apiserver

type AdmissionConfiguration struct {
	metav1.TypeMeta

	// Plugins allows specifying a configuration per admission control plugin.
	// +optional
	Plugins []AdmissionPluginConfiguration
}

type AdmissionPluginConfiguration struct {
	// Name is the name of the admission controller.
	// It must match the registered admission plugin name.
	Name string

	// Path is the path to a configuration file that contains the plugin's
	// configuration
	// +optional
	Path string

	// Configuration is an embedded configuration object to be used as the plugin's
	// configuration. If present, it will be used instead of the path to the configuration file.
	// +optional
	Configuration *runtime.Unknown
}

type AuthenticationConfiguration struct {
	metav1.TypeMeta

	JWT []JWTAuthenticator
}

type AuthorizationConfiguration struct {
	metav1.TypeMeta

	// Authorizers is an ordered list of authorizers to
	// authorize requests against.
	// This is similar to the --authorization-modes kube-apiserver flag
	// Must be at least one.
	Authorizers []AuthorizerConfiguration `json:"authorizers"`
}

type AuthorizerConfiguration struct {
	// Type refers to the type of the authorizer
	// "Webhook" is supported in the generic API server
	// Other API servers may support additional authorizer
	// types like Node, RBAC, ABAC, etc.
	Type AuthorizerType

	// Name used to describe the webhook
	// This is explicitly used in monitoring machinery for metrics
	// Note: Names must be DNS1123 labels like `myauthorizername` or
	//		 subdomains like `myauthorizer.example.domain`
	// Required, with no default
	Name string

	// Webhook defines the configuration for a Webhook authorizer
	// Must be defined when Type=Webhook
	Webhook *WebhookConfiguration
}

type AuthorizerType string

type ClaimMappings struct {
	Username PrefixedClaimOrExpression
	Groups   PrefixedClaimOrExpression
	UID      ClaimOrExpression
	Extra    []ExtraMapping
}

type ClaimOrExpression struct {
	Claim      string
	Expression string
}

type ClaimValidationRule struct {
	Claim         string
	RequiredValue string

	Expression string
	Message    string
}

type Connection struct {
	// Protocol is the protocol used to connect from client to the konnectivity server.
	ProxyProtocol ProtocolType

	// Transport defines the transport configurations we use to dial to the konnectivity server.
	// This is required if ProxyProtocol is HTTPConnect or GRPC.
	// +optional
	Transport *Transport
}

type EgressSelection struct {
	// Name is the name of the egress selection.
	// Currently supported values are "controlplane", "etcd" and "cluster"
	Name string

	// Connection is the exact information used to configure the egress selection
	Connection Connection
}

type EgressSelectorConfiguration struct {
	metav1.TypeMeta

	// EgressSelections contains a list of egress selection client configurations
	EgressSelections []EgressSelection
}

type ExtraMapping struct {
	Key             string
	ValueExpression string
}

type Issuer struct {
	URL                  string
	CertificateAuthority string
	Audiences            []string
}

type JWTAuthenticator struct {
	Issuer               Issuer
	ClaimValidationRules []ClaimValidationRule
	ClaimMappings        ClaimMappings
	UserValidationRules  []UserValidationRule
}

type PrefixedClaimOrExpression struct {
	Claim  string
	Prefix *string

	Expression string
}

type ProtocolType string

type TCPTransport struct {
	// URL is the location of the konnectivity server to connect to.
	// As an example it might be "https://127.0.0.1:8131"
	URL string

	// TLSConfig is the config needed to use TLS when connecting to konnectivity server
	// +optional
	TLSConfig *TLSConfig
}

type TLSConfig struct {
	// caBundle is the file location of the CA to be used to determine trust with the konnectivity server.
	// Must be absent/empty if TCPTransport.URL is prefixed with http://
	// If absent while TCPTransport.URL is prefixed with https://, default to system trust roots.
	// +optional
	CABundle string

	// clientKey is the file location of the client key to authenticate with the konnectivity server
	// Must be absent/empty if TCPTransport.URL is prefixed with http://
	// Must be configured if TCPTransport.URL is prefixed with https://
	// +optional
	ClientKey string

