5551ec347a
This patchset enables VINO controller to pass variables to vino-builder that are generated dynamically by IPAM module. Also it takes IP address of the vino bridge and injects it into node annotation togather with IPAM values. Vino-builder polls a k8s node object to get these values before proceeding. Change-Id: I5b4e23df0fa4fa980b2a6724468bc6f2d9546409
548 lines
17 KiB
Go
548 lines
17 KiB
Go
/*
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controllers
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import (
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"context"
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"fmt"
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"os"
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"time"
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"github.com/go-logr/logr"
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appsv1 "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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apierror "k8s.io/apimachinery/pkg/api/errors"
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apimeta "k8s.io/apimachinery/pkg/api/meta"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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kerror "k8s.io/apimachinery/pkg/util/errors"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/builder"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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"sigs.k8s.io/yaml"
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vinov1 "vino/pkg/api/v1"
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"vino/pkg/ipam"
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)
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const (
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TemplateDefaultKey = "template"
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DaemonSetTemplateDefaultName = "vino-daemonset-template"
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ContainerNameLibvirt = "libvirt"
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ConfigMapKeyVinoSpec = "vino-spec"
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)
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// VinoReconciler reconciles a Vino object
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type VinoReconciler struct {
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client.Client
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Scheme *runtime.Scheme
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Ipam *ipam.Ipam
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}
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// +kubebuilder:rbac:groups=airship.airshipit.org,resources=vinoes,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=airship.airshipit.org,resources=vinoes/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=airship.airshipit.org,resources=ippools,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups="",resources=pods,verbs=list;watch
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// +kubebuilder:rbac:groups="",resources=nodes,verbs=get;list;watch;update;patch
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// +kubebuilder:rbac:groups="",resources=secrets,verbs=get;list;watch;create;update;patch
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func (r *VinoReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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logger := logr.FromContext(ctx)
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vino := &vinov1.Vino{}
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var err error
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if err = r.Get(ctx, req.NamespacedName, vino); err != nil {
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if apierror.IsNotFound(err) {
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return ctrl.Result{}, nil
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}
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err = fmt.Errorf("failed to get vino CR: %w", err)
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return ctrl.Result{}, err
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}
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if !controllerutil.ContainsFinalizer(vino, vinov1.VinoFinalizer) {
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logger.Info("adding finalizer to new vino object")
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controllerutil.AddFinalizer(vino, vinov1.VinoFinalizer)
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if err = r.Update(ctx, vino); err != nil {
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err = fmt.Errorf("unable to register finalizer: %w", err)
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return ctrl.Result{}, err
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}
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}
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if !vino.ObjectMeta.DeletionTimestamp.IsZero() {
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return ctrl.Result{}, r.finalize(ctx, vino)
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}
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readyCondition := apimeta.FindStatusCondition(vino.Status.Conditions, vinov1.ConditionTypeReady)
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if readyCondition == nil || readyCondition.ObservedGeneration != vino.GetGeneration() {
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vinov1.VinoProgressing(vino)
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if err = r.patchStatus(ctx, vino); err != nil {
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err = fmt.Errorf("unable to patch status after progressing: %w", err)
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return ctrl.Result{Requeue: true}, err
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}
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}
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err = r.reconcileConfigMap(ctx, vino)
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if err != nil {
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return ctrl.Result{Requeue: true}, err
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}
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err = r.reconcileDaemonSet(ctx, vino)
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if err != nil {
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return ctrl.Result{Requeue: true}, err
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}
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vinov1.VinoReady(vino)
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if err := r.patchStatus(ctx, vino); err != nil {
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err = fmt.Errorf("unable to patch status after reconciliation: %w", err)
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return ctrl.Result{Requeue: true}, err
