//test that when a slave is lost we remove all offers
func TestSlave_Lost(t *testing.T) {
assert := assert.New(t)
//
testScheduler := &KubernetesScheduler{
offers: offers.CreateRegistry(offers.RegistryConfig{
Compat: func(o *mesos.Offer) bool {
return true
},
// remember expired offers so that we can tell if a previously scheduler offer relies on one
LingerTTL: schedcfg.DefaultOfferLingerTTL,
TTL: schedcfg.DefaultOfferTTL,
ListenerDelay: schedcfg.DefaultListenerDelay,
}),
slaveHostNames: slave.NewRegistry(),
}
hostname := "h1"
offer1 := &mesos.Offer{Id: util.NewOfferID("test1"), Hostname: &hostname, SlaveId: util.NewSlaveID(hostname)}
offers1 := []*mesos.Offer{offer1}
testScheduler.ResourceOffers(nil, offers1)
offer2 := &mesos.Offer{Id: util.NewOfferID("test2"), Hostname: &hostname, SlaveId: util.NewSlaveID(hostname)}
offers2 := []*mesos.Offer{offer2}
testScheduler.ResourceOffers(nil, offers2)
//add another offer from different slaveID
hostname2 := "h2"
offer3 := &mesos.Offer{Id: util.NewOfferID("test3"), Hostname: &hostname2, SlaveId: util.NewSlaveID(hostname2)}
offers3 := []*mesos.Offer{offer3}
testScheduler.ResourceOffers(nil, offers3)
//test precondition
assert.Equal(3, getNumberOffers(testScheduler.offers))
assert.Equal(2, len(testScheduler.slaveHostNames.SlaveIDs()))
//remove first slave
testScheduler.SlaveLost(nil, util.NewSlaveID(hostname))
//offers should be removed
assert.Equal(1, getNumberOffers(testScheduler.offers))
//slave hostnames should still be all present
assert.Equal(2, len(testScheduler.slaveHostNames.SlaveIDs()))
//remove second slave
testScheduler.SlaveLost(nil, util.NewSlaveID(hostname2))
//offers should be removed
assert.Equal(0, getNumberOffers(testScheduler.offers))
//slave hostnames should still be all present
assert.Equal(2, len(testScheduler.slaveHostNames.SlaveIDs()))
//try to remove non existing slave
testScheduler.SlaveLost(nil, util.NewSlaveID("notExist"))
}
//test adding of ressource offer, should be added to offer registry and slavesf
func TestResourceOffer_Add_Rescind(t *testing.T) {
assert := assert.New(t)
testScheduler := &KubernetesScheduler{
offers: offers.CreateRegistry(offers.RegistryConfig{
Compat: func(o *mesos.Offer) bool {
return true
},
DeclineOffer: func(offerId string) <-chan error {
return proc.ErrorChan(nil)
},
// remember expired offers so that we can tell if a previously scheduler offer relies on one
LingerTTL: schedcfg.DefaultOfferLingerTTL,
TTL: schedcfg.DefaultOfferTTL,
ListenerDelay: schedcfg.DefaultListenerDelay,
}),
slaveHostNames: slave.NewRegistry(),
}
hostname := "h1"
offerID1 := util.NewOfferID("test1")
offer1 := &mesos.Offer{Id: offerID1, Hostname: &hostname, SlaveId: util.NewSlaveID(hostname)}
offers1 := []*mesos.Offer{offer1}
testScheduler.ResourceOffers(nil, offers1)
assert.Equal(1, getNumberOffers(testScheduler.offers))
//check slave hostname
assert.Equal(1, len(testScheduler.slaveHostNames.SlaveIDs()))
//add another offer
hostname2 := "h2"
offer2 := &mesos.Offer{Id: util.NewOfferID("test2"), Hostname: &hostname2, SlaveId: util.NewSlaveID(hostname2)}
offers2 := []*mesos.Offer{offer2}
testScheduler.ResourceOffers(nil, offers2)
assert.Equal(2, getNumberOffers(testScheduler.offers))
//check slave hostnames
assert.Equal(2, len(testScheduler.slaveHostNames.SlaveIDs()))
//next whether offers can be rescinded
testScheduler.OfferRescinded(nil, offerID1)
assert.Equal(1, getNumberOffers(testScheduler.offers))
