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Split binder, deleter, podScheduler initialion from NewSchedulerLoop

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This commit is contained in:
Dr. Stefan Schimanski
2015-10-28 12:54:21 -05:00
parent 5f070c11a7
commit ae4673e86e
4 changed files with 35 additions and 37 deletions
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5
contrib/mesos/pkg/scheduler/integration_test.go
View File

@@ -427,6 +427,7 @@ type lifecycleTest struct {
driver *mmock.JoinableDriver
eventObs *EventObserver
loop operations.SchedulerLoopInterface
podReconciler *operations.PodReconciler
podsListWatch *MockPodsListWatch
scheduler *MesosScheduler
schedulerProc *ha.SchedulerProcess
@@ -485,7 +486,7 @@ func newLifecycleTest(t *testing.T) lifecycleTest {
// create scheduler loop
fw := &MesosFramework{MesosScheduler: mesosScheduler}
eventObs := NewEventObserver()
loop := operations.NewSchedulerLoop(&c, fw, client, eventObs, schedulerProc.Terminal(), http.DefaultServeMux, &podsListWatch.ListWatch)
loop, _ := operations.NewScheduler(&c, fw, client, eventObs, schedulerProc.Terminal(), http.DefaultServeMux, &podsListWatch.ListWatch)
assert.NotNil(loop)
// create mock mesos scheduler driver
@@ -510,7 +511,7 @@ func (lt lifecycleTest) Start() <-chan LaunchedTask {
// init scheduler
err := lt.scheduler.Init(
lt.schedulerProc.Master(),
lt.loop,
lt.podReconciler,
http.DefaultServeMux,
)
assert.NoError(err)

33
contrib/mesos/pkg/scheduler/operations/schedulerloop.go
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@@ -42,9 +42,6 @@ const (
)
type SchedulerLoopInterface interface {
ReconcilePodTask(t *podtask.T)
// execute the Scheduling plugin, should start a go routine and return immediately
Run(<-chan struct{})
}
@@ -55,12 +52,11 @@ type SchedulerLoop struct {
error func(*api.Pod, error)
recorder record.EventRecorder
client *client.Client
pr *PodReconciler
starting chan struct{} // startup latch
started chan<- struct{} // startup latch
}
func NewSchedulerLoop(c *config.Config, fw types.Framework, client *client.Client, recorder record.EventRecorder,
terminate <-chan struct{}, mux *http.ServeMux, podsWatcher *cache.ListWatch) *SchedulerLoop {
func NewScheduler(c *config.Config, fw types.Framework, client *client.Client, recorder record.EventRecorder,
terminate <-chan struct{}, mux *http.ServeMux, podsWatcher *cache.ListWatch) (SchedulerLoopInterface, *PodReconciler) {
// Watch and queue pods that need scheduling.
updates := make(chan queue.Entry, c.UpdatesBacklog)
@@ -74,10 +70,10 @@ func NewSchedulerLoop(c *config.Config, fw types.Framework, client *client.Clien
q := queuer.New(podUpdates)
podDeleter := NewDeleter(fw, q)
podReconciler := NewPodReconciler(fw, client, q, podDeleter)
bo := backoff.New(c.InitialPodBackoff.Duration, c.MaxPodBackoff.Duration)
eh := NewErrorHandler(fw, bo, q)
startLatch := make(chan struct{})
eventBroadcaster := record.NewBroadcaster()
runtime.On(startLatch, func() {
eventBroadcaster.StartRecordingToSink(client.Events(""))
reflector.Run() // TODO(jdef) should listen for termination
@@ -87,20 +83,27 @@ func NewSchedulerLoop(c *config.Config, fw types.Framework, client *client.Clien
q.InstallDebugHandlers(mux)
podtask.InstallDebugHandlers(fw.Tasks(), mux)
})
return NewSchedulerLoop(c, fw, client, recorder, podUpdates, q, startLatch), podReconciler
}
func NewSchedulerLoop(c *config.Config, fw types.Framework, client *client.Client,
recorder record.EventRecorder, podUpdates queue.FIFO, q *queuer.Queuer,
started chan<- struct{}) *SchedulerLoop {
bo := backoff.New(c.InitialPodBackoff.Duration, c.MaxPodBackoff.Duration)
return &SchedulerLoop{
algorithm: NewSchedulerAlgorithm(fw, podUpdates),
binder: NewBinder(fw),
nextPod: q.Yield,
error: eh.Error,
error: NewErrorHandler(fw, bo, q).Error,
recorder: recorder,
client: client,
pr: podReconciler,
starting: startLatch,
started: started,
}
}
func (s *SchedulerLoop) Run(done <-chan struct{}) {
defer close(s.starting)
defer close(s.started)
go runtime.Until(s.scheduleOne, recoveryDelay, done)
}
@@ -141,7 +144,3 @@ func (s *SchedulerLoop) scheduleOne() {
}
s.recorder.Eventf(pod, Scheduled, "Successfully assigned %v to %v", pod.Name, dest)
}
func (s *SchedulerLoop) ReconcilePodTask(t *podtask.T) {
s.pr.Reconcile(t)
}

