update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/sigs.k8s.io/kustomize/api/resource/resource.go

@@ -0,0 +1,587 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package resource
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"reflect"
+	"strings"
+
+	"sigs.k8s.io/kustomize/api/filters/patchstrategicmerge"
+	"sigs.k8s.io/kustomize/api/ifc"
+	"sigs.k8s.io/kustomize/api/konfig"
+	"sigs.k8s.io/kustomize/api/resid"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	kyaml "sigs.k8s.io/kustomize/kyaml/yaml"
+	"sigs.k8s.io/yaml"
+)
+
+// Resource is an RNode, representing a Kubernetes Resource Model object,
+// paired with metadata used by kustomize.
+type Resource struct {
+	// TODO: Inline RNode, dropping complexity. Resource is just a decorator.
+	node        *kyaml.RNode
+	options     *types.GenArgs
+	refBy       []resid.ResId
+	refVarNames []string
+}
+
+const (
+	buildAnnotationPreviousKinds      = konfig.ConfigAnnoDomain + "/previousKinds"
+	buildAnnotationPreviousNames      = konfig.ConfigAnnoDomain + "/previousNames"
+	buildAnnotationPrefixes           = konfig.ConfigAnnoDomain + "/prefixes"
+	buildAnnotationSuffixes           = konfig.ConfigAnnoDomain + "/suffixes"
+	buildAnnotationPreviousNamespaces = konfig.ConfigAnnoDomain + "/previousNamespaces"
+
+	// the following are only for patches, to specify whether they can change names
+	// and kinds of their targets
+	buildAnnotationAllowNameChange = konfig.ConfigAnnoDomain + "/allowNameChange"
+	buildAnnotationAllowKindChange = konfig.ConfigAnnoDomain + "/allowKindChange"
+)
+
+var buildAnnotations = []string{
+	buildAnnotationPreviousKinds,
+	buildAnnotationPreviousNames,
+	buildAnnotationPrefixes,
+	buildAnnotationSuffixes,
+	buildAnnotationPreviousNamespaces,
+	buildAnnotationAllowNameChange,
+	buildAnnotationAllowKindChange,
+}
+
+func (r *Resource) AsRNode() *kyaml.RNode {
+	return r.node.Copy()
+}
+
+func (r *Resource) ResetPrimaryData(incoming *Resource) {
+	r.node = incoming.node.Copy()
+}
+
+func (r *Resource) GetAnnotations() map[string]string {
+	annotations, err := r.node.GetAnnotations()
+	if err != nil || annotations == nil {
+		return make(map[string]string)
+	}
+	return annotations
+}
+
+func (r *Resource) GetFieldValue(f string) (interface{}, error) {
+	//nolint:staticcheck
+	return r.node.GetFieldValue(f)
+}
+
+func (r *Resource) GetDataMap() map[string]string {
+	return r.node.GetDataMap()
+}
+
+func (r *Resource) GetBinaryDataMap() map[string]string {
+	return r.node.GetBinaryDataMap()
+}
+
+func (r *Resource) GetGvk() resid.Gvk {
+	meta, err := r.node.GetMeta()
+	if err != nil {
+		return resid.GvkFromString("")
+	}
+	g, v := resid.ParseGroupVersion(meta.APIVersion)
+	return resid.Gvk{Group: g, Version: v, Kind: meta.Kind}
+}
+
+func (r *Resource) Hash(h ifc.KustHasher) (string, error) {
+	return h.Hash(r.node)
+}
+
+func (r *Resource) GetKind() string {
+	return r.node.GetKind()
+}
+
+func (r *Resource) GetLabels() map[string]string {
+	l, err := r.node.GetLabels()
+	if err != nil {
+		return map[string]string{}
+	}
+	return l
+}
+
+func (r *Resource) GetName() string {
+	return r.node.GetName()
+}
+
+func (r *Resource) GetSlice(p string) ([]interface{}, error) {
+	//nolint:staticcheck
+	return r.node.GetSlice(p)
+}
+
+func (r *Resource) GetString(p string) (string, error) {
+	//nolint:staticcheck
+	return r.node.GetString(p)
+}
+
+func (r *Resource) IsEmpty() bool {
+	return r.node.IsNilOrEmpty()
+}
+
+func (r *Resource) Map() (map[string]interface{}, error) {
+	return r.node.Map()
+}
+
+func (r *Resource) MarshalJSON() ([]byte, error) {
+	return r.node.MarshalJSON()
+}
+
+func (r *Resource) MatchesLabelSelector(selector string) (bool, error) {
+	return r.node.MatchesLabelSelector(selector)
+}
+
+func (r *Resource) MatchesAnnotationSelector(selector string) (bool, error) {
+	return r.node.MatchesAnnotationSelector(selector)
+}
+
+func (r *Resource) SetAnnotations(m map[string]string) {
+	if len(m) == 0 {
+		// Force field erasure.
