Add ClusterStateRegistry to the AutoscalingContext

cluster-autoscaler/clusterstate/clusterstate.go

@@ -45,6 +45,10 @@ const (
 	MaxNodeStartupTime = 15 * time.Minute
 )
 
+var (
+	errMaxNodeProvisionTimeProviderNotSet = errors.New("MaxNodeProvisionTimeProvider was not set in cluster state")
+)
+
 type maxNodeProvisionTimeProvider interface {
 	// GetMaxNodeProvisionTime returns MaxNodeProvisionTime value that should be used for the given NodeGroup.
 	GetMaxNodeProvisionTime(nodeGroup cloudprovider.NodeGroup) (time.Duration, error)
@@ -143,7 +147,7 @@ type ClusterStateRegistry struct {
 }
 
 // NewClusterStateRegistry creates new ClusterStateRegistry.
-func NewClusterStateRegistry(cloudProvider cloudprovider.CloudProvider, config ClusterStateRegistryConfig, logRecorder *utils.LogEventRecorder, backoff backoff.Backoff, maxNodeProvisionTimeProvider maxNodeProvisionTimeProvider) *ClusterStateRegistry {
+func NewClusterStateRegistry(cloudProvider cloudprovider.CloudProvider, config ClusterStateRegistryConfig, logRecorder *utils.LogEventRecorder, backoff backoff.Backoff) *ClusterStateRegistry {
 	emptyStatus := &api.ClusterAutoscalerStatus{
 		ClusterwideConditions: make([]api.ClusterAutoscalerCondition, 0),
 		NodeGroupStatuses:     make([]api.NodeGroupStatus, 0),
@@ -167,7 +171,6 @@ func NewClusterStateRegistry(cloudProvider cloudprovider.CloudProvider, config C
 		cloudProviderNodeInstancesCache: utils.NewCloudProviderNodeInstancesCache(cloudProvider),
 		interrupt:                       make(chan struct{}),
 		scaleUpFailures:                 make(map[string][]ScaleUpFailure),
-		maxNodeProvisionTimeProvider:    maxNodeProvisionTimeProvider,
 	}
 }
 
@@ -193,13 +196,21 @@ func (csr *ClusterStateRegistry) RegisterOrUpdateScaleUp(nodeGroup cloudprovider
 	csr.registerOrUpdateScaleUpNoLock(nodeGroup, delta, currentTime)
 }
 
+// RegisterProviders registers providers in the cluster state registry.
+func (csr *ClusterStateRegistry) RegisterProviders(maxNodeProvisionTimeProvider maxNodeProvisionTimeProvider) {
+	csr.maxNodeProvisionTimeProvider = maxNodeProvisionTimeProvider
+}
+
 // MaxNodeProvisionTime returns MaxNodeProvisionTime value that should be used for the given NodeGroup.
 func (csr *ClusterStateRegistry) MaxNodeProvisionTime(nodeGroup cloudprovider.NodeGroup) (time.Duration, error) {
+	if csr.maxNodeProvisionTimeProvider == nil {
+		return 0, errMaxNodeProvisionTimeProviderNotSet
+	}
 	return csr.maxNodeProvisionTimeProvider.GetMaxNodeProvisionTime(nodeGroup)
 }
 
 func (csr *ClusterStateRegistry) registerOrUpdateScaleUpNoLock(nodeGroup cloudprovider.NodeGroup, delta int, currentTime time.Time) {
-	maxNodeProvisionTime, err := csr.maxNodeProvisionTimeProvider.GetMaxNodeProvisionTime(nodeGroup)
+	maxNodeProvisionTime, err := csr.MaxNodeProvisionTime(nodeGroup)
 	if err != nil {
 		klog.Warningf("Couldn't update scale up request: failed to get maxNodeProvisionTime for node group %s: %w", nodeGroup.Id(), err)
 		return
@@ -605,7 +616,7 @@ func (csr *ClusterStateRegistry) updateReadinessStats(currentTime time.Time) {
 			continue
 		}
 		perNgCopy := perNodeGroup[nodeGroup.Id()]
-		maxNodeProvisionTime, err := csr.maxNodeProvisionTimeProvider.GetMaxNodeProvisionTime(nodeGroup)
+		maxNodeProvisionTime, err := csr.MaxNodeProvisionTime(nodeGroup)
 		if err != nil {
 			klog.Warningf("Failed to get maxNodeProvisionTime for node %s in node group %s: %w", unregistered.Node.Name, nodeGroup.Id(), err)
 			continue

