// This test verifies that the master reconciles tasks that are
// missing from a re-registering slave. In this case, we trigger
// a race between the slave re-registration message and the launch
// message. There should be no TASK_LOST.
// This was motivated by MESOS-1696.
TEST_F(MasterSlaveReconciliationTest, ReconcileRace)
{
Try<PID<Master> > master = StartMaster();
ASSERT_SOME(master);
MockExecutor exec(DEFAULT_EXECUTOR_ID);
StandaloneMasterDetector detector(master.get());
Future<SlaveRegisteredMessage> slaveRegisteredMessage =
FUTURE_PROTOBUF(SlaveRegisteredMessage(), master.get(), _);
Try<PID<Slave> > slave = StartSlave(&exec, &detector);
ASSERT_SOME(slave);
AWAIT_READY(slaveRegisteredMessage);
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, DEFAULT_FRAMEWORK_INFO, master.get(), 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();
// Trigger a re-registration of the slave and capture the message
// so that we can spoof a race with a launch task message.
DROP_PROTOBUFS(ReregisterSlaveMessage(), slave.get(), master.get());
Future<ReregisterSlaveMessage> reregisterSlaveMessage =
DROP_PROTOBUF(ReregisterSlaveMessage(), slave.get(), master.get());
detector.appoint(master.get());
AWAIT_READY(reregisterSlaveMessage);
AWAIT_READY(offers);
EXPECT_NE(0u, offers.get().size());
TaskInfo task;
task.set_name("test task");
task.mutable_task_id()->set_value("1");
task.mutable_slave_id()->MergeFrom(offers.get()[0].slave_id());
task.mutable_resources()->MergeFrom(offers.get()[0].resources());
task.mutable_executor()->MergeFrom(DEFAULT_EXECUTOR_INFO);
ExecutorDriver* executorDriver;
EXPECT_CALL(exec, registered(_, _, _, _))
.WillOnce(SaveArg<0>(&executorDriver));
// Leave the task in TASK_STAGING.
Future<Nothing> launchTask;
EXPECT_CALL(exec, launchTask(_, _))
.WillOnce(FutureSatisfy(&launchTask));
EXPECT_CALL(sched, statusUpdate(&driver, _))
.Times(0);
driver.launchTasks(offers.get()[0].id(), {task});
AWAIT_READY(launchTask);
// Send the stale re-registration message, which does not contain
// the task we just launched. This will trigger a reconciliation
// by the master.
Future<SlaveReregisteredMessage> slaveReregisteredMessage =
FUTURE_PROTOBUF(SlaveReregisteredMessage(), _, _);
// Prevent this from being dropped per the DROP_PROTOBUFS above.
FUTURE_PROTOBUF(ReregisterSlaveMessage(), slave.get(), master.get());
process::post(slave.get(), master.get(), reregisterSlaveMessage.get());
AWAIT_READY(slaveReregisteredMessage);
// Neither the master nor the slave should not send a TASK_LOST
// as part of the reconciliation. We check this by calling
// Clock::settle() to flush all pending events.
Clock::pause();
Clock::settle();
Clock::resume();
// Now send TASK_FINISHED and make sure it's the only message
// received by the scheduler.
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&status));
TaskStatus taskStatus;
taskStatus.mutable_task_id()->CopyFrom(task.task_id());
taskStatus.set_state(TASK_FINISHED);
executorDriver->sendStatusUpdate(taskStatus);
AWAIT_READY(status);
ASSERT_EQ(TASK_FINISHED, status.get().state());
EXPECT_CALL(exec, shutdown(_))
.Times(AtMost(1));
driver.stop();
driver.join();
Shutdown();
}
// This test verifies that the slave and status update manager
// properly handle duplicate status updates, when the second
// update with the same UUID is received before the ACK for the
// first update. The proper behavior here is for the status update
// manager to drop the duplicate update.
TEST_F(StatusUpdateManagerTest, DuplicateUpdateBeforeAck)
{
Try<PID<Master> > master = StartMaster();
ASSERT_SOME(master);
MockExecutor exec(DEFAULT_EXECUTOR_ID);
Try<PID<Slave> > slave = StartSlave(&exec);
ASSERT_SOME(slave);
FrameworkInfo frameworkInfo = DEFAULT_FRAMEWORK_INFO;
frameworkInfo.set_checkpoint(true); // Enable checkpointing.
