Remove direct dep on kubernetes

pkg/validation-webhook/convert_test.go

@@ -30,11 +30,10 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/util/diff"
-	admissionfuzzer "k8s.io/kubernetes/pkg/apis/admission/fuzzer"
 )
 
 func TestConvertAdmissionRequestToV1(t *testing.T) {
-	f := fuzzer.FuzzerFor(admissionfuzzer.Funcs, rand.NewSource(rand.Int63()), serializer.NewCodecFactory(runtime.NewScheme()))
+	f := fuzzer.FuzzerFor(AdmissionfuzzerFuncs, rand.NewSource(rand.Int63()), serializer.NewCodecFactory(runtime.NewScheme()))
 	for i := 0; i < 100; i++ {
 		t.Run(fmt.Sprintf("Run %d/100", i), func(t *testing.T) {
 			orig := &v1beta1.AdmissionRequest{}

pkg/validation-webhook/fuzzer.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// NOTE: This file is copied from
+// https://github.com/kubernetes/kubernetes/blob/v1.29.0-alpha.0/pkg/apis/admission/fuzzer/fuzzer.go
+// so that external-snapshotter no longer needs to depend on k8s.io/kubernetes
+
+package webhook
+
+import (
+	fuzz "github.com/google/gofuzz"
+
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
+)
+
+// Funcs returns the fuzzer functions for the admission api group.
+var AdmissionfuzzerFuncs = func(codecs runtimeserializer.CodecFactory) []interface{} {
+	return []interface{}{
+		func(s *runtime.RawExtension, c fuzz.Continue) {
+			u := &unstructured.Unstructured{Object: map[string]interface{}{
+				"apiVersion": "unknown.group/unknown",
+				"kind":       "Something",
+				"somekey":    "somevalue",
+			}}
+			s.Object = u
+		},
+	}
+}