name runtime.Schemes so we can see which one fails

staging/src/BUILD

@@ -47,6 +47,7 @@ filegroup(
         "//staging/src/k8s.io/apimachinery/pkg/util/json:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/jsonmergepatch:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/mergepatch:all-srcs",
+        "//staging/src/k8s.io/apimachinery/pkg/util/naming:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/net:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/proxy:all-srcs",
         "//staging/src/k8s.io/apimachinery/pkg/util/rand:all-srcs",

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/customresource_handler.go

@@ -606,7 +606,7 @@ func (s unstructuredNegotiatedSerializer) SupportedMediaTypes() []runtime.Serial
 }
 
 func (s unstructuredNegotiatedSerializer) EncoderForVersion(encoder runtime.Encoder, gv runtime.GroupVersioner) runtime.Encoder {
-	return versioning.NewCodec(encoder, nil, s.converter, Scheme, Scheme, Scheme, gv, nil)
+	return versioning.NewCodec(encoder, nil, s.converter, Scheme, Scheme, Scheme, gv, nil, "crdNegotiatedSerializer")
 }
 
 func (s unstructuredNegotiatedSerializer) DecoderToVersion(decoder runtime.Decoder, gv runtime.GroupVersioner) runtime.Decoder {
@@ -710,7 +710,17 @@ func (t crdConversionRESTOptionsGetter) GetRESTOptions(resource schema.GroupReso
 			dropInvalidMetadata: true,
 		}}
 		c := schemaCoercingConverter{delegate: t.converter, validator: unstructuredSchemaCoercer{}}
-		ret.StorageConfig.Codec = versioning.NewCodec(ret.StorageConfig.Codec, d, c, &unstructuredCreator{}, crdserverscheme.NewUnstructuredObjectTyper(), &unstructuredDefaulter{delegate: Scheme}, t.encoderVersion, t.decoderVersion)
+		ret.StorageConfig.Codec = versioning.NewCodec(
+			ret.StorageConfig.Codec,
+			d,
+			c,
+			&unstructuredCreator{},
+			crdserverscheme.NewUnstructuredObjectTyper(),
+			&unstructuredDefaulter{delegate: Scheme},
+			t.encoderVersion,
+			t.decoderVersion,
+			"crdRESTOptions",
+		)
 	}
 	return ret, err
 }

staging/src/k8s.io/apimachinery/pkg/runtime/BUILD

@@ -63,6 +63,7 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/json:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/util/naming:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//vendor/github.com/gogo/protobuf/proto:go_default_library",

staging/src/k8s.io/apimachinery/pkg/runtime/error.go

@@ -24,46 +24,47 @@ import (
 )
 
 type notRegisteredErr struct {
-	gvk    schema.GroupVersionKind
-	target GroupVersioner
-	t      reflect.Type
+	schemeName string
+	gvk        schema.GroupVersionKind
+	target     GroupVersioner
+	t          reflect.Type
 }
 
-func NewNotRegisteredErrForKind(gvk schema.GroupVersionKind) error {
-	return &notRegisteredErr{gvk: gvk}
+func NewNotRegisteredErrForKind(schemeName string, gvk schema.GroupVersionKind) error {
+	return &notRegisteredErr{schemeName: schemeName, gvk: gvk}
 }
 
-func NewNotRegisteredErrForType(t reflect.Type) error {
-	return &notRegisteredErr{t: t}
+func NewNotRegisteredErrForType(schemeName string, t reflect.Type) error {
+	return &notRegisteredErr{schemeName: schemeName, t: t}
 }
 
-func NewNotRegisteredErrForTarget(t reflect.Type, target GroupVersioner) error {
-	return &notRegisteredErr{t: t, target: target}
+func NewNotRegisteredErrForTarget(schemeName string, t reflect.Type, target GroupVersioner) error {
+	return &notRegisteredErr{schemeName: schemeName, t: t, target: target}
 }
 
