Introduce LocalSSDSizeProvider interface for GCE

cluster-autoscaler/cloudprovider/externalgrpc/examples/external-grpc-cloud-provider-service/main.go

@@ -29,6 +29,7 @@ import (
 	cloudBuilder "k8s.io/autoscaler/cluster-autoscaler/cloudprovider/builder"
 	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/externalgrpc/examples/external-grpc-cloud-provider-service/wrapper"
 	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/externalgrpc/protos"
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/config"
 	kube_flag "k8s.io/component-base/cli/flag"
 	klog "k8s.io/klog/v2"
@@ -121,7 +122,8 @@ func main() {
 		NodeGroups:             *nodeGroupsFlag,
 		ClusterName:            *clusterName,
 		GCEOptions: config.GCEOptions{
-			ConcurrentRefreshes: 1,
+			ConcurrentRefreshes:      1,
+			LocalSSDDiskSizeProvider: localssdsize.NewSimpleLocalSSDProvider(),
 		},
 		UserAgent: "user-agent",
 	}

cluster-autoscaler/cloudprovider/gce/gce_cloud_provider.go

@@ -378,12 +378,12 @@ func BuildGCE(opts config.AutoscalingOptions, do cloudprovider.NodeGroupDiscover
 		defer config.Close()
 	}
 
-	manager, err := CreateGceManager(config, do, opts.Regional, opts.GCEOptions.ConcurrentRefreshes, opts.UserAgent, opts.GCEOptions.DomainUrl, opts.GCEOptions.MigInstancesMinRefreshWaitTime)
+	manager, err := CreateGceManager(config, do, opts.GCEOptions.LocalSSDDiskSizeProvider, opts.Regional, opts.GCEOptions.ConcurrentRefreshes, opts.UserAgent, opts.GCEOptions.DomainUrl, opts.GCEOptions.MigInstancesMinRefreshWaitTime)
 	if err != nil {
 		klog.Fatalf("Failed to create GCE Manager: %v", err)
 	}
 
-	pricingModel := NewGcePriceModel(NewGcePriceInfo())
+	pricingModel := NewGcePriceModel(NewGcePriceInfo(), opts.GCEOptions.LocalSSDDiskSizeProvider)
 	provider, err := BuildGceCloudProvider(manager, rl, pricingModel)
 	if err != nil {
 		klog.Fatalf("Failed to create GCE cloud provider: %v", err)

cluster-autoscaler/cloudprovider/gce/gce_manager.go

@@ -31,6 +31,7 @@ import (
 
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/config"
 	"k8s.io/autoscaler/cluster-autoscaler/config/dynamic"
 	"k8s.io/client-go/util/workqueue"
@@ -112,19 +113,22 @@ type gceManagerImpl struct {
 	migInfoProvider MigInfoProvider
 	migLister       MigLister
 
-	location              string
-	projectId             string
-	domainUrl             string
-	templates             *GceTemplateBuilder
-	interrupt             chan struct{}
-	regional              bool
-	explicitlyConfigured  map[GceRef]bool
-	migAutoDiscoverySpecs []migAutoDiscoveryConfig
-	reserved              *GceReserved
+	location                 string
+	projectId                string
+	domainUrl                string
+	templates                *GceTemplateBuilder
+	interrupt                chan struct{}
+	regional                 bool
+	explicitlyConfigured     map[GceRef]bool
+	migAutoDiscoverySpecs    []migAutoDiscoveryConfig
+	reserved                 *GceReserved
+	localSSDDiskSizeProvider localssdsize.LocalSSDSizeProvider
 }
 
