feat(operator): consider corner cases in KACR controller

operator/apis/lifecycle/v1alpha3/keptnworkload_types.go

@@ -17,6 +17,7 @@ limitations under the License.
 package v1alpha3
 
 import (
+	"fmt"
 	"strings"
 
 	"github.com/keptn/lifecycle-toolkit/operator/apis/lifecycle/v1alpha3/common"
@@ -117,3 +118,7 @@ func (w KeptnWorkload) GetEventAnnotations() map[string]string {
 		"workloadVersion": w.Spec.Version,
 	}
 }
+
+func (w KeptnWorkload) GetNameWithoutAppPrefix() string {
+	return strings.TrimPrefix(w.Name, fmt.Sprintf("%s-", w.Spec.AppName))
+}

operator/apis/lifecycle/v1alpha3/keptnworkload_types_test.go

@@ -0,0 +1,44 @@
+package v1alpha3
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+func TestKeptnWorkload_GetNameWithoutAppPrefix(t *testing.T) {
+	type fields struct {
+		ObjectMeta v1.ObjectMeta
+		Spec       KeptnWorkloadSpec
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		want   string
+	}{
+		{
+			name: "remove app prefix",
+			fields: fields{
+				ObjectMeta: v1.ObjectMeta{
+					Name: "my-app-my-workload",
+				},
+				Spec: KeptnWorkloadSpec{
+					AppName: "my-app",
+				},
+			},
+			want: "my-workload",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			w := KeptnWorkload{
+				ObjectMeta: tt.fields.ObjectMeta,
+				Spec:       tt.fields.Spec,
+			}
+			got := w.GetNameWithoutAppPrefix()
+
+			require.Equal(t, tt.want, got)
+		})
+	}
+}

operator/controllers/lifecycle/keptnappcreationrequest/controller.go

@@ -164,11 +164,23 @@ func (r *KeptnAppCreationRequestReconciler) SetupWithManager(mgr ctrl.Manager) e
 
 func (r *KeptnAppCreationRequestReconciler) updateKeptnApp(ctx context.Context, keptnApp *lifecycle.KeptnApp, workloads *lifecycle.KeptnWorkloadList) error {
 
-	updated := false
+	addOrUpdatedWorkload := r.addOrUpdateWorkloads(workloads, keptnApp)
+	removedWorkload := r.cleanupWorkloads(workloads, keptnApp)
+
+	if !addOrUpdatedWorkload && !removedWorkload {
+		return nil
+	}
 
+	keptnApp.Spec.Version = computeVersionFromWorkloads(workloads.Items)
+
+	return r.Update(ctx, keptnApp)
+}
+
+func (r *KeptnAppCreationRequestReconciler) addOrUpdateWorkloads(workloads *lifecycle.KeptnWorkloadList, keptnApp *lifecycle.KeptnApp) bool {
+	updated := false
 	for _, workload := range workloads.Items {
 		foundWorkload := false
-		workloadName := strings.TrimPrefix(workload.Name, fmt.Sprintf("%s-", keptnApp.Name))
+		workloadName := workload.GetNameWithoutAppPrefix()
 		for index, appWorkload := range keptnApp.Spec.Workloads {
 			if appWorkload.Name == workloadName {
 				// make sure the version matches the current version of the workload
@@ -190,14 +202,27 @@ func (r *KeptnAppCreationRequestReconciler) updateKeptnApp(ctx context.Context,
 			updated = true
 		}
 	}
+	return updated
+}
 
-	if !updated {
-		return nil
-	}
-
-	keptnApp.Spec.Version = computeVersionFromWorkloads(workloads.Items)
+func (r *KeptnAppCreationRequestReconciler) cleanupWorkloads(workloads *lifecycle.KeptnWorkloadList, keptnApp *lifecycle.KeptnApp) bool {
+	updated := false
+	updatedWorkloads := []lifecycle.KeptnWorkloadRef{}
+	for index, appWorkload := range keptnApp.Spec.Workloads {
+		foundWorkload := false
+		for _, workload := range workloads.Items {
+			if appWorkload.Name == workload.GetNameWithoutAppPrefix() {
+				updatedWorkloads = append(updatedWorkloads, keptnApp.Spec.Workloads[index])
+				break
+			}
+		}
 
-	return r.Update(ctx, keptnApp)
+		if !foundWorkload {
+			updated = true
+		}
+	}
+	keptnApp.Spec.Workloads = updatedWorkloads
+	return updated
 }
 
 func (r *KeptnAppCreationRequestReconciler) createKeptnApp(ctx context.Context, creationRequest *lifecycle.KeptnAppCreationRequest, workloads *lifecycle.KeptnWorkloadList) error {