webhook

package
v1.6.1 Latest Latest
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Published: Apr 7, 2020 License: Apache-2.0, MIT Imports: 36 Imported by: 82

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Constants

View Source
const (
	// ModeService is a constant for the webhook mode indicating that the controller is running inside of the Kubernetes cluster it
	// is serving.
	ModeService = "service"
	// ModeURL is a constant for the webhook mode indicating that the controller is running outside of the Kubernetes cluster it
	// is serving. If this is set then a URL is required for configuration.
	ModeURL = "url"
	// ModeURLWithServiceName is a constant for the webhook mode indicating that the controller is running outside of the Kubernetes cluster it
	// is serving but in the same cluster like the kube-apiserver. If this is set then a URL is required for configuration.
	ModeURLWithServiceName = "url-service"
)
View Source
const (
	// TargetSeed defines that the webhook is to be installed in the seed.
	TargetSeed = "seed"
	// TargetShoot defines that the webhook is to be installed in the shoot.
	TargetShoot = "shoot"
)

Variables

This section is empty.

Functions

func AppendUniqueUnit

func AppendUniqueUnit(units *[]extensionsv1alpha1.Unit, unit extensionsv1alpha1.Unit)

AppendUniqueUnit appens a unit only if it does not exist.

func ContainerWithName

func ContainerWithName(containers []corev1.Container, name string) *corev1.Container

ContainerWithName returns the container with the given name if it exists in the given slice, nil otherwise.

func DeserializeCommandLine

func DeserializeCommandLine(s string) []string

DeserializeCommandLine de-serializes the given string to a slice of command line elements by splitting it on white space and the "\" character.

func EnsureAnnotationOrLabel

func EnsureAnnotationOrLabel(annotationOrLabelMap map[string]string, key, value string) map[string]string

EnsureAnnotationOrLabel ensures the given key/value exists in the annotationOrLabelMap map.

func EnsureContainerWithName

func EnsureContainerWithName(items []corev1.Container, item corev1.Container) []corev1.Container

EnsureContainerWithName ensures that a Container with a name equal to the name of the given Container exists in the given slice and is equal to the given Container.

func EnsureEnvVarWithName

func EnsureEnvVarWithName(items []corev1.EnvVar, item corev1.EnvVar) []corev1.EnvVar

EnsureEnvVarWithName ensures that a EnvVar with a name equal to the name of the given EnvVar exists in the given slice and is equal to the given EnvVar.

func EnsureFileWithPath

func EnsureFileWithPath(items []extensionsv1alpha1.File, item extensionsv1alpha1.File) []extensionsv1alpha1.File

EnsureFileWithPath ensures that a file with a path equal to the path of the given file exists in the given slice and is equal to the given file.

func EnsureNoContainerWithName

func EnsureNoContainerWithName(items []corev1.Container, name string) []corev1.Container

EnsureNoContainerWithName ensures that a Container with the given name does not exist in the given slice.

func EnsureNoEnvVarWithName

func EnsureNoEnvVarWithName(items []corev1.EnvVar, name string) []corev1.EnvVar

EnsureNoEnvVarWithName ensures that a EnvVar with the given name does not exist in the given slice.

func EnsureNoPVCWithName

func EnsureNoPVCWithName(items []corev1.PersistentVolumeClaim, name string) []corev1.PersistentVolumeClaim

EnsureNoPVCWithName ensures that a PVC with the given name does not exist in the given slice.

func EnsureNoStringWithPrefix

func EnsureNoStringWithPrefix(items []string, prefix string) []string

EnsureNoStringWithPrefix ensures that a string having the given prefix does not exist in the given slice.

func EnsureNoStringWithPrefixContains

func EnsureNoStringWithPrefixContains(items []string, prefix, value, sep string) []string

EnsureNoStringWithPrefixContains ensures that either a string having the given prefix does not exist in the given slice, or it doesn't contain the given value in a list separated by sep.

func EnsureNoVolumeMountWithName

func EnsureNoVolumeMountWithName(items []corev1.VolumeMount, name string) []corev1.VolumeMount

EnsureNoVolumeMountWithName ensures that a VolumeMount with the given name does not exist in the given slice.

func EnsureNoVolumeWithName

func EnsureNoVolumeWithName(items []corev1.Volume, name string) []corev1.Volume

EnsureNoVolumeWithName ensures that a Volume with the given name does not exist in the given slice.

func EnsurePVCWithName

EnsurePVCWithName ensures that a PVC with a name equal to the name of the given PVC exists in the given slice and is equal to the given PVC.

func EnsureStringWithPrefix

func EnsureStringWithPrefix(items []string, prefix, value string) []string

EnsureStringWithPrefix ensures that a string having the given prefix exists in the given slice with a value equal to prefix + value.

func EnsureStringWithPrefixContains

func EnsureStringWithPrefixContains(items []string, prefix, value, sep string) []string

EnsureStringWithPrefixContains ensures that a string having the given prefix exists in the given slice and contains the given value in a list separated by sep.

func EnsureUnitOption

func EnsureUnitOption(items []*unit.UnitOption, item *unit.UnitOption) []*unit.UnitOption

