mirror of
https://github.com/k3s-io/kubernetes.git
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Updating federation ingress controller to support cascading deletion
This commit is contained in:
nikhiljindal
parent
434b1cc406
commit
7c721cbc2f
@ -24,8 +24,10 @@ import (
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federation_api "k8s.io/kubernetes/federation/apis/federation/v1beta1"
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federationclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_release_1_5"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util/deletionhelper"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util/eventsink"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/v1"
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extensions_v1beta1 "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/pkg/client/cache"
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@ -92,6 +94,8 @@ type IngressController struct {
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// For events
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eventRecorder record.EventRecorder
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deletionHelper *deletionhelper.DeletionHelper
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ingressReviewDelay time.Duration
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configMapReviewDelay time.Duration
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clusterAvailableDelay time.Duration
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@ -275,9 +279,72 @@ func NewIngressController(client federationclientset.Interface) *IngressControll
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err := client.Core().ConfigMaps(configMap.Namespace).Delete(configMap.Name, &v1.DeleteOptions{})
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return err
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})
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ic.deletionHelper = deletionhelper.NewDeletionHelper(
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ic.hasFinalizerFunc,
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ic.removeFinalizerFunc,
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ic.addFinalizerFunc,
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// objNameFunc
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func(obj pkg_runtime.Object) string {
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ingress := obj.(*extensions_v1beta1.Ingress)
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return ingress.Name
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},
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ic.updateTimeout,
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ic.eventRecorder,
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ic.ingressFederatedInformer,
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ic.federatedIngressUpdater,
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)
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return ic
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}
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// Returns true if the given object has the given finalizer in its ObjectMeta.
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func (ic *IngressController) hasFinalizerFunc(obj pkg_runtime.Object, finalizer string) bool {
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ingress := obj.(*extensions_v1beta1.Ingress)
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for i := range ingress.ObjectMeta.Finalizers {
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if string(ingress.ObjectMeta.Finalizers[i]) == finalizer {
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return true
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}
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}
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return false
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}
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// Removes the finalizer from the given objects ObjectMeta.
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// Assumes that the given object is a ingress.
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func (ic *IngressController) removeFinalizerFunc(obj pkg_runtime.Object, finalizer string) (pkg_runtime.Object, error) {
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ingress := obj.(*extensions_v1beta1.Ingress)
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newFinalizers := []string{}
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hasFinalizer := false
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for i := range ingress.ObjectMeta.Finalizers {
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if string(ingress.ObjectMeta.Finalizers[i]) != finalizer {
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newFinalizers = append(newFinalizers, ingress.ObjectMeta.Finalizers[i])
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} else {
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hasFinalizer = true
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}
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}
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if !hasFinalizer {
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// Nothing to do.
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return obj, nil
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}
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ingress.ObjectMeta.Finalizers = newFinalizers
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ingress, err := ic.federatedApiClient.Extensions().Ingresses(ingress.Namespace).Update(ingress)
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if err != nil {
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return nil, fmt.Errorf("failed to remove finalizer %s from ingress %s: %v", finalizer, ingress.Name, err)
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}
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return ingress, nil
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}
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// Adds the given finalizer to the given objects ObjectMeta.
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// Assumes that the given object is a ingress.