 // CreateGceManager constructs GceManager object.
-func CreateGceManager(configReader io.Reader, discoveryOpts cloudprovider.NodeGroupDiscoveryOptions, regional bool, concurrentGceRefreshes int, userAgent, domainUrl string, migInstancesMinRefreshWaitTime time.Duration) (GceManager, error) {
+func CreateGceManager(configReader io.Reader, discoveryOpts cloudprovider.NodeGroupDiscoveryOptions,
+	localSSDDiskSizeProvider localssdsize.LocalSSDSizeProvider,
+	regional bool, concurrentGceRefreshes int, userAgent, domainUrl string, migInstancesMinRefreshWaitTime time.Duration) (GceManager, error) {
 	// Create Google Compute Engine token.
 	var err error
 	tokenSource := google.ComputeTokenSource("")
@@ -181,19 +185,20 @@ func CreateGceManager(configReader io.Reader, discoveryOpts cloudprovider.NodeGr
 	cache := NewGceCache()
 	migLister := NewMigLister(cache)
 	manager := &gceManagerImpl{
-		cache:                  cache,
-		GceService:             gceService,
-		migLister:              migLister,
-		migInfoProvider:        NewCachingMigInfoProvider(cache, migLister, gceService, projectId, concurrentGceRefreshes, migInstancesMinRefreshWaitTime),
-		location:               location,
-		regional:               regional,
-		projectId:              projectId,
-		templates:              &GceTemplateBuilder{},
-		interrupt:              make(chan struct{}),
-		explicitlyConfigured:   make(map[GceRef]bool),
-		concurrentGceRefreshes: concurrentGceRefreshes,
-		reserved:               &GceReserved{},
-		domainUrl:              domainUrl,
+		cache:                    cache,
+		GceService:               gceService,
+		migLister:                migLister,
+		migInfoProvider:          NewCachingMigInfoProvider(cache, migLister, gceService, projectId, concurrentGceRefreshes, migInstancesMinRefreshWaitTime),
+		location:                 location,
+		regional:                 regional,
+		projectId:                projectId,
+		templates:                &GceTemplateBuilder{},
+		interrupt:                make(chan struct{}),
+		explicitlyConfigured:     make(map[GceRef]bool),
+		concurrentGceRefreshes:   concurrentGceRefreshes,
+		reserved:                 &GceReserved{},
+		domainUrl:                domainUrl,
+		localSSDDiskSizeProvider: localSSDDiskSizeProvider,
 	}
 
 	if err := manager.fetchExplicitMigs(discoveryOpts.NodeGroupSpecs); err != nil {
@@ -603,7 +608,7 @@ func (m *gceManagerImpl) GetMigTemplateNode(mig Mig) (*apiv1.Node, error) {
 	if err != nil {
 		return nil, err
 	}
-	return m.templates.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, machineType.CPU, machineType.Memory, nil, m.reserved)
+	return m.templates.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, machineType.CPU, machineType.Memory, nil, m.reserved, m.localSSDDiskSizeProvider)
 }
 
 // parseMIGAutoDiscoverySpecs returns any provided NodeGroupAutoDiscoverySpecs

cluster-autoscaler/cloudprovider/gce/gce_price_model.go

@@ -22,6 +22,7 @@ import (
 	"time"
 
 	apiv1 "k8s.io/api/core/v1"
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/gpu"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/units"
 
@@ -30,13 +31,15 @@ import (
 
 // GcePriceModel implements PriceModel interface for GCE.
 type GcePriceModel struct {
-	PriceInfo PriceInfo
+	PriceInfo            PriceInfo
+	localSSDSizeProvider localssdsize.LocalSSDSizeProvider
 }
 
 // NewGcePriceModel gets a new instance of GcePriceModel
-func NewGcePriceModel(info PriceInfo) *GcePriceModel {
+func NewGcePriceModel(info PriceInfo, localSSDSizeProvider localssdsize.LocalSSDSizeProvider) *GcePriceModel {
 	return &GcePriceModel{
-		PriceInfo: info,
+		PriceInfo:            info,
+		localSSDSizeProvider: localSSDSizeProvider,
 	}
 }
 
