--- /dev/null
+package collectdglobal
+
+import (
+ "context"
+ "fmt"
+ //"path/filepath"
+ "reflect"
+ "strings"
+
+ "github.com/go-logr/logr"
+ "github.com/operator-framework/operator-sdk/pkg/predicate"
+
+ onapv1alpha1 "demo/vnfs/DAaaS/microservices/collectd-operator/pkg/apis/onap/v1alpha1"
+ collectdutils "demo/vnfs/DAaaS/microservices/collectd-operator/pkg/controller/utils"
+
+ appsv1 "k8s.io/api/apps/v1"
+ corev1 "k8s.io/api/core/v1"
+ extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
+ "k8s.io/apimachinery/pkg/api/errors"
+ "k8s.io/apimachinery/pkg/runtime"
+ "k8s.io/apimachinery/pkg/types"
+ "k8s.io/client-go/util/retry"
+ "sigs.k8s.io/controller-runtime/pkg/client"
+ "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/reconcile"
+ logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
+ "sigs.k8s.io/controller-runtime/pkg/source"
+)
+
+var log = logf.Log.WithName("controller_collectdglobal")
+
+// Add creates a new CollectdGlobal Controller and adds it to the Manager. The Manager will set fields on the Controller
+// and Start it when the Manager is Started.
+func Add(mgr manager.Manager) error {
+ return add(mgr, newReconciler(mgr))
+}
+
+// newReconciler returns a new reconcile.Reconciler
+func newReconciler(mgr manager.Manager) reconcile.Reconciler {
+ return &ReconcileCollectdGlobal{client: mgr.GetClient(), scheme: mgr.GetScheme()}
+}
+
+// add adds a new Controller to mgr with r as the reconcile.Reconciler
+func add(mgr manager.Manager, r reconcile.Reconciler) error {
+ // Create a new controller
+ log.V(1).Info("Creating a new controller for CollectdGlobal")
+ c, err := controller.New("collectdglobal-controller", mgr, controller.Options{Reconciler: r})
+ if err != nil {
+ return err
+ }
+
+ // Watch for changes to primary resource CollectdGlobal
+ log.V(1).Info("Add watcher for primary resource CollectdGlobal")
+ err = c.Watch(&source.Kind{Type: &onapv1alpha1.CollectdGlobal{}}, &handler.EnqueueRequestForObject{}, predicate.GenerationChangedPredicate{})
+ if err != nil {
+ return err
+ }
+
+ log.V(1).Info("Add watcher for secondary resource Collectd Daemonset")
+ err = c.Watch(
+ &source.Kind{Type: &appsv1.DaemonSet{}},
+ &handler.EnqueueRequestsFromMapFunc{
+ ToRequests: handler.ToRequestsFunc(func(a handler.MapObject) []reconcile.Request {
+ labelSelector, err := collectdutils.GetWatchLabels()
+ labels := strings.Split(labelSelector, "=")
+ if err != nil {
+ log.Error(err, "Failed to get watch labels, continuing with default label")
+ }
+ rcp := r.(*ReconcileCollectdGlobal)
+ // Select the Daemonset with labelSelector (Defautl is app=collectd)
+ if a.Meta.GetLabels()[labels[0]] == labels[1] {
+ var requests []reconcile.Request
+ cg, err := collectdutils.GetCollectdGlobal(rcp.client, a.Meta.GetNamespace())
+ if err != nil || cg == nil {
+ return nil
+ }
+ requests = append(requests, reconcile.Request{
+ NamespacedName: client.ObjectKey{Namespace: cg.Namespace, Name: cg.Name}})
+ return requests
+ }
+ return nil
+ }),
+ })
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
+
+// blank assignment to verify that ReconcileCollectdGlobal implements reconcile.Reconciler
+var _ reconcile.Reconciler = &ReconcileCollectdGlobal{}
+
+// ReconcileCollectdGlobal reconciles a CollectdGlobal object
+type ReconcileCollectdGlobal struct {
+ // This client, initialized using mgr.Client() above, is a split client
+ // that reads objects from the cache and writes to the apiserver
+ client client.Client
+ scheme *runtime.Scheme
+}
+
+// Reconcile reads that state of the cluster for a CollectdGlobal object and makes changes based on the state read
+// and what is in the CollectdGlobal.Spec
+// TODO(user): Modify this Reconcile function to implement your Controller logic. This example creates
+// a Pod as an example
+// Note:
+// The Controller will requeue the Request to be processed again if the returned error is non-nil or
+// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
+func (r *ReconcileCollectdGlobal) Reconcile(request reconcile.Request) (reconcile.Result, error) {
+ reqLogger := log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
+ reqLogger.Info("Reconciling CollectdGlobal")
+
+ // Fetch the CollectdGlobal instance
+ instance := &onapv1alpha1.CollectdGlobal{}
+ err := r.client.Get(context.TODO(), request.NamespacedName, instance)
+ if err != nil {
+ if errors.IsNotFound(err) {
+ // Request object not found, could have been deleted after reconcile request.
+ // Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
+ // Return and don't requeue
+ reqLogger.V(1).Info("CollectdGlobal object Not found")
+ return reconcile.Result{}, nil
+ }
+ // Error reading the object - requeue the request.
+ reqLogger.V(1).Info("Error reading the CollectdGlobal object, Requeuing")
+ return reconcile.Result{}, err
+ }
+
+ // Handle Delete CR for additional cleanup
+ isDelete, err := r.handleDelete(reqLogger, instance)
+ if isDelete {
+ return reconcile.Result{}, err
+ }
+
+ // Add finalizer for this CR
+ if !collectdutils.Contains(instance.GetFinalizers(), collectdutils.CollectdFinalizer) {
+ if err := r.addFinalizer(reqLogger, instance); err != nil {
+ return reconcile.Result{}, err
+ }
+ return reconcile.Result{}, nil
+ }
+ // Handle the reconciliation for CollectdGlobal.
+ // At this stage the Status of the CollectdGlobal should NOT be ""
+ err = r.handleCollectdGlobal(reqLogger, instance, false)
+ return reconcile.Result{}, err
+}
+
+// handleCollectdGlobal regenerates the collectd conf on CR Create, Update, Delete events
+func (r *ReconcileCollectdGlobal) handleCollectdGlobal(reqLogger logr.Logger, cr *onapv1alpha1.CollectdGlobal, isDelete bool) error {
+
+ rmap, err := collectdutils.FindResourceMapForCR(r.client, reqLogger, cr.Namespace)
+ if err != nil {
+ reqLogger.Info(":::: Skip current reconcile:::: Resources not found. Cache might be stale. Requeue")
+ return err
+ }
+
+ cm := rmap.ConfigMap
+ reqLogger.V(1).Info("Found ResourceMap")
+ reqLogger.V(1).Info(":::: ConfigMap Info ::::", "ConfigMap.Namespace", cm.Namespace, "ConfigMap.Name", cm.Name)
+
+ collectdConf, err := collectdutils.RebuildCollectdConf(r.client, cr.Namespace, isDelete, "")
+ if err != nil {
+ reqLogger.Error(err, "Skip reconcile: Rebuild conf failed")
+ return err
+ }
+
+ cm.SetAnnotations(map[string]string{
+ "daaas-random": collectdutils.ComputeSHA256([]byte(collectdConf)),
+ })
+
+ cm.Data["collectd.conf"] = collectdConf
+ retryErr := retry.RetryOnConflict(retry.DefaultRetry, func() error {
+ // Update the ConfigMap with new Spec and reload DaemonSets
+ reqLogger.Info("Updating the ConfigMap", "ConfigMap.Namespace", cm.Namespace, "ConfigMap.Name", cm.Name)
+ log.V(1).Info("ConfigMap Data", "Map: ", cm.Data)
+ err = r.client.Update(context.TODO(), cm)
+ if err != nil {
+ reqLogger.Error(err, "Update the ConfigMap failed", "ConfigMap.Namespace", cm.Namespace, "ConfigMap.Name", cm.Name)
+ return err
+ }
+ return nil
+ })
+ if retryErr != nil {
+ panic(fmt.Errorf("Update failed: %v", retryErr))
+ }
+
+ retryErr = retry.RetryOnConflict(retry.DefaultRetry, func() error {
+ // Retrieve the latest version of Daemonset before attempting update
+ // RetryOnConflict uses exponential backoff to avoid exhausting the apiserver
+ // Select DaemonSets with label
+ dsList := &extensionsv1beta1.DaemonSetList{}
+ opts := &client.ListOptions{}
+ labelSelector, err := collectdutils.GetWatchLabels()
+ if err != nil {
+ reqLogger.Error(err, "Failed to get watch labels, continuing with default label")
+ }
+ opts.SetLabelSelector(labelSelector)
+ opts.InNamespace(cr.Namespace)
+ err = r.client.List(context.TODO(), opts, dsList)
+ if err != nil {
+ panic(fmt.Errorf("Failed to get latest version of DaemonSet: %v", err))
+ }
+
+ if dsList.Items == nil || len(dsList.Items) == 0 {
+ return errors.NewNotFound(corev1.Resource("daemonset"), "DaemonSet")
+ }
+ ds := &dsList.Items[0]
+ //Restart Collectd Pods
+ reqLogger.Info("Reloading the Daemonset", "DaemonSet.Namespace", ds.Namespace, "DaemonSet.Name", ds.Name)
+ //Restart only if hash of conf has changed.
