chore: add GroupChangeLog feature gate to fix es indexing cardinality

Signed-off-by: Daniel Brown <daniel.brown2@sainsburys.co.uk>

go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/fluxcd/pkg/http/fetch v0.15.0
 	github.com/fluxcd/pkg/kustomize v1.16.0
 	github.com/fluxcd/pkg/runtime v0.53.1
-	github.com/fluxcd/pkg/ssa v0.44.0
+	github.com/fluxcd/pkg/ssa v0.45.1
 	github.com/fluxcd/pkg/tar v0.11.0
 	github.com/fluxcd/pkg/testserver v0.10.0
 	github.com/fluxcd/source-controller/api v1.4.1

go.sum

@@ -191,8 +191,8 @@ github.com/fluxcd/pkg/runtime v0.53.1 h1:S+QRSoiU+LH1sTvJLNvT1x3E5hBq/sjOsRHazA7
 github.com/fluxcd/pkg/runtime v0.53.1/go.mod h1:8vkIhS1AhkmjC98LRm5xM+CRG5KySFTXpJWk+ZdtT4I=
 github.com/fluxcd/pkg/sourceignore v0.11.0 h1:xzpYmc5/t/Ck+/DkJSX3r+VbahDRIAn5kbv04fynWUo=
 github.com/fluxcd/pkg/sourceignore v0.11.0/go.mod h1:ri2FvlzX8ep2iszOK5gF/riYq2TNgpVvsfJ2QY0dLWI=
-github.com/fluxcd/pkg/ssa v0.44.0 h1:FnINKo29HheKMkCTqfsY5y994ObLk09N1Ldb6MtBJ3c=
+github.com/fluxcd/pkg/ssa v0.45.1 h1:ISl84TJwRP/GuZXrKiR9Tf8JOnG5XFgtjcYoR4XQYf4=
-github.com/fluxcd/pkg/ssa v0.44.0/go.mod h1:8Anf7XVZ0zxOve7HXbDaW1s0gfmP95ksJBlKfDYinhQ=
+github.com/fluxcd/pkg/ssa v0.45.1/go.mod h1:8Anf7XVZ0zxOve7HXbDaW1s0gfmP95ksJBlKfDYinhQ=
 github.com/fluxcd/pkg/tar v0.11.0 h1:pjf/rzr6HNAPiuxT59mtba9tfBtdNiSQ/UqduG8vZ2I=
 github.com/fluxcd/pkg/tar v0.11.0/go.mod h1:+kiP25NqibWMpFWgizyPEMqnMJIux7bCgEy+4pfxyI4=
 github.com/fluxcd/pkg/testserver v0.10.0 h1:g5l6mX9GndovWXCTW9xCPbL6YQYgphwe4Ee6cuBmLcA=

internal/controller/kustomization_controller.go

@@ -104,6 +104,7 @@ type KustomizationReconciler struct {
 	ConcurrentSSA           int
 	DisallowedFieldManagers []string
 	StrictSubstitutions     bool
+	GroupChangeLog          bool
 }
 
 // KustomizationReconcilerOptions contains options for the KustomizationReconciler.
@@ -799,7 +800,11 @@ func (r *KustomizationReconciler) apply(ctx context.Context,
 		if changeSet != nil && len(changeSet.Entries) > 0 {
 			resultSet.Append(changeSet.Entries)
 
-			log.Info("server-side apply for cluster definitions completed", "output", changeSet.ToMap())
+			if r.GroupChangeLog {
+				log.Info("server-side apply for cluster definitions completed", "output", changeSet.ToGroupedMap())
+			} else {
+				log.Info("server-side apply for cluster definitions completed", "output", changeSet.ToMap())
+			}
 			for _, change := range changeSet.Entries {
 				if HasChanged(change.Action) {
 					changeSetLog.WriteString(change.String() + "\n")
@@ -825,7 +830,11 @@ func (r *KustomizationReconciler) apply(ctx context.Context,
 		if changeSet != nil && len(changeSet.Entries) > 0 {
 			resultSet.Append(changeSet.Entries)
 
-			log.Info("server-side apply for cluster class types completed", "output", changeSet.ToMap())
+			if r.GroupChangeLog {
+				log.Info("server-side apply for cluster definitions completed", "output", changeSet.ToGroupedMap())
+			} else {
+				log.Info("server-side apply for cluster class types completed", "output", changeSet.ToMap())
+			}
 			for _, change := range changeSet.Entries {
 				if HasChanged(change.Action) {
 					changeSetLog.WriteString(change.String() + "\n")
@@ -852,7 +861,11 @@ func (r *KustomizationReconciler) apply(ctx context.Context,
 		if changeSet != nil && len(changeSet.Entries) > 0 {
 			resultSet.Append(changeSet.Entries)
 
-			log.Info("server-side apply completed", "output", changeSet.ToMap(), "revision", revision)
+			if r.GroupChangeLog {
+				log.Info("server-side apply for cluster definitions completed", "output", changeSet.ToGroupedMap())
+			} else {
+				log.Info("server-side apply completed", "output", changeSet.ToMap(), "revision", revision)
+			}
 			for _, change := range changeSet.Entries {
 				if HasChanged(change.Action) {
 					changeSetLog.WriteString(change.String() + "\n")

internal/features/features.go

@@ -44,6 +44,10 @@ const (
 	// should fail if a variable without a default value is declared in files
 	// but is missing from the input vars.
 	StrictPostBuildSubstitutions = "StrictPostBuildSubstitutions"
+
+	// GroupChangelog controls groups kubernetes objects names on log output
+	// reduces cardinality of logs when logging to elasticsearch
+	GroupChangeLog = "GroupChangeLog"
 )
 
 var features = map[string]bool{
@@ -59,6 +63,9 @@ var features = map[string]bool{
 	// StrictPostBuildSubstitutions
 	// opt-in from v1.3
 	StrictPostBuildSubstitutions: false,
+	// GroupChangeLog
+	// opt-in from v1.5
+	GroupChangeLog: false,
 }
 
 // FeatureGates contains a list of all supported feature gates and

main.go

@@ -234,6 +234,12 @@ func main() {
 		os.Exit(1)
 	}
 
+	groupChangeLog, err := features.Enabled(features.GroupChangeLog)
+	if err != nil {
+		setupLog.Error(err, "unable to check feature gate "+features.GroupChangeLog)
+		os.Exit(1)
+	}
+
 	if err = (&controller.KustomizationReconciler{
 		ControllerName:          controllerName,
 		DefaultServiceAccount:   defaultServiceAccount,
@@ -251,6 +257,7 @@ func main() {
 		StatusPoller:            polling.NewStatusPoller(mgr.GetClient(), mgr.GetRESTMapper(), pollingOpts),
 		DisallowedFieldManagers: disallowedFieldManagers,
 		StrictSubstitutions:     strictSubstitutions,
+		GroupChangeLog:          groupChangeLog,
 	}).SetupWithManager(ctx, mgr, controller.KustomizationReconcilerOptions{
 		DependencyRequeueInterval: requeueDependency,
 		HTTPRetry:                 httpRetry,