rebase: update kubernetes to 1.26.1

update kubernetes and its dependencies
to v1.26.1

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/sigs.k8s.io/controller-runtime/pkg/cache/cache.go

@@ -19,14 +19,18 @@ package cache
 import (
 	"context"
 	"fmt"
+	"reflect"
 	"time"
 
 	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/rest"
 	toolscache "k8s.io/client-go/tools/cache"
+
 	"sigs.k8s.io/controller-runtime/pkg/cache/internal"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
@@ -74,11 +78,19 @@ type Informer interface {
 	// AddEventHandler adds an event handler to the shared informer using the shared informer's resync
 	// period.  Events to a single handler are delivered sequentially, but there is no coordination
 	// between different handlers.
-	AddEventHandler(handler toolscache.ResourceEventHandler)
+	// It returns a registration handle for the handler that can be used to remove
+	// the handler again.
+	AddEventHandler(handler toolscache.ResourceEventHandler) (toolscache.ResourceEventHandlerRegistration, error)
 	// AddEventHandlerWithResyncPeriod adds an event handler to the shared informer using the
 	// specified resync period.  Events to a single handler are delivered sequentially, but there is
 	// no coordination between different handlers.
-	AddEventHandlerWithResyncPeriod(handler toolscache.ResourceEventHandler, resyncPeriod time.Duration)
+	// It returns a registration handle for the handler that can be used to remove
+	// the handler again and an error if the handler cannot be added.
+	AddEventHandlerWithResyncPeriod(handler toolscache.ResourceEventHandler, resyncPeriod time.Duration) (toolscache.ResourceEventHandlerRegistration, error)
+	// RemoveEventHandler removes a formerly added event handler given by
+	// its registration handle.
+	// This function is guaranteed to be idempotent, and thread-safe.
+	RemoveEventHandler(handle toolscache.ResourceEventHandlerRegistration) error
 	// AddIndexers adds more indexers to this store.  If you call this after you already have data
 	// in the store, the results are undefined.
 	AddIndexers(indexers toolscache.Indexers) error
@@ -128,6 +140,18 @@ type Options struct {
 	// Be very careful with this, when enabled you must DeepCopy any object before mutating it,
 	// otherwise you will mutate the object in the cache.
 	UnsafeDisableDeepCopyByObject DisableDeepCopyByObject
+
+	// TransformByObject is a map from GVKs to transformer functions which
+	// get applied when objects of the transformation are about to be committed
+	// to cache.
+	//
+	// This function is called both for new objects to enter the cache,
+	// 	and for updated objects.
+	TransformByObject TransformByObject
+
+	// DefaultTransform is the transform used for all GVKs which do
+	// not have an explicit transform func set in TransformByObject
+	DefaultTransform toolscache.TransformFunc
 }
 
 var defaultResyncTime = 10 * time.Hour
@@ -138,7 +162,7 @@ func New(config *rest.Config, opts Options) (Cache, error) {
 	if err != nil {
 		return nil, err
 	}
-	selectorsByGVK, err := convertToSelectorsByGVK(opts.SelectorsByObject, opts.DefaultSelector, opts.Scheme)
+	selectorsByGVK, err := convertToByGVK(opts.SelectorsByObject, opts.DefaultSelector, opts.Scheme)
 	if err != nil {
 		return nil, err
 	}
@@ -146,36 +170,234 @@ func New(config *rest.Config, opts Options) (Cache, error) {
 	if err != nil {
 		return nil, err
 	}
-	im := internal.NewInformersMap(config, opts.Scheme, opts.Mapper, *opts.Resync, opts.Namespace, selectorsByGVK, disableDeepCopyByGVK)
+	transformByGVK, err := convertToByGVK(opts.TransformByObject, opts.DefaultTransform, opts.Scheme)
+	if err != nil {
+		return nil, err
+	}
+	transformByObj := internal.TransformFuncByObjectFromMap(transformByGVK)
+
+	internalSelectorsByGVK := internal.SelectorsByGVK{}
+	for gvk, selector := range selectorsByGVK {
+		internalSelectorsByGVK[gvk] = internal.Selector(selector)
+	}
+
+	im := internal.NewInformersMap(config, opts.Scheme, opts.Mapper, *opts.Resync, opts.Namespace, internalSelectorsByGVK, disableDeepCopyByGVK, transformByObj)
 	return &informerCache{InformersMap: im}, nil
 }
 