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}
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logger.Info("successfully reconciled VINO CR")
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return ctrl.Result{}, nil
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}
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func (r *VinoReconciler) reconcileConfigMap(ctx context.Context, vino *vinov1.Vino) error {
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err := r.ensureConfigMap(ctx, vino)
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if err != nil {
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err = fmt.Errorf("could not reconcile ConfigMap: %w", err)
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionFalse,
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Reason: vinov1.ReconciliationFailedReason,
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Message: err.Error(),
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Type: vinov1.ConditionTypeReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionFalse,
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Reason: vinov1.ReconciliationFailedReason,
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Message: err.Error(),
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Type: vinov1.ConditionTypeConfigMapReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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if patchStatusErr := r.patchStatus(ctx, vino); patchStatusErr != nil {
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err = kerror.NewAggregate([]error{err, patchStatusErr})
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err = fmt.Errorf("unable to patch status after ConfigMap reconciliation failed: %w", err)
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}
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return err
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}
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionTrue,
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Reason: vinov1.ReconciliationSucceededReason,
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Message: "ConfigMap reconciled",
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Type: vinov1.ConditionTypeConfigMapReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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if err = r.patchStatus(ctx, vino); err != nil {
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err = fmt.Errorf("unable to patch status after ConfigMap reconciliation succeeded: %w", err)
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return err
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}
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return nil
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}
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func (r *VinoReconciler) ensureConfigMap(ctx context.Context, vino *vinov1.Vino) error {
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logger := logr.FromContext(ctx)
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generatedCM, err := r.buildConfigMap(ctx, vino)
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if err != nil {
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return err
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}
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logger.Info("successfully built config map", "new config map data", generatedCM.Data)
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currentCM, err := r.getCurrentConfigMap(ctx, vino)
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if err != nil {
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return err
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}
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if currentCM == nil {
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logger.Info("current config map is not present in a cluster creating newly generated one")
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return applyRuntimeObject(
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ctx,
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types.NamespacedName{Name: generatedCM.Name, Namespace: generatedCM.Namespace},
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generatedCM,
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r.Client)
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}
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logger.Info("generated config map", "current config map data", currentCM.Data)
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if needsUpdate(generatedCM, currentCM) {
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logger.Info("current config map needs an update, trying to update it")
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return r.Client.Update(ctx, generatedCM)
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}
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return nil
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}
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func (r *VinoReconciler) buildConfigMap(ctx context.Context, vino *vinov1.Vino) (
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*corev1.ConfigMap, error) {
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logr.FromContext(ctx).Info("Generating new config map for vino object")
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data, err := yaml.Marshal(vino.Spec)
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if err != nil {
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return nil, err
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}
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return &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: getRuntimeNamespace(),
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Name: r.getConfigMapName(vino),
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},
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Data: map[string]string{
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ConfigMapKeyVinoSpec: string(data),
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},
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}, nil
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}
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func (r *VinoReconciler) getConfigMapName(vino *vinov1.Vino) string {
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return fmt.Sprintf("%s-%s", vino.Namespace, vino.Name)
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}
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func (r *VinoReconciler) getDaemonSetName(vino *vinov1.Vino) string {
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return fmt.Sprintf("%s-%s", vino.Namespace, vino.Name)
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}
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func (r *VinoReconciler) getCurrentConfigMap(ctx context.Context, vino *vinov1.Vino) (*corev1.ConfigMap, error) {
