Documentation

Overview

Package manager is required to create Controllers and provides shared dependencies such as clients, caches, schemes, etc. Controllers must be started by calling Manager.Start.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Manager

type Manager interface {
	// Add will set reqeusted dependencies on the component, and cause the component to be
	// started when Start is called.  Add will inject any dependencies for which the argument
	// implements the inject interface - e.g. inject.Client
	Add(Runnable) error

	// SetFields will set any dependencies on an object for which the object has implemented the inject
	// interface - e.g. inject.Client.
	SetFields(interface{}) error

	// Start starts all registered Controllers and blocks until the Stop channel is closed.
	// Returns an error if there is an error starting any controller.
	Start(<-chan struct{}) error

	// GetConfig returns an initialized Config
	GetConfig() *rest.Config

	// GetScheme returns and initialized Scheme
	GetScheme() *runtime.Scheme

	// GetAdmissionDecoder returns the runtime.Decoder based on the scheme.
	GetAdmissionDecoder() types.Decoder

	// GetClient returns a client configured with the Config
	GetClient() client.Client

	// GetFieldIndexer returns a client.FieldIndexer configured with the client
	GetFieldIndexer() client.FieldIndexer

	// GetCache returns a cache.Cache
	GetCache() cache.Cache

	// GetRecorder returns a new EventRecorder for the provided name
	GetRecorder(name string) record.EventRecorder

	// GetRESTMapper returns a RESTMapper
	GetRESTMapper() meta.RESTMapper
}

Manager initializes shared dependencies such as Caches and Clients, and provides them to Runnables. A Manager is required to create Controllers.

func New

func New(config *rest.Config, options Options) (Manager, error)

New returns a new Manager for creating Controllers.

Example

This example creates a new Manager that can be used with controller.New to create Controllers.

Output:

type Options

type Options struct {
	// Scheme is the scheme used to resolve runtime.Objects to GroupVersionKinds / Resources
	// Defaults to the kubernetes/client-go scheme.Scheme
	Scheme *runtime.Scheme

	// MapperProvider provides the rest mapper used to map go types to Kubernetes APIs
	MapperProvider func(c *rest.Config) (meta.RESTMapper, error)

	// SyncPeriod determines the minimum frequency at which watched resources are
	// reconciled. A lower period will correct entropy more quickly, but reduce
	// responsiveness to change if there are many watched resources. Change this
	// value only if you know what you are doing. Defaults to 10 hours if unset.
	SyncPeriod *time.Duration

	// LeaderElection determines whether or not to use leader election when
	// starting the manager.
	LeaderElection bool

	// LeaderElectionNamespace determines the namespace in which the leader
	// election configmap will be created.
	LeaderElectionNamespace string

	// LeaderElectionID determines the name of the configmap that leader election
	// will use for holding the leader lock.
	LeaderElectionID string

	// Namespace if specified restricts the manager's cache to watch objects in the desired namespace
	// Defaults to all namespaces
	// Note: If a namespace is specified then controllers can still Watch for a cluster-scoped resource e.g Node
	// For namespaced resources the cache will only hold objects from the desired namespace.
	Namespace string
	// contains filtered or unexported fields
}

Options are the arguments for creating a new Manager

type Runnable

type Runnable interface {
	// Start starts running the component.  The component will stop running when the channel is closed.
	// Start blocks until the channel is closed or an error occurs.
	Start(<-chan struct{}) error
}

Runnable allows a component to be started.

type RunnableFunc

type RunnableFunc func(<-chan struct{}) error

RunnableFunc implements Runnable

func (RunnableFunc) Start

func (r RunnableFunc) Start(s <-chan struct{}) error

Start implements Runnable