cluster-autoscaler/clusterstate/clusterstate_test.go

@@ -72,8 +72,8 @@ func TestOKWithScaleUp(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(time.Minute))
 	clusterstate.RegisterOrUpdateScaleUp(provider.GetNodeGroup("ng1"), 4, time.Now())
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
@@ -114,8 +114,8 @@ func TestEmptyOK(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{}, nil, now.Add(-5*time.Second))
 	assert.NoError(t, err)
 	assert.True(t, clusterstate.IsClusterHealthy())
@@ -155,7 +155,8 @@ func TestOKOneUnreadyNode(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(), NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
 	assert.True(t, clusterstate.IsClusterHealthy())
@@ -193,8 +194,8 @@ func TestNodeWithoutNodeGroupDontCrash(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{noNgNode}, nil, now)
 	assert.NoError(t, err)
 	assert.Empty(t, clusterstate.GetScaleUpFailures())
@@ -221,8 +222,8 @@ func TestOKOneUnreadyNodeWithScaleDownCandidate(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	clusterstate.UpdateScaleDownCandidates([]*apiv1.Node{ng1_1}, now)
 
@@ -287,8 +288,8 @@ func TestMissingNodes(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
 	assert.True(t, clusterstate.IsClusterHealthy())
@@ -330,8 +331,8 @@ func TestTooManyUnready(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
 	assert.False(t, clusterstate.IsClusterHealthy())
@@ -360,8 +361,8 @@ func TestUnreadyLongAfterCreation(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, len(clusterstate.GetClusterReadiness().Unready))
@@ -393,8 +394,8 @@ func TestNotStarted(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1}, nil, now)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, len(clusterstate.GetClusterReadiness().NotStarted))
@@ -431,7 +432,8 @@ func TestExpiredScaleUp(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(), NewStaticMaxNodeProvisionTimeProvider(2*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(2 * time.Minute))
 	clusterstate.RegisterOrUpdateScaleUp(provider.GetNodeGroup("ng1"), 4, now.Add(-3*time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1}, nil, now)
 	assert.NoError(t, err)
@@ -456,8 +458,8 @@ func TestRegisterScaleDown(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 
 	now := time.Now()
 
@@ -526,8 +528,8 @@ func TestUpcomingNodes(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1, ng3_1, ng4_1, ng5_1, ng5_2}, nil, now)
 	assert.NoError(t, err)
 	assert.Empty(t, clusterstate.GetScaleUpFailures())
@@ -574,8 +576,8 @@ func TestTaintBasedNodeDeletion(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng1_2}, nil, now)
 	assert.NoError(t, err)
 	assert.Empty(t, clusterstate.GetScaleUpFailures())
@@ -596,8 +598,8 @@ func TestIncorrectSize(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 	now := time.Now()
 	clusterstate.UpdateNodes([]*apiv1.Node{ng1_1}, nil, now.Add(-5*time.Minute))
 	incorrect := clusterstate.incorrectNodeGroupSizes["ng1"]
@@ -633,8 +635,8 @@ func TestUnregisteredNodes(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(10*time.Second))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(10 * time.Second))
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1}, nil, time.Now().Add(-time.Minute))
 
 	assert.NoError(t, err)
@@ -683,8 +685,8 @@ func TestCloudProviderDeletedNodes(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(10*time.Second))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(10 * time.Second))
 	now.Add(time.Minute)
 	err := clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng1_2, noNgNode}, nil, now)
 
