apply

Documentation

Index

• Constants
• type APIApplicator
  • func NewAPIApplicator(c client.Client) *APIApplicator
  • func (a *APIApplicator) Apply(ctx context.Context, desired client.Object, ao ...ApplyOption) error
• type Applicator
• type ApplyOption
  • func MakeCustomApplyOption(f func(existing, desired client.Object) error) ApplyOption
  • func MustBeControllableBy(u types.UID) ApplyOption
  • func MustBeControlledByApp(app *v1beta1.Application) ApplyOption
  • func NotUpdateRenderHashEqual() ApplyOption

Constants

const (
	// LabelRenderHash is the label that record the hash value of the rendering resource.
	LabelRenderHash = "oam.dev/render-hash"
)

Types

type APIApplicator

type APIApplicator struct {
	// contains filtered or unexported fields
}

APIApplicator implements Applicator

func NewAPIApplicator

func NewAPIApplicator(c client.Client) *APIApplicator

NewAPIApplicator creates an Applicator that applies state to an object or creates the object if not exist.

func (*APIApplicator) Apply

func (a *APIApplicator) Apply(ctx context.Context, desired client.Object, ao ...ApplyOption) error

Apply applies new state to an object or create it if not exist

type Applicator

type Applicator interface {
	Apply(context.Context, client.Object, ...ApplyOption) error
}

Applicator applies new state to an object or create it if not exist. It uses the same mechanism as `kubectl apply`, that is, for each resource being applied, computing a three-way diff merge in client side based on its current state, modified stated, and last-applied-state which is tracked through an specific annotation. If the resource doesn't exist before, Apply will create it.

type ApplyOption

type ApplyOption func(act *applyAction, existing, desired client.Object) error

ApplyOption is called before applying state to the object. ApplyOption is still called even if the object does NOT exist. If the object does not exist, `existing` will be assigned as `nil`. nolint: golint

func MakeCustomApplyOption

func MakeCustomApplyOption(f func(existing, desired client.Object) error) ApplyOption

MakeCustomApplyOption let user can generate applyOption that restrict change apply action.

func MustBeControllableBy

func MustBeControllableBy(u types.UID) ApplyOption

MustBeControllableBy requires that the new object is controllable by an object with the supplied UID. An object is controllable if its controller reference includes the supplied UID.

func MustBeControlledByApp

func MustBeControlledByApp(app *v1beta1.Application) ApplyOption

MustBeControlledByApp requires that the new object is controllable by versioned resourcetracker

func NotUpdateRenderHashEqual

func NotUpdateRenderHashEqual() ApplyOption

NotUpdateRenderHashEqual if the render hash of new object equal to the old hash, should not apply.