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logr.FromContext(ctx).Info("Getting current config map for vino object")
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cm := &corev1.ConfigMap{}
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err := r.Get(ctx, types.NamespacedName{
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Name: vino.Name,
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Namespace: vino.Namespace,
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}, cm)
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if err != nil {
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if !apierror.IsNotFound(err) {
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return cm, err
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}
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return nil, nil
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}
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return cm, nil
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}
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func (r *VinoReconciler) patchStatus(ctx context.Context, vino *vinov1.Vino) error {
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key := client.ObjectKeyFromObject(vino)
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latest := &vinov1.Vino{}
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if err := r.Client.Get(ctx, key, latest); err != nil {
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return err
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}
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return r.Client.Status().Patch(ctx, vino, client.MergeFrom(latest))
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}
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func needsUpdate(generated, current *corev1.ConfigMap) bool {
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for key, value := range generated.Data {
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if current.Data[key] != value {
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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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func (r *VinoReconciler) reconcileDaemonSet(ctx context.Context, vino *vinov1.Vino) error {
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err := r.ensureDaemonSet(ctx, vino)
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if err != nil {
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err = fmt.Errorf("could not reconcile DaemonSet: %w", err)
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionFalse,
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Reason: vinov1.ReconciliationFailedReason,
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Message: err.Error(),
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Type: vinov1.ConditionTypeReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionFalse,
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Reason: vinov1.ReconciliationFailedReason,
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Message: err.Error(),
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Type: vinov1.ConditionTypeDaemonSetReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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if patchStatusErr := r.patchStatus(ctx, vino); patchStatusErr != nil {
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err = kerror.NewAggregate([]error{err, patchStatusErr})
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err = fmt.Errorf("unable to patch status after DaemonSet reconciliation failed: %w", err)
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}
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return err
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}
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apimeta.SetStatusCondition(&vino.Status.Conditions, metav1.Condition{
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Status: metav1.ConditionTrue,
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Reason: vinov1.ReconciliationSucceededReason,
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Message: "DaemonSet reconciled",
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Type: vinov1.ConditionTypeDaemonSetReady,
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ObservedGeneration: vino.GetGeneration(),
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})
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if err := r.patchStatus(ctx, vino); err != nil {
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err = fmt.Errorf("unable to patch status after DaemonSet reconciliation succeeded: %w", err)
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return err
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}
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return nil
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}
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func (r *VinoReconciler) ensureDaemonSet(ctx context.Context, vino *vinov1.Vino) error {
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ds, err := r.daemonSet(ctx, vino)
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if err != nil {
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return err
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}
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r.decorateDaemonSet(ctx, ds, vino)
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existDS := &appsv1.DaemonSet{}
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err = r.Get(ctx, types.NamespacedName{Name: ds.Name, Namespace: ds.Namespace}, existDS)
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switch {
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case apierror.IsNotFound(err):
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err = r.Create(ctx, ds)
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case err == nil:
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err = r.Patch(ctx, ds, client.MergeFrom(existDS))
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}
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if err != nil {
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return err
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}
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// TODO (kkalynovskyi) this function needs to add owner reference on the daemonset set and watch
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// controller should watch for changes in daemonset to reconcile if it breaks, and change status
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// of the vino object
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// controlleruti.SetControllerReference(vino, ds, r.scheme)
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scheduledTimeoutCtx, cancel := context.WithTimeout(ctx, time.Second*180)
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defer cancel()