30
contrib/mesos/pkg/scheduler/scheduler.go
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@@ -56,8 +56,7 @@ import (
// KubernetesScheduler implements:
// 1: A mesos scheduler.
// 2: A kubernetes scheduler plugin.
// 3: A kubernetes pod.Registry.
// 2: A kubernetes pod.Registry.
type MesosScheduler struct {
// We use a lock here to avoid races
// between invoking the mesos callback
@@ -93,9 +92,8 @@ type MesosScheduler struct {
taskRegistry podtask.Registry
// via deferred init
loop operations.SchedulerLoopInterface
reconciler *operations.TasksReconciler
podReconciler *operations.PodReconciler
tasksReconciler *operations.TasksReconciler
reconcileCooldown time.Duration
asRegisteredMaster proc.Doer
terminate <-chan struct{} // signal chan, closes when we should kill background tasks
@@ -172,7 +170,7 @@ func New(config Config) *MesosScheduler {
return k
}
func (k *MesosScheduler) Init(electedMaster proc.Process, sl operations.SchedulerLoopInterface, mux *http.ServeMux) error {
func (k *MesosScheduler) Init(electedMaster proc.Process, pr *operations.PodReconciler, mux *http.ServeMux) error {
log.V(1).Infoln("initializing kubernetes mesos scheduler")
k.asRegisteredMaster = proc.DoerFunc(func(a proc.Action) <-chan error {
@@ -182,7 +180,7 @@ func (k *MesosScheduler) Init(electedMaster proc.Process, sl operations.Schedule
return electedMaster.Do(a)
})
k.terminate = electedMaster.Done()
k.loop = sl
k.podReconciler = pr
k.offers.Init(k.terminate)
k.InstallDebugHandlers(mux)
k.nodeRegistrator.Run(k.terminate)
@@ -223,8 +221,8 @@ func (k *MesosScheduler) InstallDebugHandlers(mux *http.ServeMux) {
w.WriteHeader(http.StatusNoContent)
}))
}
requestReconciliation("/debug/actions/requestExplicit", k.reconciler.RequestExplicit)
requestReconciliation("/debug/actions/requestImplicit", k.reconciler.RequestImplicit)
requestReconciliation("/debug/actions/requestExplicit", k.tasksReconciler.RequestExplicit)
requestReconciliation("/debug/actions/requestImplicit", k.tasksReconciler.RequestImplicit)
wrappedHandler("/debug/actions/kamikaze", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
slaves := k.slaveHostNames.SlaveIDs()
@@ -257,7 +255,7 @@ func (k *MesosScheduler) Registered(drv bindings.SchedulerDriver, fid *mesos.Fra
k.registered = true
k.onRegistration.Do(func() { k.onInitialRegistration(drv) })
k.reconciler.RequestExplicit()
k.tasksReconciler.RequestExplicit()
}
// Reregistered is called when the scheduler re-registered with the master successfully.
@@ -270,7 +268,7 @@ func (k *MesosScheduler) Reregistered(drv bindings.SchedulerDriver, mi *mesos.Ma
k.registered = true
k.onRegistration.Do(func() { k.onInitialRegistration(drv) })
k.reconciler.RequestExplicit()
k.tasksReconciler.RequestExplicit()
}
// perform one-time initialization actions upon the first registration event received from Mesos.
@@ -290,13 +288,13 @@ func (k *MesosScheduler) onInitialRegistration(driver bindings.SchedulerDriver)
r1 := k.makeTaskRegistryReconciler()
r2 := k.makePodRegistryReconciler()
k.reconciler = operations.NewTasksReconciler(k.asRegisteredMaster, k.makeCompositeReconciler(r1, r2),
k.tasksReconciler = operations.NewTasksReconciler(k.asRegisteredMaster, k.makeCompositeReconciler(r1, r2),
k.reconcileCooldown, k.schedulerConfig.ExplicitReconciliationAbortTimeout.Duration, k.terminate)
go k.reconciler.Run(driver)
go k.tasksReconciler.Run(driver)
if k.reconcileInterval > 0 {
ri := time.Duration(k.reconcileInterval) * time.Second
time.AfterFunc(k.schedulerConfig.InitialImplicitReconciliationDelay.Duration, func() { runtime.Until(k.reconciler.RequestImplicit, ri, k.terminate) })
time.AfterFunc(k.schedulerConfig.InitialImplicitReconciliationDelay.Duration, func() { runtime.Until(k.tasksReconciler.RequestImplicit, ri, k.terminate) })
log.Infof("will perform implicit task reconciliation at interval: %v after %v", ri, k.schedulerConfig.InitialImplicitReconciliationDelay.Duration)
}
}
@@ -392,7 +390,7 @@ func (k *MesosScheduler) StatusUpdate(driver bindings.SchedulerDriver, taskStatu
case mesos.TaskState_TASK_FAILED, mesos.TaskState_TASK_ERROR:
if task, _ := k.taskRegistry.UpdateStatus(taskStatus); task != nil {
if task.Has(podtask.Launched) && !task.Has(podtask.Bound) {
go k.loop.ReconcilePodTask(task)
go k.podReconciler.Reconcile(task)
return
}
} else {
@@ -440,7 +438,7 @@ func (k *MesosScheduler) reconcileTerminalTask(driver bindings.SchedulerDriver,
} else if taskStatus.GetReason() == mesos.TaskStatus_REASON_EXECUTOR_TERMINATED || taskStatus.GetReason() == mesos.TaskStatus_REASON_EXECUTOR_UNREGISTERED {
// attempt to prevent dangling pods in the pod and task registries
log.V(1).Infof("request explicit reconciliation to clean up for task %v after executor reported (terminated/unregistered)", taskStatus.TaskId.GetValue())
k.reconciler.RequestExplicit()
k.tasksReconciler.RequestExplicit()
} else if taskStatus.GetState() == mesos.TaskState_TASK_LOST && state == podtask.StateRunning && taskStatus.ExecutorId != nil && taskStatus.SlaveId != nil {
//TODO(jdef) this may not be meaningful once we have proper checkpointing and master detection
//If we're reconciling and receive this then the executor may be

