+
lastAttemptedConfigDigest
string
diff --git a/internal/controller/helmrelease_controller.go b/internal/controller/helmrelease_controller.go
index 3bef30141..fd1443077 100644
--- a/internal/controller/helmrelease_controller.go
+++ b/internal/controller/helmrelease_controller.go
@@ -60,10 +60,12 @@ import (
"github.com/fluxcd/helm-controller/internal/action"
"github.com/fluxcd/helm-controller/internal/chartutil"
"github.com/fluxcd/helm-controller/internal/digest"
+ "github.com/fluxcd/helm-controller/internal/features"
"github.com/fluxcd/helm-controller/internal/kube"
"github.com/fluxcd/helm-controller/internal/loader"
intpredicates "github.com/fluxcd/helm-controller/internal/predicates"
intreconcile "github.com/fluxcd/helm-controller/internal/reconcile"
+ "github.com/fluxcd/helm-controller/internal/release"
)
// +kubebuilder:rbac:groups=helm.toolkit.fluxcd.io,resources=helmreleases,verbs=get;list;watch;create;update;patch;delete
@@ -288,6 +290,16 @@ func (r *HelmReleaseReconciler) reconcileRelease(ctx context.Context, patchHelpe
return ctrl.Result{}, err
}
+ // Attempt to adopt "legacy" v2beta1 release state on a best-effort basis.
+ // If this fails, the controller will fall back to performing an upgrade
+ // to settle on the desired state.
+ // TODO(hidde): remove this in a future release.
+ if ok, _ := features.Enabled(features.AdoptLegacyReleases); ok {
+ if err := r.adoptLegacyRelease(ctx, getter, obj); err != nil {
+ log.Error(err, "failed to adopt v2beta1 release state")
+ }
+ }
+
// If the release target configuration has changed, we need to uninstall the
// previous release target first. If we did not do this, the installation would
// fail due to resources already existing.
@@ -315,6 +327,7 @@ func (r *HelmReleaseReconciler) reconcileRelease(ctx context.Context, patchHelpe
obj.Status.LastAttemptedRevision = loadedChart.Metadata.Version
obj.Status.LastAttemptedConfigDigest = chartutil.DigestValues(digest.Canonical, values).String()
obj.Status.LastAttemptedValuesChecksum = ""
+ obj.Status.LastReleaseRevision = 0
// Construct config factory for any further Helm actions.
cfg, err := action.NewConfigFactory(getter,
@@ -508,6 +521,46 @@ func (r *HelmReleaseReconciler) checkDependencies(ctx context.Context, obj *v2.H
return nil
}
+// adoptLegacyRelease attempts to adopt a v2beta1 release into a v2beta2
+// release.
+// This is done by retrieving the last successful release from the Helm storage
+// and converting it to a v2beta2 release snapshot.
+// If the v2beta1 release has already been adopted, this function is a no-op.
+func (r *HelmReleaseReconciler) adoptLegacyRelease(ctx context.Context, getter genericclioptions.RESTClientGetter, obj *v2.HelmRelease) error {
+ if obj.Status.LastReleaseRevision < 1 || len(obj.Status.History) > 0 {
+ return nil
+ }
+
+ // Construct config factory for current release.
+ cfg, err := action.NewConfigFactory(getter,
+ action.WithStorage(action.DefaultStorageDriver, obj.GetStorageNamespace()),
+ action.WithStorageLog(action.NewDebugLog(ctrl.LoggerFrom(ctx).V(logger.TraceLevel))),
+ )
+
+ // Get the last successful release based on the observation for the v2beta1
+ // object.
+ rls, err := cfg.NewStorage().Get(obj.GetReleaseName(), obj.Status.LastReleaseRevision)
+ if err != nil {
+ return err
+ }
+
+ // Convert it to a v2beta2 release snapshot.
+ snap := release.ObservedToSnapshot(release.ObserveRelease(rls))
+
+ // If tests are enabled, include them as well.
+ if obj.GetTest().Enable {
+ snap.SetTestHooks(release.TestHooksFromRelease(rls))
+ }
+
+ // Adopt it as the current release in the history.
+ obj.Status.History = append(obj.Status.History, snap)
+
+ // Erase the last release revision from the status.
