CollisionCount should have type int32 across controllers that use it for collision avoidance

pkg/apis/apps/fuzzer/fuzzer.go

@@ -44,7 +44,7 @@ var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
 				s.Status.ObservedGeneration = new(int64)
 			}
 			if s.Status.CollisionCount == nil {
-				s.Status.CollisionCount = new(int64)
+				s.Status.CollisionCount = new(int32)
 			}
 		},
 	}

pkg/apis/apps/types.go

@@ -192,7 +192,7 @@ type StatefulSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ControllerRevision.
 	// +optional
-	CollisionCount *int64
+	CollisionCount *int32
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object

pkg/apis/apps/v1beta2/conversion.go

@@ -244,7 +244,7 @@ func Convert_v1beta2_StatefulSetStatus_To_apps_StatefulSetStatus(in *appsv1beta2
 	out.CurrentRevision = in.CurrentRevision
 	out.UpdateRevision = in.UpdateRevision
 	if in.CollisionCount != nil {
-		out.CollisionCount = new(int64)
+		out.CollisionCount = new(int32)
 		*out.CollisionCount = *in.CollisionCount
 	}
 	return nil
@@ -261,7 +261,7 @@ func Convert_apps_StatefulSetStatus_To_v1beta2_StatefulSetStatus(in *apps.Statef
 	out.CurrentRevision = in.CurrentRevision
 	out.UpdateRevision = in.UpdateRevision
 	if in.CollisionCount != nil {
-		out.CollisionCount = new(int64)
+		out.CollisionCount = new(int32)
 		*out.CollisionCount = *in.CollisionCount
 	}
 	return nil

pkg/apis/apps/validation/validation_test.go

@@ -302,7 +302,8 @@ func TestValidateStatefulSet(t *testing.T) {
 }
 
 func TestValidateStatefulSetStatus(t *testing.T) {
-	minusOne := int64(-1)
+	observedGenerationMinusOne := int64(-1)
+	collisionCountMinusOne := int32(-1)
 	tests := []struct {
 		name               string
 		replicas           int32
@@ -310,7 +311,7 @@ func TestValidateStatefulSetStatus(t *testing.T) {
 		currentReplicas    int32
 		updatedReplicas    int32
 		observedGeneration *int64
-		collisionCount     *int64
+		collisionCount     *int32
 		expectedErr        bool
 	}{
 		{
@@ -359,7 +360,7 @@ func TestValidateStatefulSetStatus(t *testing.T) {
 			readyReplicas:      3,
 			currentReplicas:    2,
 			updatedReplicas:    1,
-			observedGeneration: &minusOne,
+			observedGeneration: &observedGenerationMinusOne,
 			expectedErr:        true,
 		},
 		{
@@ -368,7 +369,7 @@ func TestValidateStatefulSetStatus(t *testing.T) {
 			readyReplicas:   3,
 			currentReplicas: 2,
 			updatedReplicas: 1,
-			collisionCount:  &minusOne,
+			collisionCount:  &collisionCountMinusOne,
 			expectedErr:     true,
 		},
 		{

pkg/apis/extensions/types.go

@@ -345,7 +345,7 @@ type DeploymentStatus struct {
 	// field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ReplicaSet.
 	// +optional
-	CollisionCount *int64
+	CollisionCount *int32
 }
 
 type DeploymentConditionType string
@@ -519,7 +519,7 @@ type DaemonSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to
 	// create the name for the newest ControllerRevision.
 	// +optional
-	CollisionCount *int64
+	CollisionCount *int32
 }
 
