Update networks and patch Ips

internal/controller/externaldnswatcher_controller.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	dnsv1alpha1 "git.mayers.cloud/superflo22/split-horizon-operator/api/v1alpha1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"reflect"
 	"sigs.k8s.io/controller-runtime/pkg/handler"
 	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
 	"strings"
@@ -61,16 +62,15 @@ func (r *ExternalDNSWatcherReconciler) Reconcile(ctx context.Context, req ctrl.R
 
 	// Step 2: Check annotation
 	annotations := gateway.GetAnnotations()
-	if annotations["dns.mayers.cloud/enabled"] != "true" {
-		log.Info("ExternalDNS watcher is not enabled")
+	authority := annotations["dns.mayers.cloud/authority"]
+	if authority == "" {
+		log.Info("Missing required authority annotation")
 		return ctrl.Result{}, nil
 	}
-
 	network := annotations["dns.mayers.cloud/network"]
-	authority := annotations["dns.mayers.cloud/authority"]
-	if network == "" || authority == "" {
-		log.Info("Missing required annotations")
-		return ctrl.Result{}, nil
+	if network == "" {
+		log.Info("Missing network annotation assuming default network")
+		network = "default"
 	}
 
 	// Step 3: Get Gateway IP (if available)
@@ -88,42 +88,75 @@ func (r *ExternalDNSWatcherReconciler) Reconcile(ctx context.Context, req ctrl.R
 	}
 
 	for _, route := range routes.Items {
-		for _, parent := range route.Spec.ParentRefs {
+		// Step 5: Collect hostnames
+		for _, hostname := range route.Spec.Hostnames {
 
-			// Check if the parent is a Gateway and matches the current gateway
-			if string(*parent.Kind) == "Gateway" && string(parent.Name) == gateway.Name {
-				// Step 5: Collect hostnames
-				for _, hostname := range route.Spec.Hostnames {
-					record := &dnsv1alpha1.TechnitiumRecord{
-						TypeMeta: metav1.TypeMeta{
-							Kind:       "TechnitiumRecord",
-							APIVersion: "dns.mayers.cloud/v1alpha1",
-						},
-						ObjectMeta: metav1.ObjectMeta{
-							Name:      fmt.Sprintf("%s", strings.ReplaceAll(string(hostname), ".", "-")),
-							Namespace: route.Namespace,
-						},
-						Spec: dnsv1alpha1.TechnitiumRecordSpec{
-							AuthorityRef: dnsv1alpha1.AuthorityReference{
-								Name: authority,
-							},
-							Name:      string(hostname),
-							TTL:       300,
-							ClassPath: "SimpleAddress",
-							RecordData: map[string][]string{
-								network: gatewayIPs,
-							},
-						},
-					}
-					// Log the record yaml
-					log.Info("TechnitiumRecord", "record", record)
+			// Naming convention for TechnitiumRecord
+			recordName := fmt.Sprintf("%s", strings.ReplaceAll(string(hostname), ".", "-"))
 
-					if err := r.Client.Patch(ctx, record, client.Apply, client.ForceOwnership, client.FieldOwner("external-dns-watcher")); err != nil {
-						log.Error(err, "Failed to apply TechnitiumRecord")
+			// Bestehendes TechnitiumRecord abrufen
+			var existingRecord dnsv1alpha1.TechnitiumRecord
+			err := r.Client.Get(ctx, client.ObjectKey{
+				Namespace: route.Namespace,
+				Name:      recordName,
+			}, &existingRecord)
+			if err != nil {
+				log.Info("Creating new Record", "recordName", recordName)
+
+				record := &dnsv1alpha1.TechnitiumRecord{
+					TypeMeta: metav1.TypeMeta{
+						Kind:       "TechnitiumRecord",
+						APIVersion: "dns.mayers.cloud/v1alpha1",
+					},
+					ObjectMeta: metav1.ObjectMeta{
+						Name:      recordName,
+						Namespace: route.Namespace,
+					},
+					Spec: dnsv1alpha1.TechnitiumRecordSpec{
+						AuthorityRef: dnsv1alpha1.AuthorityReference{
+							Name: authority,
+						},
+						Name:      string(hostname),
+						TTL:       300,
+						ClassPath: "SimpleAddress",
+						RecordData: map[string][]string{
+							network: gatewayIPs,
+						},
+					},
+				}
+				// Log the record yaml
+				log.V(1).Info("TechnitiumRecord Manifest", "record", record)
+
+				if err := r.Client.Patch(ctx, record, client.Apply, client.ForceOwnership, client.FieldOwner("external-dns-watcher")); err != nil {
+					log.Error(err, "Failed to apply TechnitiumRecord")
+				} else {
+					log.Info("Created new Record", "name", record.Name)
+				}
+			}
+
+			// Step 6: Update existing TechnitiumRecord
+			if existingRecord.Spec.RecordData[network] != nil {
+				// Check if the IPs are different
+				if !reflect.DeepEqual(existingRecord.Spec.RecordData[network], gatewayIPs) {
+					log.Info("Updating existing Record", "recordName", recordName)
+
+					existingRecord.Spec.RecordData[network] = gatewayIPs
+					if err := r.Update(ctx, &existingRecord); err != nil {
+						log.Error(err, "Failed to update TechnitiumRecord")
 					} else {
-						log.Info("Reconciled TechnitiumRecord", "name", record.Name)
+						log.Info("Updated IPs in existing Record", "name", recordName)
 					}
 				}
+			} else {
+				log.Info("Adding new network to existing Record", "recordName", recordName)
+
+				// Add the new network and IPs
+				existingRecord.Spec.RecordData[network] = gatewayIPs
+				if err := r.Update(ctx, &existingRecord); err != nil {
+					log.Error(err, "Failed to update TechnitiumRecord")
+				} else {
+					log.Info("Updated new network in existing Record", "name", recordName)
+				}
 			}
 		}
 	}