+		r.node.SetAnnotations(nil)
+		return
+	}
+	r.node.SetAnnotations(m)
+}
+
+func (r *Resource) SetDataMap(m map[string]string) {
+	r.node.SetDataMap(m)
+}
+
+func (r *Resource) SetBinaryDataMap(m map[string]string) {
+	r.node.SetBinaryDataMap(m)
+}
+
+func (r *Resource) SetGvk(gvk resid.Gvk) {
+	r.node.SetMapField(
+		kyaml.NewScalarRNode(gvk.Kind), kyaml.KindField)
+	r.node.SetMapField(
+		kyaml.NewScalarRNode(gvk.ApiVersion()), kyaml.APIVersionField)
+}
+
+func (r *Resource) SetLabels(m map[string]string) {
+	if len(m) == 0 {
+		// Force field erasure.
+		r.node.SetLabels(nil)
+		return
+	}
+	r.node.SetLabels(m)
+}
+
+func (r *Resource) SetName(n string) {
+	r.node.SetName(n)
+}
+
+func (r *Resource) SetNamespace(n string) {
+	r.node.SetNamespace(n)
+}
+
+func (r *Resource) SetKind(k string) {
+	gvk := r.GetGvk()
+	gvk.Kind = k
+	r.SetGvk(gvk)
+}
+
+func (r *Resource) UnmarshalJSON(s []byte) error {
+	return r.node.UnmarshalJSON(s)
+}
+
+// ResCtx is an interface describing the contextual added
+// kept kustomize in the context of each Resource object.
+// Currently mainly the name prefix and name suffix are added.
+type ResCtx interface {
+	AddNamePrefix(p string)
+	AddNameSuffix(s string)
+	GetNamePrefixes() []string
+	GetNameSuffixes() []string
+}
+
+// ResCtxMatcher returns true if two Resources are being
+// modified in the same kustomize context.
+type ResCtxMatcher func(ResCtx) bool
+
+// DeepCopy returns a new copy of resource
+func (r *Resource) DeepCopy() *Resource {
+	rc := &Resource{
+		node: r.node.Copy(),
+	}
+	rc.copyOtherFields(r)
+	return rc
+}
+
+// CopyMergeMetaDataFields copies everything but the non-metadata in
+// the resource.