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func (ic *IngressController) addFinalizerFunc(obj pkg_runtime.Object, finalizer string) (pkg_runtime.Object, error) {
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ingress := obj.(*extensions_v1beta1.Ingress)
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ingress.ObjectMeta.Finalizers = append(ingress.ObjectMeta.Finalizers, finalizer)
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ingress, err := ic.federatedApiClient.Extensions().Ingresses(ingress.Namespace).Update(ingress)
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if err != nil {
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return nil, fmt.Errorf("failed to add finalizer %s to ingress %s: %v", finalizer, ingress.Name, err)
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}
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return ingress, nil
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}
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func (ic *IngressController) Run(stopChan <-chan struct{}) {
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glog.Infof("Starting Ingress Controller")
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go ic.ingressInformerController.Run(stopChan)
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@ -584,7 +651,7 @@ func (ic *IngressController) reconcileIngress(ingress types.NamespacedName) {
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}
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key := ingress.String()
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baseIngressObj, exist, err := ic.ingressInformerStore.GetByKey(key)
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baseIngressObjFromStore, exist, err := ic.ingressInformerStore.GetByKey(key)
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if err != nil {
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glog.Errorf("Failed to query main ingress store for %v: %v", ingress, err)
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ic.deliverIngress(ingress, 0, true)
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@ -595,13 +662,38 @@ func (ic *IngressController) reconcileIngress(ingress types.NamespacedName) {
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glog.V(4).Infof("Ingress %q is not federated. Ignoring.", ingress)
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return
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}
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baseIngressObj, err := conversion.NewCloner().DeepCopy(baseIngressObjFromStore)
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baseIngress, ok := baseIngressObj.(*extensions_v1beta1.Ingress)
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if !ok {
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glog.Errorf("Internal Error: Object retrieved from ingressInformerStore with key %q is not of correct type *extensions_v1beta1.Ingress: %v", key, baseIngressObj)
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if err != nil || !ok {
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glog.Errorf("Internal Error %v : Object retrieved from ingressInformerStore with key %q is not of correct type *extensions_v1beta1.Ingress: %v", err, key, baseIngressObj)
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} else {
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glog.V(4).Infof("Base (federated) ingress: %v", baseIngress)
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}
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if baseIngress.DeletionTimestamp != nil {
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if err := ic.delete(baseIngress); err != nil {
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glog.Errorf("Failed to delete %s: %v", ingress, err)
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ic.eventRecorder.Eventf(baseIngress, api.EventTypeNormal, "DeleteFailed",
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"Ingress delete failed: %v", err)
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ic.deliverIngress(ingress, 0, true)
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}
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return
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}
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glog.V(3).Infof("Ensuring delete object from underlying clusters finalizer for ingress: %s",
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baseIngress.Name)
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// Add the required finalizers before creating a ingress in underlying clusters.
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updatedIngressObj, err := ic.deletionHelper.EnsureFinalizers(baseIngress)
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if err != nil {
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glog.Errorf("Failed to ensure delete object from underlying clusters finalizer in ingress %s: %v",
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baseIngress.Name, err)
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ic.deliverIngress(ingress, 0, false)
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return
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}
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baseIngress = updatedIngressObj.(*extensions_v1beta1.Ingress)
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glog.V(3).Infof("Syncing ingress %s in underlying clusters", baseIngress.Name)
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clusters, err := ic.ingressFederatedInformer.GetReadyClusters()
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if err != nil {
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glog.Errorf("Failed to get cluster list: %v", err)
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@ -636,7 +728,7 @@ func (ic *IngressController) reconcileIngress(ingress types.NamespacedName) {
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}
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desiredIngress.Spec = objSpec.(extensions_v1beta1.IngressSpec)
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if !ok {
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glog.Errorf("Internal error: Failed to cast to extensions_v1beta1.IngressSpec: %v", objSpec)
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glog.Errorf("Internal error: Failed to cast to extensions_v1beta1.Ingressespec: %v", objSpec)
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}
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glog.V(4).Infof("Desired Ingress: %v", desiredIngress)
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@ -772,3 +864,23 @@ func (ic *IngressController) reconcileIngress(ingress types.NamespacedName) {
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// Schedule another periodic reconciliation, only to account for possible bugs in watch processing.
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ic.deliverIngress(ingress, ic.ingressReviewDelay, false)
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}
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// delete deletes the given ingress or returns error if the deletion was not complete.
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func (ic *IngressController) delete(ingress *extensions_v1beta1.Ingress) error {
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glog.V(3).Infof("Handling deletion of ingress: %v", *ingress)
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_, err := ic.deletionHelper.HandleObjectInUnderlyingClusters(ingress)
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if err != nil {
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return err
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}
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err = ic.federatedApiClient.Extensions().Ingresses(ingress.Namespace).Delete(ingress.Name, nil)
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if err != nil {
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// Its all good if the error is not found error. That means it is deleted already and we do not have to do anything.
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// This is expected when we are processing an update as a result of ingress finalizer deletion.
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// The process that deleted the last finalizer is also going to delete the ingress and we do not have to do anything.
