASSERT_EQ(1, reconcileOperationsMessage->operations_size());
EXPECT_EQ(
applyOperationMessage->operation_uuid(),
reconcileOperationsMessage->operations(0).operation_uuid());
}