func NewJobController(podInformer framework.SharedIndexInformer, kubeClient clientset.Interface) *JobController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
// TODO: remove the wrapper when every clients have moved to use the clientset.
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
if kubeClient != nil && kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
metrics.RegisterMetricAndTrackRateLimiterUsage("job_controller", kubeClient.Core().GetRESTClient().GetRateLimiter())
}
jm := &JobController{
kubeClient: kubeClient,
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "job-controller"}),
},
expectations: controller.NewControllerExpectations(),
queue: workqueue.New(),
recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "job-controller"}),
}
jm.jobStore.Store, jm.jobController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return jm.kubeClient.Batch().Jobs(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return jm.kubeClient.Batch().Jobs(api.NamespaceAll).Watch(options)
},
},
&batch.Job{},
// TODO: Can we have much longer period here?
replicationcontroller.FullControllerResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: jm.enqueueController,
UpdateFunc: func(old, cur interface{}) {
if job := cur.(*batch.Job); !isJobFinished(job) {
jm.enqueueController(job)
}
},
DeleteFunc: jm.enqueueController,
},
)
podInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
AddFunc: jm.addPod,
UpdateFunc: jm.updatePod,
DeleteFunc: jm.deletePod,
})
jm.podStore.Indexer = podInformer.GetIndexer()
jm.podStoreSynced = podInformer.HasSynced
jm.updateHandler = jm.updateJobStatus
jm.syncHandler = jm.syncJob
return jm
}
// NewPetSetController creates a new petset controller.
func NewPetSetController(podInformer framework.SharedIndexInformer, kubeClient *client.Client, resyncPeriod time.Duration) *PetSetController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "petset"})
pc := &apiServerPetClient{kubeClient, recorder, &defaultPetHealthChecker{}}
psc := &PetSetController{
kubeClient: kubeClient,
blockingPetStore: newUnHealthyPetTracker(pc),
newSyncer: func(blockingPet *pcb) *petSyncer {
return &petSyncer{pc, blockingPet}
},
queue: workqueue.New(),
}
podInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
// lookup the petset and enqueue
AddFunc: psc.addPod,
// lookup current and old petset if labels changed
UpdateFunc: psc.updatePod,
// lookup petset accounting for deletion tombstones
DeleteFunc: psc.deletePod,
})
psc.podStore.Indexer = podInformer.GetIndexer()
psc.podController = podInformer.GetController()
psc.psStore.Store, psc.psController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return psc.kubeClient.Apps().PetSets(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return psc.kubeClient.Apps().PetSets(api.NamespaceAll).Watch(options)
},
},
&apps.PetSet{},
petSetResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: psc.enqueuePetSet,
UpdateFunc: func(old, cur interface{}) {
oldPS := old.(*apps.PetSet)
curPS := cur.(*apps.PetSet)
if oldPS.Status.Replicas != curPS.Status.Replicas {
glog.V(4).Infof("Observed updated replica count for PetSet: %v, %d->%d", curPS.Name, oldPS.Status.Replicas, curPS.Status.Replicas)
}
psc.enqueuePetSet(cur)
},
DeleteFunc: psc.enqueuePetSet,
},
)
// TODO: Watch volumes
psc.podStoreSynced = psc.podController.HasSynced
psc.syncHandler = psc.Sync
return psc
}
func TestLen(t *testing.T) {
q := workqueue.New()
q.Add("foo")
if e, a := 1, q.Len(); e != a {
t.Errorf("Expected %v, got %v", e, a)
}
q.Add("bar")
if e, a := 2, q.Len(); e != a {
t.Errorf("Expected %v, got %v", e, a)
}
q.Add("foo") // should not increase the queue length.
if e, a := 2, q.Len(); e != a {
t.Errorf("Expected %v, got %v", e, a)
}
}
func TestBasic(t *testing.T) {
// If something is seriously wrong this test will never complete.
