infrastructure

type Actuator interface {
	// Reconcile reconciles the [extensionsv1alpha1.Infrastructure] resource.
	//
	// Implementations should ensure that required infrastructure resources
	// are created or updated to reach the desired state.
	Reconcile(context.Context, logr.Logger, *extensionsv1alpha1.Infrastructure, *extensionscontroller.Cluster) error

	// Delete is invoked when the [extensionsv1alpha1.Infrastructure]
	// resource is deleted.
	//
	// Implementations should take care of cleaning up any infrastructure
	// related resources (e.g. subnets, routers, etc.) which were created by
	// the Extension.
	//
	// Implementations must wait until all resources managed by the
	// extension have been gracefully cleaned up.
	Delete(context.Context, logr.Logger, *extensionsv1alpha1.Infrastructure, *extensionscontroller.Cluster) error

	// ForceDelete is invoked when the shoot cluster associated with the
	// [extensionsv1alpha1.Infrastructure] resource is being deleted in a
	// forceful manner.
	//
	// Implementations should take care of unblocking the deletion flow by
	// attempting to cleanup any resources created by the extension, remove
	// any finalizers created for custom resources, etc., and also skip
	// waiting for external resources (e.g. subnets, routers, etc.), if they
	// cannot be deleted gracefully.
	//
	// If some resources managed by the extension implementation cannot be
	// deleted gracefully, this method should still succeed, even if some
	// resources are orphaned.
	ForceDelete(context.Context, logr.Logger, *extensionsv1alpha1.Infrastructure, *extensionscontroller.Cluster) error

	// Restore restores the [extensionsv1alpha1.Infrastructure] from a
	// previously saved state.
	//
	// This method is invoked when the shoot cluster associated with the
	// [extensionsv1alpha1.Infrastructure] resource is being restored on the
	// target seed cluster.
	//
	// Implementations may use the persisted data in the .status.state field
	// for restoring the state, when the shoot is being migrated to a
	// different seed cluster.
	Restore(context.Context, logr.Logger, *extensionsv1alpha1.Infrastructure, *extensionscontroller.Cluster) error

	// Migrate prepares the [extensionsv1alpha1.Infrastructure] resource for
	// migration.
	//
	// This method is invoked when the shoot cluster associated with the
	// [extensionsv1alpha1.Infrastructure] resource is being migrated to
	// another seed cluster.
	//
	// Implementations should take care of storing any required state in the
	// .status.state field, so that it can later be restored from this
	// state.
	Migrate(context.Context, logr.Logger, *extensionsv1alpha1.Infrastructure, *extensionscontroller.Cluster) error
}

type AddArgs struct {
	// Actuator is an Infrastructure actuator.
	Actuator Actuator
	// ConfigValidator is an Infrastructure config validator.
	ConfigValidator ConfigValidator
	// ControllerOptions are the controller options used for creating a controller.
	// The options.Reconciler is always overridden with a reconciler created from the
	// given actuator.
	ControllerOptions controller.Options
	// Predicates are the predicates to use.
	// If unset, GenerationChangedPredicate will be used.
	Predicates []predicate.Predicate
	// Type is the type of the resource considered for reconciliation.
	Type string
	// WatchBuilder defines additional watches on controllers that should be set up.
	WatchBuilder extensionscontroller.WatchBuilder
	// IgnoreOperationAnnotation specifies whether to ignore the operation annotation or not.
	// If the annotation is not ignored, the extension controller will only reconcile
	// with a present operation annotation typically set during a reconcile (e.g. in the maintenance time) by the Gardenlet
	IgnoreOperationAnnotation bool
	// ExtensionClasses defines the extension classes this controller is responsible for.
	ExtensionClasses []extensionsv1alpha1.ExtensionClass
	// KnownCodes is a map of known error codes and their respective error check functions.
	KnownCodes map[gardencorev1beta1.ErrorCode]func(string) bool
}

type ConfigValidator interface {
	// Validate validates the provider config of the given infrastructure resource with the cloud provider.
	// If the returned error list is non-empty, the reconciliation will fail with an error.
	// This error will have the error code ERR_CONFIGURATION_PROBLEM, unless there is at least one error in the list
	// that has its ErrorType field set to field.ErrorTypeInternal.
	Validate(ctx context.Context, infra *extensionsv1alpha1.Infrastructure) field.ErrorList
}