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add.go
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add.go
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// Copyright 2022 Intel Corporation. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package lifecycle
import (
"context"
"fmt"
"time"
// Local
"github.com/go-logr/logr"
"github.com/intel/gardener-extension-cri-resmgr/pkg/consts"
"github.com/intel/gardener-extension-cri-resmgr/pkg/options"
// Gardener
"github.com/gardener/gardener/extensions/pkg/controller/extension"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
// Other
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
)
// ConfigMapToAllExtensionMapper maps creates reconciliation requests for extensions based on dedicate configMap of cri-resmgr extension.
func ConfigMapToAllExtensionMapper(ctx context.Context, log logr.Logger, reader client.Reader, obj client.Object) []reconcile.Request {
ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
defer cancel()
configMap, ok := obj.(*corev1.ConfigMap)
if !ok {
log.Info("WARNING: expected to get ConfigMap but got something different in configMapMapper to Extension!", "module", "configs")
return nil
}
extensionList := &extensionsv1alpha1.ExtensionList{}
if err := reader.List(ctx, extensionList); err != nil {
log.Info("WARNING: can not read list of Extension from Kubernetes", "error", err, "module", "configs")
return nil
}
var requests []reconcile.Request
extensionsFound := []string{}
for _, extension := range extensionList.Items {
if extension.Spec.Type == consts.ExtensionType {
// Skip extensions in "processing" state to not race with original extension controller
// https://github.com/gardener/gardener/blob/5bf28f8ff7ecf3e2ffe21224f0cb6ee30daf9997/extensions/pkg/controller/status.go#L115
if extension.Status.LastOperation.State == gardencorev1beta1.LastOperationStateProcessing {
log.Info("ignore extension", "module", "configs", "extensionNamespace", extension.Namespace)
continue
}
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Namespace: extension.Namespace,
Name: extension.Name,
},
})
extensionsFound = append(extensionsFound, fmt.Sprintf("%s/%s", extension.Namespace, extension.Name))
}
}
if len(extensionsFound) > 0 {
log.Info("configs: configMap changed so reconcile following extensions", "module", "configs", "configMap", configMap, "extensions", extensionsFound)
}
return requests
}
// AddToManager creates controller that watches Extension object and deploys necessary objects to Shoot cluster.
func AddToManager(mgr manager.Manager, options *options.Options, ignoreOperationAnnotation bool) error {
return extension.Add(mgr, extension.AddArgs{
Actuator: NewActuator(consts.ActuatorName),
ControllerOptions: options.ControllerOptions.Completed().Options(),
Name: consts.ControllerName,
FinalizerSuffix: consts.ExtensionType,
Resync: 60 * time.Minute,
Type: consts.ExtensionType, // to be used for TypePredicate
Predicates: extension.DefaultPredicates(ignoreOperationAnnotation),
IgnoreOperationAnnotation: ignoreOperationAnnotation,
})
}
// AddConfigMapWatchingControllerToManager creates controller that watches cri-resmgr-extension ConfigMap object and reconciles everything on Shoot clusters.
func AddConfigMapWatchingControllerToManager(mgr manager.Manager, options *options.Options) error {
// Create another instance of options - this time for "configMap2Extensions reconciler"
controllerOptions := options.ControllerOptions.Completed().Options()
configReconcilerArgs := extension.AddArgs{
Actuator: NewActuator(consts.ActuatorName + consts.ConfigsSuffix),
Resync: 60 * time.Minute,
FinalizerSuffix: consts.ExtensionType, // We're using the same finalizer as the original controller on purpose to "delete" only once without a need to wait for another "configs" controller
}
controllerOptions.Reconciler = extension.NewReconciler(configReconcilerArgs)
recoverPanic := true
controllerOptions.RecoverPanic = &recoverPanic
controllerName := consts.ControllerName + consts.ConfigsSuffix
ctrl, err := controller.New(controllerName, mgr, controllerOptions)
if err != nil {
return err
}
// only Watch for configMaps with properName and where its resourceVersionChanges
matchingLabelSelectorPredicate, err := predicate.LabelSelectorPredicate(
metav1.LabelSelector{
MatchLabels: map[string]string{
"app.kubernetes.io/name": "gardener-extension-cri-resmgr",
"resources.gardener.cloud/managed-by": "gardener",
},
},
)
if err != nil {
return err
}
// Predicates to watch over my configMap
predicates := []predicate.Predicate{matchingLabelSelectorPredicate, predicate.ResourceVersionChangedPredicate{}}
return ctrl.Watch(
&source.Kind{Type: &corev1.ConfigMap{}},
mapper.EnqueueRequestsFrom(
mapper.MapFunc(ConfigMapToAllExtensionMapper),
mapper.UpdateWithNew,
mgr.GetLogger().WithName(controllerName),
),
predicates...,
)
}