-// BuilderWithOptions returns a Cache constructor that will build the a cache
+// BuilderWithOptions returns a Cache constructor that will build a cache
 // honoring the options argument, this is useful to specify options like
 // SelectorsByObject
-// WARNING: if SelectorsByObject is specified. filtered out resources are not
-//          returned.
-// WARNING: if UnsafeDisableDeepCopy is enabled, you must DeepCopy any object
-//          returned from cache get/list before mutating it.
+// WARNING: If SelectorsByObject is specified, filtered out resources are not
+// returned.
+// WARNING: If UnsafeDisableDeepCopy is enabled, you must DeepCopy any object
+// returned from cache get/list before mutating it.
 func BuilderWithOptions(options Options) NewCacheFunc {
-	return func(config *rest.Config, opts Options) (Cache, error) {
-		if options.Scheme == nil {
-			options.Scheme = opts.Scheme
+	return func(config *rest.Config, inherited Options) (Cache, error) {
+		var err error
+		inherited, err = defaultOpts(config, inherited)
+		if err != nil {
+			return nil, err
 		}
-		if options.Mapper == nil {
-			options.Mapper = opts.Mapper
+		options, err = defaultOpts(config, options)
+		if err != nil {
+			return nil, err
 		}
-		if options.Resync == nil {
-			options.Resync = opts.Resync
-		}
-		if options.Namespace == "" {
-			options.Namespace = opts.Namespace
-		}
-		if opts.Resync == nil {
-			opts.Resync = options.Resync
+		combined, err := options.inheritFrom(inherited)
+		if err != nil {
+			return nil, err
 		}
+		return New(config, *combined)
+	}
+}
 
