本文分析的是kubernetes 删除资源对象的策略
具体源码在$GOPATH/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/apis/meta/v1/types.go文件中
策略
DeleteOptions 结构体属性如下
type DeletionPropagation string
const (
// Orphans the dependents.
DeletePropagationOrphan DeletionPropagation = "Orphan"
// Deletes the object from the key-value store, the garbage collector will
// delete the dependents in the background.
DeletePropagationBackground DeletionPropagation = "Background"
// The object exists in the key-value store until the garbage collector
// deletes all the dependents whose ownerReference.blockOwnerDeletion=true
// from the key-value store. API sever will put the "foregroundDeletion"
// finalizer on the object, and sets its deletionTimestamp. This policy is
// cascading, i.e., the dependents will be deleted with Foreground.
DeletePropagationForeground DeletionPropagation = "Foreground"
)
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// DeleteOptions may be provided when deleting an API object.
type DeleteOptions struct {
TypeMeta `json:",inline"`
// The duration in seconds before the object should be deleted. Value must be non-negative integer.
// The value zero indicates delete immediately. If this value is nil, the default grace period for the
// specified type will be used.
// Defaults to a per object value if not specified. zero means delete immediately.
// +optional
GracePeriodSeconds *int64 `json:"gracePeriodSeconds,omitempty" protobuf:"varint,1,opt,name=gracePeriodSeconds"`
// Must be fulfilled before a deletion is carried out. If not possible, a 409 Conflict status will be
// returned.
// +optional
Preconditions *Preconditions `json:"preconditions,omitempty" protobuf:"bytes,2,opt,name=preconditions"`
// Deprecated: please use the PropagationPolicy, this field will be deprecated in 1.7.
// Should the dependent objects be orphaned. If true/false, the "