Add types and proposal for k8s to kyaml migration.

api/go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/yujunz/go-getter v1.4.1-lite
 	golang.org/x/tools v0.0.0-20191010075000-0337d82405ff
 	gopkg.in/yaml.v2 v2.3.0
+	gopkg.in/yaml.v3 v3.0.0-20200121175148-a6ecf24a6d71
 	k8s.io/api v0.17.0
 	k8s.io/apimachinery v0.17.0
 	k8s.io/client-go v0.17.0

api/internal/merge/merginator.go

@@ -0,0 +1,25 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package merge
+
+import (
+	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/resource"
+)
+
+// Merginator implements resmap.Merginator using kyaml libs.
+type Merginator struct {
+}
+
+var _ resmap.Merginator = (*Merginator)(nil)
+
+func NewMerginator(_ *resource.Factory) *Merginator {
+	return &Merginator{}
+}
+
+// Merge implements resmap.Merginator
+func (m Merginator) Merge(
+	resources []*resource.Resource) (resmap.ResMap, error) {
+	panic("TODO(#Merginator): implement Merge")
+}

api/internal/merge/merginator_test.go

@@ -0,0 +1,4 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package merge_test

api/internal/validate/fieldvalidator.go

@@ -0,0 +1,64 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package validate
+
+import (
+	"sigs.k8s.io/kustomize/api/ifc"
+)
+
+// FieldValidator implements ifc.Validator to check
+// the values of various KRM string fields,
+// e.g. labels, annotations, names, namespaces.
+type FieldValidator struct {
+}
+
+var _ ifc.Validator = (*FieldValidator)(nil)
+
+func NewFieldValidator() *FieldValidator {
+	return &FieldValidator{}
+}
+
+// TODO(#FieldValidator): implement MakeAnnotationValidator
+func (f FieldValidator) MakeAnnotationValidator() func(map[string]string) error {
+	return func(x map[string]string) error {
+		return nil
+	}
+}
+
+// TODO(#FieldValidator): implement MakeAnnotationNameValidator
+func (f FieldValidator) MakeAnnotationNameValidator() func([]string) error {
+	return func(x []string) error {
+		return nil
+	}
+}
+
+// TODO(#FieldValidator): implement MakeLabelValidator
+func (f FieldValidator) MakeLabelValidator() func(map[string]string) error {
+	return func(x map[string]string) error {
+		return nil
+	}
+}
+
+// TODO(#FieldValidator): implement MakeLabelNameValidator
+func (f FieldValidator) MakeLabelNameValidator() func([]string) error {
+	return func(x []string) error {
+		return nil
+	}
+}
+
+// TODO(#FieldValidator): implement ValidateNamespace
+func (f FieldValidator) ValidateNamespace(s string) []string {
+	var errs []string
+	return errs
+}
+
+// TODO(#FieldValidator): implement ErrIfInvalidKey
+func (f FieldValidator) ErrIfInvalidKey(s string) error {
+	return nil
+}
+
+// TODO(#FieldValidator): implement IsEnvVarName
+func (f FieldValidator) IsEnvVarName(k string) error {
+	return nil
+}

api/internal/validate/fieldvalidator_test.go

@@ -0,0 +1,4 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package validate_test

api/internal/wrappy/factory.go

@@ -0,0 +1,41 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package wrappy
+
+import (
+	"sigs.k8s.io/kustomize/api/ifc"
+	"sigs.k8s.io/kustomize/api/types"
+)
+
+// WNodeFactory makes instances of WNode.
+// These instances in turn adapt
+//   sigs.k8s.io/kustomize/kyaml/yaml.RNode
+// to implement ifc.Unstructured.
+// This factory is meant to implement ifc.KunstructuredFactory.
+type WNodeFactory struct {
+}
+
+var _ ifc.KunstructuredFactory = (*WNodeFactory)(nil)
+
+func (k *WNodeFactory) SliceFromBytes(bs []byte) ([]ifc.Kunstructured, error) {
+	panic("TODO(#WNodeFactory): implement SliceFromBytes")
+}
+
+func (k *WNodeFactory) FromMap(m map[string]interface{}) ifc.Kunstructured {
+	panic("TODO(#WNodeFactory): implement FromMap")
+}
+
+func (k *WNodeFactory) Hasher() ifc.KunstructuredHasher {
+	panic("TODO(#WNodeFactory): implement Hasher")
+}
+
+func (k *WNodeFactory) MakeConfigMap(
+	kvLdr ifc.KvLoader, args *types.ConfigMapArgs) (ifc.Kunstructured, error) {
+	panic("TODO(#WNodeFactory): implement MakeConfigMap")
+}
+
+func (k *WNodeFactory) MakeSecret(
+	kvLdr ifc.KvLoader, args *types.SecretArgs) (ifc.Kunstructured, error) {
+	panic("TODO(#WNodeFactory): implement MakeSecret")
+}

api/internal/wrappy/factory_test.go

@@ -0,0 +1,4 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package wrappy_test