-func NewNotRegisteredGVKErrForTarget(gvk schema.GroupVersionKind, target GroupVersioner) error {
-	return &notRegisteredErr{gvk: gvk, target: target}
+func NewNotRegisteredGVKErrForTarget(schemeName string, gvk schema.GroupVersionKind, target GroupVersioner) error {
+	return &notRegisteredErr{schemeName: schemeName, gvk: gvk, target: target}
 }
 
 func (k *notRegisteredErr) Error() string {
 	if k.t != nil && k.target != nil {
-		return fmt.Sprintf("%v is not suitable for converting to %q", k.t, k.target)
+		return fmt.Sprintf("%v is not suitable for converting to %q in scheme %q", k.t, k.target, k.schemeName)
 	}
 	nullGVK := schema.GroupVersionKind{}
 	if k.gvk != nullGVK && k.target != nil {
-		return fmt.Sprintf("%q is not suitable for converting to %q", k.gvk.GroupVersion(), k.target)
+		return fmt.Sprintf("%q is not suitable for converting to %q in scheme %q", k.gvk.GroupVersion(), k.target, k.schemeName)
 	}
 	if k.t != nil {
-		return fmt.Sprintf("no kind is registered for the type %v", k.t)
+		return fmt.Sprintf("no kind is registered for the type %v in scheme %q", k.t, k.schemeName)
 	}
 	if len(k.gvk.Kind) == 0 {
-		return fmt.Sprintf("no version %q has been registered", k.gvk.GroupVersion())
+		return fmt.Sprintf("no version %q has been registered in scheme %q", k.gvk.GroupVersion(), k.schemeName)
 	}
 	if k.gvk.Version == APIVersionInternal {
-		return fmt.Sprintf("no kind %q is registered for the internal version of group %q", k.gvk.Kind, k.gvk.Group)
+		return fmt.Sprintf("no kind %q is registered for the internal version of group %q in scheme %q", k.gvk.Kind, k.gvk.Group, k.schemeName)
 	}
 
-	return fmt.Sprintf("no kind %q is registered for version %q", k.gvk.Kind, k.gvk.GroupVersion())
+	return fmt.Sprintf("no kind %q is registered for version %q in scheme %q", k.gvk.Kind, k.gvk.GroupVersion(), k.schemeName)
 }
 
 // IsNotRegisteredError returns true if the error indicates the provided

staging/src/k8s.io/apimachinery/pkg/runtime/scheme.go

@@ -20,11 +20,11 @@ import (
 	"fmt"
 	"net/url"
 	"reflect"
-
 	"strings"
 
 	"k8s.io/apimachinery/pkg/conversion"
 	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/naming"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/sets"
 )
@@ -79,6 +79,10 @@ type Scheme struct {
 
 	// observedVersions keeps track of the order we've seen versions during type registration
 	observedVersions []schema.GroupVersion
+
+	// schemeName is the name of this scheme.  If you don't specify a name, the stack of the NewScheme caller will be used.
+	// This is useful for error reporting to indicate the origin of the scheme.
+	schemeName string
 }
 
 // FieldLabelConversionFunc converts a field selector to internal representation.
@@ -94,6 +98,7 @@ func NewScheme() *Scheme {
 		fieldLabelConversionFuncs: map[string]map[string]FieldLabelConversionFunc{},
 		defaulterFuncs:            map[reflect.Type]func(interface{}){},
 		versionPriority:           map[string][]string{},
+		schemeName:                naming.GetNameFromCallsite(internalPackages...),
 	}
 	s.converter = conversion.NewConverter(s.nameFunc)
 
@@ -250,7 +255,7 @@ func (s *Scheme) ObjectKinds(obj Object) ([]schema.GroupVersionKind, bool, error
 
 	gvks, ok := s.typeToGVK[t]
 	if !ok {
-		return nil, false, NewNotRegisteredErrForType(t)
+		return nil, false, NewNotRegisteredErrForType(s.schemeName, t)
 	}
 	_, unversionedType := s.unversionedTypes[t]
 
@@ -288,7 +293,7 @@ func (s *Scheme) New(kind schema.GroupVersionKind) (Object, error) {
 	if t, exists := s.unversionedKinds[kind.Kind]; exists {
 		return reflect.New(t).Interface().(Object), nil
 	}
-	return nil, NewNotRegisteredErrForKind(kind)
+	return nil, NewNotRegisteredErrForKind(s.schemeName, kind)
 }
 
