func newQueuer(store queue.FIFO) *queuer {
q := &queuer{
podQueue: queue.NewDelayFIFO(),
podUpdates: store,
}
q.deltaCond.L = &q.lock
q.unscheduledCond.L = &q.lock
return q
}
func New(c *config.Config, fw framework.Framework, ps podschedulers.PodScheduler,
client *client.Client, recorder record.EventRecorder, terminate <-chan struct{}, mux *http.ServeMux, lw *cache.ListWatch) scheduler.Scheduler {
core := &sched{
framework: fw,
taskRegistry: podtask.NewInMemoryRegistry(),
}
// Watch and queue pods that need scheduling.
podUpdatesBypass := make(chan queue.Entry, c.UpdatesBacklog)
podUpdates := &podStoreAdapter{queue.NewHistorical(podUpdatesBypass)}
reflector := cache.NewReflector(lw, &api.Pod{}, podUpdates, 0)
q := queuer.New(queue.NewDelayFIFO(), podUpdates)
algorithm := algorithm.New(core, podUpdates, ps)
podDeleter := deleter.New(core, q)
core.podReconciler = podreconciler.New(core, client, q, podDeleter)
bo := backoff.New(c.InitialPodBackoff.Duration, c.MaxPodBackoff.Duration)
newBC := func(podKey string) queue.BreakChan {
return queue.BreakChan(core.Offers().Listen(podKey, func(offer *mesos.Offer) bool {
core.Lock()
defer core.Unlock()
switch task, state := core.Tasks().ForPod(podKey); state {
case podtask.StatePending:
// Assess fitness of pod with the current offer. The scheduler normally
// "backs off" when it can't find an offer that matches up with a pod.
// The backoff period for a pod can terminate sooner if an offer becomes
// available that matches up.
return !task.Has(podtask.Launched) && ps.FitPredicate()(task, offer, nil)
default:
// no point in continuing to check for matching offers
return true
}
}))
}
errorHandler := errorhandler.New(core, bo, q, newBC)
binder := binder.New(core)
startLatch := make(chan struct{})
runtime.On(startLatch, func() {
reflector.Run() // TODO(jdef) should listen for termination
podDeleter.Run(podUpdatesBypass, terminate)
q.Run(terminate)
q.InstallDebugHandlers(mux)
podtask.InstallDebugHandlers(core.Tasks(), mux)
})
core.controller = controller.New(client, algorithm, recorder, q.Yield, errorHandler.Error, binder, startLatch)
return core
}
func TestDeleteOne_Running(t *testing.T) {
assert := assert.New(t)
obj := &types.MockScheduler{}
reg := podtask.NewInMemoryRegistry()
obj.On("Tasks").Return(reg)
pod := &queuer.Pod{Pod: &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "foo",
UID: "foo0",
Namespace: api.NamespaceDefault,
}}}
task, err := podtask.New(
api.NewDefaultContext(),
podtask.Config{
ID: "bar",
Prototype: &mesosproto.ExecutorInfo{},
HostPortStrategy: hostport.StrategyWildcard,
},
pod.Pod,
)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
task, err = reg.Register(task)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
task.Set(podtask.Launched)
err = reg.Update(task)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
// preconditions
q := queue.NewDelayFIFO()
qr := queuer.New(q, nil)
q.Add(pod, queue.ReplaceExisting)
assert.Equal(1, len(q.List()))
_, found := q.Get("default/foo")
assert.True(found)
obj.On("KillTask", task.ID).Return(nil)
// exec & post conditions
d := New(obj, qr)
err = d.DeleteOne(pod)
assert.Nil(err)
_, found = q.Get("foo0")
assert.False(found)
assert.Equal(0, len(q.List()))
obj.AssertExpectations(t)
}
func CreateRegistry(c RegistryConfig) Registry {
metrics.Register()
return &offerStorage{
RegistryConfig: c,
offers: cache.NewFIFO(cache.KeyFunc(func(v interface{}) (string, error) {
if perishable, ok := v.(Perishable); !ok {
return "", fmt.Errorf("expected perishable offer, not '%+v'", v)
} else {
return perishable.Id(), nil
}
})),
listeners: queue.NewDelayFIFO(),
delayed: queue.NewDelayQueue(),
slaves: newSlaveStorage(),
}
}
func TestDeleteOne_PendingPod(t *testing.T) {
assert := assert.New(t)
obj := &types.MockScheduler{}
reg := podtask.NewInMemoryRegistry()
obj.On("Tasks").Return(reg)
pod := &queuer.Pod{Pod: &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "foo",
UID: "foo0",
Namespace: api.NamespaceDefault,
}}}
task, err := podtask.New(
api.NewDefaultContext(),
"bar",
pod.Pod,
&mesosproto.ExecutorInfo{},
nil,
nil,
)
if err != nil {
t.Fatalf("failed to create task: %v", err)
}
_, err = reg.Register(task)
if err != nil {
t.Fatalf("failed to register task: %v", err)
}
// preconditions
q := queue.NewDelayFIFO()
qr := queuer.New(q, nil)
q.Add(pod, queue.ReplaceExisting)
assert.Equal(1, len(q.List()))
_, found := q.Get("default/foo")
assert.True(found)
// exec & post conditions
d := New(obj, qr)
err = d.DeleteOne(pod)
assert.Nil(err)
_, found = q.Get("foo0")
assert.False(found)
assert.Equal(0, len(q.List()))
obj.AssertExpectations(t)
}
func TestDeleteOne_NonexistentPod(t *testing.T) {
assert := assert.New(t)
obj := &types.MockScheduler{}
reg := podtask.NewInMemoryRegistry()
obj.On("Tasks").Return(reg)
q := queue.NewDelayFIFO()
qr := queuer.New(q, nil)
assert.Equal(0, len(q.List()))
d := New(obj, qr)
pod := &queuer.Pod{Pod: &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: api.NamespaceDefault,
}}}
err := d.DeleteOne(pod)
assert.Equal(err, errors.NoSuchPodErr)
obj.AssertExpectations(t)
}
func TestDeleteOne_badPodNaming(t *testing.T) {
assert := assert.New(t)
obj := &types.MockScheduler{}
pod := &queuer.Pod{Pod: &api.Pod{}}
q := queue.NewDelayFIFO()
qr := queuer.New(q, nil)
d := New(obj, qr)
err := d.DeleteOne(pod)
assert.NotNil(err)
pod.Pod.ObjectMeta.Name = "foo"
err = d.DeleteOne(pod)
assert.NotNil(err)
pod.Pod.ObjectMeta.Name = ""
pod.Pod.ObjectMeta.Namespace = "bar"
err = d.DeleteOne(pod)
assert.NotNil(err)
obj.AssertExpectations(t)
}