update to v0.20 and prepare for 0.21

Signed-off-by: Jan Jansen <jan.jansen@gdata.de>

Author: farodin91

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24-bookworm AS builder
+FROM golang:1.25-bookworm AS builder
 
 COPY . /code/external-dns-coredns-webhook
 WORKDIR /code/external-dns-coredns-webhook

README.md

@@ -1,5 +1,9 @@
 # ExternalDNS Plugin CoreDNS Webhook
 
+## Deprecated
+
+With the release of version 0.21 or newer, every function is now included inside the in-tree provider.
+
 ## Commandline
 
 ```

coredns.go

@@ -94,6 +94,9 @@ type Service struct {
 
 	// ManagedBy is used to prevent service to be added by different external-dns (only used by external-dns)
 	ManagedBy string `json:"managedby,omitempty"`
+
+	// OwnedBy is used to prevent service to be added by different external-dns (only used by external-dns)
+	OwnedBy string `json:"ownedby,omitempty"`
 }
 
 type etcdClient struct {
@@ -130,6 +133,7 @@ func (c etcdClient) GetServices(ctx context.Context, prefix string) ([]*Service,
 			Text:      svc.Text,
 			Key:       string(n.Key),
 			ManagedBy: svc.ManagedBy,
+			OwnedBy:   svc.OwnedBy,
 		}
 		if _, ok := bx[b]; ok {
 			// skip the service if already added to service list.
@@ -162,6 +166,7 @@ func (c etcdClient) SaveService(ctx context.Context, service *Service) error {
 
 	if c.managedBy != "" {
 		service.ManagedBy = c.managedBy
+		service.OwnedBy = c.managedBy
 	}
 	if ownedBy, err := c.IsOwnedBy(ctx, service.Key); err != nil {
 		return err

coredns_test.go

@@ -944,6 +944,7 @@ func TestSaveService(t *testing.T) {
 				Text:      "hello",
 				Key:       "/prefix/1",
 				ManagedBy: "managed-by",
+				OwnedBy:   "managed-by",
 			},
 		},
 		{
@@ -966,6 +967,7 @@ func TestSaveService(t *testing.T) {
 				Text:      "hello",
 				Key:       "/prefix/1",
 				ManagedBy: "managed-by",
+				OwnedBy:   "managed-by",
 			},
 		},
 		{
@@ -989,6 +991,7 @@ func TestSaveService(t *testing.T) {
 				Text:      "hello",
 				Key:       "/prefix/1",
 				ManagedBy: "managed-by",
+				OwnedBy:   "managed-by",
 			},
 		},
 		{

go.mod

@@ -1,86 +1,86 @@
 module github.com/GDATASoftwareAG/external-dns-coredns-webhook
 
-go 1.24.2
-
-toolchain go1.24.5
+go 1.25
 
 require (
 	github.com/alecthomas/kingpin v2.2.6+incompatible
 	github.com/sirupsen/logrus v1.9.3
 	github.com/stretchr/testify v1.11.1
-	go.etcd.io/etcd/api/v3 v3.6.5
-	go.etcd.io/etcd/client/v3 v3.6.5
-	sigs.k8s.io/external-dns v0.19.0
+	go.etcd.io/etcd/api/v3 v3.6.6
+	go.etcd.io/etcd/client/v3 v3.6.6
+	sigs.k8s.io/external-dns v0.20.0
 )
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0 // indirect
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
-	github.com/alecthomas/units v0.0.0-20240626203959-61d1e3462e30 // indirect
-	github.com/aws/aws-sdk-go-v2/service/route53 v1.56.2 // indirect
-	github.com/aws/smithy-go v1.22.5 // indirect
+	github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b // indirect
+	github.com/aws/aws-sdk-go-v2/service/route53 v1.59.5 // indirect
+	github.com/aws/smithy-go v1.23.2 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/coreos/go-semver v0.3.1 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/emicklei/go-restful/v3 v3.12.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
 	github.com/evanphx/json-patch/v5 v5.9.11 // indirect
-	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
-	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonpointer v0.21.2 // indirect
 	github.com/go-openapi/jsonreference v0.21.0 // indirect
-	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/go-openapi/swag v0.23.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
-	github.com/google/gnostic-models v0.6.9 // indirect
+	github.com/google/gnostic-models v0.7.0 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/onsi/ginkgo/v2 v2.23.4 // indirect
-	github.com/onsi/gomega v1.37.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/onsi/ginkgo/v2 v2.25.3 // indirect
+	github.com/onsi/gomega v1.38.2 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/client_golang v1.23.0 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.65.0 // indirect
-	github.com/prometheus/procfs v0.16.1 // indirect
-	github.com/spf13/pflag v1.0.7 // indirect
+	github.com/prometheus/common v0.67.2 // indirect
+	github.com/prometheus/procfs v0.17.0 // indirect
+	github.com/spf13/cobra v1.10.1 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
-	go.etcd.io/etcd/client/pkg/v3 v3.6.5 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.6.6 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
-	golang.org/x/net v0.43.0 // indirect
-	golang.org/x/oauth2 v0.30.0 // indirect
-	golang.org/x/sys v0.35.0 // indirect
-	golang.org/x/term v0.34.0 // indirect
-	golang.org/x/text v0.28.0 // indirect
-	golang.org/x/time v0.12.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250603155806-513f23925822 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250818200422-3122310a409c // indirect
-	google.golang.org/grpc v1.74.2 // indirect
-	google.golang.org/protobuf v1.36.7 // indirect
-	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/net v0.47.0 // indirect
+	golang.org/x/oauth2 v0.33.0 // indirect
+	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/term v0.37.0 // indirect
+	golang.org/x/text v0.31.0 // indirect
+	golang.org/x/time v0.14.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250811230008-5f3141c8851a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20251103181224-f26f9409b101 // indirect
+	google.golang.org/grpc v1.76.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/api v0.33.4 // indirect
-	k8s.io/apiextensions-apiserver v0.33.3 // indirect
-	k8s.io/apimachinery v0.33.4 // indirect
-	k8s.io/client-go v0.33.4 // indirect
+	k8s.io/api v0.34.2 // indirect
+	k8s.io/apimachinery v0.34.2 // indirect
+	k8s.io/client-go v0.34.2 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff // indirect
-	k8s.io/utils v0.0.0-20241210054802-24370beab758 // indirect
-	sigs.k8s.io/controller-runtime v0.21.0 // indirect
-	sigs.k8s.io/json v0.0.0-20241014173422-cfa47c3a1cc8 // indirect
+	k8s.io/kube-openapi v0.0.0-20250814151709-d7b6acb124c3 // indirect
+	k8s.io/utils v0.0.0-20250820121507-0af2bda4dd1d // indirect
+	sigs.k8s.io/controller-runtime v0.22.4 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
 	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.7.0 // indirect
-	sigs.k8s.io/yaml v1.4.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.0 // indirect
+	sigs.k8s.io/yaml v1.6.0 // indirect
 )