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, frameworkInfo, master.get(), DEFAULT_CREDENTIAL);
FrameworkID frameworkId;
EXPECT_CALL(sched, registered(_, _, _))
.WillOnce(SaveArg<1>(&frameworkId));
Future<vector<Offer> > offers;
EXPECT_CALL(sched, resourceOffers(_, _))
.WillOnce(FutureArg<1>(&offers))
.WillRepeatedly(Return()); // Ignore subsequent offers.
driver.start();
AWAIT_READY(offers);
EXPECT_NE(0u, offers.get().size());
ExecutorDriver* execDriver;
EXPECT_CALL(exec, registered(_, _, _, _))
.WillOnce(SaveArg<0>(&execDriver));
EXPECT_CALL(exec, launchTask(_, _))
.WillOnce(SendStatusUpdateFromTask(TASK_RUNNING));
// Capture the first status update message.
Future<StatusUpdateMessage> statusUpdateMessage =
FUTURE_PROTOBUF(StatusUpdateMessage(), _, _);
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(_, _))
.WillOnce(FutureArg<1>(&status));
// Drop the first ACK from the scheduler to the slave.
Future<StatusUpdateAcknowledgementMessage> statusUpdateAckMessage =
DROP_PROTOBUF(StatusUpdateAcknowledgementMessage(), _, slave.get());
Clock::pause();
driver.launchTasks(offers.get()[0].id(), createTasks(offers.get()[0]));
AWAIT_READY(statusUpdateMessage);
AWAIT_READY(status);
EXPECT_EQ(TASK_RUNNING, status.get().state());
AWAIT_READY(statusUpdateAckMessage);
Future<Nothing> __statusUpdate =
FUTURE_DISPATCH(slave.get(), &Slave::__statusUpdate);
// Now resend the TASK_RUNNING update.
process::post(slave.get(), statusUpdateMessage.get());
// At this point the status update manager has handled
// the duplicate status update.
AWAIT_READY(__statusUpdate);
// After we advance the clock, the status update manager should
// retry the TASK_RUNNING update and the scheduler should receive
// and acknowledge it.
Future<TaskStatus> update;
EXPECT_CALL(sched, statusUpdate(_, _))
.WillOnce(FutureArg<1>(&update));
Clock::advance(slave::STATUS_UPDATE_RETRY_INTERVAL_MIN);
Clock::settle();
// Ensure the scheduler receives TASK_FINISHED.
AWAIT_READY(update);
EXPECT_EQ(TASK_RUNNING, update.get().state());
EXPECT_CALL(exec, shutdown(_))
.Times(AtMost(1));
Clock::resume();
driver.stop();
driver.join();
Shutdown();
}
// This test verifies that the master reconciles tasks that are
// missing from a re-registering slave. In this case, we drop the
// RunTaskMessage so the slave should send TASK_LOST.
TEST_F(MasterSlaveReconciliationTest, ReconcileLostTask)
{
Try<PID<Master> > master = StartMaster();
ASSERT_SOME(master);
StandaloneMasterDetector detector(master.get());
Try<PID<Slave> > slave = StartSlave(&detector);
ASSERT_SOME(slave);
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, DEFAULT_FRAMEWORK_INFO, master.get(), 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);
EXPECT_NE(0u, offers.get().size());
TaskInfo task;
task.set_name("test task");
task.mutable_task_id()->set_value("1");
task.mutable_slave_id()->MergeFrom(offers.get()[0].slave_id());
task.mutable_resources()->MergeFrom(offers.get()[0].resources());
task.mutable_executor()->MergeFrom(DEFAULT_EXECUTOR_INFO);
// We now launch a task and drop the corresponding RunTaskMessage on
// the slave, to ensure that only the master knows about this task.
