scheduler: make algorithm source an option

Changes scheduler.New so that algorithm source is moved from the
parameter to an option. The default algorithm source is source with the
DefaultProvider.

cmd/kube-scheduler/app/server.go

@@ -189,9 +189,9 @@ func Run(ctx context.Context, cc schedulerserverconfig.CompletedConfig, outOfTre
 		cc.InformerFactory,
 		cc.PodInformer,
 		cc.Recorder,
-		cc.ComponentConfig.AlgorithmSource,
 		ctx.Done(),
 		scheduler.WithName(cc.ComponentConfig.SchedulerName),
+		scheduler.WithAlgorithmSource(cc.ComponentConfig.AlgorithmSource),
 		scheduler.WithHardPodAffinitySymmetricWeight(cc.ComponentConfig.HardPodAffinitySymmetricWeight),
 		scheduler.WithPreemptionDisabled(cc.ComponentConfig.DisablePreemption),
 		scheduler.WithPercentageOfNodesToScore(cc.ComponentConfig.PercentageOfNodesToScore),

pkg/scheduler/apis/config/testing/compatibility_test.go

@@ -1263,8 +1263,8 @@ func TestCompatibility_v1_Scheduler(t *testing.T) {
 				informerFactory,
 				informerFactory.Core().V1().Pods(),
 				nil,
-				algorithmSrc,
 				make(chan struct{}),
+				scheduler.WithAlgorithmSource(algorithmSrc),
 			)
 
 			if err != nil {

pkg/scheduler/scheduler.go

@@ -132,6 +132,7 @@ func (sched *Scheduler) Cache() internalcache.Cache {
 
 type schedulerOptions struct {
 	schedulerName                  string
+	schedulerAlgorithmSource       schedulerapi.SchedulerAlgorithmSource
 	hardPodAffinitySymmetricWeight int32
 	disablePreemption              bool
 	percentageOfNodesToScore       int32
@@ -157,6 +158,13 @@ func WithName(schedulerName string) Option {
 	}
 }
 
+// WithAlgorithmSource sets schedulerAlgorithmSource for Scheduler, the default is a source with DefaultProvider.
+func WithAlgorithmSource(source schedulerapi.SchedulerAlgorithmSource) Option {
+	return func(o *schedulerOptions) {
+		o.schedulerAlgorithmSource = source
+	}
+}
+
 // WithHardPodAffinitySymmetricWeight sets hardPodAffinitySymmetricWeight for Scheduler, the default value is 1
 func WithHardPodAffinitySymmetricWeight(hardPodAffinitySymmetricWeight int32) Option {
 	return func(o *schedulerOptions) {
@@ -237,6 +245,9 @@ func WithPodMaxBackoffSeconds(podMaxBackoffSeconds int64) Option {
 
 var defaultSchedulerOptions = schedulerOptions{
 	schedulerName: v1.DefaultSchedulerName,
+	schedulerAlgorithmSource: schedulerapi.SchedulerAlgorithmSource{
+		Provider: defaultAlgorithmSourceProviderName(),
+	},
 	hardPodAffinitySymmetricWeight:  v1.DefaultHardPodAffinitySymmetricWeight,
 	disablePreemption:               false,
 	percentageOfNodesToScore:        schedulerapi.DefaultPercentageOfNodesToScore,
@@ -260,7 +271,6 @@ func New(client clientset.Interface,
 	informerFactory informers.SharedInformerFactory,
 	podInformer coreinformers.PodInformer,
 	recorder events.EventRecorder,
-	schedulerAlgorithmSource schedulerapi.SchedulerAlgorithmSource,
 	stopCh <-chan struct{},
 	opts ...Option) (*Scheduler, error) {
 