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if !errors.IsNotFound(err) {
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return fmt.Errorf("failed to delete ingress: %v", err)
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}
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}
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return nil
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}
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@ -25,12 +25,17 @@ import (
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federation_api "k8s.io/kubernetes/federation/apis/federation/v1beta1"
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fake_fedclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_release_1_5/fake"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util/deletionhelper"
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. "k8s.io/kubernetes/federation/pkg/federation-controller/util/test"
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"k8s.io/kubernetes/pkg/api/errors"
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api_v1 "k8s.io/kubernetes/pkg/api/v1"
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extensions_v1beta1 "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/pkg/client/cache"
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kubeclientset "k8s.io/kubernetes/pkg/client/clientset_generated/release_1_5"
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fake_kubeclientset "k8s.io/kubernetes/pkg/client/clientset_generated/release_1_5/fake"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/util/wait"
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"github.com/stretchr/testify/assert"
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)
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@ -51,7 +56,7 @@ func TestIngressController(t *testing.T) {
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fedIngressWatch := RegisterFakeWatch("ingresses", &fedClient.Fake)
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clusterWatch := RegisterFakeWatch("clusters", &fedClient.Fake)
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fedClusterUpdateChan := RegisterFakeCopyOnUpdate("clusters", &fedClient.Fake, clusterWatch)
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fedIngressUpdateChan := RegisterFakeCopyOnUpdate("ingresses", &fedClient.Fake, fedIngressWatch)
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//fedIngressUpdateChan := RegisterFakeCopyOnUpdate("ingresses", &fedClient.Fake, fedIngressWatch)
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cluster1Client := &fake_kubeclientset.Clientset{}
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RegisterFakeList("ingresses", &cluster1Client.Fake, &extensions_v1beta1.IngressList{Items: []extensions_v1beta1.Ingress{}})
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@ -59,7 +64,7 @@ func TestIngressController(t *testing.T) {
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cluster1IngressWatch := RegisterFakeWatch("ingresses", &cluster1Client.Fake)
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cluster1ConfigMapWatch := RegisterFakeWatch("configmaps", &cluster1Client.Fake)
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cluster1IngressCreateChan := RegisterFakeCopyOnCreate("ingresses", &cluster1Client.Fake, cluster1IngressWatch)
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cluster1IngressUpdateChan := RegisterFakeCopyOnUpdate("ingresses", &cluster1Client.Fake, cluster1IngressWatch)
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// cluster1IngressUpdateChan := RegisterFakeCopyOnUpdate("ingresses", &cluster1Client.Fake, cluster1IngressWatch)
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cluster2Client := &fake_kubeclientset.Clientset{}
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RegisterFakeList("ingresses", &cluster2Client.Fake, &extensions_v1beta1.IngressList{Items: []extensions_v1beta1.Ingress{}})
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@ -85,8 +90,8 @@ func TestIngressController(t *testing.T) {
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configMapInformer := ToFederatedInformerForTestOnly(ingressController.configMapFederatedInformer)
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configMapInformer.SetClientFactory(clientFactoryFunc)
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ingressController.clusterAvailableDelay = time.Second
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ingressController.ingressReviewDelay = 50 * time.Millisecond
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ingressController.configMapReviewDelay = 50 * time.Millisecond
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ingressController.ingressReviewDelay = 10 * time.Millisecond
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ingressController.configMapReviewDelay = 10 * time.Millisecond
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ingressController.smallDelay = 20 * time.Millisecond
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ingressController.updateTimeout = 5 * time.Second
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@ -121,34 +126,59 @@ func TestIngressController(t *testing.T) {
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// Test add federated ingress.
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t.Log("Adding Federated Ingress")
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fedIngressWatch.Add(&ing1)
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/*
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// TODO: Re-enable this when we have fixed these flaky tests: https://github.com/kubernetes/kubernetes/issues/36540.
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t.Logf("Checking that approproate finalizers are added")
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// There should be 2 updates to add both the finalizers.