q := workqueue.New()
// Start producers
const producers = 50
producerWG := sync.WaitGroup{}
producerWG.Add(producers)
for i := 0; i < producers; i++ {
go func(i int) {
defer producerWG.Done()
for j := 0; j < 50; j++ {
q.Add(i)
time.Sleep(time.Millisecond)
}
}(i)
}
// Start consumers
const consumers = 10
consumerWG := sync.WaitGroup{}
consumerWG.Add(consumers)
for i := 0; i < consumers; i++ {
go func(i int) {
defer consumerWG.Done()
for {
item, quit := q.Get()
if item == "added after shutdown!" {
t.Errorf("Got an item added after shutdown.")
}
if quit {
return
}
t.Logf("Worker %v: begin processing %v", i, item)
time.Sleep(3 * time.Millisecond)
t.Logf("Worker %v: done processing %v", i, item)
q.Done(item)
}
}(i)
}
producerWG.Wait()
q.ShutDown()
q.Add("added after shutdown!")
consumerWG.Wait()
}
func TestAddWhileProcessing(t *testing.T) {
q := workqueue.New()
// Start producers
const producers = 50
producerWG := sync.WaitGroup{}
producerWG.Add(producers)
for i := 0; i < producers; i++ {
go func(i int) {
defer producerWG.Done()
q.Add(i)
}(i)
}
// Start consumers
const consumers = 10
consumerWG := sync.WaitGroup{}
consumerWG.Add(consumers)
for i := 0; i < consumers; i++ {
go func(i int) {
defer consumerWG.Done()
// Every worker will re-add every item up to two times.
// This tests the dirty-while-processing case.
counters := map[interface{}]int{}
for {
item, quit := q.Get()
if quit {
return
}
counters[item]++
if counters[item] < 2 {
q.Add(item)
}
q.Done(item)
}
}(i)
}
producerWG.Wait()
q.ShutDown()
consumerWG.Wait()
}
// NewEndpointController returns a new *EndpointController.
func NewEndpointController(podInformer framework.SharedIndexInformer, client *clientset.Clientset) *EndpointController {
if client != nil && client.Core().GetRESTClient().GetRateLimiter() != nil {
metrics.RegisterMetricAndTrackRateLimiterUsage("endpoint_controller", client.Core().GetRESTClient().GetRateLimiter())
}
e := &EndpointController{
client: client,
queue: workqueue.New(),
}
e.serviceStore.Store, e.serviceController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return e.client.Core().Services(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return e.client.Core().Services(api.NamespaceAll).Watch(options)
},
},
&api.Service{},
// TODO: Can we have much longer period here?
FullServiceResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: e.enqueueService,
UpdateFunc: func(old, cur interface{}) {
e.enqueueService(cur)
},
DeleteFunc: e.enqueueService,
},
)
podInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
AddFunc: e.addPod,
UpdateFunc: e.updatePod,
DeleteFunc: e.deletePod,
})
e.podStore.Indexer = podInformer.GetIndexer()
e.podController = podInformer.GetController()
e.podStoreSynced = podInformer.HasSynced
return e
}
func TestProcessEvent(t *testing.T) {
var testScenarios = []struct {
name string
// a series of events that will be supplied to the
// Propagator.eventQueue.