@@ -326,7 +336,7 @@ func New(client clientset.Interface,
 		PluginConfig:                   options.frameworkPluginConfig,
 	})
 	var sched *Scheduler
-	source := schedulerAlgorithmSource
+	source := options.schedulerAlgorithmSource
 	switch {
 	case source.Provider != nil:
 		// Create the config from a named algorithm provider.
@@ -788,3 +798,8 @@ func (p *podPreemptorImpl) removeNominatedNodeName(pod *v1.Pod) error {
 	}
 	return p.setNominatedNodeName(pod, "")
 }
+
+func defaultAlgorithmSourceProviderName() *string {
+	provider := schedulerapi.SchedulerDefaultProviderName
+	return &provider
+}

pkg/scheduler/scheduler_test.go

@@ -192,8 +192,8 @@ func TestSchedulerCreation(t *testing.T) {
 		informerFactory,
 		NewPodInformer(client, 0),
 		eventBroadcaster.NewRecorder(scheme.Scheme, "scheduler"),
-		schedulerapi.SchedulerAlgorithmSource{Provider: &testSource},
 		stopCh,
+		WithAlgorithmSource(schedulerapi.SchedulerAlgorithmSource{Provider: &testSource}),
 		WithPodInitialBackoffSeconds(1),
 		WithPodMaxBackoffSeconds(10),
 	)

test/integration/daemonset/BUILD

@@ -21,7 +21,6 @@ go_test(
         "//pkg/controller/daemon:go_default_library",
         "//pkg/scheduler:go_default_library",
         "//pkg/scheduler/algorithmprovider:go_default_library",
-        "//pkg/scheduler/apis/config:go_default_library",
         "//pkg/util/labels:go_default_library",
         "//staging/src/k8s.io/api/apps/v1:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",

test/integration/daemonset/daemonset_test.go

@@ -47,7 +47,6 @@ import (
 	"k8s.io/kubernetes/pkg/controller/daemon"
 	"k8s.io/kubernetes/pkg/scheduler"
 	"k8s.io/kubernetes/pkg/scheduler/algorithmprovider"
-	schedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
 	labelsutil "k8s.io/kubernetes/pkg/util/labels"
 	"k8s.io/kubernetes/test/integration/framework"
 )
@@ -93,8 +92,6 @@ func setupScheduler(
 		Interface: cs.EventsV1beta1().Events(""),
 	})
 
-	defaultProviderName := schedulerconfig.SchedulerDefaultProviderName
-
 	sched, err := scheduler.New(
 		cs,
 		informerFactory,
@@ -103,9 +100,6 @@ func setupScheduler(
 			legacyscheme.Scheme,
 			v1.DefaultSchedulerName,
 		),
-		schedulerconfig.SchedulerAlgorithmSource{
-			Provider: &defaultProviderName,
-		},
 		ctx.Done(),
 	)
 	if err != nil {

test/integration/scheduler/scheduler_test.go

@@ -272,16 +272,16 @@ priorities: []
 			informerFactory,
 			scheduler.NewPodInformer(clientSet, 0),
 			eventBroadcaster.NewRecorder(legacyscheme.Scheme, v1.DefaultSchedulerName),
-			kubeschedulerconfig.SchedulerAlgorithmSource{
+			nil,
+			scheduler.WithName(v1.DefaultSchedulerName),
+			scheduler.WithAlgorithmSource(kubeschedulerconfig.SchedulerAlgorithmSource{
 				Policy: &kubeschedulerconfig.SchedulerPolicySource{
 					ConfigMap: &kubeschedulerconfig.SchedulerPolicyConfigMapSource{
 						Namespace: policyConfigMap.Namespace,
 						Name:      policyConfigMap.Name,
 					},
 				},
-			},
+			}),
-			nil,
-			scheduler.WithName(v1.DefaultSchedulerName),
 			scheduler.WithHardPodAffinitySymmetricWeight(v1.DefaultHardPodAffinitySymmetricWeight),
 			scheduler.WithBindTimeoutSeconds(defaultBindTimeout),
 		)
@@ -335,16 +335,16 @@ func TestSchedulerCreationFromNonExistentConfigMap(t *testing.T) {
 		informerFactory,
 		scheduler.NewPodInformer(clientSet, 0),
 		eventBroadcaster.NewRecorder(legacyscheme.Scheme, v1.DefaultSchedulerName),
-		kubeschedulerconfig.SchedulerAlgorithmSource{
+		nil,
+		scheduler.WithName(v1.DefaultSchedulerName),
+		scheduler.WithAlgorithmSource(kubeschedulerconfig.SchedulerAlgorithmSource{
 			Policy: &kubeschedulerconfig.SchedulerPolicySource{
 				ConfigMap: &kubeschedulerconfig.SchedulerPolicyConfigMapSource{
 					Namespace: "non-existent-config",
 					Name:      "non-existent-config",
 				},
 			},
-		},
+		}),
-		nil,
-		scheduler.WithName(v1.DefaultSchedulerName),
 		scheduler.WithHardPodAffinitySymmetricWeight(v1.DefaultHardPodAffinitySymmetricWeight),
 		scheduler.WithBindTimeoutSeconds(defaultBindTimeout))
 