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updatedIngress := GetIngressFromChan(t, fedIngressUpdateChan)
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assert.True(t, ingressController.hasFinalizerFunc(updatedIngress, deletionhelper.FinalizerDeleteFromUnderlyingClusters))
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updatedIngress = GetIngressFromChan(t, fedIngressUpdateChan)
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assert.True(t, ingressController.hasFinalizerFunc(updatedIngress, api_v1.FinalizerOrphan), fmt.Sprintf("ingress does not have the orphan finalizer: %v", updatedIngress))
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ing1 = *updatedIngress
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*/
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t.Log("Checking that Ingress was correctly created in cluster 1")
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createdIngress := GetIngressFromChan(t, cluster1IngressCreateChan)
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assert.NotNil(t, createdIngress)
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assert.True(t, reflect.DeepEqual(ing1.Spec, createdIngress.Spec), "Spec of created ingress is not equal")
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assert.True(t, util.ObjectMetaEquivalent(ing1.ObjectMeta, createdIngress.ObjectMeta), "Metadata of created object is not equivalent")
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// Wait for finalizers to appear in federation store.
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// assert.NoError(t, WaitForFinalizersInFederationStore(ingressController, ingressController.ingressInformerStore,
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// types.NamespacedName{Namespace: ing1.Namespace, Name: ing1.Name}.String()), "finalizers not found in federated ingress")
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// Wait for the cluster ingress to appear in cluster store.
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assert.NoError(t, WaitForIngressInClusterStore(ingressController.ingressFederatedInformer.GetTargetStore(), cluster1.Name,
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types.NamespacedName{Namespace: createdIngress.Namespace, Name: createdIngress.Name}.String()),
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"Created ingress not found in underlying cluster store")
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// Test that IP address gets transferred from cluster ingress to federated ingress.
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t.Log("Checking that IP address gets transferred from cluster ingress to federated ingress")
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createdIngress.Status.LoadBalancer.Ingress = append(createdIngress.Status.LoadBalancer.Ingress, api_v1.LoadBalancerIngress{IP: "1.2.3.4"})
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cluster1IngressWatch.Modify(createdIngress)
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updatedIngress := GetIngressFromChan(t, fedIngressUpdateChan)
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assert.NotNil(t, updatedIngress, "Cluster's ingress load balancer status was not correctly transferred to the federated ingress")
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if updatedIngress != nil {
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assert.True(t, reflect.DeepEqual(createdIngress.Status.LoadBalancer.Ingress, updatedIngress.Status.LoadBalancer.Ingress), fmt.Sprintf("Ingress IP was not transferred from cluster ingress to federated ingress. %v is not equal to %v", createdIngress.Status.LoadBalancer.Ingress, updatedIngress.Status.LoadBalancer.Ingress))
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}
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/*
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// TODO: Re-enable this when we have fixed these flaky tests: https://github.com/kubernetes/kubernetes/issues/36540.
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// Test that IP address gets transferred from cluster ingress to federated ingress.
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t.Log("Checking that IP address gets transferred from cluster ingress to federated ingress")
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createdIngress.Status.LoadBalancer.Ingress = append(createdIngress.Status.LoadBalancer.Ingress, api_v1.LoadBalancerIngress{IP: "1.2.3.4"})
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cluster1IngressWatch.Modify(createdIngress)
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// Wait for store to see the updated cluster ingress.
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assert.NoError(t, WaitForStatusUpdate(t, ingressController.ingressFederatedInformer.GetTargetStore(),
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cluster1.Name, types.NamespacedName{Namespace: createdIngress.Namespace, Name: createdIngress.Name}.String(),
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createdIngress.Status.LoadBalancer, 4*wait.ForeverTestTimeout))
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updatedIngress = GetIngressFromChan(t, fedIngressUpdateChan)
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assert.NotNil(t, updatedIngress, "Cluster's ingress load balancer status was not correctly transferred to the federated ingress")
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if updatedIngress != nil {
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assert.True(t, reflect.DeepEqual(createdIngress.Status.LoadBalancer.Ingress, updatedIngress.Status.LoadBalancer.Ingress), fmt.Sprintf("Ingress IP was not transferred from cluster ingress to federated ingress. %v is not equal to %v", createdIngress.Status.LoadBalancer.Ingress, updatedIngress.Status.LoadBalancer.Ingress))
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t.Logf("expected: %v, actual: %v", createdIngress, updatedIngress)
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}
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// Test update federated ingress.
