binding

Documentation

Overview

Package binding contains the middle layer logic for bindings. Bindings are objects containing instructions for how a pod ought to be bound to a host. This allows a registry object which supports this action (ApplyBinding) to be served through an apiserver.

Index

• type MockRegistry
  • func (mr MockRegistry) ApplyBinding(ctx api.Context, binding *api.Binding) error
• type REST
  • func NewREST(bindingRegistry Registry) *REST
  • func (b *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error)
  • func (*REST) Delete(ctx api.Context, id string) (<-chan apiserver.RESTResult, error)
  • func (*REST) Get(ctx api.Context, id string) (runtime.Object, error)
  • func (*REST) List(ctx api.Context, label, field labels.Selector) (runtime.Object, error)
  • func (*REST) New() runtime.Object
  • func (b *REST) Update(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error)
• type Registry

Types

type MockRegistry

type MockRegistry struct {
	OnApplyBinding func(binding *api.Binding) error
}

MockRegistry can be used for testing.

func (MockRegistry) ApplyBinding

func (mr MockRegistry) ApplyBinding(ctx api.Context, binding *api.Binding) error

type REST

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

REST implements the RESTStorage interface for bindings. When bindings are written, it changes the location of the affected pods. This information is eventually reflected in the pod's CurrentState.Host field.

func NewREST

func NewREST(bindingRegistry Registry) *REST

NewREST creates a new REST backed by the given bindingRegistry.

func (*REST) Create

func (b *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error)

Create attempts to make the assignment indicated by the binding it recieves.

func (*REST) Delete

func (*REST) Delete(ctx api.Context, id string) (<-chan apiserver.RESTResult, error)

Delete returns an error because bindings are write-only objects.

func (*REST) Get

func (*REST) Get(ctx api.Context, id string) (runtime.Object, error)

Get returns an error because bindings are write-only objects.

func (*REST) List

func (*REST) List(ctx api.Context, label, field labels.Selector) (runtime.Object, error)

List returns an error because bindings are write-only objects.

func (*REST) New

func (*REST) New() runtime.Object

New returns a new binding object fit for having data unmarshalled into it.

func (*REST) Update

func (b *REST) Update(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error)

Update returns an error-- this object may not be updated.

type Registry

type Registry interface {
	// ApplyBinding should apply the binding. That is, it should actually
	// assign or place pod binding.PodID on machine binding.Host.
	ApplyBinding(ctx api.Context, binding *api.Binding) error
}

Registry contains the functions needed to support a BindingStorage.