test/integration/scheduler/util.go

@@ -181,14 +181,8 @@ func initTestSchedulerWithOptions(
 		legacyscheme.Scheme,
 		v1.DefaultSchedulerName,
 	)
-	var algorithmSrc schedulerapi.SchedulerAlgorithmSource
 	if policy != nil {
-		algorithmSrc = createAlgorithmSourceFromPolicy(policy, context.clientSet)
+		opts = append(opts, scheduler.WithAlgorithmSource(createAlgorithmSourceFromPolicy(policy, context.clientSet)))
-	} else {
-		provider := schedulerapi.SchedulerDefaultProviderName
-		algorithmSrc = schedulerapi.SchedulerAlgorithmSource{
-			Provider: &provider,
-		}
 	}
 	opts = append([]scheduler.Option{scheduler.WithBindTimeoutSeconds(600)}, opts...)
 	context.scheduler, err = scheduler.New(
@@ -196,7 +190,6 @@ func initTestSchedulerWithOptions(
 		context.informerFactory,
 		podInformer,
 		recorder,
-		algorithmSrc,
 		context.ctx.Done(),
 		opts...,
 	)

test/integration/util/BUILD

@@ -16,7 +16,6 @@ go_library(
         "//pkg/api/legacyscheme:go_default_library",
         "//pkg/scheduler:go_default_library",
         "//pkg/scheduler/algorithmprovider/defaults:go_default_library",
-        "//pkg/scheduler/apis/config:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/client-go/informers:go_default_library",
         "//staging/src/k8s.io/client-go/informers/core/v1:go_default_library",

test/integration/util/util.go

@@ -32,7 +32,6 @@ import (
 
 	// import DefaultProvider
 	_ "k8s.io/kubernetes/pkg/scheduler/algorithmprovider/defaults"
-	schedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
 	"k8s.io/kubernetes/test/integration/framework"
 )
 
@@ -99,16 +98,11 @@ func createScheduler(
 	recorder events.EventRecorder,
 	stopCh <-chan struct{},
 ) (*scheduler.Scheduler, error) {
-	defaultProviderName := schedulerconfig.SchedulerDefaultProviderName
-
 	return scheduler.New(
 		clientSet,
 		informerFactory,
 		podInformer,
 		recorder,
-		schedulerconfig.SchedulerAlgorithmSource{
-			Provider: &defaultProviderName,
-		},
 		stopCh,
 	)
 }

test/integration/volumescheduling/BUILD

@@ -59,7 +59,6 @@ go_library(
         "//pkg/api/v1/pod:go_default_library",
         "//pkg/scheduler:go_default_library",
         "//pkg/scheduler/algorithmprovider/defaults:go_default_library",
-        "//pkg/scheduler/apis/config:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",

test/integration/volumescheduling/util.go

@@ -37,7 +37,6 @@ import (
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
 	podutil "k8s.io/kubernetes/pkg/api/v1/pod"
 	"k8s.io/kubernetes/pkg/scheduler"
-	schedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
 	"k8s.io/kubernetes/test/integration/framework"
 
 	// Install "DefaultProvider" algorithprovider
@@ -142,16 +141,11 @@ func createSchedulerWithPodInformer(
 	recorder events.EventRecorder,
 	stopCh <-chan struct{},
 ) (*scheduler.Scheduler, error) {
-	defaultProviderName := schedulerconfig.SchedulerDefaultProviderName
-
 	return scheduler.New(
 		clientSet,
 		informerFactory,
 		podInformer,
 		recorder,
-		schedulerconfig.SchedulerAlgorithmSource{
-			Provider: &defaultProviderName,
-		},
 		stopCh,
 	)
 }