Package controllerutil contains utility functions for working with and implementing Controllers.
func SetControllerReference ¶
SetControllerReference sets owner as a Controller OwnerReference on owned. This is used for garbage collection of the owned object and for reconciling the owner object on changes to owned (with a Watch + EnqueueRequestForOwner). Since only one OwnerReference can be a controller, it returns an error if there is another OwnerReference with Controller flag set.
type AlreadyOwnedError ¶
AlreadyOwnedError is an error returned if the object you are trying to assign a controller reference is already owned by another controller Object is the subject and Owner is the reference for the current owner
MutateFn is a function which mutates the existing object into it's desired state.
type OperationResult ¶
type OperationResult string
OperationResult is the action result of a CreateOrUpdate call
const ( // OperationResultNone means that the resource has not been changed OperationResultNone OperationResult = "unchanged" // OperationResultCreated means that a new resource is created OperationResultCreated OperationResult = "created" // OperationResultUpdated means that an existing resource is updated OperationResultUpdated OperationResult = "updated" )
func CreateOrUpdate ¶
CreateOrUpdate creates or updates the given object obj in the Kubernetes cluster. The object's desired state should be reconciled with the existing state using the passed in ReconcileFn. obj must be a struct pointer so that obj can be updated with the content returned by the Server.
It returns the executed operation and an error.
This example creates or updates an existing deployment