+ ds.Spec.Template.SetAnnotations(map[string]string{
+ "daaas-random": collectdutils.ComputeSHA256([]byte(collectdConf)),
+ })
+ r.handleAdditonalConfigMap(reqLogger, cr, ds)
+ updateErr := r.client.Update(context.TODO(), ds)
+ return updateErr
+ })
+ if retryErr != nil {
+ panic(fmt.Errorf("Update failed: %v", retryErr))
+ }
+
+ err = r.updateStatus(cr)
+ if err != nil {
+ reqLogger.Error(err, "Unable to update status")
+ return err
+ }
+ // Reconcile success
+ reqLogger.Info("Reconcile success!!")
+ return nil
+}
+
+// Handle Delete CR event for additional cleanup
+func (r *ReconcileCollectdGlobal) handleDelete(reqLogger logr.Logger, cr *onapv1alpha1.CollectdGlobal) (bool, error) {
+ // Check if the CollectdGlobal instance is marked to be deleted, which is
+ // indicated by the deletion timestamp being set.
+ isMarkedToBeDeleted := cr.GetDeletionTimestamp() != nil
+ if isMarkedToBeDeleted {
+ // Update status to Deleting state
+ cr.Status.Status = onapv1alpha1.Deleting
+ cr.Status.CollectdAgents = nil
+ _ = r.client.Status().Update(context.TODO(), cr)
+
+ if collectdutils.Contains(cr.GetFinalizers(), collectdutils.CollectdFinalizer) {
+ // Run finalization logic for CollectdFinalizer. If the
+ // finalization logic fails, don't remove the finalizer so
+ // that we can retry during the next reconciliation.
+ if err := r.finalizeCollectdGlobal(reqLogger, cr); err != nil {
+ return isMarkedToBeDeleted, err
+ }
+
+ // Remove CollectdFinalizer. Once all finalizers have been
+ // removed, the object will be deleted.
+ cr.SetFinalizers(collectdutils.Remove(cr.GetFinalizers(), collectdutils.CollectdFinalizer))
+ err := r.client.Update(context.TODO(), cr)
+ if err != nil {
+ return isMarkedToBeDeleted, err
+ }
+ }
+ }
+ return isMarkedToBeDeleted, nil
+}
+
+func (r *ReconcileCollectdGlobal) updateStatus(cr *onapv1alpha1.CollectdGlobal) error {
+ switch cr.Status.Status {
+ case onapv1alpha1.Initial:
+ cr.Status.Status = onapv1alpha1.Created
+ case onapv1alpha1.Created, onapv1alpha1.Enabled:
+ pods, err := collectdutils.GetPodList(r.client, cr.Namespace)
+ if err != nil {
+ return err
+ }
+ if !reflect.DeepEqual(pods, cr.Status.CollectdAgents) {
+ cr.Status.CollectdAgents = pods
+ cr.Status.Status = onapv1alpha1.Enabled
+ }
+ case onapv1alpha1.Deleting, onapv1alpha1.Deprecated:
+ return nil
+ }
+ err := r.client.Status().Update(context.TODO(), cr)
+ return err
+}
+
+func (r *ReconcileCollectdGlobal) finalizeCollectdGlobal(reqLogger logr.Logger, cr *onapv1alpha1.CollectdGlobal) error {
+ // Cleanup by regenerating new collectd conf and rolling update of DaemonSet
+ if err := r.handleCollectdGlobal(reqLogger, cr, true); err != nil {
+ reqLogger.Error(err, "Finalize CollectdGlobal failed!!")
+ return err
+ }
+ reqLogger.Info("Successfully finalized CollectdGlobal!!")
+ return nil
+}
+
+func (r *ReconcileCollectdGlobal) addFinalizer(reqLogger logr.Logger, cr *onapv1alpha1.CollectdGlobal) error {
+ reqLogger.Info("Adding Finalizer for the CollectdGlobal")
+ cr.SetFinalizers(append(cr.GetFinalizers(), collectdutils.CollectdFinalizer))
+ // Update status from Initial to Created
+ // Since addFinalizer will be executed only once,
+ // the status will be changed from Initial state to Created
+ updateErr := r.updateStatus(cr)
+ if updateErr != nil {
+ reqLogger.Error(updateErr, "Failed to update status from Initial state")
+ }
+ // Update CR
+ err := r.client.Update(context.TODO(), cr)
+ if err != nil {
+ reqLogger.Error(err, "Failed to update CollectdGlobal with finalizer")
+ return err
+ }
+ return nil
+}
+
+func (r *ReconcileCollectdGlobal) handleAdditonalConfigMap(reqLogger logr.Logger, cr *onapv1alpha1.CollectdGlobal, ds *extensionsv1beta1.DaemonSet) error {
+ cm := &corev1.ConfigMap{}
+ key := types.NamespacedName{Namespace: cr.Namespace, Name: cr.Spec.ConfigMap}
+ err := r.client.Get(context.TODO(), key, cm)
+ if err != nil {
+ reqLogger.Info("Error getting TypesDB")
+ return nil
+ }
+ // TODO: Implement Types.DB mounting
+ return nil
+}
Code Review / demo.git / blobdiff