+ obj.Status.LastReleaseRevision = 0
+
+ return nil
+}
+
func (r *HelmReleaseReconciler) buildRESTClientGetter(ctx context.Context, obj *v2.HelmRelease) (genericclioptions.RESTClientGetter, error) {
opts := []kube.Option{
kube.WithNamespace(obj.GetReleaseNamespace()),
diff --git a/internal/controller/helmrelease_controller_test.go b/internal/controller/helmrelease_controller_test.go
index 47f07848d..6331e953c 100644
--- a/internal/controller/helmrelease_controller_test.go
+++ b/internal/controller/helmrelease_controller_test.go
@@ -607,7 +607,7 @@ func TestHelmReleaseReconciler_reconcileRelease(t *testing.T) {
Spec: v2.HelmReleaseSpec{
// Trigger a failure by setting an invalid storage namespace,
// preventing the release from actually being installed.
- // This allows us to just test the , without
+ // This allows us to just test the values being set, without
// having to facilitate a full install.
StorageNamespace: "not-exist",
Values: &apiextensionsv1.JSON{
@@ -1404,6 +1404,174 @@ func TestHelmReleaseReconciler_checkDependencies(t *testing.T) {
}
}
+func TestHelmReleaseReconciler_adoptLegacyRelease(t *testing.T) {
+ tests := []struct {
+ name string
+ releases func(namespace string) []*helmrelease.Release
+ spec func(spec *v2.HelmReleaseSpec)
+ status v2.HelmReleaseStatus
+ expectHistory func(releases []*helmrelease.Release) v2.Snapshots
+ expectLastReleaseRevision int
+ wantErr bool
+ }{
+ {
+ name: "adopts last release revision",
+ releases: func(namespace string) []*helmrelease.Release {
+ return []*helmrelease.Release{
+ testutil.BuildRelease(&helmrelease.MockReleaseOptions{
+ Name: "orphaned",
+ Namespace: namespace,
+ Version: 6,
+ Chart: testutil.BuildChart(),
+ Status: helmrelease.StatusDeployed,
+ }, testutil.ReleaseWithTestHook()),
+ }
+ },
+ spec: func(spec *v2.HelmReleaseSpec) {
+ spec.ReleaseName = "orphaned"
+ },
+ status: v2.HelmReleaseStatus{
+ LastReleaseRevision: 6,
+ },
+ expectHistory: func(releases []*helmrelease.Release) v2.Snapshots {
+ return v2.Snapshots{
+ release.ObservedToSnapshot(release.ObserveRelease(releases[0])),
+ }
+ },
+ expectLastReleaseRevision: 0,
+ },
+ {
+ name: "includes test hooks if enabled",
+ releases: func(namespace string) []*helmrelease.Release {
+ return []*helmrelease.Release{
+ testutil.BuildRelease(&helmrelease.MockReleaseOptions{
+ Name: "orphaned-with-hooks",
+ Namespace: namespace,
+ Version: 3,
+ Chart: testutil.BuildChart(testutil.ChartWithTestHook()),
+ Status: helmrelease.StatusDeployed,
+ }, testutil.ReleaseWithTestHook()),
+ }
+ },
+ spec: func(spec *v2.HelmReleaseSpec) {
+ spec.ReleaseName = "orphaned-with-hooks"
+ spec.Test = &v2.Test{
+ Enable: true,
+ }
+ },
+ status: v2.HelmReleaseStatus{
+ LastReleaseRevision: 3,
+ },
+ expectHistory: func(releases []*helmrelease.Release) v2.Snapshots {
+ snap := release.ObservedToSnapshot(release.ObserveRelease(releases[0]))
+ snap.SetTestHooks(release.TestHooksFromRelease(releases[0]))
+
+ return v2.Snapshots{
+ snap,
+ }
+ },
+ expectLastReleaseRevision: 0,
+ },
+ {
+ name: "non-existing release",
+ spec: func(spec *v2.HelmReleaseSpec) {
+ spec.ReleaseName = "non-existing"
+ },
+ status: v2.HelmReleaseStatus{
+ LastReleaseRevision: 2,
+ },
+ expectLastReleaseRevision: 2,
+ wantErr: true,
+ },
+ {
+ name: "without last release revision",
+ status: v2.HelmReleaseStatus{
+ LastReleaseRevision: 0,
+ },
+ expectHistory: func(releases []*helmrelease.Release) v2.Snapshots {
+ return nil
+ },
+ expectLastReleaseRevision: 0,
+ },
+ {
+ name: "with existing history",
+ status: v2.HelmReleaseStatus{
+ History: v2.Snapshots{
+ {
+ Name: "something",
+ },
+ },
+ LastReleaseRevision: 5,
+ },
+ expectHistory: func(releases []*helmrelease.Release) v2.Snapshots {
+ return v2.Snapshots{
+ {
+ Name: "something",
+ },
+ }
+ },
+ expectLastReleaseRevision: 5,
+ },
+ }
+
+ for _, tt := range tests {
+ t.Run(tt.name, func(t *testing.T) {
+ g := NewWithT(t)
+
+ // Create a test namespace for storing the Helm release mock.