 // +genclient

pkg/apis/extensions/validation/validation.go

@@ -95,7 +95,7 @@ func ValidateDaemonSetStatusUpdate(ds, oldDS *extensions.DaemonSet) field.ErrorL
 	allErrs := apivalidation.ValidateObjectMetaUpdate(&ds.ObjectMeta, &oldDS.ObjectMeta, field.NewPath("metadata"))
 	allErrs = append(allErrs, validateDaemonSetStatus(&ds.Status, field.NewPath("status"))...)
 	if isDecremented(ds.Status.CollisionCount, oldDS.Status.CollisionCount) {
-		value := int64(0)
+		value := int32(0)
 		if ds.Status.CollisionCount != nil {
 			value = *ds.Status.CollisionCount
 		}
@@ -311,7 +311,7 @@ func ValidateDeploymentStatus(status *extensions.DeploymentStatus, fldPath *fiel
 	allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.AvailableReplicas), fldPath.Child("availableReplicas"))...)
 	allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.UnavailableReplicas), fldPath.Child("unavailableReplicas"))...)
 	if status.CollisionCount != nil {
-		allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(*status.CollisionCount, fldPath.Child("collisionCount"))...)
+		allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(*status.CollisionCount), fldPath.Child("collisionCount"))...)
 	}
 	msg := "cannot be greater than status.replicas"
 	if status.UpdatedReplicas > status.Replicas {
@@ -342,7 +342,7 @@ func ValidateDeploymentStatusUpdate(update, old *extensions.Deployment) field.Er
 	fldPath := field.NewPath("status")
 	allErrs = append(allErrs, ValidateDeploymentStatus(&update.Status, fldPath)...)
 	if isDecremented(update.Status.CollisionCount, old.Status.CollisionCount) {
-		value := int64(0)
+		value := int32(0)
 		if update.Status.CollisionCount != nil {
 			value = *update.Status.CollisionCount
 		}
@@ -352,7 +352,7 @@ func ValidateDeploymentStatusUpdate(update, old *extensions.Deployment) field.Er
 }
 
 // TODO: Move in "k8s.io/kubernetes/pkg/api/validation"
-func isDecremented(update, old *int64) bool {
+func isDecremented(update, old *int32) bool {
 	if update == nil && old != nil {
 		return true
 	}

pkg/apis/extensions/validation/validation_test.go

@@ -1238,6 +1238,7 @@ func int64p(i int) *int64 {
 }
 
 func TestValidateDeploymentStatus(t *testing.T) {
+	collisionCount := int32(-3)
 	tests := []struct {
 		name string
 
@@ -1246,7 +1247,7 @@ func TestValidateDeploymentStatus(t *testing.T) {
 		readyReplicas      int32
 		availableReplicas  int32
 		observedGeneration int64
-		collisionCount     *int64
+		collisionCount     *int32
 
 		expectedErr bool
 	}{
@@ -1347,7 +1348,7 @@ func TestValidateDeploymentStatus(t *testing.T) {
 			name:               "invalid collisionCount",
 			replicas:           3,
 			observedGeneration: 1,
-			collisionCount:     int64p(-3),
+			collisionCount:     &collisionCount,
 			expectedErr:        true,
 		},
 	}
@@ -1371,6 +1372,8 @@ func TestValidateDeploymentStatus(t *testing.T) {
 }
 
 func TestValidateDeploymentStatusUpdate(t *testing.T) {
+	collisionCount := int32(1)
+	otherCollisionCount := int32(2)
 	tests := []struct {
 		name string
 