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logger := logr.FromContext(ctx)
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logger.Info("Waiting for daemonset to become scheduled")
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if err = r.waitDaemonSet(scheduledTimeoutCtx, dsScheduled, ds); err != nil {
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return err
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}
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if err = r.reconcileBMHs(ctx, vino); err != nil {
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return err
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}
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waitTimeoutCtx, cancel := context.WithTimeout(ctx, time.Second*180)
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defer cancel()
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logger.Info("Waiting for daemonset to become ready")
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return r.waitDaemonSet(waitTimeoutCtx, dsReady, ds)
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}
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func (r *VinoReconciler) decorateDaemonSet(ctx context.Context, ds *appsv1.DaemonSet, vino *vinov1.Vino) {
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volume := "vino-spec"
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ds.Spec.Template.Spec.NodeSelector = vino.Spec.NodeSelector.MatchLabels
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ds.Namespace = getRuntimeNamespace()
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ds.Name = r.getDaemonSetName(vino)
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found := false
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for _, vol := range ds.Spec.Template.Spec.Volumes {
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if vol.Name == "vino-spec" {
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found = true
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break
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}
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}
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if !found {
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ds.Spec.Template.Spec.Volumes = append(ds.Spec.Template.Spec.Volumes, corev1.Volume{
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Name: volume,
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VolumeSource: corev1.VolumeSource{
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ConfigMap: &corev1.ConfigMapVolumeSource{
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LocalObjectReference: corev1.LocalObjectReference{Name: r.getConfigMapName(vino)},
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},
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},
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})
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}
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// add vino spec to each container
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for i, c := range ds.Spec.Template.Spec.Containers {
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found = false
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for _, mount := range c.VolumeMounts {
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if mount.Name == volume {
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found = true
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}
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}
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if !found {
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logr.FromContext(ctx).Info("volume mount with vino spec is not found",
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"vino instance", vino.Namespace+"/"+vino.Name,
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"container name", c.Name,
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)
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ds.Spec.Template.Spec.Containers[i].VolumeMounts = append(
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ds.Spec.Template.Spec.Containers[i].VolumeMounts, corev1.VolumeMount{
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MountPath: "/vino/spec",
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Name: volume,
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ReadOnly: true,
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SubPath: ConfigMapKeyVinoSpec,
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})
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}
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}
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// TODO develop logic to derive all required ENV variables from VINO CR, and pass them
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// to setENV function instead
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if vino.Spec.VMBridge != "" {
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setEnv(ctx, ds, vino)
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}
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// this will help avoid colisions if we have two vino CRs in the same namespace
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ds.Spec.Selector.MatchLabels[vinov1.VinoLabelDSNameSelector] = vino.Name
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ds.Spec.Template.ObjectMeta.Labels[vinov1.VinoLabelDSNameSelector] = vino.Name
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ds.Spec.Selector.MatchLabels[vinov1.VinoLabelDSNamespaceSelector] = vino.Namespace
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ds.Spec.Template.ObjectMeta.Labels[vinov1.VinoLabelDSNamespaceSelector] = vino.Namespace
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}
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func setEnv(ctx context.Context, ds *appsv1.DaemonSet, vino *vinov1.Vino) {
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for i, c := range ds.Spec.Template.Spec.Containers {
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var set bool
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for j, envVar := range c.Env {
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if envVar.Name == vinov1.EnvVarVMInterfaceName {
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logr.FromContext(ctx).Info("found env variable with vm interface name on daemonset template, overriding it",
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"vino instance", vino.Namespace+"/"+vino.Name,
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"container name", c.Name,
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"value", envVar.Value,
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)
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ds.Spec.Template.Spec.Containers[i].Env[j].Value = vino.Spec.VMBridge
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set = true
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break