 // AddGenericConversionFunc adds a function that accepts the ConversionFunc call pattern
@@ -536,7 +541,7 @@ func (s *Scheme) convertToVersion(copy bool, in Object, target GroupVersioner) (
 
 	kinds, ok := s.typeToGVK[t]
 	if !ok || len(kinds) == 0 {
-		return nil, NewNotRegisteredErrForType(t)
+		return nil, NewNotRegisteredErrForType(s.schemeName, t)
 	}
 
 	gvk, ok := target.KindForGroupVersionKinds(kinds)
@@ -549,7 +554,7 @@ func (s *Scheme) convertToVersion(copy bool, in Object, target GroupVersioner) (
 			}
 			return copyAndSetTargetKind(copy, in, unversionedKind)
 		}
-		return nil, NewNotRegisteredErrForTarget(t, target)
+		return nil, NewNotRegisteredErrForTarget(s.schemeName, t, target)
 	}
 
 	// target wants to use the existing type, set kind and return (no conversion necessary)
@@ -759,3 +764,11 @@ func (s *Scheme) addObservedVersion(version schema.GroupVersion) {
 
 	s.observedVersions = append(s.observedVersions, version)
 }
+
+func (s *Scheme) Name() string {
+	return s.schemeName
+}
+
+// internalPackages are packages that ignored when creating a default reflector name. These packages are in the common
+// call chains to NewReflector, so they'd be low entropy names for reflectors
+var internalPackages = []string{"k8s.io/apimachinery/pkg/runtime/scheme.go"}

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/json/json_test.go

@@ -180,7 +180,7 @@ func TestDecode(t *testing.T) {
 		{
 			data:        []byte(`{"kind":"Test","apiVersion":"other/blah","value":1,"Other":"test"}`),
 			into:        &testDecodable{},
-			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind(schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
+			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind("mock", schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
 			expectedGVK: &schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"},
 			expectedObject: &testDecodable{
 				Other: "test",
@@ -257,7 +257,7 @@ func TestDecode(t *testing.T) {
 			// "VaLue" should have been "value"
 			data:        []byte(`{"kind":"Test","apiVersion":"other/blah","VaLue":1,"Other":"test"}`),
 			into:        &testDecodable{},
-			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind(schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
+			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind("mock", schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
 			expectedGVK: &schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"},
 			expectedObject: &testDecodable{
 				Other: "test",
@@ -268,7 +268,7 @@ func TestDecode(t *testing.T) {
 			// "b" should have been "B", "I" should have been "i"
 			data:        []byte(`{"kind":"Test","apiVersion":"other/blah","spec": {"A": 1, "b": 2, "h": 3, "I": 4}}`),
 			into:        &testDecodable{},
-			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind(schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
+			typer:       &mockTyper{err: runtime.NewNotRegisteredErrForKind("mock", schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"})},
 			expectedGVK: &schema.GroupVersionKind{Kind: "Test", Group: "other", Version: "blah"},
 			expectedObject: &testDecodable{
 				Spec: DecodableSpec{A: 1, H: 3},

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go

@@ -24,18 +24,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 )
 
-// NewCodecForScheme is a convenience method for callers that are using a scheme.
-func NewCodecForScheme(
-	// TODO: I should be a scheme interface?
-	scheme *runtime.Scheme,
-	encoder runtime.Encoder,
-	decoder runtime.Decoder,
-	encodeVersion runtime.GroupVersioner,
-	decodeVersion runtime.GroupVersioner,
-) runtime.Codec {
-	return NewCodec(encoder, decoder, runtime.UnsafeObjectConvertor(scheme), scheme, scheme, nil, encodeVersion, decodeVersion)
-}
-
 // NewDefaultingCodecForScheme is a convenience method for callers that are using a scheme.
 func NewDefaultingCodecForScheme(
 	// TODO: I should be a scheme interface?
@@ -45,7 +33,7 @@ func NewDefaultingCodecForScheme(
 	encodeVersion runtime.GroupVersioner,
 	decodeVersion runtime.GroupVersioner,
 ) runtime.Codec {
-	return NewCodec(encoder, decoder, runtime.UnsafeObjectConvertor(scheme), scheme, scheme, scheme, encodeVersion, decodeVersion)
+	return NewCodec(encoder, decoder, runtime.UnsafeObjectConvertor(scheme), scheme, scheme, scheme, encodeVersion, decodeVersion, scheme.Name())
 }
 
