policy

type Eviction struct {
	metav1.TypeMeta

	// ObjectMeta describes the pod that is being evicted.
	// +optional
	metav1.ObjectMeta

	// DeleteOptions may be provided
	// +optional
	DeleteOptions *metav1.DeleteOptions
}

type PodDisruptionBudget struct {
	metav1.TypeMeta
	// +optional
	metav1.ObjectMeta

	// Specification of the desired behavior of the PodDisruptionBudget.
	// +optional
	Spec PodDisruptionBudgetSpec
	// Most recently observed status of the PodDisruptionBudget.
	// +optional
	Status PodDisruptionBudgetStatus
}

type PodDisruptionBudgetList struct {
	metav1.TypeMeta
	// +optional
	metav1.ListMeta
	Items []PodDisruptionBudget
}

type PodDisruptionBudgetSpec struct {
	// An eviction is allowed if at least "minAvailable" pods selected by
	// "selector" will still be available after the eviction, i.e. even in the
	// absence of the evicted pod.  So for example you can prevent all voluntary
	// evictions by specifying "100%".
	// +optional
	MinAvailable *intstr.IntOrString

	// Label query over pods whose evictions are managed by the disruption
	// budget.
	// +optional
	Selector *metav1.LabelSelector

	// An eviction is allowed if at most "maxUnavailable" pods selected by
	// "selector" are unavailable after the eviction, i.e. even in absence of
	// the evicted pod. For example, one can prevent all voluntary evictions
	// by specifying 0. This is a mutually exclusive setting with "minAvailable".
	// +optional
	MaxUnavailable *intstr.IntOrString
}

type PodDisruptionBudgetStatus struct {
	// Most recent generation observed when updating this PDB status. PodDisruptionsAllowed and other
	// status informatio is valid only if observedGeneration equals to PDB's object generation.
	// +optional
	ObservedGeneration int64

	// DisruptedPods contains information about pods whose eviction was
	// processed by the API server eviction subresource handler but has not
	// yet been observed by the PodDisruptionBudget controller.
	// A pod will be in this map from the time when the API server processed the
	// eviction request to the time when the pod is seen by PDB controller
	// as having been marked for deletion (or after a timeout). The key in the map is the name of the pod
	// and the value is the time when the API server processed the eviction request. If
	// the deletion didn't occur and a pod is still there it will be removed from
	// the list automatically by PodDisruptionBudget controller after some time.
	// If everything goes smooth this map should be empty for the most of the time.
	// Large number of entries in the map may indicate problems with pod deletions.
	DisruptedPods map[string]metav1.Time

	// Number of pod disruptions that are currently allowed.
	PodDisruptionsAllowed int32

	// current number of healthy pods
	CurrentHealthy int32

	// minimum desired number of healthy pods
	DesiredHealthy int32

	// total number of pods counted by this disruption budget
	ExpectedPods int32
}