Changes to accommodate client-go changes and kube vendor update

to v1.18.0

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

vendor/k8s.io/kubernetes/pkg/apis/autoscaling/annotations.go

@@ -32,3 +32,7 @@ const HorizontalPodAutoscalerConditionsAnnotation = "autoscaling.alpha.kubernete
 // metrics are present.  This is here because it's used by both the v2beta1 defaulting
 // logic, and the pseudo-defaulting done in v1 conversion.
 const DefaultCPUUtilization = 80
+
+// BehaviorSpecsAnnotation is the annotation which holds the HPA constraints specs
+// when converting the `Behavior` field from autoscaling/v2beta2
+const BehaviorSpecsAnnotation = "autoscaling.alpha.kubernetes.io/behavior"

vendor/k8s.io/kubernetes/pkg/apis/autoscaling/types.go

@@ -95,6 +95,90 @@ type HorizontalPodAutoscalerSpec struct {
 	// more information about how each type of metric must respond.
 	// +optional
 	Metrics []MetricSpec
+
+	// behavior configures the scaling behavior of the target
+	// in both Up and Down directions (scaleUp and scaleDown fields respectively).
+	// If not set, the default HPAScalingRules for scale up and scale down are used.
+	// +optional
+	Behavior *HorizontalPodAutoscalerBehavior
+}
+
+// HorizontalPodAutoscalerBehavior configures a scaling behavior for Up and Down direction
+// (scaleUp and scaleDown fields respectively).
+type HorizontalPodAutoscalerBehavior struct {
+	// scaleUp is scaling policy for scaling Up.
+	// If not set, the default value is the higher of:
+	//   * increase no more than 4 pods per 60 seconds
+	//   * double the number of pods per 60 seconds
+	// No stabilization is used.
+	// +optional
+	ScaleUp *HPAScalingRules
+	// scaleDown is scaling policy for scaling Down.
+	// If not set, the default value is to allow to scale down to minReplicas pods, with a
+	// 300 second stabilization window (i.e., the highest recommendation for
+	// the last 300sec is used).
+	// +optional
+	ScaleDown *HPAScalingRules
+}
+
+// ScalingPolicySelect is used to specify which policy should be used while scaling in a certain direction
+type ScalingPolicySelect string
+
+const (
+	// MaxPolicySelect selects the policy with the highest possible change.
+	MaxPolicySelect ScalingPolicySelect = "Max"
+	// MinPolicySelect selects the policy with the lowest possible change.
+	MinPolicySelect ScalingPolicySelect = "Min"
+	// DisabledPolicySelect disables the scaling in this direction.
+	DisabledPolicySelect ScalingPolicySelect = "Disabled"
+)
+
+// HPAScalingRules configures the scaling behavior for one direction.
+// These Rules are applied after calculating DesiredReplicas from metrics for the HPA.
+// They can limit the scaling velocity by specifying scaling policies.
+// They can prevent flapping by specifying the stabilization window, so that the
+// number of replicas is not set instantly, instead, the safest value from the stabilization
+// window is chosen.
+type HPAScalingRules struct {
+	// StabilizationWindowSeconds is the number of seconds for which past recommendations should be
+	// considered while scaling up or scaling down.
+	// StabilizationWindowSeconds must be greater than or equal to zero and less than or equal to 3600 (one hour).
+	// If not set, use the default values:
+	// - For scale up: 0 (i.e. no stabilization is done).
+	// - For scale down: 300 (i.e. the stabilization window is 300 seconds long).
+	// +optional
+	StabilizationWindowSeconds *int32
+	// selectPolicy is used to specify which policy should be used.
+	// If not set, the default value MaxPolicySelect is used.
+	// +optional
+	SelectPolicy *ScalingPolicySelect
+	// policies is a list of potential scaling polices which can used during scaling.
+	// At least one policy must be specified, otherwise the HPAScalingRules will be discarded as invalid
+	// +optional
+	Policies []HPAScalingPolicy
+}
+
+// HPAScalingPolicyType is the type of the policy which could be used while making scaling decisions.
+type HPAScalingPolicyType string
+
+const (
+	// PodsScalingPolicy is a policy used to specify a change in absolute number of pods.
+	PodsScalingPolicy HPAScalingPolicyType = "Pods"
+	// PercentScalingPolicy is a policy used to specify a relative amount of change with respect to
+	// the current number of pods.
+	PercentScalingPolicy HPAScalingPolicyType = "Percent"
+)
+
+// HPAScalingPolicy is a single policy which must hold true for a specified past interval.
+type HPAScalingPolicy struct {
+	// Type is used to specify the scaling policy.
+	Type HPAScalingPolicyType
+	// Value contains the amount of change which is permitted by the policy.
+	// It must be greater than zero
+	Value int32
+	// PeriodSeconds specifies the window of time for which the policy should hold true.
+	// PeriodSeconds must be greater than zero and less than or equal to 1800 (30 min).
+	PeriodSeconds int32
 }
 