Future<RunTaskMessage> runTaskMessage =
DROP_PROTOBUF(RunTaskMessage(), _, _);
driver.launchTasks(offers.get()[0].id(), {task});
AWAIT_READY(runTaskMessage);
Future<SlaveReregisteredMessage> slaveReregisteredMessage =
FUTURE_PROTOBUF(SlaveReregisteredMessage(), _, _);
Future<StatusUpdateMessage> statusUpdateMessage =
FUTURE_PROTOBUF(StatusUpdateMessage(), _, master.get());
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&status));
// Simulate a spurious master change event (e.g., due to ZooKeeper
// expiration) at the slave to force re-registration.
detector.appoint(master.get());
AWAIT_READY(slaveReregisteredMessage);
// Make sure the slave generated the TASK_LOST.
AWAIT_READY(statusUpdateMessage);
AWAIT_READY(status);
ASSERT_EQ(task.task_id(), status.get().task_id());
ASSERT_EQ(TASK_LOST, status.get().state());
// Before we obtain the metrics, ensure that the master has finished
// processing the status update so metrics have been updated.
Clock::pause();
Clock::settle();
Clock::resume();
// Check metrics.
JSON::Object stats = Metrics();
EXPECT_EQ(1u, stats.values.count("master/tasks_lost"));
EXPECT_EQ(1u, stats.values["master/tasks_lost"]);
EXPECT_EQ(
1u,
stats.values.count(
"master/task_lost/source_slave/reason_reconciliation"));
EXPECT_EQ(
1u,
stats.values["master/task_lost/source_slave/reason_reconciliation"]);
driver.stop();
driver.join();
Shutdown();
}
// This test verifies that status update manager ignores
// unexpected ACK for an earlier update when it is waiting
// for an ACK for another update. We do this by dropping ACKs
// for the original update and sending a random ACK to the slave.
TEST_F(StatusUpdateManagerTest, IgnoreUnexpectedStatusUpdateAck)
{
Try<PID<Master> > master = StartMaster();
ASSERT_SOME(master);
MockExecutor exec(DEFAULT_EXECUTOR_ID);
Try<PID<Slave> > slave = StartSlave(&exec);
ASSERT_SOME(slave);
FrameworkInfo frameworkInfo = DEFAULT_FRAMEWORK_INFO;
frameworkInfo.set_checkpoint(true); // Enable checkpointing.
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, frameworkInfo, master.get(), DEFAULT_CREDENTIAL);
FrameworkID frameworkId;
EXPECT_CALL(sched, registered(_, _, _))
.WillOnce(SaveArg<1>(&frameworkId));
Future<vector<Offer> > offers;
EXPECT_CALL(sched, resourceOffers(_, _))
.WillOnce(FutureArg<1>(&offers))
.WillRepeatedly(Return()); // Ignore subsequent offers.
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(_, _))
.WillOnce(FutureArg<1>(&status));
driver.start();
AWAIT_READY(offers);
EXPECT_NE(0u, offers.get().size());
ExecutorDriver* execDriver;
EXPECT_CALL(exec, registered(_, _, _, _))
.WillOnce(SaveArg<0>(&execDriver));
EXPECT_CALL(exec, launchTask(_, _))
.WillOnce(SendStatusUpdateFromTask(TASK_RUNNING));
Future<StatusUpdateMessage> statusUpdateMessage =
FUTURE_PROTOBUF(StatusUpdateMessage(), master.get(), _);
// Drop the ACKs, so that status update manager
// retries the update.
DROP_CALLS(mesos::scheduler::Call(),
mesos::scheduler::Call::ACKNOWLEDGE,
_,
master.get());
driver.launchTasks(offers.get()[0].id(), createTasks(offers.get()[0]));
AWAIT_READY(statusUpdateMessage);
StatusUpdate update = statusUpdateMessage.get().update();
AWAIT_READY(status);
EXPECT_EQ(TASK_RUNNING, status.get().state());
Future<Nothing> unexpectedAck =
FUTURE_DISPATCH(_, &Slave::_statusUpdateAcknowledgement);
// Now send an ACK with a random UUID.
process::dispatch(
slave.get(),
&Slave::statusUpdateAcknowledgement,
master.get(),
update.slave_id(),
frameworkId,
update.status().task_id(),
UUID::random().toBytes());
AWAIT_READY(unexpectedAck);
EXPECT_CALL(exec, shutdown(_))
.Times(AtMost(1));
driver.stop();
driver.join();
Shutdown();
}
// Test that memory pressure listening is restarted after recovery.
