v1alpha1

type BlockedScaling struct {
	Reason        BlockingReason `json:"reason,omitempty"`
	ScalingStatus `json:"scalingStatus,omitempty"`
}

type BlockingReason string

type ChangeParams struct {
	// Value is the absolute value of the scaling
	// +optional
	Value *string `json:"value,omitempty"`
	// Percentage is the percentage of currently allocated value to be used for scaling
	// +optional
	Percentage *int32 `json:"percentage,omitempty"`
}

type HpaSpec struct {
	// Selector is a label query that should match HPA.
	// Must match in order to be controlled.
	// If empty, defaulted to labels on HPA template.
	// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors
	// +optional
	Selector *metav1.LabelSelector `json:"selector,omitempty"`

	// Deploy defines whether the HPA is deployed or not
	Deploy bool `json:"deploy,omitempty"`

	// ScaleUp defines the parameters for scale up
	ScaleUp ScaleType `json:"scaleUp,omitempty"`

	// ScaleDown defines the parameters for scale down
	ScaleDown ScaleType `json:"scaleDown,omitempty"`

	// Template is the object that describes the HPA that will be created.
	// +optional
	Template HpaTemplate `json:"template,omitempty"`
}

type HpaStatus struct {
	CurrentReplicas int32 `json:"currentReplicas,omitempty"`
	DesiredReplicas int32 `json:"desiredReplicas,omitempty"`
}

type HpaTemplate struct {
	// Metadata of the pods created from this template.
	// +kubebuilder:validation:XPreserveUnknownFields
	// +optional
	metav1.ObjectMeta `json:"metadata,omitempty"`

	// Spec defines the behavior of a HPA.
	// +optional
	Spec HpaTemplateSpec `json:"spec,omitempty"`
}

type HpaTemplateSpec struct {
	// minReplicas is the lower limit for the number of replicas to which the autoscaler can scale down.
	// It defaults to 1 pod.
	// +optional
	MinReplicas *int32 `json:"minReplicas,omitempty" protobuf:"varint,1,opt,name=minReplicas"`

	// maxReplicas is the upper limit for the number of replicas to which the autoscaler can scale up.
	// It cannot be less that minReplicas.
	MaxReplicas int32 `json:"maxReplicas" protobuf:"varint,2,opt,name=maxReplicas"`

	// metrics contains the specifications for which to use to calculate the
	// desired replica count (the maximum replica count across all metrics will
	// be used).  The desired replica count is calculated multiplying the
	// ratio between the target value and the current value by the current
	// number of pods.  Ergo, metrics used must decrease as the pod count is
	// increased, and vice-versa.  See the individual metric source types for
	// more information about how each type of metric must respond.
	// If not set, the default metric will be set to 80% average CPU utilization.
	// +optional
	Metrics []autoscaling.MetricSpec `json:"metrics,omitempty" protobuf:"bytes,3,rep,name=metrics"`
}

type Hvpa struct {
	metav1.TypeMeta   `json:",inline"`
	metav1.ObjectMeta `json:"metadata,omitempty"`

	Spec   HvpaSpec   `json:"spec,omitempty"`
	Status HvpaStatus `json:"status,omitempty"`
}

type HvpaList struct {
	metav1.TypeMeta `json:",inline"`
	metav1.ListMeta `json:"metadata,omitempty"`
	Items           []Hvpa `json:"items"`
}

type HvpaSpec struct {
	// Replicas is the number of replicas of target resource
	Replicas *int32 `json:"replicas,omitempty"`

	// Hpa defines the spec of HPA
	Hpa HpaSpec `json:"hpa,omitempty"`

	// Vpa defines the spec of VPA
	Vpa VpaSpec `json:"vpa,omitempty"`

	// WeightBasedScalingIntervals defines the intervals of replica counts, and the weights for scaling a deployment vertically
	// If there are overlapping intervals, then the vpaWeight will be taken from the first matching interval
	WeightBasedScalingIntervals []WeightBasedScalingInterval `json:"weightBasedScalingIntervals,omitempty"`

	// TargetRef points to the controller managing the set of pods for the autoscaler to control
	TargetRef *autoscaling.CrossVersionObjectReference `json:"targetRef"`

	// MaintenanceTimeWindow contains information about the time window for maintenance operations.
	// +optional
	MaintenanceTimeWindow *MaintenanceTimeWindow `json:"maintenanceTimeWindow,omitempty"`
}

type HvpaStatus struct {
	// Replicas is the number of replicas of the target resource.
	Replicas *int32 `json:"replicas,omitempty"`
	// TargetSelector is the string form of the label selector of HPA. This is required for HPA to work with scale subresource.
	TargetSelector *string `json:"targetSelector,omitempty"`
	// Current HPA UpdatePolicy set in the spec
	HpaScaleUpUpdatePolicy *UpdatePolicy `json:"hpaScaleUpUpdatePolicy,omitempty"`
	// Current HPA UpdatePolicy set in the spec
	HpaScaleDownUpdatePolicy *UpdatePolicy `json:"hpaScaleDownUpdatePolicy,omitempty"`
	// Current VPA UpdatePolicy set in the spec
	VpaScaleUpUpdatePolicy *UpdatePolicy `json:"vpaScaleUpUpdatePolicy,omitempty"`
	// Current VPA UpdatePolicy set in the spec
	VpaScaleDownUpdatePolicy *UpdatePolicy `json:"vpaScaleDownUpdatePolicy,omitempty"`