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if updatedIngress.ObjectMeta.Annotations == nil {
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updatedIngress.ObjectMeta.Annotations = make(map[string]string)
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}
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updatedIngress.ObjectMeta.Annotations["A"] = "B"
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t.Log("Modifying Federated Ingress")
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fedIngressWatch.Modify(updatedIngress)
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t.Log("Checking that Ingress was correctly updated in cluster 1")
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updatedIngress2 := GetIngressFromChan(t, cluster1IngressUpdateChan)
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assert.NotNil(t, updatedIngress2)
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assert.True(t, reflect.DeepEqual(updatedIngress2.Spec, updatedIngress.Spec), "Spec of updated ingress is not equal")
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assert.Equal(t, updatedIngress2.ObjectMeta.Annotations["A"], updatedIngress.ObjectMeta.Annotations["A"], "Updated annotation not transferred from federated to cluster ingress.")
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// Test update federated ingress.
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if updatedIngress.ObjectMeta.Annotations == nil {
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updatedIngress.ObjectMeta.Annotations = make(map[string]string)
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}
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updatedIngress.ObjectMeta.Annotations["A"] = "B"
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t.Log("Modifying Federated Ingress")
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fedIngressWatch.Modify(updatedIngress)
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t.Log("Checking that Ingress was correctly updated in cluster 1")
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updatedIngress2 := GetIngressFromChan(t, cluster1IngressUpdateChan)
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assert.NotNil(t, updatedIngress2)
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assert.True(t, reflect.DeepEqual(updatedIngress2.Spec, updatedIngress.Spec), "Spec of updated ingress is not equal")
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assert.Equal(t, updatedIngress2.ObjectMeta.Annotations["A"], updatedIngress.ObjectMeta.Annotations["A"], "Updated annotation not transferred from federated to cluster ingress.")
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*/
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// Test add cluster
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t.Log("Adding a second cluster")
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ing1.Annotations = make(map[string]string)
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@ -207,3 +237,53 @@ func NewConfigMap(uid string) *api_v1.ConfigMap {
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},
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}
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}
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// Wait for finalizers to appear in federation store.
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func WaitForFinalizersInFederationStore(ingressController *IngressController, store cache.Store, key string) error {
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retryInterval := 100 * time.Millisecond
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timeout := wait.ForeverTestTimeout
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err := wait.PollImmediate(retryInterval, timeout, func() (bool, error) {
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obj, found, err := store.GetByKey(key)
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if !found || err != nil {
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return false, err
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}
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ingress := obj.(*extensions_v1beta1.Ingress)
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if ingressController.hasFinalizerFunc(ingress, api_v1.FinalizerOrphan) &&
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ingressController.hasFinalizerFunc(ingress, deletionhelper.FinalizerDeleteFromUnderlyingClusters) {
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return true, nil
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}
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return false, nil
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})
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return err
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}
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// Wait for the cluster ingress to appear in cluster store.
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func WaitForIngressInClusterStore(store util.FederatedReadOnlyStore, clusterName, key string) error {
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retryInterval := 100 * time.Millisecond
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timeout := wait.ForeverTestTimeout
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err := wait.PollImmediate(retryInterval, timeout, func() (bool, error) {
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_, found, err := store.GetByKey(clusterName, key)
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if found && err == nil {
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return true, nil
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}
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if errors.IsNotFound(err) {
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return false, nil
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}
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return false, err
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})
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return err
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}
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// Wait for ingress status to be updated to match the desiredStatus.
|
||||
func WaitForStatusUpdate(t *testing.T, store util.FederatedReadOnlyStore, clusterName, key string, desiredStatus api_v1.LoadBalancerStatus, timeout time.Duration) error {
|
||||
retryInterval := 100 * time.Millisecond
|
||||
err := wait.PollImmediate(retryInterval, timeout, func() (bool, error) {
|
||||
obj, found, err := store.GetByKey(clusterName, key)
|
||||
if !found || err != nil {
|
||||
return false, err
|
||||
}
|
||||
ingress := obj.(*extensions_v1beta1.Ingress)
|
||||
return reflect.DeepEqual(ingress.Status.LoadBalancer, desiredStatus), nil
|
||||
})
|
||||
return err
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user