TEST_F(MemoryPressureMesosTest, CGROUPS_ROOT_SlaveRecovery)
{
Try<Owned<cluster::Master>> master = StartMaster();
ASSERT_SOME(master);
slave::Flags flags = CreateSlaveFlags();
// We only care about memory cgroup for this test.
flags.isolation = "cgroups/mem";
flags.agent_subsystems = None();
Fetcher fetcher;
Try<MesosContainerizer*> _containerizer =
MesosContainerizer::create(flags, true, &fetcher);
ASSERT_SOME(_containerizer);
Owned<MesosContainerizer> containerizer(_containerizer.get());
Owned<MasterDetector> detector = master.get()->createDetector();
Try<Owned<cluster::Slave>> slave =
StartSlave(detector.get(), containerizer.get(), flags);
ASSERT_SOME(slave);
MockScheduler sched;
// Enable checkpointing for the framework.
FrameworkInfo frameworkInfo = DEFAULT_FRAMEWORK_INFO;
frameworkInfo.set_checkpoint(true);
MesosSchedulerDriver driver(
&sched, frameworkInfo, master.get()->pid, DEFAULT_CREDENTIAL);
EXPECT_CALL(sched, registered(_, _, _));
Future<vector<Offer>> offers;
EXPECT_CALL(sched, resourceOffers(_, _))
.WillOnce(FutureArg<1>(&offers))
.WillRepeatedly(Return()); // Ignore subsequent offers.
driver.start();
AWAIT_READY(offers);
EXPECT_NE(0u, offers.get().size());
Offer offer = offers.get()[0];
// Run a task that triggers memory pressure event. We request 1G
// disk because we are going to write a 512 MB file repeatedly.
TaskInfo task = createTask(
offer.slave_id(),
Resources::parse("cpus:1;mem:256;disk:1024").get(),
"while true; do dd count=512 bs=1M if=/dev/zero of=./temp; done");
Future<TaskStatus> running;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&running));
Future<Nothing> _statusUpdateAcknowledgement =
FUTURE_DISPATCH(_, &Slave::_statusUpdateAcknowledgement);
driver.launchTasks(offers.get()[0].id(), {task});
AWAIT_READY(running);
EXPECT_EQ(task.task_id(), running.get().task_id());
EXPECT_EQ(TASK_RUNNING, running.get().state());
// Wait for the ACK to be checkpointed.
AWAIT_READY(_statusUpdateAcknowledgement);
// We restart the slave to let it recover.
slave.get()->terminate();
// Set up so we can wait until the new slave updates the container's
// resources (this occurs after the executor has re-registered).
Future<Nothing> update =
FUTURE_DISPATCH(_, &MesosContainerizerProcess::update);
// Use the same flags.
_containerizer = MesosContainerizer::create(flags, true, &fetcher);
ASSERT_SOME(_containerizer);
containerizer.reset(_containerizer.get());
Future<SlaveReregisteredMessage> reregistered =
FUTURE_PROTOBUF(SlaveReregisteredMessage(), master.get()->pid, _);
slave = StartSlave(detector.get(), containerizer.get(), flags);
ASSERT_SOME(slave);
AWAIT_READY(reregistered);
// Wait until the containerizer is updated.
AWAIT_READY(update);
Future<hashset<ContainerID>> containers = containerizer->containers();
AWAIT_READY(containers);
ASSERT_EQ(1u, containers.get().size());
ContainerID containerId = *(containers.get().begin());
// Wait a while for some memory pressure events to occur.
Duration waited = Duration::zero();
do {
Future<ResourceStatistics> usage = containerizer->usage(containerId);
AWAIT_READY(usage);
if (usage.get().mem_low_pressure_counter() > 0) {
// We will check the correctness of the memory pressure counters
// later, because the memory-hammering task is still active
// and potentially incrementing these counters.
break;
}
os::sleep(Milliseconds(100));
waited += Milliseconds(100);
} while (waited < Seconds(5));
EXPECT_LE(waited, Seconds(5));
// Pause the clock to ensure that the reaper doesn't reap the exited
// command executor and inform the containerizer/slave.