 // NewCodec takes objects in their internal versions and converts them to external versions before
@@ -60,6 +48,7 @@ func NewCodec(
 	defaulter runtime.ObjectDefaulter,
 	encodeVersion runtime.GroupVersioner,
 	decodeVersion runtime.GroupVersioner,
+	originalSchemeName string,
 ) runtime.Codec {
 	internal := &codec{
 		encoder:   encoder,
@@ -71,6 +60,8 @@ func NewCodec(
 
 		encodeVersion: encodeVersion,
 		decodeVersion: decodeVersion,
+
+		originalSchemeName: originalSchemeName,
 	}
 	return internal
 }
@@ -85,6 +76,9 @@ type codec struct {
 
 	encodeVersion runtime.GroupVersioner
 	decodeVersion runtime.GroupVersioner
+
+	// originalSchemeName is optional, but when filled in it holds the name of the scheme from which this codec originates
+	originalSchemeName string
 }
 
 // Decode attempts a decode of the object, then tries to convert it to the internal version. If into is provided and the decoding is
@@ -182,7 +176,7 @@ func (c *codec) Encode(obj runtime.Object, w io.Writer) error {
 			}
 			targetGVK, ok := c.encodeVersion.KindForGroupVersionKinds([]schema.GroupVersionKind{objGVK})
 			if !ok {
-				return runtime.NewNotRegisteredGVKErrForTarget(objGVK, c.encodeVersion)
+				return runtime.NewNotRegisteredGVKErrForTarget(c.originalSchemeName, objGVK, c.encodeVersion)
 			}
 			if targetGVK == objGVK {
 				return c.encoder.Encode(obj, w)

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning_test.go

@@ -72,7 +72,7 @@ func (d *testNestedDecodable) DecodeNestedObjects(_ runtime.Decoder) error {
 func TestNestedDecode(t *testing.T) {
 	n := &testNestedDecodable{nestedErr: fmt.Errorf("unable to decode")}
 	decoder := &mockSerializer{obj: n}
-	codec := NewCodec(nil, decoder, nil, nil, nil, nil, nil, nil)
+	codec := NewCodec(nil, decoder, nil, nil, nil, nil, nil, nil, "TestNestedDecode")
 	if _, _, err := codec.Decode([]byte(`{}`), nil, n); err != n.nestedErr {
 		t.Errorf("unexpected error: %v", err)
 	}
@@ -92,6 +92,7 @@ func TestNestedEncode(t *testing.T) {
 		&mockTyper{gvks: []schema.GroupVersionKind{{Kind: "test"}}},
 		nil,
 		schema.GroupVersion{Group: "other"}, nil,
+		"TestNestedEncode",
 	)
 	if err := codec.Encode(n, ioutil.Discard); err != n2.nestedErr {
 		t.Errorf("unexpected error: %v", err)
@@ -231,7 +232,7 @@ func TestDecode(t *testing.T) {
 
 	for i, test := range testCases {
 		t.Logf("%d", i)
-		s := NewCodec(test.serializer, test.serializer, test.convertor, test.creater, test.typer, test.defaulter, test.encodes, test.decodes)
+		s := NewCodec(test.serializer, test.serializer, test.convertor, test.creater, test.typer, test.defaulter, test.encodes, test.decodes, fmt.Sprintf("mock-%d", i))
 		obj, gvk, err := s.Decode([]byte(`{}`), test.defaultGVK, test.into)
 
 		if !reflect.DeepEqual(test.expectedGVK, gvk) {

staging/src/k8s.io/apimachinery/pkg/util/naming/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["from_stack.go"],
+    importmap = "k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/naming",
+    importpath = "k8s.io/apimachinery/pkg/util/naming",
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["from_stack_test.go"],
+    embed = [":go_default_library"],
+)

