Move artifact gc to delete event predicate

controllers/gitrepository_controller.go

@@ -38,9 +38,6 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
-	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
-	"sigs.k8s.io/controller-runtime/pkg/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 
 	sourcev1 "github.com/fluxcd/source-controller/api/v1alpha1"
 )
@@ -102,25 +99,7 @@ func (r *GitRepositoryReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	return ctrl.NewControllerManagedBy(mgr).
 		For(&sourcev1.GitRepository{}).
 		WithEventFilter(SourceChangePredicate{}).
-		WithEventFilter(predicate.Funcs{
-			DeleteFunc: func(e event.DeleteEvent) bool {
-				gvk, err := apiutil.GVKForObject(e.Object, r.Scheme)
-				if err != nil {
-					r.Log.Error(err, "unable to get GroupVersionKind for deleted object")
-					return false
-				}
-				// delete artifacts
-				artifact := r.Storage.ArtifactFor(gvk.Kind, e.Meta, "*", "")
-				if err := r.Storage.RemoveAll(artifact); err != nil {
-					r.Log.Error(err, "unable to delete artifacts",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				} else {
-					r.Log.Info("Git repository artifacts deleted",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				}
-				return true
-			},
-		}).
+		WithEventFilter(GarbageCollectPredicate{Scheme: r.Scheme, Log: r.Log, Storage: r.Storage}).
 		Complete(r)
 }
 

controllers/helmchart_controller.go

@@ -33,9 +33,6 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
-	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
-	"sigs.k8s.io/controller-runtime/pkg/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/yaml"
 
 	sourcev1 "github.com/fluxcd/source-controller/api/v1alpha1"
@@ -110,25 +107,7 @@ func (r *HelmChartReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	return ctrl.NewControllerManagedBy(mgr).
 		For(&sourcev1.HelmChart{}).
 		WithEventFilter(SourceChangePredicate{}).
-		WithEventFilter(predicate.Funcs{
-			DeleteFunc: func(e event.DeleteEvent) bool {
-				gvk, err := apiutil.GVKForObject(e.Object, r.Scheme)
-				if err != nil {
-					r.Log.Error(err, "unable to get GroupVersionKind for deleted object")
-					return false
-				}
-				// delete artifacts
-				artifact := r.Storage.ArtifactFor(gvk.Kind, e.Meta, "*", "")
-				if err := r.Storage.RemoveAll(artifact); err != nil {
-					r.Log.Error(err, "unable to delete artifacts",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				} else {
-					r.Log.Info("Helm chart artifacts deleted",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				}
-				return true
-			},
-		}).
+		WithEventFilter(GarbageCollectPredicate{Scheme: r.Scheme, Log: r.Log, Storage: r.Storage}).
 		Complete(r)
 }
 

controllers/helmrepository_controller.go

@@ -32,9 +32,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
-	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
-	"sigs.k8s.io/controller-runtime/pkg/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/yaml"
 
 	sourcev1 "github.com/fluxcd/source-controller/api/v1alpha1"
@@ -98,25 +95,7 @@ func (r *HelmRepositoryReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	return ctrl.NewControllerManagedBy(mgr).
 		For(&sourcev1.HelmRepository{}).
 		WithEventFilter(SourceChangePredicate{}).
-		WithEventFilter(predicate.Funcs{
-			DeleteFunc: func(e event.DeleteEvent) bool {
-				gvk, err := apiutil.GVKForObject(e.Object, r.Scheme)
-				if err != nil {
-					r.Log.Error(err, "unable to get GroupVersionKind for deleted object")
-					return false
-				}
-				// delete artifacts
-				artifact := r.Storage.ArtifactFor(gvk.Kind, e.Meta, "*", "")
-				if err := r.Storage.RemoveAll(artifact); err != nil {
-					r.Log.Error(err, "unable to delete artifacts",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				} else {
-					r.Log.Info("Helm repository artifacts deleted",
-						gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
-				}
-				return true
-			},
-		}).
+		WithEventFilter(GarbageCollectPredicate{Scheme: r.Scheme, Log: r.Log, Storage: r.Storage}).
 		Complete(r)
 }
 

controllers/predicate.go

@@ -17,6 +17,11 @@ limitations under the License.
 package controllers
 
 import (
+	"fmt"
+
+	"github.com/go-logr/logr"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
 	"sigs.k8s.io/controller-runtime/pkg/event"
 	"sigs.k8s.io/controller-runtime/pkg/predicate"
 )
@@ -25,7 +30,8 @@ type SourceChangePredicate struct {
 	predicate.Funcs
 }
 
-// Update implements default UpdateEvent filter for validating repository change
+// Update implements the default UpdateEvent filter for validating
+// source changes.
 func (SourceChangePredicate) Update(e event.UpdateEvent) bool {
 	if e.MetaOld == nil || e.MetaNew == nil {
 		// ignore objects without metadata
@@ -53,3 +59,30 @@ func (SourceChangePredicate) Update(e event.UpdateEvent) bool {
 const (
 	ForceSyncAnnotation string = "source.fluxcd.io/syncAt"
 )
+
+type GarbageCollectPredicate struct {
+	predicate.Funcs
+	Scheme  *runtime.Scheme
+	Log     logr.Logger
+	Storage *Storage
+}
+
+// Delete removes all artifacts from storage that belong to the
+// referenced object.
+func (gc GarbageCollectPredicate) Delete(e event.DeleteEvent) bool {
+	gvk, err := apiutil.GVKForObject(e.Object, gc.Scheme)
+	if err != nil {
+		gc.Log.Error(err, "unable to get GroupVersionKind for deleted object")
+		return false
+	}
+	// delete artifacts
+	artifact := gc.Storage.ArtifactFor(gvk.Kind, e.Meta, "*", "")
+	if err := gc.Storage.RemoveAll(artifact); err != nil {
+		gc.Log.Error(err, "unable to delete artifacts",
+			gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
+	} else {
+		gc.Log.Info(gvk.Kind+" artifacts deleted",
+			gvk.Kind, fmt.Sprintf("%s/%s", e.Meta.GetNamespace(), e.Meta.GetName()))
+	}
+	return true
+}