+ ns, err := testEnv.CreateNamespace(context.TODO(), "adopt-release")
+ g.Expect(err).ToNot(HaveOccurred())
+ t.Cleanup(func() {
+ _ = testEnv.Delete(context.TODO(), ns)
+ })
+
+ // Mock a HelmRelease object.
+ obj := &v2.HelmRelease{
+ Spec: v2.HelmReleaseSpec{
+ StorageNamespace: ns.Name,
+ },
+ Status: tt.status,
+ }
+ if tt.spec != nil {
+ tt.spec(&obj.Spec)
+ }
+
+ r := &HelmReleaseReconciler{
+ Client: testEnv.Client,
+ GetClusterConfig: GetTestClusterConfig,
+ }
+
+ // Store the Helm release mock in the test namespace.
+ getter, err := r.buildRESTClientGetter(context.TODO(), obj)
+ g.Expect(err).ToNot(HaveOccurred())
+
+ cfg, err := action.NewConfigFactory(getter, action.WithStorage(helmdriver.SecretsDriverName, obj.GetStorageNamespace()))
+ g.Expect(err).ToNot(HaveOccurred())
+
+ var releases []*helmrelease.Release
+ if tt.releases != nil {
+ releases = tt.releases(ns.Name)
+ }
+ store := helmstorage.Init(cfg.Driver)
+ for _, rls := range releases {
+ g.Expect(store.Create(rls)).To(Succeed())
+ }
+
+ // Adopt the Helm release mock.
+ err = r.adoptLegacyRelease(context.TODO(), getter, obj)
+ g.Expect(err != nil).To(Equal(tt.wantErr), "unexpected error: %s", err)
+
+ // Verify the Helm release mock has been adopted.
+ var expectHistory v2.Snapshots
+ if tt.expectHistory != nil {
+ expectHistory = tt.expectHistory(releases)
+ }
+ g.Expect(obj.Status.History).To(Equal(expectHistory))
+ g.Expect(obj.Status.LastReleaseRevision).To(Equal(tt.expectLastReleaseRevision))
+ })
+ }
+}
+
func TestHelmReleaseReconciler_buildRESTClientGetter(t *testing.T) {
const (
namespace = "some-namespace"
diff --git a/internal/features/features.go b/internal/features/features.go
index 43e7a4425..4d39cad0f 100644
--- a/internal/features/features.go
+++ b/internal/features/features.go
@@ -47,6 +47,13 @@ const (
// OOMWatch enables the OOM watcher, which will gracefully shut down the controller
// when the memory usage exceeds the configured limit. This is disabled by default.
OOMWatch = "OOMWatch"
+
+ // AdoptLegacyReleases enables the adoption of the historical Helm release
+ // based on the status fields from a v2beta1 HelmRelease object.
+ // This is enabled by default to support an upgrade path from v2beta1 to v2beta2
+ // without the need to upgrade the Helm release. But it can be disabled to
+ // avoid potential abuse of the adoption mechanism.
+ AdoptLegacyReleases = "AdoptLegacyReleases"
)
var features = map[string]bool{
@@ -65,6 +72,9 @@ var features = map[string]bool{
// OOMWatch
// opt-in from v0.31
OOMWatch: false,
+ // AdoptLegacyReleases
+ // opt-out from v0.37
+ AdoptLegacyReleases: true,
}
// FeatureGates contains a list of all supported feature gates and
|