+func (r *Resource) CopyMergeMetaDataFieldsFrom(other *Resource) {
+	r.SetLabels(mergeStringMaps(other.GetLabels(), r.GetLabels()))
+	r.SetAnnotations(
+		mergeStringMaps(other.GetAnnotations(), r.GetAnnotations()))
+	r.SetName(other.GetName())
+	r.SetNamespace(other.GetNamespace())
+	r.copyOtherFields(other)
+}
+
+func (r *Resource) copyOtherFields(other *Resource) {
+	r.options = other.options
+	r.refBy = other.copyRefBy()
+	r.refVarNames = copyStringSlice(other.refVarNames)
+}
+
+func (r *Resource) MergeDataMapFrom(o *Resource) {
+	r.SetDataMap(mergeStringMaps(o.GetDataMap(), r.GetDataMap()))
+}
+
+func (r *Resource) MergeBinaryDataMapFrom(o *Resource) {
+	r.SetBinaryDataMap(mergeStringMaps(o.GetBinaryDataMap(), r.GetBinaryDataMap()))
+}
+
+func (r *Resource) ErrIfNotEquals(o *Resource) error {
+	meYaml, err := r.AsYAML()
+	if err != nil {
+		return err
+	}
+	otherYaml, err := o.AsYAML()
+	if err != nil {
+		return err
+	}
+	if !r.ReferencesEqual(o) {
+		return fmt.Errorf(
+			`unequal references - self:
+%sreferenced by: %s
+--- other:
+%sreferenced by: %s
+`, meYaml, r.GetRefBy(), otherYaml, o.GetRefBy())
+	}
+	if string(meYaml) != string(otherYaml) {
+		return fmt.Errorf(`---  self:
+%s
+--- other:
+%s
+`, meYaml, otherYaml)
+	}
+	return nil
+}
+
+func (r *Resource) ReferencesEqual(other *Resource) bool {
+	setSelf := make(map[resid.ResId]bool)
+	setOther := make(map[resid.ResId]bool)
+	for _, ref := range other.refBy {
+		setOther[ref] = true
+	}
+	for _, ref := range r.refBy {
+		if _, ok := setOther[ref]; !ok {
+			return false
+		}
+		setSelf[ref] = true
+	}
+	return len(setSelf) == len(setOther)
+}
+
+// NodeEqual returns true if the resource's nodes are
+// equal, ignoring ancillary information like genargs, refby, etc.
+func (r *Resource) NodeEqual(o *Resource) bool {
+	return reflect.DeepEqual(r.node, o.node)
+}
+
+func (r *Resource) copyRefBy() []resid.ResId {
+	if r.refBy == nil {
+		return nil
+	}
+	s := make([]resid.ResId, len(r.refBy))
+	copy(s, r.refBy)
+	return s
+}
+
+func copyStringSlice(s []string) []string {
+	if s == nil {
+		return nil
+	}
+	c := make([]string, len(s))
+	copy(c, s)
+	return c
+}
+
+// Implements ResCtx AddNamePrefix
+func (r *Resource) AddNamePrefix(p string) {
+	r.appendCsvAnnotation(buildAnnotationPrefixes, p)
+}
+
+// Implements ResCtx AddNameSuffix
+func (r *Resource) AddNameSuffix(s string) {
+	r.appendCsvAnnotation(buildAnnotationSuffixes, s)
+}
+
+func (r *Resource) appendCsvAnnotation(name, value string) {
+	if value == "" {
+		return
+	}
+	annotations := r.GetAnnotations()
+	if existing, ok := annotations[name]; ok {
+		annotations[name] = existing + "," + value
+	} else {
+		annotations[name] = value
+	}
+	r.SetAnnotations(annotations)
+}
+
+func SameEndingSubarray(shortest, longest []string) bool {
+	if len(shortest) > len(longest) {
+		longest, shortest = shortest, longest
+	}
+	diff := len(longest) - len(shortest)
+	if len(shortest) == 0 {
+		return diff == 0
+	}
+	for i := len(shortest) - 1; i >= 0; i-- {
+		if longest[i+diff] != shortest[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// Implements ResCtx GetNamePrefixes
+func (r *Resource) GetNamePrefixes() []string {
+	return r.getCsvAnnotation(buildAnnotationPrefixes)
+}
+
+// Implements ResCtx GetNameSuffixes
+func (r *Resource) GetNameSuffixes() []string {
+	return r.getCsvAnnotation(buildAnnotationSuffixes)
+}
+
+func (r *Resource) getCsvAnnotation(name string) []string {
+	annotations := r.GetAnnotations()
+	if _, ok := annotations[name]; !ok {
+		return nil
+	}
+	return strings.Split(annotations[name], ",")
+}
+
+// PrefixesSuffixesEquals is conceptually doing the same task
+// as OutermostPrefixSuffix but performs a deeper comparison
+// of the suffix and prefix slices.