	// clientCert is the file location of the client certificate to authenticate with the konnectivity server
	// Must be absent/empty if TCPTransport.URL is prefixed with http://
	// Must be configured if TCPTransport.URL is prefixed with https://
	// +optional
	ClientCert string
}

type TracingConfiguration struct {
	metav1.TypeMeta

	// Embed the component config tracing configuration struct
	tracingapi.TracingConfiguration
}

type Transport struct {
	// TCP is the TCP configuration for communicating with the konnectivity server via TCP
	// ProxyProtocol of GRPC is not supported with TCP transport at the moment
	// Requires at least one of TCP or UDS to be set
	// +optional
	TCP *TCPTransport

	// UDS is the UDS configuration for communicating with the konnectivity server via UDS
	// Requires at least one of TCP or UDS to be set
	// +optional
	UDS *UDSTransport
}

type UDSTransport struct {
	// UDSName is the name of the unix domain socket to connect to konnectivity server
	// This does not use a unix:// prefix. (Eg: /etc/srv/kubernetes/konnectivity-server/konnectivity-server.socket)
	UDSName string
}

type UserValidationRule struct {
	Expression string
	Message    string
}

type WebhookConfiguration struct {
	// The duration to cache 'authorized' responses from the webhook
	// authorizer.
	// Same as setting `--authorization-webhook-cache-authorized-ttl` flag
	// Default: 5m0s
	AuthorizedTTL metav1.Duration
	// The duration to cache 'unauthorized' responses from the webhook
	// authorizer.
	// Same as setting `--authorization-webhook-cache-unauthorized-ttl` flag
	// Default: 30s
	UnauthorizedTTL metav1.Duration
	// Timeout for the webhook request
	// Maximum allowed value is 30s.
	// Required, no default value.
	Timeout metav1.Duration
	// The API version of the authorization.k8s.io SubjectAccessReview to
	// send to and expect from the webhook.
	// Same as setting `--authorization-webhook-version` flag
	// Valid values: v1beta1, v1
	// Required, no default value
	SubjectAccessReviewVersion string
	// MatchConditionSubjectAccessReviewVersion specifies the SubjectAccessReview
	// version the CEL expressions are evaluated against
	// Valid values: v1
	// Required, no default value
	MatchConditionSubjectAccessReviewVersion string
	// Controls the authorization decision when a webhook request fails to
	// complete or returns a malformed response or errors evaluating
	// matchConditions.
	// Valid values:
	//   - NoOpinion: continue to subsequent authorizers to see if one of
	//     them allows the request
	//   - Deny: reject the request without consulting subsequent authorizers
	// Required, with no default.
	FailurePolicy string

	// ConnectionInfo defines how we talk to the webhook
	ConnectionInfo WebhookConnectionInfo

	// matchConditions is a list of conditions that must be met for a request to be sent to this
	// webhook. An empty list of matchConditions matches all requests.
	// There are a maximum of 64 match conditions allowed.
	//
	// The exact matching logic is (in order):
	//   1. If at least one matchCondition evaluates to FALSE, then the webhook is skipped.
	//   2. If ALL matchConditions evaluate to TRUE, then the webhook is called.
	//   3. If at least one matchCondition evaluates to an error (but none are FALSE):
	//      - If failurePolicy=Deny, then the webhook rejects the request
	//      - If failurePolicy=NoOpinion, then the error is ignored and the webhook is skipped
	MatchConditions []WebhookMatchCondition
}

type WebhookConnectionInfo struct {
	// Controls how the webhook should communicate with the server.
	// Valid values:
	// - KubeConfigFile: use the file specified in kubeConfigFile to locate the
	//   server.
	// - InClusterConfig: use the in-cluster configuration to call the
	//   SubjectAccessReview API hosted by kube-apiserver. This mode is not
	//   allowed for kube-apiserver.
	Type string

	// Path to KubeConfigFile for connection info
	// Required, if connectionInfo.Type is KubeConfig
	KubeConfigFile *string
}

type WebhookMatchCondition struct {
	// expression represents the expression which will be evaluated by CEL. Must evaluate to bool.
	// CEL expressions have access to the contents of the SubjectAccessReview in v1 version.
	// If version specified by subjectAccessReviewVersion in the request variable is v1beta1,
	// the contents would be converted to the v1 version before evaluating the CEL expression.
	//
	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
	Expression string
}