@@ -55,27 +58,26 @@ const DefaultBootDiskSizeGB = 100
 func (model *GcePriceModel) NodePrice(node *apiv1.Node, startTime time.Time, endTime time.Time) (float64, error) {
 	price := 0.0
 	basePriceFound := false
-
-	// Base instance price
+	machineType := ""
 	if node.Labels != nil {
-		if machineType, found := getInstanceTypeFromLabels(node.Labels); found {
-			priceMapToUse := model.PriceInfo.InstancePrices()
-			if hasPreemptiblePricing(node) {
-				priceMapToUse = model.PriceInfo.PreemptibleInstancePrices()
-			}
-			if basePricePerHour, found := priceMapToUse[machineType]; found {
-				price = basePricePerHour * getHours(startTime, endTime)
-				basePriceFound = true
-			} else {
-				klog.Warningf("Pricing information not found for instance type %v; will fallback to default pricing", machineType)
-			}
+		if _machineType, found := getInstanceTypeFromLabels(node.Labels); found {
+			machineType = _machineType
 		}
 	}
+	// Base instance price
+	priceMapToUse := model.PriceInfo.InstancePrices()
+	if hasPreemptiblePricing(node) {
+		priceMapToUse = model.PriceInfo.PreemptibleInstancePrices()
+	}
+	if basePricePerHour, found := priceMapToUse[machineType]; found {
+		price = basePricePerHour * getHours(startTime, endTime)
+		basePriceFound = true
+	} else {
+		klog.Warningf("Pricing information not found for instance type %v; will fallback to default pricing", machineType)
+	}
 	if !basePriceFound {
-		if machineType, found := getInstanceTypeFromLabels(node.Labels); found {
-			price = model.getBasePrice(node.Status.Capacity, machineType, startTime, endTime)
-			price = price * model.getPreemptibleDiscount(node)
-		}
+		price = model.getBasePrice(node.Status.Capacity, machineType, startTime, endTime)
+		price = price * model.getPreemptibleDiscount(node)
 	}
 
 	// Ephemeral Storage
@@ -86,7 +88,7 @@ func (model *GcePriceModel) NodePrice(node *apiv1.Node, startTime time.Time, end
 		if hasPreemptiblePricing(node) {
 			localSsdPrice = model.PriceInfo.SpotLocalSsdPricePerHour()
 		}
-		price += localSsdCount * float64(LocalSSDDiskSizeInGiB) * localSsdPrice * getHours(startTime, endTime)
+		price += localSsdCount * float64(model.localSSDSizeProvider.SSDSizeInGiB(machineType)) * localSsdPrice * getHours(startTime, endTime)
 	}
 
 	// Boot disk price

cluster-autoscaler/cloudprovider/gce/gce_price_model_test.go

@@ -24,6 +24,7 @@ import (
 
 	apiv1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/gpu"
 	. "k8s.io/autoscaler/cluster-autoscaler/utils/test"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/units"
@@ -63,7 +64,10 @@ func testNode(t *testing.T, nodeName string, instanceType string, millicpu int64
 func testNodeEphemeralStorage(t *testing.T, nodeName string, isEphemeralStorageLocalSsd bool, localSsdCount int, bootDiskType string, bootDiskSize int, isSpot bool) *apiv1.Node {
 	node := testNode(t, nodeName, "", 8000, 30*units.GiB, "", 0, false, isSpot)
 	if isEphemeralStorageLocalSsd {
-		AddEphemeralStorageToNode(node, int64(localSsdCount)*LocalSSDDiskSizeInGiB)
+		simpleLocalSSDProvider := localssdsize.NewSimpleLocalSSDProvider()
+		machineType := ""
+		ssdSize := simpleLocalSSDProvider.SSDSizeInGiB(machineType)
+		AddEphemeralStorageToNode(node, int64(localSsdCount)*int64(ssdSize))
 	} else {
 		AddEphemeralStorageToNode(node, int64(bootDiskSize))
 	}
@@ -218,7 +222,7 @@ func TestGetNodePrice(t *testing.T) {
 
 	for tn, tc := range cases {
 		t.Run(tn, func(t *testing.T) {
-			model := NewGcePriceModel(NewGcePriceInfo())
+			model := NewGcePriceModel(NewGcePriceInfo(), localssdsize.NewSimpleLocalSSDProvider())
 			now := time.Now()
 
 			price1, err := model.NodePrice(tc.cheaperNode, now, now.Add(time.Hour))
@@ -237,7 +241,7 @@ func TestGetPodPrice(t *testing.T) {
 	pod2 := BuildTestPodWithEphemeralStorage("a2", 2*100, 2*500*units.MiB, 2*100*units.GiB)
 	pod3 := BuildTestPodWithEphemeralStorage("a2", 2*100, 2*500*units.MiB, 100*units.GiB)
 
