Remove PVCLister and use informer directly.

plugin/pkg/scheduler/algorithm/types.go

@@ -117,12 +117,6 @@ type ReplicaSetLister interface {
 	GetPodReplicaSets(*v1.Pod) ([]*extensions.ReplicaSet, error)
 }
 
-// PersistentVolumeClaimLister interface represents anything that can list PVCs for a scheduler.
-type PersistentVolumeClaimLister interface {
-	// Gets given PVC
-	Get(namespace, name string) (*v1.PersistentVolumeClaim, error)
-}
-
 var _ ControllerLister = &EmptyControllerLister{}
 
 // EmptyControllerLister implements ControllerLister on []v1.ReplicationController returning empty data

plugin/pkg/scheduler/core/BUILD

@@ -64,6 +64,7 @@ go_library(
         "//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//vendor/k8s.io/apiserver/pkg/util/trace:go_default_library",
+        "//vendor/k8s.io/client-go/listers/core/v1:go_default_library",
         "//vendor/k8s.io/client-go/rest:go_default_library",
         "//vendor/k8s.io/client-go/tools/cache:go_default_library",
         "//vendor/k8s.io/client-go/util/workqueue:go_default_library",

plugin/pkg/scheduler/core/generic_scheduler.go

@@ -31,6 +31,7 @@ import (
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/util/errors"
 	utiltrace "k8s.io/apiserver/pkg/util/trace"
+	corelisters "k8s.io/client-go/listers/core/v1"
 	"k8s.io/client-go/util/workqueue"
 	"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm"
 	"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm/predicates"
@@ -98,10 +99,10 @@ type genericScheduler struct {
 	extenders             []algorithm.SchedulerExtender
 	lastNodeIndexLock     sync.Mutex
 	lastNodeIndex         uint64
-	pvcLister             algorithm.PersistentVolumeClaimLister
 
 	cachedNodeInfoMap map[string]*schedulercache.NodeInfo
 	volumeBinder      *volumebinder.VolumeBinder
+	pvcLister         corelisters.PersistentVolumeClaimLister
 }
 
 // Schedule tries to schedule the given pod to one of node in the node list.
@@ -1001,7 +1002,7 @@ func podEligibleToPreemptOthers(pod *v1.Pod, nodeNameToInfo map[string]*schedule
 }
 
 // podPassesBasicChecks makes sanity checks on the pod if it can be scheduled.
-func podPassesBasicChecks(pod *v1.Pod, pvcLister algorithm.PersistentVolumeClaimLister) error {
+func podPassesBasicChecks(pod *v1.Pod, pvcLister corelisters.PersistentVolumeClaimLister) error {
 	// Check PVCs used by the pod
 	namespace := pod.Namespace
 	manifest := &(pod.Spec)
@@ -1012,7 +1013,7 @@ func podPassesBasicChecks(pod *v1.Pod, pvcLister algorithm.PersistentVolumeClaim
 			continue
 		}
 		pvcName := volume.PersistentVolumeClaim.ClaimName
-		pvc, err := pvcLister.Get(namespace, pvcName)
+		pvc, err := pvcLister.PersistentVolumeClaims(namespace).Get(pvcName)
 		if err != nil {
 			// The error has already enough context ("persistentvolumeclaim "myclaim" not found")
 			return err
@@ -1036,7 +1037,7 @@ func NewGenericScheduler(
 	priorityMetaProducer algorithm.MetadataProducer,
 	extenders []algorithm.SchedulerExtender,
 	volumeBinder *volumebinder.VolumeBinder,
-	pvcLister algorithm.PersistentVolumeClaimLister) algorithm.ScheduleAlgorithm {
+	pvcLister corelisters.PersistentVolumeClaimLister) algorithm.ScheduleAlgorithm {
 	return &genericScheduler{
 		cache:                 cache,
 		equivalenceCache:      eCache,

plugin/pkg/scheduler/factory/factory.go

@@ -903,7 +903,7 @@ func (f *configFactory) CreateFromKeys(predicateKeys, priorityKeys sets.String,
 		glog.Info("Created equivalence class cache")
 	}
 
