controller: Add AdditiveCELDependencyCheck feature gate

Signed-off-by: Stefan Prodan <[email protected]>

Author: stefanprodan

internal/features/features.go

@@ -68,6 +68,11 @@ const (
 	// digest changes. When enabled, the controller will not
 	// append the digest to the chart version in Chart.yaml.
 	DisableChartDigestTracking = "DisableChartDigestTracking"
+
+	// AdditiveCELDependencyCheck controls whether the CEL dependency check
+	// should be additive, meaning that the built-in readiness check will
+	// be added to the user-defined CEL expressions.
+	AdditiveCELDependencyCheck = "AdditiveCELDependencyCheck"
 )
 
 var features = map[string]bool{
@@ -92,6 +97,9 @@ var features = map[string]bool{
 	// DisableChartDigestTracking
 	// opt-in from v1.3.0
 	DisableChartDigestTracking: false,
+	// AdditiveCELDependencyCheck
+	// opt-in from v1.4.0
+	AdditiveCELDependencyCheck: false,
 }
 
 func init() {

main.go

@@ -204,7 +204,13 @@ func main() {
 
 	disableChartDigestTracking, err := features.Enabled(features.DisableChartDigestTracking)
 	if err != nil {
-		setupLog.Error(err, "unable to check feature gate DisableChartDigestTracking")
+		setupLog.Error(err, "unable to check feature gate "+features.DisableChartDigestTracking)
+		os.Exit(1)
+	}
+
+	additiveCELDependencyCheck, err := features.Enabled(features.AdditiveCELDependencyCheck)
+	if err != nil {
+		setupLog.Error(err, "unable to check feature gate "+features.AdditiveCELDependencyCheck)
 		os.Exit(1)
 	}
 
@@ -318,6 +324,7 @@ func main() {
 		KubeConfigOpts:             kubeConfigOpts,
 		FieldManager:               controllerName,
 		DisableChartDigestTracking: disableChartDigestTracking,
+		AdditiveCELDependencyCheck: additiveCELDependencyCheck,
 		TokenCache:                 tokenCache,
 	}).SetupWithManager(ctx, mgr, controller.HelmReleaseReconcilerOptions{
 		DependencyRequeueInterval: requeueDependency,