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types_controllerregistration.go
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/
types_controllerregistration.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package core
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// +genclient
// +genclient:nonNamespaced
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// ControllerRegistration represents a registration of an external controller.
type ControllerRegistration struct {
metav1.TypeMeta
// Standard object metadata.
metav1.ObjectMeta
// Spec contains the specification of this registration.
// If the object's deletion timestamp is set, this field is immutable.
Spec ControllerRegistrationSpec
}
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// ControllerRegistrationList is a collection of ControllerRegistrations.
type ControllerRegistrationList struct {
metav1.TypeMeta
// Standard list object metadata.
metav1.ListMeta
// Items is the list of ControllerRegistrations.
Items []ControllerRegistration
}
// ControllerRegistrationSpec is the specification of a ControllerRegistration.
type ControllerRegistrationSpec struct {
// Resources is a list of combinations of kinds (Infrastructure, Generic, ...) and their actual types
// (aws-route53, gcp, auditlog, ...).
Resources []ControllerResource
// Deployment contains information for how this controller is deployed.
Deployment *ControllerRegistrationDeployment
}
// ControllerResource is a combination of a kind (Infrastructure, Generic, ...) and the actual type for this
// kind (aws-route53, gcp, auditlog, ...).
type ControllerResource struct {
// Kind is the resource kind.
Kind string
// Type is the resource type.
Type string
// GloballyEnabled determines if this resource is required by all Shoot clusters.
// This field is defaulted to false when kind is "Extension".
GloballyEnabled *bool
// ReconcileTimeout defines how long Gardener should wait for the resource reconciliation.
// This field is defaulted to 3m0s when kind is "Extension".
ReconcileTimeout *metav1.Duration
// Primary determines if the controller backed by this ControllerRegistration is responsible for the extension
// resource's lifecycle. This field defaults to true. There must be exactly one primary controller for this kind/type
// combination. This field is immutable.
Primary *bool
// Lifecycle defines a strategy that determines when different operations on a ControllerResource should be performed.
// This field is defaulted in the following way when kind is "Extension".
// Reconcile: "AfterKubeAPIServer"
// Delete: "BeforeKubeAPIServer"
// Migrate: "BeforeKubeAPIServer"
Lifecycle *ControllerResourceLifecycle
// WorkerlessSupported specifies whether this ControllerResource supports Workerless Shoot clusters.
// This field is only relevant when kind is "Extension".
WorkerlessSupported *bool
}
// DeploymentRef contains information about `ControllerDeployment` references.
type DeploymentRef struct {
// Name is the name of the `ControllerDeployment` that is being referred to.
Name string
}
// ControllerRegistrationDeployment contains information for how this controller is deployed.
type ControllerRegistrationDeployment struct {
// Policy controls how the controller is deployed. It defaults to 'OnDemand'.
Policy *ControllerDeploymentPolicy
// SeedSelector contains an optional label selector for seeds. Only if the labels match then this controller will be
// considered for a deployment.
// An empty list means that all seeds are selected.
SeedSelector *metav1.LabelSelector
// DeploymentRefs holds references to `ControllerDeployments`. Only one element is supported currently.
DeploymentRefs []DeploymentRef
}
// ControllerDeploymentPolicy is a string alias.
type ControllerDeploymentPolicy string
const (
// ControllerDeploymentPolicyOnDemand specifies that the controller shall be only deployed if required by another
// resource. If nothing requires it then the controller shall not be deployed.
ControllerDeploymentPolicyOnDemand ControllerDeploymentPolicy = "OnDemand"
// ControllerDeploymentPolicyAlways specifies that the controller shall be deployed always, independent of whether
// another resource requires it or the respective seed has shoots.
ControllerDeploymentPolicyAlways ControllerDeploymentPolicy = "Always"
// ControllerDeploymentPolicyAlwaysExceptNoShoots specifies that the controller shall be deployed always, independent of
// whether another resource requires it, but only when the respective seed has at least one shoot.
ControllerDeploymentPolicyAlwaysExceptNoShoots ControllerDeploymentPolicy = "AlwaysExceptNoShoots"
)
// ControllerResourceLifecycleStrategy is a string alias.
type ControllerResourceLifecycleStrategy string
const (
// BeforeKubeAPIServer specifies that a resource should be handled before the kube-apiserver.
BeforeKubeAPIServer ControllerResourceLifecycleStrategy = "BeforeKubeAPIServer"
// AfterKubeAPIServer specifies that a resource should be handled after the kube-apiserver.
AfterKubeAPIServer ControllerResourceLifecycleStrategy = "AfterKubeAPIServer"
// AfterWorker specifies that a resource should be handled after workers. This is only available during reconcile.
AfterWorker ControllerResourceLifecycleStrategy = "AfterWorker"
)
// ControllerResourceLifecycle defines the lifecycle of a controller resource.
type ControllerResourceLifecycle struct {
// Reconcile defines the strategy during reconciliation.
Reconcile *ControllerResourceLifecycleStrategy
// Delete defines the strategy during deletion.
Delete *ControllerResourceLifecycleStrategy
// Migrate defines the strategy during migration.
Migrate *ControllerResourceLifecycleStrategy
}