+func (r *Resource) PrefixesSuffixesEquals(o ResCtx) bool {
+	return SameEndingSubarray(r.GetNamePrefixes(), o.GetNamePrefixes()) && SameEndingSubarray(r.GetNameSuffixes(), o.GetNameSuffixes())
+}
+
+// RemoveBuildAnnotations removes annotations created by the build process.
+// These are internal-only to kustomize, added to the data pipeline to
+// track name changes so name references can be fixed.
+func (r *Resource) RemoveBuildAnnotations() {
+	annotations := r.GetAnnotations()
+	if len(annotations) == 0 {
+		return
+	}
+	for _, a := range buildAnnotations {
+		delete(annotations, a)
+	}
+	r.SetAnnotations(annotations)
+}
+
+func (r *Resource) setPreviousId(ns string, n string, k string) *Resource {
+	r.appendCsvAnnotation(buildAnnotationPreviousNames, n)
+	r.appendCsvAnnotation(buildAnnotationPreviousNamespaces, ns)
+	r.appendCsvAnnotation(buildAnnotationPreviousKinds, k)
+	return r
+}
+
+func (r *Resource) SetAllowNameChange(value string) {
+	annotations := r.GetAnnotations()
+	annotations[buildAnnotationAllowNameChange] = value
+	r.SetAnnotations(annotations)
+}
+
+func (r *Resource) NameChangeAllowed() bool {
+	annotations := r.GetAnnotations()
+	if allowed, set := annotations[buildAnnotationAllowNameChange]; set && allowed == "true" {
+		return true
+	}
+	return false
+}
+
+func (r *Resource) SetAllowKindChange(value string) {
+	annotations := r.GetAnnotations()
+	annotations[buildAnnotationAllowKindChange] = value
+	r.SetAnnotations(annotations)
+}
+
+func (r *Resource) KindChangeAllowed() bool {
+	annotations := r.GetAnnotations()
+	if allowed, set := annotations[buildAnnotationAllowKindChange]; set && allowed == "true" {
+		return true
+	}
+	return false
+}
+
+// String returns resource as JSON.
+func (r *Resource) String() string {
+	bs, err := r.MarshalJSON()
+	if err != nil {
+		return "<" + err.Error() + ">"
+	}
+	return strings.TrimSpace(string(bs)) + r.options.String()
+}
+
+// AsYAML returns the resource in Yaml form.
+// Easier to read than JSON.
+func (r *Resource) AsYAML() ([]byte, error) {
+	json, err := r.MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+	return yaml.JSONToYAML(json)
+}
+
+// MustYaml returns YAML or panics.
+func (r *Resource) MustYaml() string {
+	yml, err := r.AsYAML()
+	if err != nil {
+		log.Fatal(err)
+	}
+	return string(yml)
+}
+
+// SetOptions updates the generator options for the resource.
+func (r *Resource) SetOptions(o *types.GenArgs) {
+	r.options = o
+}
+
+// Behavior returns the behavior for the resource.
+func (r *Resource) Behavior() types.GenerationBehavior {
+	return r.options.Behavior()
+}
+
+// NeedHashSuffix returns true if a resource content
+// hash should be appended to the name of the resource.
+func (r *Resource) NeedHashSuffix() bool {
+	return r.options != nil && r.options.ShouldAddHashSuffixToName()
+}
+
+// GetNamespace returns the namespace the resource thinks it's in.
+func (r *Resource) GetNamespace() string {
+	namespace, _ := r.GetString("metadata.namespace")
+	// if err, namespace is empty, so no need to check.
+	return namespace
+}
+
+// OrgId returns the original, immutable ResId for the resource.
+// This doesn't have to be unique in a ResMap.