-		return New(config, options)
+func (options Options) inheritFrom(inherited Options) (*Options, error) {
+	var (
+		combined Options
+		err      error
+	)
+	combined.Scheme = combineScheme(inherited.Scheme, options.Scheme)
+	combined.Mapper = selectMapper(inherited.Mapper, options.Mapper)
+	combined.Resync = selectResync(inherited.Resync, options.Resync)
+	combined.Namespace = selectNamespace(inherited.Namespace, options.Namespace)
+	combined.SelectorsByObject, combined.DefaultSelector, err = combineSelectors(inherited, options, combined.Scheme)
+	if err != nil {
+		return nil, err
+	}
+	combined.UnsafeDisableDeepCopyByObject, err = combineUnsafeDeepCopy(inherited, options, combined.Scheme)
+	if err != nil {
+		return nil, err
+	}
+	combined.TransformByObject, combined.DefaultTransform, err = combineTransforms(inherited, options, combined.Scheme)
+	if err != nil {
+		return nil, err
+	}
+	return &combined, nil
+}
+
+func combineScheme(schemes ...*runtime.Scheme) *runtime.Scheme {
+	var out *runtime.Scheme
+	for _, sch := range schemes {
+		if sch == nil {
+			continue
+		}
+		for gvk, t := range sch.AllKnownTypes() {
+			if out == nil {
+				out = runtime.NewScheme()
+			}
+			out.AddKnownTypeWithName(gvk, reflect.New(t).Interface().(runtime.Object))
+		}
+	}
+	return out
+}
+
+func selectMapper(def, override meta.RESTMapper) meta.RESTMapper {
+	if override != nil {
+		return override
+	}
+	return def
+}
+
+func selectResync(def, override *time.Duration) *time.Duration {
+	if override != nil {
+		return override
+	}
+	return def
+}
+
+func selectNamespace(def, override string) string {
+	if override != "" {
+		return override
+	}
+	return def
+}
+
+func combineSelectors(inherited, options Options, scheme *runtime.Scheme) (SelectorsByObject, ObjectSelector, error) {
+	// Selectors are combined via logical AND.
+	//  - Combined label selector is a union of the selectors requirements from both sets of options.
+	//  - Combined field selector uses fields.AndSelectors with the combined list of non-nil field selectors
+	//    defined in both sets of options.
+	//
+	// There is a bunch of complexity here because we need to convert to SelectorsByGVK
+	// to be able to match keys between options and inherited and then convert back to SelectorsByObject
+	optionsSelectorsByGVK, err := convertToByGVK(options.SelectorsByObject, options.DefaultSelector, scheme)
+	if err != nil {
+		return nil, ObjectSelector{}, err
+	}
+	inheritedSelectorsByGVK, err := convertToByGVK(inherited.SelectorsByObject, inherited.DefaultSelector, inherited.Scheme)
+	if err != nil {
+		return nil, ObjectSelector{}, err
+	}
+
+	for gvk, inheritedSelector := range inheritedSelectorsByGVK {
+		optionsSelectorsByGVK[gvk] = combineSelector(inheritedSelector, optionsSelectorsByGVK[gvk])
+	}
+	return convertToByObject(optionsSelectorsByGVK, scheme)
+}
+
+func combineSelector(selectors ...ObjectSelector) ObjectSelector {
+	ls := make([]labels.Selector, 0, len(selectors))
+	fs := make([]fields.Selector, 0, len(selectors))
+	for _, s := range selectors {
+		ls = append(ls, s.Label)
+		fs = append(fs, s.Field)
+	}
+	return ObjectSelector{
+		Label: combineLabelSelectors(ls...),
+		Field: combineFieldSelectors(fs...),
+	}
+}
+
+func combineLabelSelectors(ls ...labels.Selector) labels.Selector {
+	var combined labels.Selector
+	for _, l := range ls {
+		if l == nil {
+			continue
+		}
+		if combined == nil {
+			combined = labels.NewSelector()
+		}
+		reqs, _ := l.Requirements()
+		combined = combined.Add(reqs...)
+	}
+	return combined
+}
+
+func combineFieldSelectors(fs ...fields.Selector) fields.Selector {
+	nonNil := fs[:0]
+	for _, f := range fs {
+		if f == nil {
+			continue
+		}
+		nonNil = append(nonNil, f)
+	}
+	if len(nonNil) == 0 {
+		return nil
+	}
+	if len(nonNil) == 1 {
+		return nonNil[0]
+	}
+	return fields.AndSelectors(nonNil...)
+}
+
+func combineUnsafeDeepCopy(inherited, options Options, scheme *runtime.Scheme) (DisableDeepCopyByObject, error) {
+	// UnsafeDisableDeepCopyByObject is combined via precedence. Only if a value for a particular GVK is unset
+	// in options will a value from inherited be used.
+	optionsDisableDeepCopyByGVK, err := convertToDisableDeepCopyByGVK(options.UnsafeDisableDeepCopyByObject, options.Scheme)
+	if err != nil {
+		return nil, err
+	}
+	inheritedDisableDeepCopyByGVK, err := convertToDisableDeepCopyByGVK(inherited.UnsafeDisableDeepCopyByObject, inherited.Scheme)
+	if err != nil {
+		return nil, err
+	}
+
+	for gvk, inheritedDeepCopy := range inheritedDisableDeepCopyByGVK {
+		if _, ok := optionsDisableDeepCopyByGVK[gvk]; !ok {
+			if optionsDisableDeepCopyByGVK == nil {
+				optionsDisableDeepCopyByGVK = map[schema.GroupVersionKind]bool{}
+			}
+			optionsDisableDeepCopyByGVK[gvk] = inheritedDeepCopy
+		}
+	}
+	return convertToDisableDeepCopyByObject(optionsDisableDeepCopyByGVK, scheme)
+}
+
+func combineTransforms(inherited, options Options, scheme *runtime.Scheme) (TransformByObject, toolscache.TransformFunc, error) {
+	// Transform functions are combined via chaining. If both inherited and options define a transform
+	// function, the transform function from inherited will be called first, and the transform function from
+	// options will be called second.
+	optionsTransformByGVK, err := convertToByGVK(options.TransformByObject, options.DefaultTransform, options.Scheme)
+	if err != nil {
+		return nil, nil, err
+	}
+	inheritedTransformByGVK, err := convertToByGVK(inherited.TransformByObject, inherited.DefaultTransform, inherited.Scheme)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	for gvk, inheritedTransform := range inheritedTransformByGVK {
+		if optionsTransformByGVK == nil {
+			optionsTransformByGVK = map[schema.GroupVersionKind]toolscache.TransformFunc{}
+		}
+		optionsTransformByGVK[gvk] = combineTransform(inheritedTransform, optionsTransformByGVK[gvk])
+	}
+	return convertToByObject(optionsTransformByGVK, scheme)
+}
+
+func combineTransform(inherited, current toolscache.TransformFunc) toolscache.TransformFunc {
+	if inherited == nil {
+		return current
+	}
+	if current == nil {
+		return inherited
+	}
+	return func(in interface{}) (interface{}, error) {
+		mid, err := inherited(in)
+		if err != nil {
+			return nil, err
+		}
+		return current(mid)
 	}
 }
 