api/internal/wrappy/wnode.go

@@ -0,0 +1,143 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package wrappy
+
+import (
+	"log"
+
+	"sigs.k8s.io/kustomize/api/ifc"
+	"sigs.k8s.io/kustomize/api/resid"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// WNode implements ifc.Kunstructured using yaml.RNode.
+//
+// It exists only to help manage a switch from
+// kunstruct.UnstructAdapter to yaml.RNode as the core
+// representation of KRM objects in kustomize.
+//
+// It's got a silly name because we don't want it around for long,
+// and want its use to be obvious.
+type WNode struct {
+	node *yaml.RNode
+}
+
+var _ ifc.Kunstructured = (*WNode)(nil)
+
+func NewWNode() *WNode {
+	return FromRNode(yaml.NewRNode(nil))
+}
+
+func FromRNode(node *yaml.RNode) *WNode {
+	return &WNode{node: node}
+}
+
+func (wn *WNode) demandMetaData(label string) yaml.ResourceMeta {
+	meta, err := wn.node.GetMeta()
+	if err != nil {
+		// Log and die since interface doesn't allow error.
+		log.Fatalf("for %s', expected valid resource: %v", label, err)
+	}
+	return meta
+}
+
+// Copy implements ifc.Kunstructured.
+func (wn *WNode) Copy() ifc.Kunstructured {
+	return &WNode{node: wn.node.Copy()}
+}
+
+// GetAnnotations implements ifc.Kunstructured.
+func (wn *WNode) GetAnnotations() map[string]string {
+	return wn.demandMetaData("GetAnnotations").Annotations
+}
+
+// GetFieldValue implements ifc.Kunstructured.
+func (wn *WNode) GetFieldValue(path string) (interface{}, error) {
+	// The argument is a json path, e.g. "metadata.name"
+	// fields := strings.Split(path, ".")
+	// return wn.node.Pipe(yaml.Lookup(fields...))
+	panic("TODO(#WNode): GetFieldValue; implement or drop from API")
+}
+
+// GetGvk implements ifc.Kunstructured.
+func (wn *WNode) GetGvk() resid.Gvk {
+	meta := wn.demandMetaData("GetGvk")
+	g, v := resid.ParseGroupVersion(meta.APIVersion)
+	return resid.Gvk{Group: g, Version: v, Kind: meta.Kind}
+}
+
+// GetKind implements ifc.Kunstructured.
+func (wn *WNode) GetKind() string {
+	return wn.demandMetaData("GetKind").Kind
+}
+
+// GetLabels implements ifc.Kunstructured.
+func (wn *WNode) GetLabels() map[string]string {
+	return wn.demandMetaData("GetLabels").Labels
+}
+
+// GetName implements ifc.Kunstructured.
+func (wn *WNode) GetName() string {
+	return wn.demandMetaData("GetName").Name
+}
+
+// GetSlice implements ifc.Kunstructured.
+func (wn *WNode) GetSlice(string) ([]interface{}, error) {
+	panic("TODO(#WNode) GetSlice; implement or drop from API")
+}
+
+// GetSlice implements ifc.Kunstructured.
+func (wn *WNode) GetString(string) (string, error) {
+	panic("TODO(#WNode) GetString; implement or drop from API")
+}
+
+// Map implements ifc.Kunstructured.
+func (wn *WNode) Map() map[string]interface{} {
+	panic("TODO(#WNode) Map; implement or drop from API")
+}
+
+// MarshalJSON implements ifc.Kunstructured.
+func (wn *WNode) MarshalJSON() ([]byte, error) {
+	return wn.node.MarshalJSON()
+}
+
+// MatchesAnnotationSelector implements ifc.Kunstructured.
+func (wn *WNode) MatchesAnnotationSelector(string) (bool, error) {
+	panic("TODO(#WNode) MatchesAnnotationSelector; implement or drop from API")
+}
+
+// MatchesLabelSelector implements ifc.Kunstructured.
+func (wn *WNode) MatchesLabelSelector(string) (bool, error) {
+	panic("TODO(#WNode) MatchesLabelSelector; implement or drop from API")
+}
+
+// SetAnnotations implements ifc.Kunstructured.
+func (wn *WNode) SetAnnotations(map[string]string) {
+	panic("TODO(#WNode) SetAnnotations; implement or drop from API")
+}
+
+// SetGvk implements ifc.Kunstructured.
+func (wn *WNode) SetGvk(resid.Gvk) {
+	panic("TODO(#WNode) SetGvk; implement or drop from API")
+}
+
+// SetLabels implements ifc.Kunstructured.
+func (wn *WNode) SetLabels(map[string]string) {
+	panic("TODO(#WNode) SetLabels; implement or drop from API")
+}
+
+// SetName implements ifc.Kunstructured.
+func (wn *WNode) SetName(string) {
+	panic("TODO(#WNode) SetName; implement or drop from API")
+}
+
+// SetNamespace implements ifc.Kunstructured.
+func (wn *WNode) SetNamespace(string) {
+	panic("TODO(#WNode) SetNamespace; implement or drop from API")
+}
+
+// UnmarshalJSON implements ifc.Kunstructured.
+func (wn *WNode) UnmarshalJSON(data []byte) error {
+	return wn.node.UnmarshalJSON(data)
+}