-	model := NewGcePriceModel(NewGcePriceInfo())
+	model := NewGcePriceModel(NewGcePriceInfo(), localssdsize.NewSimpleLocalSSDProvider())
 	now := time.Now()
 
 	price1, err := model.PodPrice(pod1, now, now.Add(time.Hour))

cluster-autoscaler/cloudprovider/gce/localssdsize/local_ssd_size_provider.go

@@ -0,0 +1,46 @@
+/*
+Copyright 2024 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 localssdsize
+
+// LocalSSDSizeProvider contains methods to calculate local ssd disk size for GCE based on some input parameters (e.g. machine type name)
+type LocalSSDSizeProvider interface {
+	// Computes local ssd disk size in GiB based on machine type name
+	SSDSizeInGiB(string) uint64
+}
+
+// localSSDDiskSizeInGiB is the size of each local SSD in GiB
+// (cf. https://cloud.google.com/compute/docs/disks/local-ssd)
+const localSSDDiskSizeInGiB = uint64(375)
+
+// SimpleLocalSSDProvider implements LocalSSDSizeProvider
+// It always returns a constant size
+type SimpleLocalSSDProvider struct {
+	ssdDiskSize uint64
+}
+
+// NewSimpleLocalSSDProvider creates an instance of SimpleLocalSSDProvider with `LocalSSDDiskSizeInGiB` as the disk size and returns a pointer to it
+func NewSimpleLocalSSDProvider() LocalSSDSizeProvider {
+	return &SimpleLocalSSDProvider{
+		ssdDiskSize: localSSDDiskSizeInGiB,
+	}
+}
+
+// SSDSizeInGiB Returns a constant disk size in GiB
+// First parameter is not used and added to conform to the interface `LocalSSDSizeProvider`
+func (lsp *SimpleLocalSSDProvider) SSDSizeInGiB(_ string) uint64 {
+	return lsp.ssdDiskSize
+}

cluster-autoscaler/cloudprovider/gce/templates.go

@@ -30,6 +30,7 @@ import (
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/gpu"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/units"
 	"k8s.io/klog/v2"
@@ -38,10 +39,6 @@ import (
 // GceTemplateBuilder builds templates for GCE nodes.
 type GceTemplateBuilder struct{}
 
-// LocalSSDDiskSizeInGiB is the size of each local SSD in GiB
-// (cf. https://cloud.google.com/compute/docs/disks/local-ssd)
-const LocalSSDDiskSizeInGiB = 375
-
 // These annotations are used internally only to store information in node temlate and use it later in CA, the actuall nodes won't have these annotations.
 const (
 	// LocalSsdCountAnnotation is the annotation for number of attached local SSDs to the node.
@@ -159,7 +156,7 @@ func (t *GceTemplateBuilder) MigOsInfo(migId string, kubeEnv KubeEnv) (MigOsInfo
 }
 
 // BuildNodeFromTemplate builds node from provided GCE template.
-func (t *GceTemplateBuilder) BuildNodeFromTemplate(mig Mig, migOsInfo MigOsInfo, template *gce.InstanceTemplate, kubeEnv KubeEnv, cpu int64, mem int64, pods *int64, reserved OsReservedCalculator) (*apiv1.Node, error) {
+func (t *GceTemplateBuilder) BuildNodeFromTemplate(mig Mig, migOsInfo MigOsInfo, template *gce.InstanceTemplate, kubeEnv KubeEnv, cpu int64, mem int64, pods *int64, reserved OsReservedCalculator, localSSDSizeProvider localssdsize.LocalSSDSizeProvider) (*apiv1.Node, error) {
 
 	if template.Properties == nil {
 		return nil, fmt.Errorf("instance template %s has no properties", template.Name)
@@ -191,7 +188,8 @@ func (t *GceTemplateBuilder) BuildNodeFromTemplate(mig Mig, migOsInfo MigOsInfo,
 	}
 	ephemeralStorageLocalSsdCount := ephemeralStorageLocalSSDCount(kubeEnv)
 	if err == nil && ephemeralStorageLocalSsdCount > 0 {
-		ephemeralStorage, err = getEphemeralStorageOnLocalSsd(localSsdCount, ephemeralStorageLocalSsdCount)
+		localSSDDiskSize := localSSDSizeProvider.SSDSizeInGiB(template.Properties.MachineType)
+		ephemeralStorage, err = getEphemeralStorageOnLocalSsd(localSsdCount, ephemeralStorageLocalSsdCount, int64(localSSDDiskSize))
 	}
 	if err != nil {
 		return nil, fmt.Errorf("could not fetch ephemeral storage from instance template: %v", err)
@@ -293,11 +291,11 @@ func getLocalSsdCount(instanceProperties *gce.InstanceProperties) (int64, error)
 	return count, nil
 }
 
