app

package
v0.28.7 Latest Latest
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 Go to latest Published: Feb 14, 2024 License: Apache-2.0 Imports: 62 Imported by: 82

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

View Source 
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"
)

Variables

View Source 
var (
	// ControllersDisabledByDefault is the controller disabled default when starting cloud-controller managers.
	ControllersDisabledByDefault = sets.NewString()

	// AllWebhooks represents the list of all webhook options configured in
	// this package.  This is empty because no webhooks are currently
	// configured in this package.
	AllWebhooks = []string{}

	// DisabledByDefaultWebhooks represents the list of webhooks which must be
	// explicitly enabled. This is empty because no webhooks are currently
	// configured in this package.
	DisabledByDefaultWebhooks = []string{}
)
View Source 
var DefaultInitFuncConstructors = map[string]ControllerInitFuncConstructor{

	names.CloudNodeController: {
		InitContext: ControllerInitContext{
			ClientName: "node-controller",
		},
		Constructor: StartCloudNodeControllerWrapper,
	},
	names.CloudNodeLifecycleController: {
		InitContext: ControllerInitContext{
			ClientName: "node-controller",
		},
		Constructor: StartCloudNodeLifecycleControllerWrapper,
	},
	names.ServiceLBController: {
		InitContext: ControllerInitContext{
			ClientName: "service-controller",
		},
		Constructor: StartServiceControllerWrapper,
	},
	names.NodeRouteController: {
		InitContext: ControllerInitContext{
			ClientName: "route-controller",
		},
		Constructor: StartRouteControllerWrapper,
	},
}

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

View Source 
var WebhooksDisabledByDefault = sets.NewString()

WebhooksDisabledByDefault is the webhooks disabled default when starting cloud-controller managers.

Functions

func ConstructControllerInitializers added in v0.20.6 

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

ConstructControllerInitializers is a map of controller name(as defined by controllers flag in https://kubernetes.io/docs/reference/command-line-tools-reference/kube-controller-manager/#options) to their InitFuncConstructor. paired to their InitFunc. This allows for structured downstream composition and subdivision.

func ControllerNames added in v0.20.6 

func ControllerNames(controllerInitFuncConstructors map[string]ControllerInitFuncConstructor) []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, controllerInitFuncConstructors map[string]ControllerInitFuncConstructor, controllerAliases map[string]string, additionalFlags cliflag.NamedFlagSets, stopCh <-chan struct{}) *cobra.Command

NewCloudControllerManagerCommand creates a *cobra.Command object with default parameters controllerInitFuncConstructors is a map of controller name(as defined by controllers flag in https://kubernetes.io/docs/reference/command-line-tools-reference/kube-controller-manager/#options) to their InitFuncConstructor. additionalFlags provides controller specific flags to be included in the complete set of controller manager flags

func NewWebhookHandlers added in v0.27.0 

func NewWebhookHandlers(webhookConfigs map[string]WebhookConfig, completedConfig *config.CompletedConfig, cloud cloudprovider.Interface) map[string]WebhookHandler

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, webhooks map[string]WebhookHandler,
	stopCh <-chan struct{}) error

Run runs the ExternalCMServer. This should never exit.

func WebhookNames added in v0.27.0 

func WebhookNames(webhooks map[string]WebhookConfig) []string

Types

type CommandBuilder added in v0.27.0 

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

func NewBuilder added in v0.27.0 

func NewBuilder() *CommandBuilder

func (*CommandBuilder) AddFlags added in v0.27.0 

func (cb *CommandBuilder) AddFlags(additionalFlags cliflag.NamedFlagSets)

func (*CommandBuilder) BuildCommand added in v0.27.0 

func (cb *CommandBuilder) BuildCommand() *cobra.Command

func (*CommandBuilder) RegisterController added in v0.27.0 

func (cb *CommandBuilder) RegisterController(name string, constructor ControllerInitFuncConstructor, aliases map[string]string)

func (*CommandBuilder) RegisterDefaultControllers added in v0.27.0 

func (cb *CommandBuilder) RegisterDefaultControllers()

func (*CommandBuilder) RegisterWebhook added in v0.27.0 

func (cb *CommandBuilder) RegisterWebhook(name string, config WebhookConfig)

func (*CommandBuilder) SetCloudInitializer added in v0.27.0 

func (cb *CommandBuilder) SetCloudInitializer(cloudInitializer InitCloudFunc)

func (*CommandBuilder) SetCmdName added in v0.27.0 

func (cb *CommandBuilder) SetCmdName(name string)

func (*CommandBuilder) SetLongDesc added in v0.27.0 

func (cb *CommandBuilder) SetLongDesc(long string)

func (*CommandBuilder) SetOptions added in v0.27.0 

func (cb *CommandBuilder) SetOptions(options *options.CloudControllerManagerOptions)

func (*CommandBuilder) SetProviderDefaults added in v0.27.0 

func (cb *CommandBuilder) SetProviderDefaults(defaults options.ProviderDefaults)

SetProviderDefaults can be called to change the default values for some options when a flag is not set

func (*CommandBuilder) SetStopChannel added in v0.27.0 

func (cb *CommandBuilder) SetStopChannel(stopCh <-chan struct{})

type ControllerInitContext added in v0.23.0 

type ControllerInitContext struct {
	ClientName string
}

type ControllerInitFuncConstructor added in v0.23.0 

type ControllerInitFuncConstructor struct {
	InitContext ControllerInitContext
	Constructor InitFuncConstructor
}

type InitCloudFunc added in v0.20.6 

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

InitCloudFunc is used to initialize cloud

type InitFunc 

type InitFunc func(ctx context.Context, controllerContext genericcontrollermanager.ControllerContext) (controller controller.Interface, enabled bool, err error)

InitFunc is used to launch a particular controller. It returns a controller that can optionally implement other interfaces so that the controller manager can support the requested features. The returned controller may be nil, which will be considered an anonymous controller that requests no additional features from the controller manager. Any error returned will cause the controller process to `Fatal` The bool indicates whether the controller was enabled.

func StartCloudNodeControllerWrapper 

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

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

func StartCloudNodeLifecycleControllerWrapper added in v0.23.0 

func StartCloudNodeLifecycleControllerWrapper(initContext ControllerInitContext, completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc

StartCloudNodeLifecycleControllerWrapper is used to take cloud config as input and start cloud node lifecycle controller

func StartRouteControllerWrapper added in v0.23.0 

func StartRouteControllerWrapper(initContext ControllerInitContext, completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc

StartRouteControllerWrapper is used to take cloud config as input and start route controller

func StartServiceControllerWrapper added in v0.23.0 

func StartServiceControllerWrapper(initContext ControllerInitContext, completedConfig *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface) InitFunc

StartServiceControllerWrapper is used to take cloud config as input and start service controller

type InitFuncConstructor added in v0.20.6 

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

InitFuncConstructor is used to construct InitFunc

type WebhookConfig added in v0.27.0 

type WebhookConfig struct {
	Path             string
	AdmissionHandler func(*admissionv1.AdmissionRequest) (*admissionv1.AdmissionResponse, error)
}

type WebhookHandler added in v0.27.0 

type WebhookHandler struct {
	Name string
	Path string
	http.Handler
	AdmissionHandler func(*admissionv1.AdmissionRequest) (*admissionv1.AdmissionResponse, error)
	CompletedConfig  *config.CompletedConfig
	Cloud            cloudprovider.Interface
}

func (WebhookHandler) ServeHTTP added in v0.27.0 

func (h WebhookHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)

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