@@ -202,17 +424,40 @@ func defaultOpts(config *rest.Config, opts Options) (Options, error) {
 	return opts, nil
 }
 
-func convertToSelectorsByGVK(selectorsByObject SelectorsByObject, defaultSelector ObjectSelector, scheme *runtime.Scheme) (internal.SelectorsByGVK, error) {
-	selectorsByGVK := internal.SelectorsByGVK{}
-	for object, selector := range selectorsByObject {
+func convertToByGVK[T any](byObject map[client.Object]T, def T, scheme *runtime.Scheme) (map[schema.GroupVersionKind]T, error) {
+	byGVK := map[schema.GroupVersionKind]T{}
+	for object, value := range byObject {
 		gvk, err := apiutil.GVKForObject(object, scheme)
 		if err != nil {
 			return nil, err
 		}
-		selectorsByGVK[gvk] = internal.Selector(selector)
+		byGVK[gvk] = value
 	}
-	selectorsByGVK[schema.GroupVersionKind{}] = internal.Selector(defaultSelector)
-	return selectorsByGVK, nil
+	byGVK[schema.GroupVersionKind{}] = def
+	return byGVK, nil
+}
+
+func convertToByObject[T any](byGVK map[schema.GroupVersionKind]T, scheme *runtime.Scheme) (map[client.Object]T, T, error) {
+	var byObject map[client.Object]T
+	def := byGVK[schema.GroupVersionKind{}]
+	for gvk, value := range byGVK {
+		if gvk == (schema.GroupVersionKind{}) {
+			continue
+		}
+		obj, err := scheme.New(gvk)
+		if err != nil {
+			return nil, def, err
+		}
+		cObj, ok := obj.(client.Object)
+		if !ok {
+			return nil, def, fmt.Errorf("object %T for GVK %q does not implement client.Object", obj, gvk)
+		}
+		if byObject == nil {
+			byObject = map[client.Object]T{}
+		}
+		byObject[cObj] = value
+	}
+	return byObject, def, nil
 }
 
 // DisableDeepCopyByObject associate a client.Object's GVK to disable DeepCopy during get or list from cache.
@@ -241,3 +486,31 @@ func convertToDisableDeepCopyByGVK(disableDeepCopyByObject DisableDeepCopyByObje
 	}
 	return disableDeepCopyByGVK, nil
 }
+
+func convertToDisableDeepCopyByObject(byGVK internal.DisableDeepCopyByGVK, scheme *runtime.Scheme) (DisableDeepCopyByObject, error) {
+	var byObject DisableDeepCopyByObject
+	for gvk, value := range byGVK {
+		if byObject == nil {
+			byObject = DisableDeepCopyByObject{}
+		}
+		if gvk == (schema.GroupVersionKind{}) {
+			byObject[ObjectAll{}] = value
+			continue
+		}
+		obj, err := scheme.New(gvk)
+		if err != nil {
+			return nil, err
+		}
+		cObj, ok := obj.(client.Object)
+		if !ok {
+			return nil, fmt.Errorf("object %T for GVK %q does not implement client.Object", obj, gvk)
+		}
+
+		byObject[cObj] = value
+	}
+	return byObject, nil
+}
+
+// TransformByObject associate a client.Object's GVK to a transformer function
+// to be applied when storing the object into the cache.
+type TransformByObject map[client.Object]toolscache.TransformFunc

