func TestDefaultErrorFunc(t *testing.T) {
grace := int64(30)
testPod := &api.Pod{
ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar"},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
TerminationGracePeriodSeconds: &grace,
},
}
handler := util.FakeHandler{
StatusCode: 200,
ResponseBody: runtime.EncodeOrDie(testapi.Default.Codec(), testPod),
T: t,
}
mux := http.NewServeMux()
// FakeHandler musn't be sent requests other than the one you want to test.
mux.Handle(testapi.Default.ResourcePath("pods", "bar", "foo"), &handler)
server := httptest.NewServer(mux)
defer server.Close()
factory := NewConfigFactory(client.NewOrDie(&client.Config{Host: server.URL, Version: testapi.Default.Version()}), nil)
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
podBackoff := podBackoff{
perPodBackoff: map[types.NamespacedName]*backoffEntry{},
clock: &fakeClock{},
defaultDuration: 1 * time.Millisecond,
maxDuration: 1 * time.Second,
}
errFunc := factory.makeDefaultErrorFunc(&podBackoff, queue)
errFunc(testPod, nil)
for {
// This is a terrible way to do this but I plan on replacing this
// whole error handling system in the future. The test will time
// out if something doesn't work.
time.Sleep(10 * time.Millisecond)
got, exists, _ := queue.Get(testPod)
if !exists {
continue
}
handler.ValidateRequest(t, testapi.Default.ResourcePath("pods", "bar", "foo"), "GET", nil)
if e, a := testPod, got; !reflect.DeepEqual(e, a) {
t.Errorf("Expected %v, got %v", e, a)
}
break
}
}
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 TestSchedulerRateLimitsBinding(t *testing.T) {
scheduledPodStore := cache.NewStore(cache.MetaNamespaceKeyFunc)
scheduledPodLister := &cache.StoreToPodLister{Store: scheduledPodStore}
queuedPodStore := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
queuedPodLister := &cache.StoreToPodLister{Store: queuedPodStore}
modeler := NewSimpleModeler(queuedPodLister, scheduledPodLister)
algo := NewGenericScheduler(
map[string]algorithm.FitPredicate{},
[]algorithm.PriorityConfig{},
modeler.PodLister(),
rand.New(rand.NewSource(time.Now().UnixNano())))
// Rate limit to 1 pod
fr := FakeRateLimiter{util.NewTokenBucketRateLimiter(0.02, 1), []bool{}}
c := &Config{
Modeler: modeler,
NodeLister: algorithm.FakeNodeLister(
api.NodeList{Items: []api.Node{{ObjectMeta: api.ObjectMeta{Name: "machine1"}}}},
),
Algorithm: algo,
Binder: fakeBinder{func(b *api.Binding) error {
return nil
}},
NextPod: func() *api.Pod {
return queuedPodStore.Pop().(*api.Pod)
},
Error: func(p *api.Pod, err error) {
t.Errorf("Unexpected error when scheduling pod %+v: %v", p, err)
},
Recorder: &record.FakeRecorder{},
BindPodsRateLimiter: &fr,
}
s := New(c)
firstPod := podWithID("foo", "")
secondPod := podWithID("boo", "")
queuedPodStore.Add(firstPod)
queuedPodStore.Add(secondPod)
for i, hitRateLimit := range []bool{true, false} {
s.scheduleOne()
if fr.acceptValues[i] != hitRateLimit {
t.Errorf("Unexpected rate limiting, expect rate limit to be: %v but found it was %v", hitRateLimit, fr.acceptValues[i])
}
}
}
// Initializes the factory.
func NewConfigFactory(client *client.Client, rateLimiter util.RateLimiter) *ConfigFactory {
c := &ConfigFactory{
Client: client,
PodQueue: cache.NewFIFO(cache.MetaNamespaceKeyFunc),
ScheduledPodLister: &cache.StoreToPodLister{},
// Only nodes in the "Ready" condition with status == "True" are schedulable
NodeLister: &cache.StoreToNodeLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
ServiceLister: &cache.StoreToServiceLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
ControllerLister: &cache.StoreToReplicationControllerLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
StopEverything: make(chan struct{}),
}
modeler := scheduler.NewSimpleModeler(&cache.StoreToPodLister{Store: c.PodQueue}, c.ScheduledPodLister)
c.modeler = modeler
c.PodLister = modeler.PodLister()
c.BindPodsRateLimiter = rateLimiter
// On add/delete to the scheduled pods, remove from the assumed pods.
// We construct this here instead of in CreateFromKeys because
// ScheduledPodLister is something we provide to plug in functions that
// they may need to call.
c.ScheduledPodLister.Store, c.scheduledPodPopulator = framework.NewInformer(
c.createAssignedPodLW(),
&api.Pod{},
0,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
if pod, ok := obj.(*api.Pod); ok {
c.modeler.LockedAction(func() {
c.modeler.ForgetPod(pod)
})
}
},
DeleteFunc: func(obj interface{}) {
c.modeler.LockedAction(func() {
switch t := obj.(type) {
case *api.Pod:
c.modeler.ForgetPod(t)
case cache.DeletedFinalStateUnknown:
c.modeler.ForgetPodByKey(t.Key)
}
})
},
},
)
return c
}
// WatchPod returns a ListWatch for watching a pod. The stopChannel is used
// to close the reflector backing the watch. The caller is responsible for derring a close on the channel to
// stop the reflector.
