admission

type Admitter interface {
	Admit(*Request) (*admissionv1.AdmissionResponse, error)
}

type MutatingAdmissionHandler interface {
	WebhookHandler
	// Since mutators can change a resource, each MutatingAdmissionHandler can only use 1 admit function.
	Admitter

	// MutatingWebhook returns a list of configurations to route to this handler.
	//
	// MutatingWebhook functions allows MutatingAdmissionHandler to perform modifications to the default configuration if needed.
	// A default configuration can be made using NewDefaultMutatingWebhook(...)
	// Most Webhooks implementing MutatingWebhook will only return one configuration.
	MutatingWebhook(clientConfig v1.WebhookClientConfig) []v1.MutatingWebhook
}

type Request struct {
	admissionv1.AdmissionRequest
	Context context.Context
}

type ValidatingAdmissionHandler interface {
	WebhookHandler

	// ValidatingWebhook returns a list of configurations to route to this handler.
	//
	// This functions allows ValidatingAdmissionHandler to perform modifications to the default configuration if needed.
	// A default configuration can be made using NewDefaultValidatingWebhook(...)
	// Most Webhooks implementing ValidatingWebhook will only return one configuration.
	ValidatingWebhook(clientConfig v1.WebhookClientConfig) []v1.ValidatingWebhook

	// Admitters returns the admitters that this handler will call when evaluating a resource. If any one of these
	// fails or encounters an error, the failure/error is immediately returned and the rest are short-circuted.
	Admitters() []Admitter
}

type WebhookHandler interface {
	// GVR returns GroupVersionResource that the Webhook reviews.
	// The returned GVR is used to define the route for accessing this webhook as well as creating the Webhooks Name.
	// Thus the GVR returned must be unique from other WebhookHandlers of the same type e.g.(Mutating or Validating).
	// If a WebhookHandler desires to monitor all resources in a group the Resource defined int he GVR should be "*".
	// If a WebhookHandler desires to monitor a core type the Group can be left empty "".
	GVR() schema.GroupVersionResource

	// Operations returns list of operations that this WebhookHandler supports.
	// Handlers will only be sent request with operations that are contained in the provided list.
	Operations() []v1.OperationType
}