-	algo := core.NewGenericScheduler(f.schedulerCache, f.equivalencePodCache, f.podQueue, predicateFuncs, predicateMetaProducer, priorityConfigs, priorityMetaProducer, extenders, f.volumeBinder, &pvcLister{f.pVCLister})
+	algo := core.NewGenericScheduler(f.schedulerCache, f.equivalencePodCache, f.podQueue, predicateFuncs, predicateMetaProducer, priorityConfigs, priorityMetaProducer, extenders, f.volumeBinder, f.pVCLister)
 
 	podBackoff := util.CreateDefaultPodBackoff()
 	return &scheduler.Config{
@@ -935,14 +935,6 @@ func (n *nodeLister) List() ([]*v1.Node, error) {
 	return n.NodeLister.List(labels.Everything())
 }
 
-type pvcLister struct {
-	corelisters.PersistentVolumeClaimLister
-}
-
-func (p *pvcLister) Get(namespace, name string) (*v1.PersistentVolumeClaim, error) {
-	return p.PersistentVolumeClaimLister.PersistentVolumeClaims(namespace).Get(name)
-}
-
 func (f *configFactory) GetPriorityFunctionConfigs(priorityKeys sets.String) ([]algorithm.PriorityConfig, error) {
 	pluginArgs, err := f.getPluginArgs()
 	if err != nil {

plugin/pkg/scheduler/testing/BUILD

@@ -22,6 +22,7 @@ go_library(
         "//vendor/k8s.io/api/policy/v1beta1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
+        "//vendor/k8s.io/client-go/listers/core/v1:go_default_library",
     ],
 )
 

plugin/pkg/scheduler/testing/fake_lister.go

@@ -24,6 +24,7 @@ import (
 	extensions "k8s.io/api/extensions/v1beta1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
+	corelisters "k8s.io/client-go/listers/core/v1"
 	. "k8s.io/kubernetes/plugin/pkg/scheduler/algorithm"
 	"k8s.io/kubernetes/plugin/pkg/scheduler/schedulercache"
 )
@@ -180,14 +181,34 @@ func (f FakeStatefulSetLister) GetPodStatefulSets(pod *v1.Pod) (sss []*apps.Stat
 // FakePersistentVolumeClaimLister implements PersistentVolumeClaimLister on []*v1.PersistentVolumeClaim for test purposes.
 type FakePersistentVolumeClaimLister []*v1.PersistentVolumeClaim
 
-var _ PersistentVolumeClaimLister = FakePersistentVolumeClaimLister{}
+var _ corelisters.PersistentVolumeClaimLister = FakePersistentVolumeClaimLister{}
 
-// List returns nodes as a []string.
-func (f FakePersistentVolumeClaimLister) Get(namespace, name string) (*v1.PersistentVolumeClaim, error) {
-	for _, pvc := range f {
-		if pvc.Name == name && pvc.Namespace == namespace {
+func (f FakePersistentVolumeClaimLister) List(selector labels.Selector) (ret []*v1.PersistentVolumeClaim, err error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (f FakePersistentVolumeClaimLister) PersistentVolumeClaims(namespace string) corelisters.PersistentVolumeClaimNamespaceLister {
+	return &fakePersistentVolumeClaimNamespaceLister{
+		pvcs:      f,
+		namespace: namespace,
+	}
+}
+
+// fakePersistentVolumeClaimNamespaceLister is implementation of PersistentVolumeClaimNamespaceLister returned by List() above.
+type fakePersistentVolumeClaimNamespaceLister struct {
+	pvcs      []*v1.PersistentVolumeClaim
+	namespace string
+}
+
+func (f *fakePersistentVolumeClaimNamespaceLister) Get(name string) (*v1.PersistentVolumeClaim, error) {
+	for _, pvc := range f.pvcs {
+		if pvc.Name == name && pvc.Namespace == f.namespace {
 			return pvc, nil
 		}
 	}
 	return nil, fmt.Errorf("persistentvolumeclaim %q not found", name)
 }
+
+func (f fakePersistentVolumeClaimNamespaceLister) List(selector labels.Selector) (ret []*v1.PersistentVolumeClaim, err error) {
+	return nil, fmt.Errorf("not implemented")
+}