func (c *realRecyclerClient) WatchPod(name, namespace, resourceVersion string, stopChannel chan struct{}) func() *api.Pod {
fieldSelector, _ := fields.ParseSelector("metadata.name=" + name)
podLW := &cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return c.client.Pods(namespace).List(labels.Everything(), fieldSelector)
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return c.client.Pods(namespace).Watch(labels.Everything(), fieldSelector, resourceVersion)
},
}
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(podLW, &api.Pod{}, queue, 1*time.Minute).RunUntil(stopChannel)
return func() *api.Pod {
obj := queue.Pop()
return obj.(*api.Pod)
}
}
func TestSchedulerForgetAssumedPodAfterDelete(t *testing.T) {
eventBroadcaster := record.NewBroadcaster()
defer eventBroadcaster.StartLogging(t.Logf).Stop()
// Setup modeler so we control the contents of all 3 stores: assumed,
// scheduled and queued
scheduledPodStore := cache.NewStore(cache.MetaNamespaceKeyFunc)
scheduledPodLister := &cache.StoreToPodLister{Store: scheduledPodStore}
queuedPodStore := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
queuedPodLister := &cache.StoreToPodLister{Store: queuedPodStore}
modeler := NewSimpleModeler(queuedPodLister, scheduledPodLister)
// Create a fake clock used to timestamp entries and calculate ttl. Nothing
// will expire till we flip to something older than the ttl, at which point
// all entries inserted with fakeTime will expire.
ttl := 30 * time.Second
fakeTime := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
fakeClock := &util.FakeClock{Time: fakeTime}
ttlPolicy := &cache.TTLPolicy{Ttl: ttl, Clock: fakeClock}
assumedPodsStore := cache.NewFakeExpirationStore(
cache.MetaNamespaceKeyFunc, nil, ttlPolicy, fakeClock)
modeler.assumedPods = &cache.StoreToPodLister{Store: assumedPodsStore}
// Port is the easiest way to cause a fit predicate failure
podPort := 8080
firstPod := podWithPort("foo", "", podPort)
// Create the scheduler config
algo := NewGenericScheduler(
map[string]algorithm.FitPredicate{"PodFitsHostPorts": predicates.PodFitsHostPorts},
[]algorithm.PriorityConfig{},
modeler.PodLister(),
rand.New(rand.NewSource(time.Now().UnixNano())))
var gotBinding *api.Binding
c := &Config{
Modeler: modeler,
NodeLister: algorithm.FakeNodeLister(
api.NodeList{Items: []api.Node{{ObjectMeta: api.ObjectMeta{Name: "machine1"}}}},
),
Algorithm: algo,
Binder: fakeBinder{func(b *api.Binding) error {
scheduledPodStore.Add(podWithPort(b.Name, b.Target.Name, podPort))
gotBinding = b
return nil
}},
NextPod: func() *api.Pod {
return queuedPodStore.Pop().(*api.Pod)
},
Error: func(p *api.Pod, err error) {
t.Errorf("Unexpected error when scheduling pod %+v: %v", p, err)
},
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduler"}),
}
// First scheduling pass should schedule the pod
s := New(c)
called := make(chan struct{})
events := eventBroadcaster.StartEventWatcher(func(e *api.Event) {
if e, a := "Scheduled", e.Reason; e != a {
t.Errorf("expected %v, got %v", e, a)
}
close(called)
})
queuedPodStore.Add(firstPod)
// queuedPodStore: [foo:8080]
// scheduledPodStore: []
// assumedPods: []
s.scheduleOne()
// queuedPodStore: []
// scheduledPodStore: [foo:8080]
// assumedPods: [foo:8080]
pod, exists, _ := scheduledPodStore.GetByKey("foo")
if !exists {
t.Errorf("Expected scheduled pod store to contain pod")
}
pod, exists, _ = queuedPodStore.GetByKey("foo")
if exists {
t.Errorf("Did not expect a queued pod, found %+v", pod)
}
pod, exists, _ = assumedPodsStore.GetByKey("foo")
if !exists {
t.Errorf("Assumed pod store should contain stale pod")
}
expectBind := &api.Binding{
ObjectMeta: api.ObjectMeta{Name: "foo"},
Target: api.ObjectReference{Kind: "Node", Name: "machine1"},
}
if ex, ac := expectBind, gotBinding; !reflect.DeepEqual(ex, ac) {
t.Errorf("Expected exact match on binding: %s", util.ObjectDiff(ex, ac))
}
<-called
events.Stop()
scheduledPodStore.Delete(pod)
_, exists, _ = assumedPodsStore.Get(pod)
if !exists {
t.Errorf("Expected pod %#v in assumed pod store", pod)
}
secondPod := podWithPort("bar", "", podPort)
queuedPodStore.Add(secondPod)
// queuedPodStore: [bar:8080]
// scheduledPodStore: []
// assumedPods: [foo:8080]
// Second scheduling pass will fail to schedule if the store hasn't expired
// the deleted pod. This would normally happen with a timeout.
//expirationPolicy.NeverExpire = util.NewStringSet()
fakeClock.Time = fakeClock.Time.Add(ttl + 1)
called = make(chan struct{})
events = eventBroadcaster.StartEventWatcher(func(e *api.Event) {
if e, a := "Scheduled", e.Reason; e != a {
t.Errorf("expected %v, got %v", e, a)
}
close(called)
})
s.scheduleOne()
expectBind = &api.Binding{
ObjectMeta: api.ObjectMeta{Name: "bar"},
Target: api.ObjectReference{Kind: "Node", Name: "machine1"},
}
if ex, ac := expectBind, gotBinding; !reflect.DeepEqual(ex, ac) {
t.Errorf("Expected exact match on binding: %s", util.ObjectDiff(ex, ac))
}
<-called
events.Stop()
}