@@ -1384,24 +1387,24 @@ func TestValidateDeploymentStatusUpdate(t *testing.T) {
 				CollisionCount: nil,
 			},
 			to: extensions.DeploymentStatus{
-				CollisionCount: int64p(1),
+				CollisionCount: &collisionCount,
 			},
 			expectedErr: false,
 		},
 		{
 			name: "stable: valid update",
 			from: extensions.DeploymentStatus{
-				CollisionCount: int64p(1),
+				CollisionCount: &collisionCount,
 			},
 			to: extensions.DeploymentStatus{
-				CollisionCount: int64p(1),
+				CollisionCount: &collisionCount,
 			},
 			expectedErr: false,
 		},
 		{
 			name: "unset: invalid update",
 			from: extensions.DeploymentStatus{
-				CollisionCount: int64p(1),
+				CollisionCount: &collisionCount,
 			},
 			to: extensions.DeploymentStatus{
 				CollisionCount: nil,
@@ -1411,10 +1414,10 @@ func TestValidateDeploymentStatusUpdate(t *testing.T) {
 		{
 			name: "decrease: invalid update",
 			from: extensions.DeploymentStatus{
-				CollisionCount: int64p(2),
+				CollisionCount: &otherCollisionCount,
 			},
 			to: extensions.DeploymentStatus{
-				CollisionCount: int64p(1),
+				CollisionCount: &collisionCount,
 			},
 			expectedErr: true,
 		},

pkg/controller/controller_utils.go

@@ -1030,14 +1030,14 @@ func WaitForCacheSync(controllerName string, stopCh <-chan struct{}, cacheSyncs
 }
 
 // ComputeHash returns a hash value calculated from pod template and a collisionCount to avoid hash collision
-func ComputeHash(template *v1.PodTemplateSpec, collisionCount *int64) uint32 {
+func ComputeHash(template *v1.PodTemplateSpec, collisionCount *int32) uint32 {
 	podTemplateSpecHasher := fnv.New32a()
 	hashutil.DeepHashObject(podTemplateSpecHasher, *template)
 
 	// Add collisionCount in the hash if it exists.
 	if collisionCount != nil {
 		collisionCountBytes := make([]byte, 8)
-		binary.LittleEndian.PutUint64(collisionCountBytes, uint64(*collisionCount))
+		binary.LittleEndian.PutUint32(collisionCountBytes, uint32(*collisionCount))
 		podTemplateSpecHasher.Write(collisionCountBytes)
 	}
 

pkg/controller/controller_utils_test.go

@@ -453,23 +453,26 @@ func int64P(num int64) *int64 {
 }
 
 func TestComputeHash(t *testing.T) {
+	collisionCount := int32(1)
+	otherCollisionCount := int32(2)
+	maxCollisionCount := int32(math.MaxInt32)
 	tests := []struct {
 		name                string
 		template            *v1.PodTemplateSpec
-		collisionCount      *int64
-		otherCollisionCount *int64
+		collisionCount      *int32
+		otherCollisionCount *int32
 	}{
 		{
 			name:                "simple",
 			template:            &v1.PodTemplateSpec{},
-			collisionCount:      int64P(1),
-			otherCollisionCount: int64P(2),
+			collisionCount:      &collisionCount,
+			otherCollisionCount: &otherCollisionCount,
 		},
 		{
 			name:                "using math.MaxInt64",
 			template:            &v1.PodTemplateSpec{},
 			collisionCount:      nil,
-			otherCollisionCount: int64P(int64(math.MaxInt64)),
+			otherCollisionCount: &maxCollisionCount,
 		},
 	}
 

pkg/controller/daemon/update.go

@@ -368,7 +368,7 @@ func (dsc *DaemonSetsController) snapshot(ds *extensions.DaemonSet, revision int
 			return nil, getErr
 		}
 		if currDS.Status.CollisionCount == nil {
-			currDS.Status.CollisionCount = new(int64)
+			currDS.Status.CollisionCount = new(int32)
 		}
 		*currDS.Status.CollisionCount++
 		_, updateErr := dsc.kubeClient.ExtensionsV1beta1().DaemonSets(ds.Namespace).UpdateStatus(currDS)

