123 lines
3.9 KiB
Go
123 lines
3.9 KiB
Go
/*
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Copyright 2020 The Flux authors
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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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"strings"
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"time"
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"github.com/go-logr/logr"
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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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"k8s.io/client-go/util/retry"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"github.com/fluxcd/pkg/apis/meta"
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sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
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v2 "github.com/fluxcd/helm-controller/api/v2beta1"
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)
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// HelmChartWatcher watches HelmChart objects for revision changes and
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// triggers a sync for all the HelmReleases that reference a changed source.
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type HelmChartWatcher struct {
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client.Client
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Log logr.Logger
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Scheme *runtime.Scheme
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}
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// +kubebuilder:rbac:groups=source.toolkit.fluxcd.io,resources=helmcharts,verbs=get;list;watch
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// +kubebuilder:rbac:groups=source.toolkit.fluxcd.io,resources=helmcharts/status,verbs=get
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func (r *HelmChartWatcher) Reconcile(req ctrl.Request) (ctrl.Result, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
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defer cancel()
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var chart sourcev1.HelmChart
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if err := r.Get(ctx, req.NamespacedName, &chart); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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log := r.Log.WithValues(strings.ToLower(chart.Kind), req.NamespacedName)
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log.Info("new artifact detected", "revision", chart.GetArtifact().Revision)
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// Get the list of HelmReleases that are using this HelmChart.
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var list v2.HelmReleaseList
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if err := r.List(ctx, &list,
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client.MatchingFields{v2.SourceIndexKey: fmt.Sprintf("%s/%s", req.Namespace, req.Name)}); err != nil {
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log.Error(err, "unable to list HelmReleases")
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return ctrl.Result{}, err
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}
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// Trigger reconciliation for each HelmRelease using this HelmChart.
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for _, hr := range list.Items {
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namespacedName := types.NamespacedName{Namespace: hr.Namespace, Name: hr.Name}
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if err := r.requestReconciliation(ctx, hr); err != nil {
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log.Error(err, "unable to annotate HelmRelease", strings.ToLower(hr.Kind), namespacedName)
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continue
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}
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log.Info("requested immediate reconciliation", strings.ToLower(hr.Kind), namespacedName)
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}
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return ctrl.Result{}, nil
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}
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func (r *HelmChartWatcher) SetupWithManager(mgr ctrl.Manager) error {
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// Create a HelmRelease index based on the HelmChart name
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err := mgr.GetFieldIndexer().IndexField(context.TODO(), &v2.HelmRelease{}, v2.SourceIndexKey,
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func(rawObj runtime.Object) []string {
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hr := rawObj.(*v2.HelmRelease)
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return []string{fmt.Sprintf("%s/%s", hr.Spec.Chart.GetNamespace(hr.Namespace), hr.GetHelmChartName())}
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},
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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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return ctrl.NewControllerManagedBy(mgr).
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For(&sourcev1.HelmChart{}).
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WithEventFilter(HelmChartRevisionChangePredicate{}).
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Complete(r)
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}
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// requestReconciliation annotates the given HelmRelease to be reconciled immediately.
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func (r *HelmChartWatcher) requestReconciliation(ctx context.Context, hr v2.HelmRelease) error {
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firstTry := true
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return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
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if !firstTry {
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if err := r.Get(context.TODO(),
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types.NamespacedName{Namespace: hr.Namespace, Name: hr.Name},
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&hr,
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); err != nil {
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return err
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}
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}
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firstTry = false
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if hr.Annotations == nil {
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hr.Annotations = make(map[string]string)
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}
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hr.Annotations[meta.ReconcileRequestAnnotation] = metav1.Now().String()
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err = r.Update(ctx, &hr)
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return
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})
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}
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