Fix CustomTagger docs

docs/content/en/docs/references/yaml/main.js

@@ -193,9 +193,14 @@ function* template(definitions, parentDefinition, ref, ident, parent) {
 
     // This definition is an array
     if (definition.items && definition.items.$ref) {
-      yield html`
-        ${template(definitions, definition, definition.items.$ref, ident + 1, path)}
-      `;
+      // don't infinitely recurse into nested tagger components
+      if (definition.items.$ref === "#/definitions/TaggerComponent") {
+        yield html ``;
+      } else {
+        yield html`
+          ${template(definitions, definition, definition.items.$ref, ident + 1, path)}
+        `;
+      }
     }
   }
 }

docs/content/en/schemas/v2beta6.json

@@ -2117,6 +2117,45 @@
       "description": "specifies which local files to sync to remote folders.",
       "x-intellij-html-description": "specifies which local files to sync to remote folders."
     },
+    "TagPolicy": {
+      "properties": {
+        "customTemplate": {
+          "$ref": "#/definitions/CustomTemplateTagger",
+          "description": "*beta* tags images with a configurable template string *composed of other taggers*.",
+          "x-intellij-html-description": "<em>beta</em> tags images with a configurable template string <em>composed of other taggers</em>."
+        },
+        "dateTime": {
+          "$ref": "#/definitions/DateTimeTagger",
+          "description": "*beta* tags images with the build timestamp.",
+          "x-intellij-html-description": "<em>beta</em> tags images with the build timestamp."
+        },
+        "envTemplate": {
+          "$ref": "#/definitions/EnvTemplateTagger",
+          "description": "*beta* tags images with a configurable template string.",
+          "x-intellij-html-description": "<em>beta</em> tags images with a configurable template string."
+        },
+        "gitCommit": {
+          "$ref": "#/definitions/GitTagger",
+          "description": "*beta* tags images with the git tag or commit of the artifact's workspace.",
+          "x-intellij-html-description": "<em>beta</em> tags images with the git tag or commit of the artifact's workspace."
+        },
+        "sha256": {
+          "$ref": "#/definitions/ShaTagger",
+          "description": "*beta* tags images with their sha256 digest.",
+          "x-intellij-html-description": "<em>beta</em> tags images with their sha256 digest."
+        }
+      },
+      "preferredOrder": [
+        "gitCommit",
+        "sha256",
+        "envTemplate",
+        "dateTime",
+        "customTemplate"
+      ],
+      "additionalProperties": false,
+      "description": "contains all the configuration for the tagging step.",
+      "x-intellij-html-description": "contains all the configuration for the tagging step."
+    },
     "TaggerComponent": {
       "anyOf": [
         {

hack/schemas/main.go

@@ -77,8 +77,9 @@ type Definition struct {
 	Examples             []string               `json:"examples,omitempty"`
 	Enum                 []string               `json:"enum,omitempty"`
 
-	inlines []*Definition
-	tags    string
+	inlines  []*Definition
+	tags     string
+	skipTrim bool
 }
 
 func main() {
@@ -238,7 +239,8 @@ func (g *schemaGenerator) newDefinition(name string, t ast.Expr, comment string,
 			if strings.Contains(field.Tag.Value, "inline") {
 				def.PreferredOrder = append(def.PreferredOrder, "<inline>")
 				def.inlines = append(def.inlines, &Definition{
-					Ref: defPrefix + field.Type.(*ast.Ident).Name,
+					Ref:      defPrefix + field.Type.(*ast.Ident).Name,
+					skipTrim: strings.Contains(field.Tag.Value, "skipTrim"),
 				})
 				continue
 			}
@@ -354,6 +356,9 @@ func (g *schemaGenerator) Apply(inputPath string) ([]byte, error) {
 		}
 
 		for _, inlineStruct := range def.inlines {
+			if inlineStruct.skipTrim {
+				continue
+			}
 			ref := strings.TrimPrefix(inlineStruct.Ref, defPrefix)
 			inlines = append(inlines, ref)
 		}
@@ -435,7 +440,13 @@ func (g *schemaGenerator) Apply(inputPath string) ([]byte, error) {
 	}
 
 	for _, ref := range inlines {
-		delete(definitions, ref)
+		existingDef, ok := definitions[ref]
+		if !ok {
+			continue
+		}
+		if !existingDef.skipTrim {
+			delete(definitions, ref)
+		}
 	}
 
 	schema := Schema{

pkg/skaffold/schema/latest/config.go

@@ -191,7 +191,7 @@ type TaggerComponent struct {
 	Name string `yaml:"name,omitempty"`
 
 	// Component is a tagging strategy to be used in CustomTemplateTagger.
-	Component TagPolicy `yaml:",inline"`
+	Component TagPolicy `yaml:",inline" yamltags:"skipTrim"`
 }
 
 // BuildType contains the specific implementation and parameters needed

pkg/skaffold/yamltags/tags.go

@@ -72,6 +72,10 @@ func processTags(yamltags string, val reflect.Value, parentStruct reflect.Value,
 				Field:  field,
 				Parent: parentStruct,
 			}
+		case "skipTrim":
+			yt = &skipTrimTag{
+				Field: field,
+			}
 		default:
 			logrus.Panicf("unknown yaml tag in %s", yamltags)
 		}
@@ -166,6 +170,24 @@ func (oot *oneOfTag) Process(val reflect.Value) error {
 	return nil
 }
 
+type skipTrimTag struct {
+	Field reflect.StructField
+}
+
+func (tag *skipTrimTag) Load(s []string) error {
+	return nil
+}
+
+func (tag *skipTrimTag) Process(val reflect.Value) error {
+	if isZeroValue(val) {
+		if tags, ok := tag.Field.Tag.Lookup("yaml"); ok {
+			return fmt.Errorf("skipTrim value not set: %s", strings.Split(tags, ",")[0])
+		}
+		return fmt.Errorf("skipTrim value not set: %s", tag.Field.Name)
+	}
+	return nil
+}
+
 func isZeroValue(val reflect.Value) bool {
 	if val.Kind() == reflect.Invalid {
 		return true