vendor/sigs.k8s.io/controller-runtime/pkg/cache/informer_cache.go

@@ -51,7 +51,7 @@ type informerCache struct {
 }
 
 // Get implements Reader.
-func (ip *informerCache) Get(ctx context.Context, key client.ObjectKey, out client.Object) error {
+func (ip *informerCache) Get(ctx context.Context, key client.ObjectKey, out client.Object, opts ...client.GetOption) error {
 	gvk, err := apiutil.GVKForObject(out, ip.Scheme)
 	if err != nil {
 		return err
@@ -96,11 +96,11 @@ func (ip *informerCache) objectTypeForListObject(list client.ObjectList) (*schem
 		return nil, nil, err
 	}
 
-	if !strings.HasSuffix(gvk.Kind, "List") {
-		return nil, nil, fmt.Errorf("non-list type %T (kind %q) passed as output", list, gvk)
-	}
 	// we need the non-list GVK, so chop off the "List" from the end of the kind
-	gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
+	if strings.HasSuffix(gvk.Kind, "List") && apimeta.IsListType(list) {
+		gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
+	}
+
 	_, isUnstructured := list.(*unstructured.UnstructuredList)
 	var cacheTypeObj runtime.Object
 	if isUnstructured {
@@ -193,8 +193,8 @@ func indexByField(indexer Informer, field string, extractor client.IndexerFunc)
 		rawVals := extractor(obj)
 		var vals []string
 		if ns == "" {
-			// if we're not doubling the keys for the namespaced case, just re-use what was returned to us
-			vals = rawVals
+			// if we're not doubling the keys for the namespaced case, just create a new slice with same length
+			vals = make([]string, len(rawVals))
 		} else {
 			// if we need to add non-namespaced versions too, double the length
 			vals = make([]string, len(rawVals)*2)

vendor/sigs.k8s.io/controller-runtime/pkg/cache/internal/cache_reader.go

@@ -23,12 +23,11 @@ import (
 
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	apimeta "k8s.io/apimachinery/pkg/api/meta"
-	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/selection"
 	"k8s.io/client-go/tools/cache"
+	"sigs.k8s.io/controller-runtime/pkg/internal/field/selector"
 
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
@@ -54,7 +53,7 @@ type CacheReader struct {
 }
 
 // Get checks the indexer for the object and writes a copy of it if found.
-func (c *CacheReader) Get(_ context.Context, key client.ObjectKey, out client.Object) error {
+func (c *CacheReader) Get(_ context.Context, key client.ObjectKey, out client.Object, opts ...client.GetOption) error {
 	if c.scopeName == apimeta.RESTScopeNameRoot {
 		key.Namespace = ""
 	}
@@ -116,7 +115,7 @@ func (c *CacheReader) List(_ context.Context, out client.ObjectList, opts ...cli
 	case listOpts.FieldSelector != nil:
 		// TODO(directxman12): support more complicated field selectors by
 		// combining multiple indices, GetIndexers, etc
-		field, val, requiresExact := requiresExactMatch(listOpts.FieldSelector)
+		field, val, requiresExact := selector.RequiresExactMatch(listOpts.FieldSelector)
 		if !requiresExact {
 			return fmt.Errorf("non-exact field matches are not supported by the cache")
 		}
@@ -162,7 +161,7 @@ func (c *CacheReader) List(_ context.Context, out client.ObjectList, opts ...cli
 		}
 
 		var outObj runtime.Object
-		if c.disableDeepCopy {
+		if c.disableDeepCopy || (listOpts.UnsafeDisableDeepCopy != nil && *listOpts.UnsafeDisableDeepCopy) {
 			// skip deep copy which might be unsafe
 			// you must DeepCopy any object before mutating it outside
 			outObj = obj
@@ -186,19 +185,6 @@ func objectKeyToStoreKey(k client.ObjectKey) string {
 	return k.Namespace + "/" + k.Name
 }
 