staging/src/k8s.io/apimachinery/pkg/util/naming/from_stack.go

+/*
+Copyright 2018 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.
+*/
+
+package naming
+
+import (
+	"fmt"
+	"regexp"
+	goruntime "runtime"
+	"runtime/debug"
+	"strconv"
+	"strings"
+)
+
+// GetNameFromCallsite walks back through the call stack until we find a caller from outside of the ignoredPackages
+// it returns back a shortpath/filename:line to aid in identification of this reflector when it starts logging
+func GetNameFromCallsite(ignoredPackages ...string) string {
+	name := "????"
+	const maxStack = 10
+	for i := 1; i < maxStack; i++ {
+		_, file, line, ok := goruntime.Caller(i)
+		if !ok {
+			file, line, ok = extractStackCreator()
+			if !ok {
+				break
+			}
+			i += maxStack
+		}
+		if hasPackage(file, append(ignoredPackages, "/runtime/asm_")) {
+			continue
+		}
+
+		file = trimPackagePrefix(file)
+		name = fmt.Sprintf("%s:%d", file, line)
+		break
+	}
+	return name
+}
+
+// hasPackage returns true if the file is in one of the ignored packages.
+func hasPackage(file string, ignoredPackages []string) bool {
+	for _, ignoredPackage := range ignoredPackages {
+		if strings.Contains(file, ignoredPackage) {
+			return true
+		}
+	}
+	return false
+}
+
+// trimPackagePrefix reduces duplicate values off the front of a package name.
+func trimPackagePrefix(file string) string {
+	if l := strings.LastIndex(file, "/vendor/"); l >= 0 {
+		return file[l+len("/vendor/"):]
+	}
+	if l := strings.LastIndex(file, "/src/"); l >= 0 {
+		return file[l+5:]
+	}
+	if l := strings.LastIndex(file, "/pkg/"); l >= 0 {
+		return file[l+1:]
+	}
+	return file
+}
+
+var stackCreator = regexp.MustCompile(`(?m)^created by (.*)\n\s+(.*):(\d+) \+0x[[:xdigit:]]+$`)
+
+// extractStackCreator retrieves the goroutine file and line that launched this stack. Returns false
+// if the creator cannot be located.
+// TODO: Go does not expose this via runtime https://github.com/golang/go/issues/11440
+func extractStackCreator() (string, int, bool) {
+	stack := debug.Stack()
+	matches := stackCreator.FindStringSubmatch(string(stack))
+	if matches == nil || len(matches) != 4 {
+		return "", 0, false
+	}
+	line, err := strconv.Atoi(matches[3])
+	if err != nil {
+		return "", 0, false
+	}
+	return matches[2], line, true
+}

staging/src/k8s.io/apimachinery/pkg/util/naming/from_stack_test.go

+/*
+Copyright 2018 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.
+*/
+
+package naming
+
+import "testing"
+
+func TestGetNameFromCallsite(t *testing.T) {
+	tests := []struct {
+		name            string
+		ignoredPackages []string
+		expected        string
+	}{
+		{
+			name:     "simple",
+			expected: "k8s.io/apimachinery/pkg/util/naming/from_stack_test.go:50",
+		},
+		{
+			name:            "ignore-package",
+			ignoredPackages: []string{"k8s.io/apimachinery/pkg/util/naming"},
+			expected:        "testing/testing.go:777",
+		},
+		{
+			name:            "ignore-file",
+			ignoredPackages: []string{"k8s.io/apimachinery/pkg/util/naming/from_stack_test.go"},
+			expected:        "testing/testing.go:777",
+		},
+		{
+			name:            "ignore-multiple",
+			ignoredPackages: []string{"k8s.io/apimachinery/pkg/util/naming/from_stack_test.go", "testing/testing.go"},
+			expected:        "????",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			actual := GetNameFromCallsite(tc.ignoredPackages...)
+			if tc.expected != actual {
+				t.Fatalf("expected %q, got %q", tc.expected, actual)
+			}
+		})
+	}
+}

staging/src/k8s.io/client-go/tools/cache/BUILD

@@ -74,6 +74,7 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/util/cache:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/clock:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/diff:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/util/naming:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",

staging/src/k8s.io/client-go/tools/cache/reflector.go

@@ -24,9 +24,6 @@ import (
 	"net"
 	"net/url"
 	"reflect"
-	"regexp"
-	goruntime "runtime"
-	"runtime/debug"
 	"strconv"
 	"strings"
 	"sync"
@@ -40,6 +37,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/clock"
+	"k8s.io/apimachinery/pkg/util/naming"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
@@ -94,7 +92,7 @@ func NewNamespaceKeyedIndexerAndReflector(lw ListerWatcher, expectedType interfa
 // resyncPeriod, so that you can use reflectors to periodically process everything as
 // well as incrementally processing the things that change.
 func NewReflector(lw ListerWatcher, expectedType interface{}, store Store, resyncPeriod time.Duration) *Reflector {
-	return NewNamedReflector(getDefaultReflectorName(internalPackages...), lw, expectedType, store, resyncPeriod)
+	return NewNamedReflector(naming.GetNameFromCallsite(internalPackages...), lw, expectedType, store, resyncPeriod)
 }
 
