| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (ASF) licenses this file to you 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 operator |
| |
| import ( |
| "context" |
| "fmt" |
| "text/template" |
| |
| "github.com/go-logr/logr" |
| l "github.com/sirupsen/logrus" |
| apps "k8s.io/api/apps/v1" |
| core "k8s.io/api/core/v1" |
| apiequal "k8s.io/apimachinery/pkg/api/equality" |
| apierrors "k8s.io/apimachinery/pkg/api/errors" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/client-go/tools/record" |
| "k8s.io/client-go/util/retry" |
| ctrl "sigs.k8s.io/controller-runtime" |
| "sigs.k8s.io/controller-runtime/pkg/client" |
| runtimelog "sigs.k8s.io/controller-runtime/pkg/log" |
| |
| operatorv1alpha1 "github.com/apache/skywalking-swck/operator/apis/operator/v1alpha1" |
| "github.com/apache/skywalking-swck/operator/pkg/kubernetes" |
| ) |
| |
| var useImmutableConfigMap = true |
| |
| // EventExporterReconciler reconciles a EventExporter object |
| type EventExporterReconciler struct { |
| client.Client |
| Scheme *runtime.Scheme |
| FileRepo kubernetes.Repo |
| Recorder record.EventRecorder |
| } |
| |
| // +kubebuilder:rbac:groups=operator.skywalking.apache.org,resources=eventexporters,verbs=get;list;watch;create;update;patch;delete |
| // +kubebuilder:rbac:groups=operator.skywalking.apache.org,resources=eventexporters/status,verbs=get;update;patch |
| // +kubebuilder:rbac:groups=operator.skywalking.apache.org,resources=eventexporters/finalizers,verbs=update |
| // +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete |
| // +kubebuilder:rbac:groups="",resources=configmaps,verbs=get;list;watch;create;update;patch;delete |
| // +kubebuilder:rbac:groups="",resources=events,verbs=create;patch |
| |
| func (r *EventExporterReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { |
| log := runtimelog.FromContext(ctx) |
| log.Info(fmt.Sprintf("===============eventexporter reconcile started (ns: %s, name: %s)===============", req.Namespace, req.Name)) |
| |
| eventExporter := operatorv1alpha1.EventExporter{} |
| if err := r.Client.Get(ctx, req.NamespacedName, &eventExporter); err != nil { |
| return ctrl.Result{}, client.IgnoreNotFound(err) |
| } |
| |
| newConfigMapName := configMapName(&eventExporter) |
| if _, err := r.overlayData(ctx, log, &eventExporter, newConfigMapName); err != nil { |
| log.Error(err, "failed to delete eventexporter's configMap") |
| return ctrl.Result{}, err |
| } |
| |
| ff, err := r.FileRepo.GetFilesRecursive("templates") |
| if err != nil { |
| log.Error(err, "failed to load resource templates") |
| return ctrl.Result{}, err |
| } |
| |
| app := kubernetes.Application{ |
| Client: r.Client, |
| FileRepo: r.FileRepo, |
| CR: &eventExporter, |
| GVK: operatorv1alpha1.GroupVersion.WithKind("EventExporter"), |
| Recorder: r.Recorder, |
| TmplFunc: template.FuncMap{ |
| "configMapName": func() string { return newConfigMapName }, |
| }, |
| } |
| |
| if err := app.ApplyAll(ctx, ff, log); err != nil { |
| return ctrl.Result{}, err |
| } |
| |
| if err := r.checkState(ctx, log, &eventExporter); err != nil { |
| l.Error(err, "failed to check sub resources state") |
| return ctrl.Result{}, err |
| } |
| |
| return ctrl.Result{RequeueAfter: schedDuration}, nil |
| |
| } |
| |
| func (r *EventExporterReconciler) overlayData(ctx context.Context, log logr.Logger, |
| eventExporter *operatorv1alpha1.EventExporter, newConfigMapName string) (changed bool, err error) { |
| |
| oldConfigMapName := eventExporter.Status.ConfigMapName |
| if oldConfigMapName == newConfigMapName { |
| log.Info("eventexporter configuration keeps the same as before") |
| return false, nil |
| } |
| |
| newConfigMap := core.ConfigMap{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Namespace: eventExporter.Namespace, |
| Name: newConfigMapName, |
| OwnerReferences: []metav1.OwnerReference{ |