-// requiresExactMatch checks if the given field selector is of the form `k=v` or `k==v`.
-func requiresExactMatch(sel fields.Selector) (field, val string, required bool) {
-	reqs := sel.Requirements()
-	if len(reqs) != 1 {
-		return "", "", false
-	}
-	req := reqs[0]
-	if req.Operator != selection.Equals && req.Operator != selection.DoubleEquals {
-		return "", "", false
-	}
-	return req.Field, req.Value, true
-}
-
 // FieldIndexName constructs the name of the index over the given field,
 // for use with an indexer.
 func FieldIndexName(field string) string {

vendor/sigs.k8s.io/controller-runtime/pkg/cache/internal/deleg_map.go

@@ -52,11 +52,12 @@ func NewInformersMap(config *rest.Config,
 	namespace string,
 	selectors SelectorsByGVK,
 	disableDeepCopy DisableDeepCopyByGVK,
+	transformers TransformFuncByObject,
 ) *InformersMap {
 	return &InformersMap{
-		structured:   newStructuredInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy),
-		unstructured: newUnstructuredInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy),
-		metadata:     newMetadataInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy),
+		structured:   newStructuredInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers),
+		unstructured: newUnstructuredInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers),
+		metadata:     newMetadataInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers),
 
 		Scheme: scheme,
 	}
@@ -108,18 +109,18 @@ func (m *InformersMap) Get(ctx context.Context, gvk schema.GroupVersionKind, obj
 
 // newStructuredInformersMap creates a new InformersMap for structured objects.
 func newStructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration,
-	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK) *specificInformersMap {
-	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, createStructuredListWatch)
+	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK, transformers TransformFuncByObject) *specificInformersMap {
+	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers, createStructuredListWatch)
 }
 
 // newUnstructuredInformersMap creates a new InformersMap for unstructured objects.
 func newUnstructuredInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration,
-	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK) *specificInformersMap {
-	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, createUnstructuredListWatch)
+	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK, transformers TransformFuncByObject) *specificInformersMap {
+	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers, createUnstructuredListWatch)
 }
 
 // newMetadataInformersMap creates a new InformersMap for metadata-only objects.
 func newMetadataInformersMap(config *rest.Config, scheme *runtime.Scheme, mapper meta.RESTMapper, resync time.Duration,
-	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK) *specificInformersMap {
-	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, createMetadataListWatch)
+	namespace string, selectors SelectorsByGVK, disableDeepCopy DisableDeepCopyByGVK, transformers TransformFuncByObject) *specificInformersMap {
+	return newSpecificInformersMap(config, scheme, mapper, resync, namespace, selectors, disableDeepCopy, transformers, createMetadataListWatch)
 }

vendor/sigs.k8s.io/controller-runtime/pkg/cache/internal/informers_map.go

@@ -54,7 +54,9 @@ func newSpecificInformersMap(config *rest.Config,
 	namespace string,
 	selectors SelectorsByGVK,
 	disableDeepCopy DisableDeepCopyByGVK,
-	createListWatcher createListWatcherFunc) *specificInformersMap {
+	transformers TransformFuncByObject,
+	createListWatcher createListWatcherFunc,
+) *specificInformersMap {
 	ip := &specificInformersMap{
 		config:            config,
 		Scheme:            scheme,
@@ -68,6 +70,7 @@ func newSpecificInformersMap(config *rest.Config,
 		namespace:         namespace,
 		selectors:         selectors.forGVK,
 		disableDeepCopy:   disableDeepCopy,
+		transformers:      transformers,
 	}
 	return ip
 }
@@ -135,6 +138,9 @@ type specificInformersMap struct {
 
 	// disableDeepCopy indicates not to deep copy objects during get or list objects.
 	disableDeepCopy DisableDeepCopyByGVK
+
+	// transform funcs are applied to objects before they are committed to the cache
+	transformers TransformFuncByObject
 }
 
 // Start calls Run on each of the informers and sets started to true.  Blocks on the context.
@@ -227,6 +233,12 @@ func (ip *specificInformersMap) addInformerToMap(gvk schema.GroupVersionKind, ob
 	ni := cache.NewSharedIndexInformer(lw, obj, resyncPeriod(ip.resync)(), cache.Indexers{
 		cache.NamespaceIndex: cache.MetaNamespaceIndexFunc,
 	})
+
+	// Check to see if there is a transformer for this gvk
+	if err := ni.SetTransform(ip.transformers.Get(gvk)); err != nil {
+		return nil, false, err
+	}
+
 	rm, err := ip.mapper.RESTMapping(gvk.GroupKind(), gvk.Version)
 	if err != nil {
 		return nil, false, err
@@ -409,41 +421,31 @@ func createMetadataListWatch(gvk schema.GroupVersionKind, ip *specificInformersM
 	}, nil
 }
 
-type gvkFixupWatcher struct {
-	watcher watch.Interface
-	ch      chan watch.Event
-	gvk     schema.GroupVersionKind
-	wg      sync.WaitGroup
-}
-
+// newGVKFixupWatcher adds a wrapper that preserves the GVK information when
+// events come in.
+//
+// This works around a bug where GVK information is not passed into mapping
+// functions when using the OnlyMetadata option in the builder.
+// This issue is most likely caused by kubernetes/kubernetes#80609.
+// See kubernetes-sigs/controller-runtime#1484.
+//
+// This was originally implemented as a cache.ResourceEventHandler wrapper but
+// that contained a data race which was resolved by setting the GVK in a watch
+// wrapper, before the objects are written to the cache.
+// See kubernetes-sigs/controller-runtime#1650.
+//
+// The original watch wrapper was found to be incompatible with
+// k8s.io/client-go/tools/cache.Reflector so it has been re-implemented as a
+// watch.Filter which is compatible.
+// See kubernetes-sigs/controller-runtime#1789.
 func newGVKFixupWatcher(gvk schema.GroupVersionKind, watcher watch.Interface) watch.Interface {
-	ch := make(chan watch.Event)
-	w := &gvkFixupWatcher{
-		gvk:     gvk,
-		watcher: watcher,
-		ch:      ch,
-	}
-	w.wg.Add(1)
-	go w.run()
-	return w
-}
-
-func (w *gvkFixupWatcher) run() {
-	for e := range w.watcher.ResultChan() {
-		e.Object.GetObjectKind().SetGroupVersionKind(w.gvk)
-		w.ch <- e
-	}
-	w.wg.Done()
-}
-
-func (w *gvkFixupWatcher) Stop() {
-	w.watcher.Stop()
-	w.wg.Wait()
-	close(w.ch)
-}
-
-func (w *gvkFixupWatcher) ResultChan() <-chan watch.Event {
-	return w.ch
+	return watch.Filter(
+		watcher,
+		func(in watch.Event) (watch.Event, bool) {
+			in.Object.GetObjectKind().SetGroupVersionKind(gvk)
+			return in, true
+		},
+	)
 }
 
 // resyncPeriod returns a function which generates a duration each time it is

vendor/sigs.k8s.io/controller-runtime/pkg/cache/internal/transformers.go

@@ -0,0 +1,55 @@
+package internal
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/tools/cache"
+
+	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
+)
+
+// TransformFuncByObject provides access to the correct transform function for
+// any given GVK.
+type TransformFuncByObject interface {
+	Set(runtime.Object, *runtime.Scheme, cache.TransformFunc) error
+	Get(schema.GroupVersionKind) cache.TransformFunc
+	SetDefault(transformer cache.TransformFunc)
+}
+
+type transformFuncByGVK struct {
+	defaultTransform cache.TransformFunc
+	transformers     map[schema.GroupVersionKind]cache.TransformFunc
+}
+
+// TransformFuncByObjectFromMap creates a TransformFuncByObject from a map that
+// maps GVKs to TransformFuncs.
+func TransformFuncByObjectFromMap(in map[schema.GroupVersionKind]cache.TransformFunc) TransformFuncByObject {
+	byGVK := &transformFuncByGVK{}
+	if defaultFunc, hasDefault := in[schema.GroupVersionKind{}]; hasDefault {
+		byGVK.defaultTransform = defaultFunc
+	}
+	delete(in, schema.GroupVersionKind{})
+	byGVK.transformers = in
+	return byGVK
+}
+
+func (t *transformFuncByGVK) SetDefault(transformer cache.TransformFunc) {
+	t.defaultTransform = transformer
+}
+
+func (t *transformFuncByGVK) Set(obj runtime.Object, scheme *runtime.Scheme, transformer cache.TransformFunc) error {
+	gvk, err := apiutil.GVKForObject(obj, scheme)
+	if err != nil {
+		return err
+	}
+
+	t.transformers[gvk] = transformer
+	return nil
+}
+
+func (t transformFuncByGVK) Get(gvk schema.GroupVersionKind) cache.TransformFunc {
+	if val, ok := t.transformers[gvk]; ok {
+		return val
+	}
+	return t.defaultTransform
+}

vendor/sigs.k8s.io/controller-runtime/pkg/cache/multi_namespace_cache.go

@@ -55,7 +55,7 @@ func MultiNamespacedCacheBuilder(namespaces []string) NewCacheFunc {
 		// create a cache for cluster scoped resources
 		gCache, err := New(config, opts)
 		if err != nil {
-			return nil, fmt.Errorf("error creating global cache %v", err)
+			return nil, fmt.Errorf("error creating global cache: %w", err)
 		}
 
 		for _, ns := range namespaces {
@@ -200,7 +200,7 @@ func (c *multiNamespaceCache) IndexField(ctx context.Context, obj client.Object,
 	return nil
 }
 
-func (c *multiNamespaceCache) Get(ctx context.Context, key client.ObjectKey, obj client.Object) error {
+func (c *multiNamespaceCache) Get(ctx context.Context, key client.ObjectKey, obj client.Object, opts ...client.GetOption) error {
 	isNamespaced, err := objectutil.IsAPINamespaced(obj, c.Scheme, c.RESTMapper)
 	if err != nil {
 		return err
@@ -296,17 +296,47 @@ type multiNamespaceInformer struct {
 var _ Informer = &multiNamespaceInformer{}
 
 // AddEventHandler adds the handler to each namespaced informer.
-func (i *multiNamespaceInformer) AddEventHandler(handler toolscache.ResourceEventHandler) {
-	for _, informer := range i.namespaceToInformer {
-		informer.AddEventHandler(handler)
+func (i *multiNamespaceInformer) AddEventHandler(handler toolscache.ResourceEventHandler) (toolscache.ResourceEventHandlerRegistration, error) {
+	handles := make(map[string]toolscache.ResourceEventHandlerRegistration, len(i.namespaceToInformer))
+	for ns, informer := range i.namespaceToInformer {
+		registration, err := informer.AddEventHandler(handler)
+		if err != nil {
+			return nil, err
+		}
+		handles[ns] = registration
 	}
+	return handles, nil
 }
 
 // AddEventHandlerWithResyncPeriod adds the handler with a resync period to each namespaced informer.
-func (i *multiNamespaceInformer) AddEventHandlerWithResyncPeriod(handler toolscache.ResourceEventHandler, resyncPeriod time.Duration) {
-	for _, informer := range i.namespaceToInformer {
-		informer.AddEventHandlerWithResyncPeriod(handler, resyncPeriod)
+func (i *multiNamespaceInformer) AddEventHandlerWithResyncPeriod(handler toolscache.ResourceEventHandler, resyncPeriod time.Duration) (toolscache.ResourceEventHandlerRegistration, error) {
+	handles := make(map[string]toolscache.ResourceEventHandlerRegistration, len(i.namespaceToInformer))
+	for ns, informer := range i.namespaceToInformer {
+		registration, err := informer.AddEventHandlerWithResyncPeriod(handler, resyncPeriod)
+		if err != nil {
+			return nil, err
+		}
+		handles[ns] = registration
 	}
+	return handles, nil
+}
+
+// RemoveEventHandler removes a formerly added event handler given by its registration handle.
+func (i *multiNamespaceInformer) RemoveEventHandler(h toolscache.ResourceEventHandlerRegistration) error {
+	handles, ok := h.(map[string]toolscache.ResourceEventHandlerRegistration)
+	if !ok {
+		return fmt.Errorf("it is not the registration returned by multiNamespaceInformer")
+	}
+	for ns, informer := range i.namespaceToInformer {
+		registration, ok := handles[ns]
+		if !ok {
+			continue
+		}
+		if err := informer.RemoveEventHandler(registration); err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 // AddIndexers adds the indexer for each namespaced informer.