4
contrib/mesos/pkg/scheduler/service/service.go
View File

@@ -765,14 +765,14 @@ func (s *SchedulerServer) bootstrap(hks hyperkube.Interface, sc *schedcfg.Config
eventBroadcaster := record.NewBroadcaster()
recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduler"})
lw := cache.NewListWatchFromClient(client, "pods", api.NamespaceAll, fields.Everything())
loop := operations.NewSchedulerLoop(sc, fw, client, recorder, schedulerProcess.Terminal(), s.mux, lw)
loop, pr := operations.NewScheduler(sc, fw, client, recorder, schedulerProcess.Terminal(), s.mux, lw)
runtime.On(mesosScheduler.Registration(), func() { loop.Run(schedulerProcess.Terminal()) })
runtime.On(mesosScheduler.Registration(), s.newServiceWriter(schedulerProcess.Terminal()))
driverFactory := ha.DriverFactory(func() (drv bindings.SchedulerDriver, err error) {
log.V(1).Infoln("performing deferred initialization")
if err = mesosScheduler.Init(schedulerProcess.Master(), loop, s.mux); err != nil {
if err = mesosScheduler.Init(schedulerProcess.Master(), pr, s.mux); err != nil {
return nil, fmt.Errorf("failed to initialize pod scheduler: %v", err)
}
log.V(1).Infoln("deferred init complete")