-func getEphemeralStorageOnLocalSsd(localSsdCount, ephemeralStorageLocalSsdCount int64) (int64, error) {
+func getEphemeralStorageOnLocalSsd(localSsdCount, ephemeralStorageLocalSsdCount, localSSDDiskSizeInGiB int64) (int64, error) {
 	if localSsdCount < ephemeralStorageLocalSsdCount {
 		return 0, fmt.Errorf("actual local SSD count is lower than ephemeral_storage_local_ssd_count")
 	}
-	return ephemeralStorageLocalSsdCount * LocalSSDDiskSizeInGiB * units.GiB, nil
+	return ephemeralStorageLocalSsdCount * localSSDDiskSizeInGiB * units.GiB, nil
 }
 
 // isBootDiskEphemeralStorageWithInstanceTemplateDisabled will allow bypassing Disk Size of Boot Disk from being

cluster-autoscaler/cloudprovider/gce/templates_test.go

@@ -23,6 +23,7 @@ import (
 	"strings"
 	"testing"
 
+	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	"k8s.io/autoscaler/cluster-autoscaler/config"
 	gpuUtils "k8s.io/autoscaler/cluster-autoscaler/utils/gpu"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/units"
@@ -271,7 +272,8 @@ func TestBuildNodeFromTemplateSetsResources(t *testing.T) {
 				assert.Error(t, err)
 				return
 			}
-			node, err := tb.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, tc.physicalCpu, tc.physicalMemory, tc.pods, &GceReserved{})
+			localSSDDiskSize := localssdsize.NewSimpleLocalSSDProvider()
+			node, err := tb.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, tc.physicalCpu, tc.physicalMemory, tc.pods, &GceReserved{}, localSSDDiskSize)
 			if tc.expectedNodeTemplateErr {
 				assert.Error(t, err)
 			} else {
@@ -297,7 +299,7 @@ func TestBuildNodeFromTemplateSetsResources(t *testing.T) {
 				// specifying physicalEphemeralStorageGiB in the testCase struct
 				physicalEphemeralStorageGiB := tc.bootDiskSizeGiB
 				if tc.ephemeralStorageLocalSSDCount > 0 {
-					physicalEphemeralStorageGiB = tc.ephemeralStorageLocalSSDCount * LocalSSDDiskSizeInGiB
+					physicalEphemeralStorageGiB = tc.ephemeralStorageLocalSSDCount * int64(localSSDDiskSize.SSDSizeInGiB(template.Properties.MachineType))
 				} else if tc.isEphemeralStorageBlocked {
 					physicalEphemeralStorageGiB = 0
 				}
@@ -1465,7 +1467,8 @@ func TestBuildNodeFromTemplateArch(t *testing.T) {
 			if gotErr != nil {
 				t.Fatalf("MigOsInfo unexpected error: %v", gotErr)
 			}
-			gotNode, gotErr := tb.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, 16, 128, nil, &GceReserved{})
+			localSSDDiskSize := localssdsize.NewSimpleLocalSSDProvider()
+			gotNode, gotErr := tb.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, 16, 128, nil, &GceReserved{}, localSSDDiskSize)
 			if gotErr != nil {
 				t.Fatalf("BuildNodeFromTemplate unexpected error: %v", gotErr)
 			}

cluster-autoscaler/config/autoscaling_options.go

@@ -19,6 +19,7 @@ package config
 import (
 	"time"
 
+	gce_localssdsize "k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
 	kubelet_config "k8s.io/kubernetes/pkg/kubelet/apis/config"
 	scheduler_config "k8s.io/kubernetes/pkg/scheduler/apis/config"
 )
@@ -63,6 +64,8 @@ type GCEOptions struct {
 	MigInstancesMinRefreshWaitTime time.Duration
 	// DomainUrl is the GCE url used to make calls to GCE API.
 	DomainUrl string
+	// LocalSSDDiskSizeProvider provides local ssd disk size based on machine type
+	LocalSSDDiskSizeProvider gce_localssdsize.LocalSSDSizeProvider
 }
 
 const (