	HpaWeight int32 `json:"hpaWeight,omitempty"`
	VpaWeight int32 `json:"vpaWeight,omitempty"`

	// Override scale up stabilization window
	OverrideScaleUpStabilization bool `json:"overrideScaleUpStabilization,omitempty"`

	LastBlockedScaling []*BlockedScaling `json:"lastBlockedScaling,omitempty"`
	LastScaling        ScalingStatus     `json:"lastScaling,omitempty"`

	// LastError has details of any errors that occurred
	LastError *LastError `json:"lastError,omitempty"`
}

type LastError struct {
	// Description of the error
	Description string `json:"description,omitempty"`

	// Time at which the error occurred
	LastUpdateTime metav1.Time `json:"lastUpdateTime,omitempty"`

	// LastOperation is the type of operation for which error occurred
	LastOperation string `json:"lastOperation,omitempty"`
}

type MaintenanceTimeWindow struct {
	// Begin is the beginning of the time window in the format HHMMSS+ZONE, e.g. "220000+0100".
	Begin string `json:"begin"`
	// End is the end of the time window in the format HHMMSS+ZONE, e.g. "220000+0100".
	End string `json:"end"`
}

type ScaleParams struct {
	// Scale parameters for CPU
	CPU ChangeParams `json:"cpu,omitempty"`
	// Scale parameters for memory
	Memory ChangeParams `json:"memory,omitempty"`
	// Scale patameters for replicas
	Replicas ChangeParams `json:"replicas,omitempty"`
}

type ScaleType struct {
	// Describes the rules on when changes are applied.
	// If not specified, all fields in the `UpdatePolicy` are set to their
	// default values.
	// +optional
	UpdatePolicy UpdatePolicy `json:"updatePolicy,omitempty"`

	// MinChange is the minimum change in the resource on which HVPA acts
	// HVPA uses minimum of the Value and Percentage value
	MinChange ScaleParams `json:"minChange,omitempty"`

	// StabilizationDuration defines the minimum delay in minutes between 2 consecutive scale operations
	// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h"
	StabilizationDuration *string `json:"stabilizationDuration,omitempty"`
}

type ScalingStatus struct {
	LastScaleTime *metav1.Time                        `json:"lastScaleTime,omitempty"`
	HpaStatus     HpaStatus                           `json:"hpaStatus,omitempty" protobuf:"bytes,1,opt,name=hpaStatus"`
	VpaStatus     vpa_api.VerticalPodAutoscalerStatus `json:"vpaStatus,omitempty" protobuf:"bytes,2,opt,name=vpaStatus"`
}

type UpdatePolicy struct {
	// Controls when autoscaler applies changes to the resources.
	// The default is 'Auto'.
	// +optional
	UpdateMode *string `json:"updateMode,omitempty" protobuf:"bytes,1,opt,name=updateMode"`
}

type VpaSpec struct {
	// Selector is a label query that should match VPA.
	// Must match in order to be controlled.
	// If empty, defaulted to labels on VPA template.
	// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors
	// +optional
	Selector *metav1.LabelSelector `json:"selector,omitempty"`

	// Deploy defines whether the VPA is deployed or not
	Deploy bool `json:"deploy,omitempty"`

	// ScaleUp defines the parameters for scale up
	ScaleUp ScaleType `json:"scaleUp,omitempty"`

	// ScaleDown defines the parameters for scale down
	ScaleDown ScaleType `json:"scaleDown,omitempty"`

	// Template is the object that describes the VPA that will be created.
	// +optional
	Template VpaTemplate `json:"template,omitempty"`

	// LimitsRequestsGapScaleParams is the scaling thresholds for limits
	LimitsRequestsGapScaleParams ScaleParams `json:"limitsRequestsGapScaleParams,omitempty"`
}

type VpaTemplate struct {
	// Metadata of the pods created from this template.
	// +kubebuilder:validation:XPreserveUnknownFields
	// +optional
	metav1.ObjectMeta `json:"metadata,omitempty"`

	// Spec defines the behavior of a VPA.
	// +optional
	Spec VpaTemplateSpec `json:"spec,omitempty"`
}

type VpaTemplateSpec struct {
	// Controls how the autoscaler computes recommended resources.
	// The resource policy may be used to set constraints on the recommendations
	// for individual containers. If not specified, the autoscaler computes recommended
	// resources for all containers in the pod, without additional constraints.
	// +optional
	ResourcePolicy *vpa_api.PodResourcePolicy `json:"resourcePolicy,omitempty" protobuf:"bytes,2,opt,name=resourcePolicy"`
}

type WeightBasedScalingInterval struct {
	// VpaWeight defines the weight (in percentage) to be given to VPA's recommendationd for the interval of number of replicas provided
	// +kubebuilder:validation:Minimum=0
	// +kubebuilder:validation:Maximum=100
	VpaWeight int32 `json:"vpaWeight,omitempty"`
	// StartReplicaCount is the number of replicas from which VpaWeight is applied to VPA scaling
	// If this field is not provided, it will default to minReplicas of HPA
	// +optional
	StartReplicaCount int32 `json:"startReplicaCount,omitempty"`
	// LastReplicaCount is the number of replicas till which VpaWeight is applied to VPA scaling
	// If this field is not provided, it will default to maxReplicas of HPA
	// +optional
	LastReplicaCount int32 `json:"lastReplicaCount,omitempty"`
}