//next whether offers can be rescinded
testScheduler.OfferRescinded(nil, util.NewOfferID("test2"))
//walk offers again and check it is removed from registry
assert.Equal(0, getNumberOffers(testScheduler.offers))
//remove non existing ID
testScheduler.OfferRescinded(nil, util.NewOfferID("notExist"))
}
// New creates a new KubernetesScheduler
func New(config Config) *KubernetesScheduler {
var k *KubernetesScheduler
k = &KubernetesScheduler{
schedcfg: &config.Schedcfg,
RWMutex: new(sync.RWMutex),
executor: config.Executor,
executorGroup: uid.Parse(config.Executor.ExecutorId.GetValue()).Group(),
PodScheduler: config.Scheduler,
client: config.Client,
etcdClient: config.EtcdClient,
failoverTimeout: config.FailoverTimeout,
reconcileInterval: config.ReconcileInterval,
offers: offers.CreateRegistry(offers.RegistryConfig{
Compat: func(o *mesos.Offer) bool {
// filter the offers: the executor IDs must not identify a kubelet-
// executor with a group that doesn't match ours
for _, eid := range o.GetExecutorIds() {
execuid := uid.Parse(eid.GetValue())
if execuid.Name() == execcfg.DefaultInfoID && execuid.Group() != k.executorGroup {
return false
}
}
return true
},
DeclineOffer: func(id string) <-chan error {
errOnce := proc.NewErrorOnce(k.terminate)
errOuter := k.asRegisteredMaster.Do(func() {
var err error
defer errOnce.Report(err)
offerId := mutil.NewOfferID(id)
filters := &mesos.Filters{}
_, err = k.driver.DeclineOffer(offerId, filters)
})
return errOnce.Send(errOuter).Err()
},
// remember expired offers so that we can tell if a previously scheduler offer relies on one
LingerTTL: config.Schedcfg.OfferLingerTTL.Duration,
TTL: config.Schedcfg.OfferTTL.Duration,
ListenerDelay: config.Schedcfg.ListenerDelay.Duration,
}),
slaveHostNames: slave.NewRegistry(),
taskRegistry: podtask.NewInMemoryRegistry(),
reconcileCooldown: config.ReconcileCooldown,
registration: make(chan struct{}),
asRegisteredMaster: proc.DoerFunc(func(proc.Action) <-chan error {
return proc.ErrorChanf("cannot execute action with unregistered scheduler")
}),
}
return k
}
//test we can handle different status updates, TODO check state transitions
func TestStatus_Update(t *testing.T) {
mockdriver := MockSchedulerDriver{}
// setup expectations
mockdriver.On("KillTask", util.NewTaskID("test-task-001")).Return(mesos.Status_DRIVER_RUNNING, nil)
testScheduler := &KubernetesScheduler{
offers: offers.CreateRegistry(offers.RegistryConfig{
Compat: func(o *mesos.Offer) bool {
return true
},
// remember expired offers so that we can tell if a previously scheduler offer relies on one
LingerTTL: schedcfg.DefaultOfferLingerTTL,
TTL: schedcfg.DefaultOfferTTL,
ListenerDelay: schedcfg.DefaultListenerDelay,
}),
slaveHostNames: slave.NewRegistry(),
driver: &mockdriver,
taskRegistry: podtask.NewInMemoryRegistry(),
}
taskStatus_task_starting := util.NewTaskStatus(
util.NewTaskID("test-task-001"),
mesos.TaskState_TASK_RUNNING,
)
testScheduler.StatusUpdate(testScheduler.driver, taskStatus_task_starting)
taskStatus_task_running := util.NewTaskStatus(
util.NewTaskID("test-task-001"),
mesos.TaskState_TASK_RUNNING,
)
testScheduler.StatusUpdate(testScheduler.driver, taskStatus_task_running)
taskStatus_task_failed := util.NewTaskStatus(
util.NewTaskID("test-task-001"),
mesos.TaskState_TASK_FAILED,
)
testScheduler.StatusUpdate(testScheduler.driver, taskStatus_task_failed)
//assert that mock was invoked
mockdriver.AssertExpectations(t)
}