@@ -885,8 +887,8 @@ func TestScaleUpBackoff(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(120*time.Second))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(120 * time.Second))
 
 	// After failed scale-up, node group should be still healthy, but should backoff from scale-ups
 	clusterstate.RegisterOrUpdateScaleUp(provider.GetNodeGroup("ng1"), 1, now.Add(-180*time.Second))
@@ -953,8 +955,8 @@ func TestGetClusterSize(t *testing.T) {
 	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{
 		MaxTotalUnreadyPercentage: 10,
 		OkTotalUnreadyCount:       1,
-	}, fakeLogRecorder, newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 
 	// There are 2 actual nodes in 2 node groups with target sizes of 5 and 1.
 	clusterstate.UpdateNodes([]*apiv1.Node{ng1_1, ng2_1, notAutoscaledNode}, nil, now)
@@ -1001,7 +1003,8 @@ func TestUpdateScaleUp(t *testing.T) {
 		},
 		fakeLogRecorder,
 		newBackoff(),
-		NewStaticMaxNodeProvisionTimeProvider(10*time.Second))
+	)
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(10 * time.Second))
 
 	clusterstate.RegisterOrUpdateScaleUp(provider.GetNodeGroup("ng1"), 100, now)
 	assert.Equal(t, clusterstate.scaleUpRequests["ng1"].Increase, 100)
@@ -1039,7 +1042,8 @@ func TestScaleUpFailures(t *testing.T) {
 
 	fakeClient := &fake.Clientset{}
 	fakeLogRecorder, _ := utils.NewStatusMapRecorder(fakeClient, "kube-system", kube_record.NewFakeRecorder(5), false, "my-cool-configmap")
-	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{}, fakeLogRecorder, newBackoff(), NewStaticMaxNodeProvisionTimeProvider(15*time.Minute))
+	clusterstate := NewClusterStateRegistry(provider, ClusterStateRegistryConfig{}, fakeLogRecorder, newBackoff())
+	clusterstate.RegisterProviders(NewMockMaxNodeProvisionTimeProvider(15 * time.Minute))
 
 	clusterstate.RegisterFailedScaleUp(provider.GetNodeGroup("ng1"), metrics.Timeout, now)
 	clusterstate.RegisterFailedScaleUp(provider.GetNodeGroup("ng2"), metrics.Timeout, now)

cluster-autoscaler/clusterstate/max_node_provision_time_provider.go → cluster-autoscaler/clusterstate/providers/max_node_provision_time_provider.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package clusterstate
+package providers
 
 import (
 	"time"
@@ -25,7 +25,7 @@ import (
 )
 
 // NewDefaultMaxNodeProvisionTimeProvider returns the default maxNodeProvisionTimeProvider which uses the NodeGroupConfigProcessor.
-func NewDefaultMaxNodeProvisionTimeProvider(context *context.AutoscalingContext, nodeGroupConfigProcessor nodegroupconfig.NodeGroupConfigProcessor) maxNodeProvisionTimeProvider {
+func NewDefaultMaxNodeProvisionTimeProvider(context *context.AutoscalingContext, nodeGroupConfigProcessor nodegroupconfig.NodeGroupConfigProcessor) *defultMaxNodeProvisionTimeProvider {
 	return &defultMaxNodeProvisionTimeProvider{context: context, nodeGroupConfigProcessor: nodeGroupConfigProcessor}
 }
 