Clock::pause();
Clock::settle();
Future<TaskStatus> killed;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&killed));
// Stop the memory-hammering task.
driver.killTask(task.task_id());
AWAIT_READY(killed);
EXPECT_EQ(task.task_id(), killed->task_id());
EXPECT_EQ(TASK_KILLED, killed->state());
// Now check the correctness of the memory pressure counters.
Future<ResourceStatistics> usage = containerizer->usage(containerId);
AWAIT_READY(usage);
EXPECT_GE(usage.get().mem_low_pressure_counter(),
usage.get().mem_medium_pressure_counter());
EXPECT_GE(usage.get().mem_medium_pressure_counter(),
usage.get().mem_critical_pressure_counter());
Clock::resume();
driver.stop();
driver.join();
}
// Tests that the default container logger writes files into the sandbox.
TEST_F(ContainerLoggerTest, DefaultToSandbox)
{
// Create a master, agent, and framework.
Try<PID<Master>> master = StartMaster();
ASSERT_SOME(master);
Future<SlaveRegisteredMessage> slaveRegisteredMessage =
FUTURE_PROTOBUF(SlaveRegisteredMessage(), _, _);
// We'll need access to these flags later.
slave::Flags flags = CreateSlaveFlags();
Fetcher fetcher;
// We use an actual containerizer + executor since we want something to run.
Try<MesosContainerizer*> containerizer =
MesosContainerizer::create(flags, false, &fetcher);
CHECK_SOME(containerizer);
Try<PID<Slave>> slave = StartSlave(containerizer.get(), flags);
ASSERT_SOME(slave);
AWAIT_READY(slaveRegisteredMessage);
SlaveID slaveId = slaveRegisteredMessage.get().slave_id();
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, DEFAULT_FRAMEWORK_INFO, master.get(), DEFAULT_CREDENTIAL);
Future<FrameworkID> frameworkId;
EXPECT_CALL(sched, registered(&driver, _, _))
.WillOnce(FutureArg<1>(&frameworkId));
// Wait for an offer, and start a task.
Future<vector<Offer>> offers;
EXPECT_CALL(sched, resourceOffers(&driver, _))
.WillOnce(FutureArg<1>(&offers))
.WillRepeatedly(Return()); // Ignore subsequent offers.
driver.start();
AWAIT_READY(frameworkId);
AWAIT_READY(offers);
EXPECT_NE(0u, offers.get().size());
// We'll start a task that outputs to stdout.
TaskInfo task = createTask(offers.get()[0], "echo 'Hello World!'");
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&status))
.WillRepeatedly(Return()); // Ignore subsequent updates.
driver.launchTasks(offers.get()[0].id(), {task});
AWAIT_READY(status);
EXPECT_EQ(TASK_RUNNING, status.get().state());
// Check that the sandbox was written to.
string sandboxDirectory = path::join(
slave::paths::getExecutorPath(
flags.work_dir,
slaveId,
frameworkId.get(),
status->executor_id()),
"runs",
"latest");
ASSERT_TRUE(os::exists(sandboxDirectory));
string stdoutPath = path::join(sandboxDirectory, "stdout");
ASSERT_TRUE(os::exists(stdoutPath));
Result<string> stdout = os::read(stdoutPath);
ASSERT_SOME(stdout);
EXPECT_TRUE(strings::contains(stdout.get(), "Hello World!"));
driver.stop();
driver.join();
Shutdown();
}
// Test executor environment decorator hook and remove executor hook
// for slave. We expect the environment-decorator hook to create a
// temporary file and the remove-executor hook to delete that file.
TEST_F(HookTest, DISABLED_VerifySlaveLaunchExecutorHook)
{
master::Flags masterFlags = CreateMasterFlags();
Try<PID<Master>> master = StartMaster(masterFlags);
ASSERT_SOME(master);
slave::Flags slaveFlags = CreateSlaveFlags();
MockExecutor exec(DEFAULT_EXECUTOR_ID);
TestContainerizer containerizer(&exec);
Try<PID<Slave>> slave = StartSlave(&containerizer);
ASSERT_SOME(slave);
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, DEFAULT_FRAMEWORK_INFO, master.get(), 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);
EXPECT_NE(0u, offers.get().size());
// Launch a task with the command executor.