+func (r *Resource) OrgId() resid.ResId {
+	ids := r.PrevIds()
+	if len(ids) > 0 {
+		return ids[0]
+	}
+	return r.CurId()
+}
+
+// PrevIds returns a list of ResIds that includes every
+// previous ResId the resource has had through all of its
+// GVKN transformations, in the order that it had that ID.
+// I.e. the oldest ID is first.
+// The returned array does not include the resource's current
+// ID. If there are no previous IDs, this will return nil.
+func (r *Resource) PrevIds() []resid.ResId {
+	var ids []resid.ResId
+	// TODO: merge previous names and namespaces into one list of
+	//     pairs on one annotation so there is no chance of error
+	names := r.getCsvAnnotation(buildAnnotationPreviousNames)
+	ns := r.getCsvAnnotation(buildAnnotationPreviousNamespaces)
+	kinds := r.getCsvAnnotation(buildAnnotationPreviousKinds)
+	if len(names) != len(ns) || len(names) != len(kinds) {
+		panic(errors.New(
+			"number of previous names, " +
+				"number of previous namespaces, " +
+				"number of previous kinds not equal"))
+	}
+	for i := range names {
+		k := kinds[i]
+		gvk := r.GetGvk()
+		gvk.Kind = k
+		ids = append(ids, resid.NewResIdWithNamespace(
+			gvk, names[i], ns[i]))
+	}
+	return ids
+}
+
+// StorePreviousId stores the resource's current ID via build annotations.
+func (r *Resource) StorePreviousId() {
+	id := r.CurId()
+	r.setPreviousId(id.EffectiveNamespace(), id.Name, id.Kind)
+}
+
+// CurId returns a ResId for the resource using the
+// mutable parts of the resource.
+// This should be unique in any ResMap.
+func (r *Resource) CurId() resid.ResId {
+	return resid.NewResIdWithNamespace(
+		r.GetGvk(), r.GetName(), r.GetNamespace())
+}
+
+// GetRefBy returns the ResIds that referred to current resource
+func (r *Resource) GetRefBy() []resid.ResId {
+	return r.refBy
+}
+
+// AppendRefBy appends a ResId into the refBy list
+func (r *Resource) AppendRefBy(id resid.ResId) {
+	r.refBy = append(r.refBy, id)
+}
+
+// GetRefVarNames returns vars that refer to current resource
+func (r *Resource) GetRefVarNames() []string {
+	return r.refVarNames
+}
+
+// AppendRefVarName appends a name of a var into the refVar list
+func (r *Resource) AppendRefVarName(variable types.Var) {
+	r.refVarNames = append(r.refVarNames, variable.Name)
+}
+
+// ApplySmPatch applies the provided strategic merge patch.
+func (r *Resource) ApplySmPatch(patch *Resource) error {
+	n, ns, k := r.GetName(), r.GetNamespace(), r.GetKind()
+	if patch.NameChangeAllowed() || patch.KindChangeAllowed() {
+		r.StorePreviousId()
+	}
+	if err := r.ApplyFilter(patchstrategicmerge.Filter{
+		Patch: patch.node,
+	}); err != nil {
+		return err
+	}
+	if r.IsEmpty() {
+		return nil
+	}
+	if !patch.KindChangeAllowed() {
+		r.SetKind(k)
+	}
+	if !patch.NameChangeAllowed() {
+		r.SetName(n)
+	}
+	r.SetNamespace(ns)
+	return nil
+}
+
+func (r *Resource) ApplyFilter(f kio.Filter) error {
+	l, err := f.Filter([]*kyaml.RNode{r.node})
+	if len(l) == 0 {
+		// The node was deleted.  The following makes r.IsEmpty() true.
+		r.node = nil
+	}
+	return err
+}
+
+func mergeStringMaps(maps ...map[string]string) map[string]string {
+	result := map[string]string{}
+	for _, m := range maps {
+		for key, value := range m {
+			result[key] = value
+		}
+	}
+	return result
+}