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}
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}
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if !set {
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ds.Spec.Template.Spec.Containers[i].Env = append(
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ds.Spec.Template.Spec.Containers[i].Env, corev1.EnvVar{
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Name: vinov1.EnvVarVMInterfaceName,
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Value: vino.Spec.VMBridge,
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},
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)
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}
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}
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}
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func (r *VinoReconciler) waitDaemonSet(ctx context.Context, check dsWaitCondition, ds *appsv1.DaemonSet) error {
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logger := logr.FromContext(ctx).WithValues(
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"daemonset", ds.Namespace+"/"+ds.Name)
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for {
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select {
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case <-ctx.Done():
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logger.Info("context canceled")
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return ctx.Err()
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default:
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getDS := &appsv1.DaemonSet{}
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err := r.Get(ctx, types.NamespacedName{
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Name: ds.Name,
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Namespace: ds.Namespace,
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}, getDS)
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if err != nil {
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logger.Info("received error while waiting for ds to reach desired condition, sleeping",
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"error", err.Error())
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} else {
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logger.Info("checking daemonset status", "status", getDS.Status)
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if check(getDS) {
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logger.Info("DaemonSet is in ready status")
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return nil
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}
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logger.Info("DaemonSet is not in ready status, rechecking in 2 seconds")
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}
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time.Sleep(10 * time.Second)
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}
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}
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}
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func (r *VinoReconciler) daemonSet(ctx context.Context, vino *vinov1.Vino) (*appsv1.DaemonSet, error) {
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dsTemplate := vino.Spec.DaemonSetOptions.Template
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logger := logr.FromContext(ctx).WithValues("DaemonSetTemplate", dsTemplate)
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cm := &corev1.ConfigMap{}
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if dsTemplate == (vinov1.NamespacedName{}) {
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logger.Info("using default configmap for daemonset template")
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dsTemplate.Name = DaemonSetTemplateDefaultName
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dsTemplate.Namespace = getRuntimeNamespace()
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}
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err := r.Get(ctx, types.NamespacedName{
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Name: dsTemplate.Name,
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Namespace: dsTemplate.Namespace,
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}, cm)
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if err != nil {
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// TODO check error if it doesn't exist, we should requeue request and wait for the template instead
|
|
logger.Info("failed to get DaemonSet template does not exist in cluster", "error", err.Error())
|
|
return nil, err
|
|
}
|
|
|
|
template, exist := cm.Data[TemplateDefaultKey]
|
|
if !exist {
|
|
logger.Info("malformed template provided data doesn't have key " + TemplateDefaultKey)
|
|
return nil, fmt.Errorf("malformed template provided data doesn't have key " + TemplateDefaultKey)
|
|
}
|
|
|
|
ds := &appsv1.DaemonSet{}
|
|
err = yaml.Unmarshal([]byte(template), ds)
|
|
if err != nil {
|
|
logger.Info("failed to unmarshal daemonset template", "error", err.Error())
|
|
return nil, err
|
|
}
|
|
|
|
return ds, nil
|
|
}
|
|
|
|
func (r *VinoReconciler) SetupWithManager(mgr ctrl.Manager) error {
|
|
return ctrl.NewControllerManagedBy(mgr).
|
|
For(&vinov1.Vino{}, builder.WithPredicates(
|
|
predicate.GenerationChangedPredicate{},
|
|
)).
|
|
Complete(r)
|
|
}
|
|
|
|
func (r *VinoReconciler) finalize(ctx context.Context, vino *vinov1.Vino) error {
|
|
// TODO aggregate errors instead
|
|
if err := r.Delete(ctx,
|
|
&appsv1.DaemonSet{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: r.getDaemonSetName(vino), Namespace: getRuntimeNamespace(),
|
|
},
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
if err := r.Delete(ctx,
|
|
&corev1.ConfigMap{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: r.getConfigMapName(vino), Namespace: getRuntimeNamespace(),
|
|
},
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
controllerutil.RemoveFinalizer(vino, vinov1.VinoFinalizer)
|
|
return r.Update(ctx, vino)
|
|
}
|
|
|
|
func applyRuntimeObject(ctx context.Context, key client.ObjectKey, obj client.Object, c client.Client) error {
|
|
getObj := obj
|
|
err := c.Get(ctx, key, getObj)
|
|
switch {
|
|
case apierror.IsNotFound(err):
|
|
err = c.Create(ctx, obj)
|
|
case err == nil:
|
|
err = c.Patch(ctx, obj, client.MergeFrom(getObj))
|
|
}
|
|
return err
|
|
}
|
|
|
|
func getRuntimeNamespace() string {
|
|
return os.Getenv("RUNTIME_NAMESPACE")
|
|
}
|
|
|
|
func dsScheduled(ds *appsv1.DaemonSet) bool {
|
|
return ds.Status.DesiredNumberScheduled != 0 && ds.Status.DesiredNumberScheduled == ds.Status.CurrentNumberScheduled
|
|
}
|
|
|
|
func dsReady(ds *appsv1.DaemonSet) bool {
|
|
return ds.Status.DesiredNumberScheduled != 0 && ds.Status.DesiredNumberScheduled == ds.Status.NumberReady
|
|
}
|
|
|
|
type dsWaitCondition func(ds *appsv1.DaemonSet) bool
|