events []event
}{
{
name: "test1",
events: []event{
createEvent(addEvent, "1", []string{}),
createEvent(addEvent, "2", []string{"1"}),
createEvent(addEvent, "3", []string{"1", "2"}),
},
},
{
name: "test2",
events: []event{
createEvent(addEvent, "1", []string{}),
createEvent(addEvent, "2", []string{"1"}),
createEvent(addEvent, "3", []string{"1", "2"}),
createEvent(addEvent, "4", []string{"2"}),
createEvent(deleteEvent, "2", []string{"doesn't matter"}),
},
},
{
name: "test3",
events: []event{
createEvent(addEvent, "1", []string{}),
createEvent(addEvent, "2", []string{"1"}),
createEvent(addEvent, "3", []string{"1", "2"}),
createEvent(addEvent, "4", []string{"3"}),
createEvent(updateEvent, "2", []string{"4"}),
},
},
{
name: "reverse test2",
events: []event{
createEvent(addEvent, "4", []string{"2"}),
createEvent(addEvent, "3", []string{"1", "2"}),
createEvent(addEvent, "2", []string{"1"}),
createEvent(addEvent, "1", []string{}),
createEvent(deleteEvent, "2", []string{"doesn't matter"}),
},
},
}
for _, scenario := range testScenarios {
propagator := &Propagator{
eventQueue: workqueue.New(),
uidToNode: &concurrentUIDToNode{
RWMutex: &sync.RWMutex{},
uidToNode: make(map[types.UID]*node),
},
gc: &GarbageCollector{
dirtyQueue: workqueue.New(),
},
}
for i := 0; i < len(scenario.events); i++ {
propagator.eventQueue.Add(scenario.events[i])
propagator.processEvent()
verifyGraphInvariants(scenario.name, propagator.uidToNode.uidToNode, t)
}
}
}
func NewDaemonSetsController(podInformer framework.SharedIndexInformer, kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, lookupCacheSize int) *DaemonSetsController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
// TODO: remove the wrapper when every clients have moved to use the clientset.
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
if kubeClient != nil && kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
metrics.RegisterMetricAndTrackRateLimiterUsage("daemon_controller", kubeClient.Core().GetRESTClient().GetRateLimiter())
}
dsc := &DaemonSetsController{
kubeClient: kubeClient,
eventRecorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "daemonset-controller"}),
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "daemon-set"}),
},
burstReplicas: BurstReplicas,
expectations: controller.NewControllerExpectations(),
queue: workqueue.New(),
}
// Manage addition/update of daemon sets.
dsc.dsStore.Store, dsc.dsController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).Watch(options)
},
},
&extensions.DaemonSet{},
// TODO: Can we have much longer period here?
FullDaemonSetResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
ds := obj.(*extensions.DaemonSet)
glog.V(4).Infof("Adding daemon set %s", ds.Name)
dsc.enqueueDaemonSet(ds)
},
UpdateFunc: func(old, cur interface{}) {
oldDS := old.(*extensions.DaemonSet)
curDS := cur.(*extensions.DaemonSet)
// We should invalidate the whole lookup cache if a DS's selector has been updated.
//
// Imagine that you have two RSs:
// * old DS1
// * new DS2
// You also have a pod that is attached to DS2 (because it doesn't match DS1 selector).
// Now imagine that you are changing DS1 selector so that it is now matching that pod,
// in such case we must invalidate the whole cache so that pod could be adopted by DS1
//
// This makes the lookup cache less helpful, but selector update does not happen often,
// so it's not a big problem
if !reflect.DeepEqual(oldDS.Spec.Selector, curDS.Spec.Selector) {
dsc.lookupCache.InvalidateAll()
}
glog.V(4).Infof("Updating daemon set %s", oldDS.Name)
dsc.enqueueDaemonSet(curDS)
},
DeleteFunc: dsc.deleteDaemonset,
},
)
// Watch for creation/deletion of pods. The reason we watch is that we don't want a daemon set to create/delete
// more pods until all the effects (expectations) of a daemon set's create/delete have been observed.
podInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
AddFunc: dsc.addPod,
UpdateFunc: dsc.updatePod,
DeleteFunc: dsc.deletePod,
})
dsc.podStore.Indexer = podInformer.GetIndexer()
dsc.podController = podInformer.GetController()
dsc.podStoreSynced = podInformer.HasSynced
// Watch for new nodes or updates to nodes - daemon pods are launched on new nodes, and possibly when labels on nodes change,
dsc.nodeStore.Store, dsc.nodeController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return dsc.kubeClient.Core().Nodes().List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return dsc.kubeClient.Core().Nodes().Watch(options)
},
},
&api.Node{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: dsc.addNode,
UpdateFunc: dsc.updateNode,
},
)
dsc.syncHandler = dsc.syncDaemonSet
dsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
return dsc
}
// NewReplicaSetController creates a new ReplicaSetController.