 // MetricSourceType indicates the type of metric.

vendor/k8s.io/kubernetes/pkg/apis/autoscaling/zz_generated.deepcopy.go

@@ -77,6 +77,53 @@ func (in *ExternalMetricStatus) DeepCopy() *ExternalMetricStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HPAScalingPolicy) DeepCopyInto(out *HPAScalingPolicy) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HPAScalingPolicy.
+func (in *HPAScalingPolicy) DeepCopy() *HPAScalingPolicy {
+	if in == nil {
+		return nil
+	}
+	out := new(HPAScalingPolicy)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HPAScalingRules) DeepCopyInto(out *HPAScalingRules) {
+	*out = *in
+	if in.StabilizationWindowSeconds != nil {
+		in, out := &in.StabilizationWindowSeconds, &out.StabilizationWindowSeconds
+		*out = new(int32)
+		**out = **in
+	}
+	if in.SelectPolicy != nil {
+		in, out := &in.SelectPolicy, &out.SelectPolicy
+		*out = new(ScalingPolicySelect)
+		**out = **in
+	}
+	if in.Policies != nil {
+		in, out := &in.Policies, &out.Policies
+		*out = make([]HPAScalingPolicy, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HPAScalingRules.
+func (in *HPAScalingRules) DeepCopy() *HPAScalingRules {
+	if in == nil {
+		return nil
+	}
+	out := new(HPAScalingRules)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *HorizontalPodAutoscaler) DeepCopyInto(out *HorizontalPodAutoscaler) {
 	*out = *in
@@ -105,6 +152,32 @@ func (in *HorizontalPodAutoscaler) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *HorizontalPodAutoscalerBehavior) DeepCopyInto(out *HorizontalPodAutoscalerBehavior) {
+	*out = *in
+	if in.ScaleUp != nil {
+		in, out := &in.ScaleUp, &out.ScaleUp
+		*out = new(HPAScalingRules)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.ScaleDown != nil {
+		in, out := &in.ScaleDown, &out.ScaleDown
+		*out = new(HPAScalingRules)
+		(*in).DeepCopyInto(*out)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalPodAutoscalerBehavior.
+func (in *HorizontalPodAutoscalerBehavior) DeepCopy() *HorizontalPodAutoscalerBehavior {
+	if in == nil {
+		return nil
+	}
+	out := new(HorizontalPodAutoscalerBehavior)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *HorizontalPodAutoscalerCondition) DeepCopyInto(out *HorizontalPodAutoscalerCondition) {
 	*out = *in
@@ -171,6 +244,11 @@ func (in *HorizontalPodAutoscalerSpec) DeepCopyInto(out *HorizontalPodAutoscaler
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
+	if in.Behavior != nil {
+		in, out := &in.Behavior, &out.Behavior
+		*out = new(HorizontalPodAutoscalerBehavior)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }