add CodecFactoryOptions for codecfactory

Author: Chaunceyctx

pkg/cache/cache.go

@@ -140,6 +140,9 @@ type Options struct {
 	// Scheme is the scheme to use for mapping objects to GroupVersionKinds
 	Scheme *runtime.Scheme
 
+	// CodecFactoryOptionsByObject are used to indicate whether enable strict/pretty mode of codecFactory for specific object
+	CodecFactoryOptionsByObject map[client.Object]client.CodecFactoryOptions
+
 	// Mapper is the RESTMapper to use for mapping GroupVersionKinds to Resources
 	Mapper meta.RESTMapper
 
@@ -420,11 +423,12 @@ func newCache(restConfig *rest.Config, opts Options) newCacheFunc {
 		return &informerCache{
 			scheme: opts.Scheme,
 			Informers: internal.NewInformers(restConfig, &internal.InformersOpts{
-				HTTPClient:   opts.HTTPClient,
-				Scheme:       opts.Scheme,
-				Mapper:       opts.Mapper,
-				ResyncPeriod: *opts.SyncPeriod,
-				Namespace:    namespace,
+				HTTPClient:                  opts.HTTPClient,
+				Scheme:                      opts.Scheme,
+				CodecFactoryOptionsByObject: opts.CodecFactoryOptionsByObject,
+				Mapper:                      opts.Mapper,
+				ResyncPeriod:                *opts.SyncPeriod,
+				Namespace:                   namespace,
 				Selector: internal.Selector{
 					Label: config.LabelSelector,
 					Field: config.FieldSelector,

pkg/cache/internal/informers.go

@@ -36,23 +36,25 @@ import (
 	"k8s.io/client-go/metadata"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/cache"
+	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
 	"sigs.k8s.io/controller-runtime/pkg/internal/syncs"
 )
 
 // InformersOpts configures an InformerMap.
 type InformersOpts struct {
-	HTTPClient            *http.Client
-	Scheme                *runtime.Scheme
-	Mapper                meta.RESTMapper
-	ResyncPeriod          time.Duration
-	Namespace             string
-	NewInformer           func(cache.ListerWatcher, runtime.Object, time.Duration, cache.Indexers) cache.SharedIndexInformer
-	Selector              Selector
-	Transform             cache.TransformFunc
-	UnsafeDisableDeepCopy bool
-	EnableWatchBookmarks  bool
-	WatchErrorHandler     cache.WatchErrorHandler
+	HTTPClient                  *http.Client
+	Scheme                      *runtime.Scheme
+	CodecFactoryOptionsByObject map[client.Object]client.CodecFactoryOptions
+	Mapper                      meta.RESTMapper
+	ResyncPeriod                time.Duration
+	Namespace                   string
+	NewInformer                 func(cache.ListerWatcher, runtime.Object, time.Duration, cache.Indexers) cache.SharedIndexInformer
+	Selector                    Selector
+	Transform                   cache.TransformFunc
+	UnsafeDisableDeepCopy       bool
+	EnableWatchBookmarks        bool
+	WatchErrorHandler           cache.WatchErrorHandler
 }
 
 // NewInformers creates a new InformersMap that can create informers under the hood.
@@ -61,6 +63,23 @@ func NewInformers(config *rest.Config, options *InformersOpts) *Informers {
 	if options.NewInformer != nil {
 		newInformer = options.NewInformer
 	}
+
+	codecFactories := make(map[schema.GroupVersionKind]serializer.CodecFactory)
+	for obj, codecFactoryOptions := range options.CodecFactoryOptionsByObject {
+		gvk, err := apiutil.GVKForObject(obj, options.Scheme)
+		if err != nil {
+			continue
+		}
+		var mutators []serializer.CodecFactoryOptionsMutator
+		if codecFactoryOptions.Strict {
+			mutators = append(mutators, serializer.EnableStrict)
+		}
+		if codecFactoryOptions.Pretty {
+			mutators = append(mutators, serializer.EnablePretty)
+		}
+		codecFactories[gvk] = serializer.NewCodecFactory(options.Scheme, mutators...)
+	}
+
 	return &Informers{
 		config:     config,
 		httpClient: options.HTTPClient,
@@ -71,7 +90,8 @@ func NewInformers(config *rest.Config, options *InformersOpts) *Informers {
 			Unstructured: make(map[schema.GroupVersionKind]*Cache),
 			Metadata:     make(map[schema.GroupVersionKind]*Cache),
 		},
-		codecs:                serializer.NewCodecFactory(options.Scheme),
+		defaultCodecs:         serializer.NewCodecFactory(options.Scheme),
+		codecsByObject:        codecFactories,
 		paramCodec:            runtime.NewParameterCodec(options.Scheme),
 		resync:                options.ResyncPeriod,
 		startWait:             make(chan struct{}),
@@ -139,8 +159,11 @@ type Informers struct {
 	// tracker tracks informers keyed by their type and groupVersionKind
 	tracker tracker
 
-	// codecs is used to create a new REST client
-	codecs serializer.CodecFactory
+	// codecsByObject is used to override defaultCodecs for specific GroupVersionKind(object)
+	codecsByObject map[schema.GroupVersionKind]serializer.CodecFactory
+
+	// defaultCodecs is used to create a new REST client
+	defaultCodecs serializer.CodecFactory
 
 	// paramCodec is used by list and watch
 	paramCodec runtime.ParameterCodec
@@ -512,7 +535,12 @@ func (ip *Informers) makeListWatcher(gvk schema.GroupVersionKind, obj runtime.Ob
 	// Structured.
 	//
 	default:
-		client, err := apiutil.RESTClientForGVK(gvk, false, ip.config, ip.codecs, ip.httpClient)
+		codecFactory := ip.defaultCodecs
+		if override, ok := ip.codecsByObject[gvk]; ok {
+			codecFactory = override
+		}
+
+		client, err := apiutil.RESTClientForGVK(gvk, false, ip.config, codecFactory, ip.httpClient)
 		if err != nil {
 			return nil, err
 		}

pkg/client/client.go

@@ -44,6 +44,9 @@ type Options struct {
 	// Scheme, if provided, will be used to map go structs to GroupVersionKinds
 	Scheme *runtime.Scheme
 
+	// CodecFactoryOptionsByObject, if provided, will be used to indicate whether enable strict/pretty mode of CodecFactory for specific obj
+	CodecFactoryOptionsByObject map[Object]CodecFactoryOptions
+
 	// Mapper, if provided, will be used to map GroupVersionKinds to Resources
 	Mapper meta.RESTMapper
 
@@ -68,6 +71,15 @@ type CacheOptions struct {
 	Unstructured bool
 }
 
+// CodecFactoryOptions holds the options for configuring CodecFactory behavior which is same as serializer.CodecFactoryOptions
+type CodecFactoryOptions struct {
+	// Strict configures all serializers in strict mode
+	Strict bool
+	// Pretty includes a pretty serializer along with the non-pretty one
+	Pretty bool
+	// drop serializers field in serializer.CodecFactoryOptions just for passing go-apidiff test
+}
+
 // NewClientFunc allows a user to define how to create a client.
 type NewClientFunc func(config *rest.Config, options Options) (Client, error)
 
@@ -145,13 +157,29 @@ func newClient(config *rest.Config, options Options) (*client, error) {
 		}
 	}
 
-	resources := &clientRestResources{
-		httpClient: options.HTTPClient,
-		config:     config,
-		scheme:     options.Scheme,
-		mapper:     options.Mapper,
-		codecs:     serializer.NewCodecFactory(options.Scheme),
+	codecFactories := make(map[schema.GroupVersionKind]serializer.CodecFactory)
+	for obj, codecFactoryOptions := range options.CodecFactoryOptionsByObject {
+		gvk, err := apiutil.GVKForObject(obj, options.Scheme)
+		if err != nil {
+			continue
+		}
+		var mutators []serializer.CodecFactoryOptionsMutator
+		if codecFactoryOptions.Strict {
+			mutators = append(mutators, serializer.EnableStrict)
+		}
+		if codecFactoryOptions.Pretty {
+			mutators = append(mutators, serializer.EnablePretty)
+		}
+		codecFactories[gvk] = serializer.NewCodecFactory(options.Scheme, mutators...)
+	}
 
+	resources := &clientRestResources{
+		httpClient:                 options.HTTPClient,
+		config:                     config,
+		scheme:                     options.Scheme,
+		mapper:                     options.Mapper,
+		defaultCodecs:              serializer.NewCodecFactory(options.Scheme),
+		codecsByObject:             codecFactories,
 		structuredResourceByType:   make(map[schema.GroupVersionKind]*resourceMeta),
 		unstructuredResourceByType: make(map[schema.GroupVersionKind]*resourceMeta),
 	}

pkg/client/client_rest_resources.go

@@ -44,8 +44,11 @@ type clientRestResources struct {
 	// mapper maps GroupVersionKinds to Resources
 	mapper meta.RESTMapper
 
-	// codecs are used to create a REST client for a gvk
-	codecs serializer.CodecFactory
+	// codecsByObject is used to override defaultCodecs for specific GroupVersionKind(object)
+	codecsByObject map[schema.GroupVersionKind]serializer.CodecFactory
+
+	// defaultCodecs are used to create a REST client for a gvk
+	defaultCodecs serializer.CodecFactory
 
 	// structuredResourceByType stores structured type metadata
 	structuredResourceByType map[schema.GroupVersionKind]*resourceMeta
@@ -62,7 +65,11 @@ func (c *clientRestResources) newResource(gvk schema.GroupVersionKind, isList, i
 		gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
 	}
 
-	client, err := apiutil.RESTClientForGVK(gvk, isUnstructured, c.config, c.codecs, c.httpClient)
+	codecFactory := c.defaultCodecs
+	if override, ok := c.codecsByObject[gvk]; ok {
+		codecFactory = override
+	}
+	client, err := apiutil.RESTClientForGVK(gvk, isUnstructured, c.config, codecFactory, c.httpClient)
 	if err != nil {
 		return nil, err
 	}