@@ -38,17 +38,3 @@ type defultMaxNodeProvisionTimeProvider struct {
 func (p *defultMaxNodeProvisionTimeProvider) GetMaxNodeProvisionTime(nodeGroup cloudprovider.NodeGroup) (time.Duration, error) {
 	return p.nodeGroupConfigProcessor.GetMaxNodeProvisionTime(p.context, nodeGroup)
 }
-
-// NewStaticMaxNodeProvisionTimeProvider returns static maxNodeProvisionTimeProvider which returns constant MaxNodeProvisionTime for every NodeGroup. Can be used for convenient testing.
-func NewStaticMaxNodeProvisionTimeProvider(maxNodeProvisionTime time.Duration) maxNodeProvisionTimeProvider {
-	return &staticMaxNodeProvisionTimeProvider{maxNodeProvisionTime}
-}
-
-type staticMaxNodeProvisionTimeProvider struct {
-	staticMaxNodeProvisionTime time.Duration
-}
-
-// GetMaxNodeProvisionTime returns constant MaxNodeProvisionTime value that should be used for every NodeGroup.
-func (p *staticMaxNodeProvisionTimeProvider) GetMaxNodeProvisionTime(cloudprovider.NodeGroup) (time.Duration, error) {
-	return p.staticMaxNodeProvisionTime, nil
-}

cluster-autoscaler/clusterstate/testutils.go

@@ -0,0 +1,37 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package clusterstate
+
+import (
+	"time"
+
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
+)
+
+// NewMockMaxNodeProvisionTimeProvider returns static maxNodeProvisionTimeProvider which returns constant MaxNodeProvisionTime for every NodeGroup.
+func NewMockMaxNodeProvisionTimeProvider(maxNodeProvisionTime time.Duration) *staticMockMaxNodeProvisionTimeProvider {
+	return &staticMockMaxNodeProvisionTimeProvider{maxNodeProvisionTime}
+}
+
+type staticMockMaxNodeProvisionTimeProvider struct {
+	staticMaxNodeProvisionTime time.Duration
+}
+
+// GetMaxNodeProvisionTime returns constant MaxNodeProvisionTime value that should be used for every NodeGroup.
+func (p *staticMockMaxNodeProvisionTimeProvider) GetMaxNodeProvisionTime(cloudprovider.NodeGroup) (time.Duration, error) {
+	return p.staticMaxNodeProvisionTime, nil
+}

cluster-autoscaler/context/autoscaling_context.go

@@ -18,6 +18,7 @@ package context
 
 import (
 	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
+	"k8s.io/autoscaler/cluster-autoscaler/clusterstate"
 	"k8s.io/autoscaler/cluster-autoscaler/clusterstate/utils"
 	"k8s.io/autoscaler/cluster-autoscaler/config"
 	"k8s.io/autoscaler/cluster-autoscaler/core/scaledown"
@@ -60,6 +61,8 @@ type AutoscalingContext struct {
 	ScaleDownActuator scaledown.Actuator
 	// RemainingPdbTracker tracks the remaining pod disruption budget
 	RemainingPdbTracker pdb.RemainingPdbTracker
+	// ClusterStateRegistry tracks the health of the node groups and pending scale-ups and scale-downs
+	ClusterStateRegistry *clusterstate.ClusterStateRegistry
 }
 
 // AutoscalingKubeClients contains all Kubernetes API clients,
@@ -105,7 +108,9 @@ func NewAutoscalingContext(
 	estimatorBuilder estimator.EstimatorBuilder,
 	processorCallbacks processor_callbacks.ProcessorCallbacks,
 	debuggingSnapshotter debuggingsnapshot.DebuggingSnapshotter,
-	remainingPdbTracker pdb.RemainingPdbTracker) *AutoscalingContext {
+	remainingPdbTracker pdb.RemainingPdbTracker,
+	clusterStateRegistry *clusterstate.ClusterStateRegistry,
+) *AutoscalingContext {
 	return &AutoscalingContext{
 		AutoscalingOptions:     options,
 		CloudProvider:          cloudProvider,
@@ -117,6 +122,7 @@ func NewAutoscalingContext(
 		ProcessorCallbacks:     processorCallbacks,
 		DebuggingSnapshotter:   debuggingSnapshotter,
 		RemainingPdbTracker:    remainingPdbTracker,
+		ClusterStateRegistry:   clusterStateRegistry,
 	}
 }