| { |
| APIVersion: eventExporter.APIVersion, |
| Kind: eventExporter.Kind, |
| Name: eventExporter.Name, |
| UID: eventExporter.UID, |
| }, |
| }, |
| Labels: map[string]string{ |
| "app": "eventexporter", |
| "operator.skywalking.apache.org/eventexporter-name": eventExporter.Name, |
| "operator.skywalking.apache.org/application": "eventexporter", |
| "operator.skywalking.apache.org/component": "configmap", |
| }, |
| }, |
| Immutable: &useImmutableConfigMap, |
| Data: map[string]string{"config.yaml": eventExporter.Spec.Config}, |
| } |
| |
| if err = r.Client.Create(ctx, &newConfigMap); err != nil { |
| log.Error(err, "failed to create eventexporter's configmap") |
| return true, err |
| } |
| |
| oldConfigMap := core.ConfigMap{} |
| err = r.Client.Get(ctx, client.ObjectKey{Namespace: eventExporter.Namespace, Name: oldConfigMapName}, &oldConfigMap) |
| if err != nil && !apierrors.IsNotFound(err) { |
| log.Error(err, "failed to get the eventexporter's configmap") |
| return true, err |
| } |
| |
| if !apierrors.IsNotFound(err) { |
| if err = r.Client.Delete(ctx, &oldConfigMap); err != nil { |
| log.Error(err, "failed to delete eventexporter's configmap") |
| return true, err |
| } |
| } |
| |
| return true, nil |
| } |
| |
| func (r *EventExporterReconciler) checkState(ctx context.Context, log logr.Logger, eventExporter *operatorv1alpha1.EventExporter) error { |
| overlay := operatorv1alpha1.EventExporterStatus{} |
| deployment := apps.Deployment{} |
| errCol := new(kubernetes.ErrorCollector) |
| |
| if err := r.Client.Get(ctx, client.ObjectKey{Namespace: eventExporter.Namespace, |
| Name: eventExporter.Name + "-eventexporter"}, &deployment); err != nil && !apierrors.IsNotFound(err) { |
| errCol.Collect(fmt.Errorf("failed to get deployment: %w", err)) |
| } else { |
| overlay.Conditions = deployment.Status.Conditions |
| overlay.AvailableReplicas = deployment.Status.AvailableReplicas |
| overlay.ConfigMapName = configMapName(eventExporter) |
| } |
| |
| if apiequal.Semantic.DeepDerivative(overlay, eventExporter.Status) { |
| log.Info("Status keeps the same as before") |
| return errCol.Error() |
| } |
| |
| if err := r.updateStatus(ctx, eventExporter, overlay, errCol); err != nil { |
| errCol.Collect(fmt.Errorf("failed to update status of EventExporter: %w", err)) |
| } |
| |
| log.Info("updated Status sub resource") |
| |
| return errCol.Error() |
| } |
| |
| func (r *EventExporterReconciler) updateStatus(ctx context.Context, eventExporter *operatorv1alpha1.EventExporter, |
| overlay operatorv1alpha1.EventExporterStatus, errCol *kubernetes.ErrorCollector) error { |
| // avoid resource conflict |
| return retry.RetryOnConflict(retry.DefaultBackoff, func() error { |
| if err := r.Client.Get(ctx, client.ObjectKey{Name: eventExporter.Name, Namespace: eventExporter.Namespace}, eventExporter); err != nil { |
| errCol.Collect(fmt.Errorf("failed to get EventExporter: %w", err)) |
| } |
| |
| eventExporter.Status = overlay |
| eventExporter.Kind = "EventExporter" |
| if err := kubernetes.ApplyOverlay(eventExporter, &operatorv1alpha1.EventExporter{Status: overlay}); err != nil { |
| errCol.Collect(fmt.Errorf("failed to apply overlay: %w", err)) |
| } |
| |
| if err := r.Status().Update(ctx, eventExporter); err != nil { |
| errCol.Collect(fmt.Errorf("failed to update status of EventExporter: %w", err)) |
| } |
| return errCol.Error() |
| }) |
| } |
| |
| func configMapName(eventExporter *operatorv1alpha1.EventExporter) string { |
| md5 := MD5Hash(eventExporter.Name + eventExporter.Spec.Config) |
| return fmt.Sprintf("eventexporter-cm-%s", md5) |
| } |
| |
| // SetupWithManager sets up the controller with the Manager. |
| func (r *EventExporterReconciler) SetupWithManager(mgr ctrl.Manager) error { |
| return ctrl.NewControllerManagedBy(mgr). |
| For(&operatorv1alpha1.EventExporter{}). |
| Complete(r) |
| } |