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controller.go
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controller.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 operatingsystemconfig
import (
"context"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/source"
extensionspredicate "github.com/gardener/gardener/extensions/pkg/predicate"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
)
const (
// FinalizerName is the name of the finalizer written by this controller.
FinalizerName = "extensions.gardener.cloud/operatingsystemconfigs"
// ControllerName is the name of the operating system configuration controller.
ControllerName = "operatingsystemconfig"
)
// AddArgs are arguments for adding an operatingsystemconfig controller to a manager.
type AddArgs struct {
// Actuator is an operatingsystemconfig actuator.
Actuator Actuator
// 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
// Types are the similar types which can be combined with a logic or,
// of the resource considered for reconciliation.
Types []string
}
// Add adds an operatingsystemconfig controller to the given manager using the given AddArgs.
func Add(mgr manager.Manager, args AddArgs) error {
args.ControllerOptions.Reconciler = NewReconciler(mgr, args.Actuator)
predicates := extensionspredicate.AddTypePredicate(args.Predicates, args.Types...)
return add(mgr, args.ControllerOptions, predicates)
}
// DefaultPredicates returns the default predicates for an operatingsystemconfig reconciler.
func DefaultPredicates(ctx context.Context, mgr manager.Manager, ignoreOperationAnnotation bool) []predicate.Predicate {
return extensionspredicate.DefaultControllerPredicates(ignoreOperationAnnotation, extensionspredicate.ShootNotFailedPredicate(ctx, mgr))
}
func add(mgr manager.Manager, options controller.Options, predicates []predicate.Predicate) error {
ctrl, err := controller.New(ControllerName, mgr, options)
if err != nil {
return err
}
return ctrl.Watch(source.Kind(mgr.GetCache(), &extensionsv1alpha1.OperatingSystemConfig{}), &handler.EnqueueRequestForObject{}, predicates...)
}