func NewReplicaSetController(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int, lookupCacheSize int) *ReplicaSetController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
if kubeClient != nil && kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
metrics.RegisterMetricAndTrackRateLimiterUsage("replicaset_controller", kubeClient.Core().GetRESTClient().GetRateLimiter())
}
rsc := &ReplicaSetController{
kubeClient: kubeClient,
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "replicaset-controller"}),
},
burstReplicas: burstReplicas,
expectations: controller.NewUIDTrackingControllerExpectations(controller.NewControllerExpectations()),
queue: workqueue.New(),
}
rsc.rsStore.Store, rsc.rsController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return rsc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return rsc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).Watch(options)
},
},
&extensions.ReplicaSet{},
// TODO: Can we have much longer period here?
FullControllerResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: rsc.enqueueReplicaSet,
UpdateFunc: func(old, cur interface{}) {
oldRS := old.(*extensions.ReplicaSet)
curRS := cur.(*extensions.ReplicaSet)
// We should invalidate the whole lookup cache if a RS's selector has been updated.
//
// Imagine that you have two RSs:
// * old RS1
// * new RS2
// You also have a pod that is attached to RS2 (because it doesn't match RS1 selector).
// Now imagine that you are changing RS1 selector so that it is now matching that pod,
// in such case we must invalidate the whole cache so that pod could be adopted by RS1
//
// This makes the lookup cache less helpful, but selector update does not happen often,
// so it's not a big problem
if !reflect.DeepEqual(oldRS.Spec.Selector, curRS.Spec.Selector) {
rsc.lookupCache.InvalidateAll()
}
// You might imagine that we only really need to enqueue the
// replica set when Spec changes, but it is safer to sync any
// time this function is triggered. That way a full informer
// resync can requeue any replica set that don't yet have pods
// but whose last attempts at creating a pod have failed (since
// we don't block on creation of pods) instead of those
// replica sets stalling indefinitely. Enqueueing every time
// does result in some spurious syncs (like when Status.Replica
// is updated and the watch notification from it retriggers
// this function), but in general extra resyncs shouldn't be
// that bad as ReplicaSets that haven't met expectations yet won't
// sync, and all the listing is done using local stores.
if oldRS.Status.Replicas != curRS.Status.Replicas {
glog.V(4).Infof("Observed updated replica count for ReplicaSet: %v, %d->%d", curRS.Name, oldRS.Status.Replicas, curRS.Status.Replicas)
}
rsc.enqueueReplicaSet(cur)
},
// This will enter the sync loop and no-op, because the replica set has been deleted from the store.
// Note that deleting a replica set immediately after scaling it to 0 will not work. The recommended
// way of achieving this is by performing a `stop` operation on the replica set.
DeleteFunc: rsc.enqueueReplicaSet,
},
)
rsc.podStore.Indexer, rsc.podController = framework.NewIndexerInformer(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return rsc.kubeClient.Core().Pods(api.NamespaceAll).List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return rsc.kubeClient.Core().Pods(api.NamespaceAll).Watch(options)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: rsc.addPod,
// This invokes the ReplicaSet for every pod change, eg: host assignment. Though this might seem like
// overkill the most frequent pod update is status, and the associated ReplicaSet will only list from
// local storage, so it should be ok.
UpdateFunc: rsc.updatePod,
DeleteFunc: rsc.deletePod,
},
cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
)
rsc.syncHandler = rsc.syncReplicaSet
rsc.podStoreSynced = rsc.podController.HasSynced
rsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
return rsc
}