add back api

Author: yuwenma

functions/go/set-image/third_party/README.md

@@ -1,3 +1,3 @@
 This package is forked from
 `sigs.k8s.io/kustomize/api/`
-with version `api/0.8.11`.
+with version `api/v0.12.1`.

functions/go/set-image/third_party/sigs.k8s.io/kustomize/api/image/image.go

@@ -14,37 +14,53 @@ func IsImageMatched(s, t string) bool {
 	// Tag values are limited to [a-zA-Z0-9_.{}-].
 	// Some tools like Bazel rules_k8s allow tag patterns with {} characters.
 	// More info: https://github.com/bazelbuild/rules_k8s/pull/423
-	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.{}-]*)?$")
+	pattern, _ := regexp.Compile("^" + t + "(:[a-zA-Z0-9_.{}-]*)?(@sha256:[a-zA-Z0-9_.{}-]*)?$")
 	return pattern.MatchString(s)
 }
 
 // Split separates and returns the name and tag parts
 // from the image string using either colon `:` or at `@` separators.
-// Note that the returned tag keeps its separator.
-func Split(imageName string) (name string, tag string) {
+// image reference pattern: [[host[:port]/]component/]component[:tag][@digest]
+func Split(imageName string) (name string, tag string, digest string) {
 	// check if image name contains a domain
 	// if domain is present, ignore domain and check for `:`
-	ic := -1
-	if slashIndex := strings.Index(imageName, "/"); slashIndex < 0 {
-		ic = strings.LastIndex(imageName, ":")
+	searchName := imageName
+	slashIndex := strings.Index(imageName, "/")
+	if slashIndex > 0 {
+		searchName = imageName[slashIndex:]
 	} else {
-		lastIc := strings.LastIndex(imageName[slashIndex:], ":")
-		// set ic only if `:` is present
-		if lastIc > 0 {
-			ic = slashIndex + lastIc
-		}
+		slashIndex = 0
 	}
-	ia := strings.LastIndex(imageName, "@")
-	if ic < 0 && ia < 0 {
-		return imageName, ""
+
+	id := strings.Index(searchName, "@")
+	ic := strings.Index(searchName, ":")
+
+	// no tag or digest
+	if ic < 0 && id < 0 {
+		return imageName, "", ""
+	}
+
+	// digest only
+	if id >= 0 && (id < ic || ic < 0) {
+		id += slashIndex
+		name = imageName[:id]
+		digest = strings.TrimPrefix(imageName[id:], "@")
+		return name, "", digest
 	}
 
-	i := ic
-	if ia > 0 {
-		i = ia
+	// tag and digest
+	if id >= 0 && ic >= 0 {
+		id += slashIndex
+		ic += slashIndex
+		name = imageName[:ic]
+		tag = strings.TrimPrefix(imageName[ic:id], ":")
+		digest = strings.TrimPrefix(imageName[id:], "@")
+		return name, tag, digest
 	}
 
-	name = imageName[:i]
-	tag = imageName[i:]
-	return
+	// tag only
+	ic += slashIndex
+	name = imageName[:ic]
+	tag = strings.TrimPrefix(imageName[ic:], ":")
+	return name, tag, ""
 }

functions/go/set-image/third_party/sigs.k8s.io/kustomize/api/types/image.go

@@ -12,6 +12,10 @@ type Image struct {
 	// NewName is the value used to replace the original name.
 	NewName string `json:"newName,omitempty" yaml:"newName,omitempty"`
 
+	// TagSuffix is the value used to suffix the original tag
+	// If Digest and NewTag is present an error is thrown
+	TagSuffix string `json:"tagSuffix,omitempty" yaml:"tagSuffix,omitempty"`
+
 	// NewTag is the value used to replace the original tag.
 	NewTag string `json:"newTag,omitempty" yaml:"newTag,omitempty"`
 

functions/go/set-image/transformer/images_transformer.go

@@ -175,7 +175,7 @@ func (t *SetImage) hasPodContainers(o *fn.KubeObject) bool {
 
 // getNewImageName return the new name for image field
 func getNewImageName(oldValue string, newImage Image) string {
-	name, tag := image.Split(oldValue)
+	name, tag, digest := image.Split(oldValue)
 	if newImage.NewName != "" {
 		name = newImage.NewName
 	}
@@ -185,7 +185,13 @@ func getNewImageName(oldValue string, newImage Image) string {
 	if newImage.Digest != "" {
 		tag = "@" + newImage.Digest
 	}
-	newName := name + tag
+	var newName string
+	if tag == "" {
+		newName = name + digest
+	} else {
+		newName = name + tag
+	}
+
 	return newName
 }