app

Documentation

Overview

Package app implements a server that runs a set of active components. This includes node controllers, service and route controller, and so on.

Index

• Constants
• Variables
• func ConstructControllerInitializers(initFuncConstructors map[string]InitFuncConstructor, ...) map[string]InitFunc
• func ControllerNames(initFuncConstructors map[string]InitFuncConstructor) []string
• func CreateControllerContext(s *cloudcontrollerconfig.CompletedConfig, ...) (genericcontrollermanager.ControllerContext, error)
• func GetAvailableResources(clientBuilder clientbuilder.ControllerClientBuilder) (map[schema.GroupVersionResource]bool, error)
• func NewCloudControllerManagerCommand(s *options.CloudControllerManagerOptions, cloudInitializer InitCloudFunc, ...) *cobra.Command
• func ResyncPeriod(c *cloudcontrollerconfig.CompletedConfig) func() time.Duration
• func Run(c *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, ...) error
• type InitCloudFunc
• type InitFunc
  • func StartCloudNodeControllerWrapper(completedConfig *cloudcontrollerconfig.CompletedConfig, ...) InitFunc
• type InitFuncConstructor

Constants

const (
	// ControllerStartJitter is the jitter value used when starting controller managers.
	ControllerStartJitter = 1.0
	// ConfigzName is the name used for register cloud-controller manager /configz, same with GroupName.
	ConfigzName = "cloudcontrollermanager.config.k8s.io"
)

const (
	// IPv6DualStack enables ipv6 dual stack feature
	// Original copy from pkg/features/kube_features.go
	IPv6DualStack = "IPv6DualStack"
)

Variables

var ControllersDisabledByDefault = sets.NewString()

ControllersDisabledByDefault is the controller disabled default when starting cloud-controller managers.

var DefaultInitFuncConstructors = map[string]InitFuncConstructor{
	"cloud-node":           StartCloudNodeControllerWrapper,
	"cloud-node-lifecycle": startCloudNodeLifecycleControllerWrapper,
	"service":              startServiceControllerWrapper,
	"route":                startRouteControllerWrapper,
}

DefaultInitFuncConstructors is a map of default named controller groups paired with InitFuncConstructor

Functions

func ConstructControllerInitializers

func ConstructControllerInitializers(initFuncConstructors map[string]InitFuncConstructor, completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) map[string]InitFunc

ConstructControllerInitializers is a private map of named controller groups (you can start more than one in an init func) paired to their InitFunc. This allows for structured downstream composition and subdivision.

func ControllerNames

func ControllerNames(initFuncConstructors map[string]InitFuncConstructor) []string

ControllerNames indicate the default controller we are known.

func CreateControllerContext

func CreateControllerContext(s *cloudcontrollerconfig.CompletedConfig, clientBuilder clientbuilder.ControllerClientBuilder, stop <-chan struct{}) (genericcontrollermanager.ControllerContext, error)

CreateControllerContext creates a context struct containing references to resources needed by the controllers such as the cloud provider and clientBuilder. rootClientBuilder is only used for the shared-informers client and token controller.

func GetAvailableResources

func GetAvailableResources(clientBuilder clientbuilder.ControllerClientBuilder) (map[schema.GroupVersionResource]bool, error)

GetAvailableResources gets the map which contains all available resources of the apiserver TODO: In general, any controller checking this needs to be dynamic so users don't have to restart their controller manager if they change the apiserver. Until we get there, the structure here needs to be exposed for the construction of a proper ControllerContext.

func NewCloudControllerManagerCommand

func NewCloudControllerManagerCommand(s *options.CloudControllerManagerOptions, cloudInitializer InitCloudFunc, initFuncConstructor map[string]InitFuncConstructor, additionalFlags cliflag.NamedFlagSets, stopCh <-chan struct{}) *cobra.Command

NewCloudControllerManagerCommand creates a *cobra.Command object with default parameters initFuncConstructor is a map of named controller groups (you can start more than one in an init func) paired to their InitFuncConstructor. additionalFlags provides controller specific flags to be included in the complete set of controller manager flags

func ResyncPeriod

func ResyncPeriod(c *cloudcontrollerconfig.CompletedConfig) func() time.Duration

ResyncPeriod returns a function which generates a duration each time it is invoked; this is so that multiple controllers don't get into lock-step and all hammer the apiserver with list requests simultaneously.

func Run

func Run(c *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface, controllerInitializers map[string]InitFunc, stopCh <-chan struct{}) error

Run runs the ExternalCMServer. This should never exit.

Types

type InitCloudFunc

type InitCloudFunc func(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface

InitCloudFunc is used to initialize cloud

type InitFunc

type InitFunc func(ctx genericcontrollermanager.ControllerContext) (debuggingHandler http.Handler, enabled bool, err error)

InitFunc is used to launch a particular controller. It may run additional "should I activate checks". Any error returned will cause the controller process to `Fatal` The bool indicates whether the controller was enabled.

func StartCloudNodeControllerWrapper

func StartCloudNodeControllerWrapper(completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc

StartCloudNodeControllerWrapper is used to take cloud cofig as input and start cloud node controller

type InitFuncConstructor

type InitFuncConstructor func(completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc

InitFuncConstructor is used to construct InitFunc