Fix V1 Setters and migrate to latest

kyaml/fix/fixsetters/fieldmetav1.go

@@ -0,0 +1,74 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package fixsetters
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/go-openapi/spec"
+	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/fieldmeta"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// FieldMeta contains metadata that may be attached to fields as comments
+type FieldMetaV1 struct {
+	Schema spec.Schema
+
+	Extensions XKustomize
+}
+
+type XKustomize struct {
+	SetBy               string               `yaml:"setBy,omitempty" json:"setBy,omitempty"`
+	PartialFieldSetters []PartialFieldSetter `yaml:"partialSetters,omitempty" json:"partialSetters,omitempty"`
+	FieldSetter         *PartialFieldSetter  `yaml:"setter,omitempty" json:"setter,omitempty"`
+}
+
+// PartialFieldSetter defines how to set part of a field rather than the full field
+// value.  e.g. the tag part of an image field
+type PartialFieldSetter struct {
+	// Name is the name of this setter.
+	Name string `yaml:"name" json:"name"`
+
+	// Value is the current value that has been set.
+	Value string `yaml:"value" json:"value"`
+}
+
+// UpgradeV1SetterComment reads the FieldMeta from a node and upgrade the
+// setters comment to latest
+func (fm *FieldMetaV1) UpgradeV1SetterComment(n *yaml.RNode) error {
+	// check for metadata on head and line comments
+	comments := []string{n.YNode().LineComment, n.YNode().HeadComment}
+	for _, c := range comments {
+		if c == "" {
+			continue
+		}
+		c := strings.TrimLeft(c, "#")
+
+		if err := fm.Schema.UnmarshalJSON([]byte(c)); err != nil {
+			// note: don't return an error if the comment isn't a fieldmeta struct
+			return nil
+		}
+
+		fe := fm.Schema.VendorExtensible.Extensions["x-kustomize"]
+		if fe == nil {
+			return nil
+		}
+		b, err := json.Marshal(fe)
+		if err != nil {
+			return errors.Wrap(err)
+		}
+		// delete line comment after parsing info into fieldmeta
+		n.YNode().HeadComment = ""
+		n.YNode().LineComment = ""
+		err = json.Unmarshal(b, &fm.Extensions)
+		if fm.Extensions.FieldSetter != nil {
+			n.YNode().LineComment = fmt.Sprintf(`{"%s":"%s"}`, fieldmeta.ShortHandRef(), fm.Extensions.FieldSetter.Name)
+		}
+		return err
+	}
+	return nil
+}