EnsureUnitOption ensures the given unit option exist in the given slice.

func EnsureVolumeMountWithName

func EnsureVolumeMountWithName(items []corev1.VolumeMount, item corev1.VolumeMount) []corev1.VolumeMount

EnsureVolumeMountWithName ensures that a VolumeMount with a name equal to the name of the given VolumeMount exists in the given slice and is equal to the given VolumeMount.

func EnsureVolumeWithName

func EnsureVolumeWithName(items []corev1.Volume, item corev1.Volume) []corev1.Volume

EnsureVolumeWithName ensures that a Volume with a name equal to the name of the given Volume exists in the given slice and is equal to the given Volume.

func FileWithPath

func FileWithPath(files []extensionsv1alpha1.File, path string) *extensionsv1alpha1.File

FileWithPath returns the file with the given path if it exists in the given slice, nil otherwise.

func GenerateCertificates

func GenerateCertificates(ctx context.Context, mgr manager.Manager, certDir, namespace, name, mode, url string) ([]byte, error)

GenerateCertificates generates the certificates that are required for a webhook. It returns the ca bundle, and it stores the server certificate and key locally on the file system.

func LogMutation

func LogMutation(logger logr.Logger, kind, namespace, name string)

LogMutation provides a log message.

func NewHandler

func NewHandler(mgr manager.Manager, types []runtime.Object, mutator Mutator, logger logr.Logger) (*handler, error)

NewHandler creates a new handler for the given types, using the given mutator, and logger.

func NewHandlerWithShootClient

func NewHandlerWithShootClient(mgr manager.Manager, types []runtime.Object, mutator MutatorWithShootClient, logger logr.Logger) (*handlerShootClient, error)

NewHandlerWithShootClient creates a new handler for the given types, using the given mutator, and logger.

func PVCWithName

PVCWithName returns the PersistentVolumeClaim with the given name if it exists in the given slice, nil otherwise.

func RegisterWebhooks

func RegisterWebhooks(ctx context.Context, mgr manager.Manager, namespace, providerName string, port int, mode, url string, caBundle []byte, webhooks []*Webhook) (webhooksToRegisterSeed []admissionregistrationv1beta1.MutatingWebhook, webhooksToRegisterShoot []admissionregistrationv1beta1.MutatingWebhook, err error)

RegisterWebhooks registers the given webhooks in the Kubernetes cluster targeted by the provided manager.

func SerializeCommandLine

func SerializeCommandLine(command []string, n int, sep string) string

SerializeCommandLine serializes the given command line elements slice to a string by joining the first n+1 elements with a space " ", and all subsequent elements with the given separator.

func StringIndex

func StringIndex(items []string, value string) int

StringIndex returns the index of the first occurrence of the given string in the given slice, or -1 if not found.

func StringWithPrefixIndex

func StringWithPrefixIndex(items []string, prefix string) int

StringWithPrefixIndex returns the index of the first occurrence of a string having the given prefix in the given slice, or -1 if not found.

func UnitOptionWithSectionAndName

func UnitOptionWithSectionAndName(opts []*unit.UnitOption, section, name string) *unit.UnitOption

UnitOptionWithSectionAndName returns the unit option with the given section and name if it exists in the given slice, nil otherwise.

func UnitWithName

func UnitWithName(units []extensionsv1alpha1.Unit, name string) *extensionsv1alpha1.Unit

UnitWithName returns the unit with the given name if it exists in the given slice, nil otherwise.

Types

type FactoryAggregator

type FactoryAggregator []func(manager.Manager) (*Webhook, error)

FactoryAggregator aggregates various Factory functions.

func NewFactoryAggregator

func NewFactoryAggregator(m []func(manager.Manager) (*Webhook, error)) FactoryAggregator

NewFactoryAggregator creates a new FactoryAggregator and registers the given functions.

func (*FactoryAggregator) Register

func (a *FactoryAggregator) Register(f func(manager.Manager) (*Webhook, error))

Register registers the given functions in this builder.

func (*FactoryAggregator) Webhooks

func (a *FactoryAggregator) Webhooks(mgr manager.Manager) ([]*Webhook, error)

Webhooks calls all factories with the given managers and returns all created webhooks. As soon as there is an error creating a webhook, the error is returned immediately.

type Mutator

type Mutator interface {
	// Mutate validates and if needed mutates the given object.
	// "old" is optional and it must always be checked for nil.
	Mutate(ctx context.Context, new, old runtime.Object) error
}

Mutator validates and if needed mutates objects.

type MutatorWithShootClient

type MutatorWithShootClient interface {
	// Mutate validates and if needed mutates the given object.
	// "old" is optional and it must always be checked for nil.
	Mutate(ctx context.Context, new, old runtime.Object, shootClient client.Client) error
}

MutatorWithShootClient validates and if needed mutates objects. It needs the shoot client.

type Webhook

type Webhook struct {
	Name     string
	Kind     string
	Provider string
	Path     string
	Target   string
	Types    []runtime.Object
	Webhook  *admission.Webhook
	Handler  http.Handler
	Selector *metav1.LabelSelector
}

Webhook is the specification of a webhook.

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