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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 containerruntime
import (
"context"
"time"
"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"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
)
const (
// FinalizerName is the prefix name of the finalizer written by this controller.
FinalizerName = "extensions.gardener.cloud/containerruntime"
// ControllerName is the name of the controller.
ControllerName = "containerruntime"
)
// AddArgs are arguments for adding an ContainerRuntime resources controller to a manager.
type AddArgs struct {
// Actuator is an ContainerRuntime resource actuator.
Actuator Actuator
// FinalizerSuffix is the suffix for the finalizer name.
FinalizerSuffix string
// 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.
Predicates []predicate.Predicate
// Resync determines the requeue interval.
Resync time.Duration
// Type is the type of the resource considered for reconciliation.
Type string
// 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
}
// Add adds an ContainerRuntime controller to the given manager using the given AddArgs.
func Add(ctx context.Context, mgr manager.Manager, args AddArgs) error {
args.ControllerOptions.Reconciler = NewReconciler(mgr, args.Actuator)
return add(ctx, mgr, args)
}
// DefaultPredicates returns the default predicates for an containerruntime reconciler.
func DefaultPredicates(ctx context.Context, mgr manager.Manager, ignoreOperationAnnotation bool) []predicate.Predicate {
return extensionspredicate.DefaultControllerPredicates(ignoreOperationAnnotation, extensionspredicate.ShootNotFailedPredicate(ctx, mgr))
}
func add(ctx context.Context, mgr manager.Manager, args AddArgs) error {
ctrl, err := controller.New(ControllerName, mgr, args.ControllerOptions)
if err != nil {
return err
}
predicates := extensionspredicate.AddTypePredicate(args.Predicates, args.Type)
if args.IgnoreOperationAnnotation {
if err := ctrl.Watch(
source.Kind(mgr.GetCache(), &extensionsv1alpha1.Cluster{}),
mapper.EnqueueRequestsFrom(ctx, mgr.GetCache(), ClusterToContainerResourceMapper(mgr, predicates...), mapper.UpdateWithNew, ctrl.GetLogger()),
); err != nil {
return err
}
}
return ctrl.Watch(source.Kind(mgr.GetCache(), &extensionsv1alpha1.ContainerRuntime{}), &handler.EnqueueRequestForObject{}, predicates...)
}