 // reflectorDisambiguator is used to disambiguate started reflectors.
@@ -125,74 +123,7 @@ func makeValidPrometheusMetricLabel(in string) string {
 
 // internalPackages are packages that ignored when creating a default reflector name. These packages are in the common
 // call chains to NewReflector, so they'd be low entropy names for reflectors
-var internalPackages = []string{"client-go/tools/cache/", "/runtime/asm_"}
-
-// getDefaultReflectorName walks back through the call stack until we find a caller from outside of the ignoredPackages
-// it returns back a shortpath/filename:line to aid in identification of this reflector when it starts logging
-func getDefaultReflectorName(ignoredPackages ...string) string {
-	name := "????"
-	const maxStack = 10
-	for i := 1; i < maxStack; i++ {
-		_, file, line, ok := goruntime.Caller(i)
-		if !ok {
-			file, line, ok = extractStackCreator()
-			if !ok {
-				break
-			}
-			i += maxStack
-		}
-		if hasPackage(file, ignoredPackages) {
-			continue
-		}
-
-		file = trimPackagePrefix(file)
-		name = fmt.Sprintf("%s:%d", file, line)
-		break
-	}
-	return name
-}
-
-// hasPackage returns true if the file is in one of the ignored packages.
-func hasPackage(file string, ignoredPackages []string) bool {
-	for _, ignoredPackage := range ignoredPackages {
-		if strings.Contains(file, ignoredPackage) {
-			return true
-		}
-	}
-	return false
-}
-
-// trimPackagePrefix reduces duplicate values off the front of a package name.
-func trimPackagePrefix(file string) string {
-	if l := strings.LastIndex(file, "k8s.io/client-go/pkg/"); l >= 0 {
-		return file[l+len("k8s.io/client-go/"):]
-	}
-	if l := strings.LastIndex(file, "/src/"); l >= 0 {
-		return file[l+5:]
-	}
-	if l := strings.LastIndex(file, "/pkg/"); l >= 0 {
-		return file[l+1:]
-	}
-	return file
-}
-
-var stackCreator = regexp.MustCompile(`(?m)^created by (.*)\n\s+(.*):(\d+) \+0x[[:xdigit:]]+$`)
-
-// extractStackCreator retrieves the goroutine file and line that launched this stack. Returns false
-// if the creator cannot be located.
-// TODO: Go does not expose this via runtime https://github.com/golang/go/issues/11440
-func extractStackCreator() (string, int, bool) {
-	stack := debug.Stack()
-	matches := stackCreator.FindStringSubmatch(string(stack))
-	if matches == nil || len(matches) != 4 {
-		return "", 0, false
-	}
-	line, err := strconv.Atoi(matches[3])
-	if err != nil {
-		return "", 0, false
-	}
-	return matches[2], line, true
-}
+var internalPackages = []string{"client-go/tools/cache/"}
 
 // Run starts a watch and handles watch events. Will restart the watch if it is closed.
 // Run will exit when stopCh is closed.

test/integration/framework/serializer.go

@@ -45,9 +45,9 @@ func (s *wrappedSerializer) UniversalDeserializer() runtime.Decoder {
 }
 
 func (s *wrappedSerializer) EncoderForVersion(encoder runtime.Encoder, gv runtime.GroupVersioner) runtime.Encoder {
-	return versioning.NewCodec(encoder, nil, s.scheme, s.scheme, s.scheme, s.scheme, gv, nil)
+	return versioning.NewCodec(encoder, nil, s.scheme, s.scheme, s.scheme, s.scheme, gv, nil, s.scheme.Name())
 }
 
 func (s *wrappedSerializer) DecoderToVersion(decoder runtime.Decoder, gv runtime.GroupVersioner) runtime.Decoder {
-	return versioning.NewCodec(nil, decoder, s.scheme, s.scheme, s.scheme, s.scheme, nil, gv)
+	return versioning.NewCodec(nil, decoder, s.scheme, s.scheme, s.scheme, s.scheme, nil, gv, s.scheme.Name())
 }