TaskInfo task;
task.set_name("");
task.mutable_task_id()->set_value("1");
task.mutable_slave_id()->CopyFrom(offers.get()[0].slave_id());
task.mutable_resources()->CopyFrom(offers.get()[0].resources());
task.mutable_executor()->CopyFrom(DEFAULT_EXECUTOR_INFO);
vector<TaskInfo> tasks;
tasks.push_back(task);
EXPECT_CALL(exec, launchTask(_, _));
Future<ExecutorInfo> executorInfo;
EXPECT_CALL(exec, registered(_, _, _, _))
.WillOnce(FutureArg<1>(&executorInfo));
// On successful completion of the "slaveLaunchExecutorHook", the
// test hook will send a HookExecuted message to itself. We wait
// until that message is intercepted by the testing infrastructure.
Future<HookExecuted> hookFuture = FUTURE_PROTOBUF(HookExecuted(), _, _);
driver.launchTasks(offers.get()[0].id(), tasks);
AWAIT_READY(executorInfo);
driver.stop();
driver.join();
Shutdown(); // Must shutdown before 'containerizer' gets deallocated.
// Now wait for the hook to finish execution.
AWAIT_READY(hookFuture);
}
// Test that the label decorator hook hangs a new label off the
// taskinfo message during master launch task.
TEST_F(HookTest, VerifyMasterLaunchTaskHook)
{
Try<PID<Master>> master = StartMaster(CreateMasterFlags());
ASSERT_SOME(master);
MockExecutor exec(DEFAULT_EXECUTOR_ID);
TestContainerizer containerizer(&exec);
// Start a mock slave since we aren't testing the slave hooks yet.
Try<PID<Slave>> slave = StartSlave(&containerizer);
ASSERT_SOME(slave);
MockScheduler sched;
MesosSchedulerDriver driver(
&sched, DEFAULT_FRAMEWORK_INFO, master.get(), 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);
EXPECT_NE(0u, offers.get().size());
TaskInfo task;
task.set_name("");
task.mutable_task_id()->set_value("1");
task.mutable_slave_id()->CopyFrom(offers.get()[0].slave_id());
task.mutable_resources()->CopyFrom(offers.get()[0].resources());
task.mutable_executor()->CopyFrom(DEFAULT_EXECUTOR_INFO);
// Add label which will be removed by the hook.
Labels* labels = task.mutable_labels();
Label* label = labels->add_labels();
label->set_key(testRemoveLabelKey);
label->set_value(testRemoveLabelValue);
vector<TaskInfo> tasks;
tasks.push_back(task);
Future<RunTaskMessage> runTaskMessage =
FUTURE_PROTOBUF(RunTaskMessage(), _, _);
EXPECT_CALL(exec, registered(_, _, _, _));
EXPECT_CALL(exec, launchTask(_, _))
.WillOnce(SendStatusUpdateFromTask(TASK_RUNNING));
Future<TaskStatus> status;
EXPECT_CALL(sched, statusUpdate(&driver, _))
.WillOnce(FutureArg<1>(&status))
.WillRepeatedly(Return());
driver.launchTasks(offers.get()[0].id(), tasks);
AWAIT_READY(runTaskMessage);
AWAIT_READY(status);
// At launchTasks, the label decorator hook inside should have been
// executed and we should see the labels now. Also, verify that the
// hook module has stripped the first 'testRemoveLabelKey' label.
// We do this by ensuring that only one label is present and that it
// is the new 'testLabelKey' label.
const Labels &labels_ = runTaskMessage.get().task().labels();
ASSERT_EQ(1, labels_.labels_size());
EXPECT_EQ(labels_.labels().Get(0).key(), testLabelKey);
EXPECT_EQ(labels_.labels().Get(0).value(), testLabelValue);
driver.stop();
driver.join();
Shutdown(); // Must shutdown before 'containerizer' gets deallocated.
}