pkg/controller/deployment/sync.go

@@ -160,7 +160,7 @@ func (dc *DeploymentController) rsAndPodsWithHashKeySynced(d *extensions.Deploym
 // 1. Add hash label to the rs's pod template, and make sure the controller sees this update so that no orphaned pods will be created
 // 2. Add hash label to all pods this rs owns, wait until replicaset controller reports rs.Status.FullyLabeledReplicas equal to the desired number of replicas
 // 3. Add hash label to the rs's label and selector
-func (dc *DeploymentController) addHashKeyToRSAndPods(rs *extensions.ReplicaSet, podList *v1.PodList, collisionCount *int64) (*extensions.ReplicaSet, error) {
+func (dc *DeploymentController) addHashKeyToRSAndPods(rs *extensions.ReplicaSet, podList *v1.PodList, collisionCount *int32) (*extensions.ReplicaSet, error) {
 	// If the rs already has the new hash label in its selector, it's done syncing
 	if labelsutil.SelectorHasLabel(rs.Spec.Selector, extensions.DefaultDeploymentUniqueLabelKey) {
 		return rs, nil
@@ -349,7 +349,7 @@ func (dc *DeploymentController) getNewReplicaSet(d *extensions.Deployment, rsLis
 		// and requeue the Deployment.
 		if !isEqual {
 			if d.Status.CollisionCount == nil {
-				d.Status.CollisionCount = new(int64)
+				d.Status.CollisionCount = new(int32)
 			}
 			preCollisionCount := *d.Status.CollisionCount
 			*d.Status.CollisionCount++

pkg/controller/deployment/util/replicaset_util.go

@@ -70,7 +70,7 @@ func UpdateRSWithRetries(rsClient unversionedextensions.ReplicaSetInterface, rsL
 }
 
 // GetReplicaSetHash returns the pod template hash of a ReplicaSet's pod template space
-func GetReplicaSetHash(rs *extensions.ReplicaSet, uniquifier *int64) (string, error) {
+func GetReplicaSetHash(rs *extensions.ReplicaSet, uniquifier *int32) (string, error) {
 	template, err := scheme.Scheme.DeepCopy(rs.Spec.Template)
 	if err != nil {
 		return "", err

staging/src/k8s.io/api/apps/v1beta1/types.go

@@ -244,7 +244,7 @@ type StatefulSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ControllerRevision.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
@@ -445,7 +445,7 @@ type DeploymentStatus struct {
 	// field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ReplicaSet.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
 }
 
 type DeploymentConditionType string

staging/src/k8s.io/api/apps/v1beta2/types.go

@@ -251,7 +251,7 @@ type StatefulSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ControllerRevision.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
@@ -425,7 +425,7 @@ type DeploymentStatus struct {
 	// field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ReplicaSet.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
 }
 
 type DeploymentConditionType string
@@ -598,7 +598,7 @@ type DaemonSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to
 	// create the name for the newest ControllerRevision.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
 }
 
 // +genclient

staging/src/k8s.io/api/extensions/v1beta1/types.go

@@ -345,7 +345,7 @@ type DeploymentStatus struct {
 	// field as a collision avoidance mechanism when it needs to create the name for the
 	// newest ReplicaSet.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,8,opt,name=collisionCount"`
 }
 
 type DeploymentConditionType string
@@ -524,7 +524,7 @@ type DaemonSetStatus struct {
 	// uses this field as a collision avoidance mechanism when it needs to
 	// create the name for the newest ControllerRevision.
 	// +optional
-	CollisionCount *int64 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
+	CollisionCount *int32 `json:"collisionCount,omitempty" protobuf:"varint,9,opt,name=collisionCount"`
 }
 
 // +genclient

test/e2e/apps/deployment.go

@@ -1449,7 +1449,7 @@ func testDeploymentHashCollisionAvoidance(f *framework.Framework) {
 			return false, nil
 		}
 		framework.Logf(spew.Sprintf("deployment status: %#v", d.Status))
-		return d.Status.CollisionCount != nil && *d.Status.CollisionCount == int64(1), nil
+		return d.Status.CollisionCount != nil && *d.Status.CollisionCount == int32(1), nil
 	}); err != nil {
 		framework.Failf("Failed to increment collision counter for deployment %q: %v", deploymentName, err)
 	}