Let media type validator start with validator

Signed-off-by: Lei Jitang <leijitang@huawei.com>

schema/config_test.go

@@ -211,7 +211,7 @@ func TestConfig(t *testing.T) {
 		},
 	} {
 		r := strings.NewReader(tt.config)
-		err := schema.MediaTypeImageConfig.Validate(r)
+		err := schema.ValidatorMediaTypeImageConfig.Validate(r)
 
 		if got := err != nil; tt.fail != got {
 			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)

schema/manifest_backwards_compatibility_test.go

@@ -118,7 +118,7 @@ func TestBackwardsCompatibilityManifestList(t *testing.T) {
 
 		manifest := convertFormats(tt.manifest)
 		r := strings.NewReader(manifest)
-		err := schema.MediaTypeManifestList.Validate(r)
+		err := schema.ValidatorMediaTypeManifestList.Validate(r)
 
 		if got := err != nil; tt.fail != got {
 			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
@@ -181,7 +181,7 @@ func TestBackwardsCompatibilityManifest(t *testing.T) {
 
 		manifest := convertFormats(tt.manifest)
 		r := strings.NewReader(manifest)
-		err := schema.MediaTypeManifest.Validate(r)
+		err := schema.ValidatorMediaTypeManifest.Validate(r)
 
 		if got := err != nil; tt.fail != got {
 			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
@@ -221,7 +221,7 @@ func TestBackwardsCompatibilityConfig(t *testing.T) {
 
 		config := convertFormats(tt.config)
 		r := strings.NewReader(config)
-		err := schema.MediaTypeImageConfig.Validate(r)
+		err := schema.ValidatorMediaTypeImageConfig.Validate(r)
 
 		if got := err != nil; tt.fail != got {
 			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)

schema/manifest_test.go

@@ -183,7 +183,7 @@ func TestManifest(t *testing.T) {
 		},
 	} {
 		r := strings.NewReader(tt.manifest)
-		err := schema.MediaTypeManifest.Validate(r)
+		err := schema.ValidatorMediaTypeManifest.Validate(r)
 
 		if got := err != nil; tt.fail != got {
 			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)

schema/schema.go

@@ -22,12 +22,12 @@ import (
 
 // Media types for the OCI image formats
 const (
-	MediaTypeDescriptor   Validator     = v1.MediaTypeDescriptor
-	MediaTypeManifest     Validator     = v1.MediaTypeImageManifest
-	MediaTypeManifestList Validator     = v1.MediaTypeImageManifestList
-	MediaTypeImageConfig  Validator     = v1.MediaTypeImageConfig
-	TypeImageLayout       Validator     = v1.ImageLayoutFile
-	MediaTypeImageLayer   unimplemented = v1.MediaTypeImageLayer
+	ValidatorMediaTypeDescriptor   Validator     = v1.MediaTypeDescriptor
+	ValidatorMediaTypeManifest     Validator     = v1.MediaTypeImageManifest
+	ValidatorMediaTypeManifestList Validator     = v1.MediaTypeImageManifestList
+	ValidatorMediaTypeImageConfig  Validator     = v1.MediaTypeImageConfig
+	ValidatorTypeImageLayout       Validator     = v1.ImageLayoutFile
+	ValidatorMediaTypeImageLayer   unimplemented = v1.MediaTypeImageLayer
 )
 
 var (
@@ -37,11 +37,11 @@ var (
 
 	// specs maps OCI schema media types to schema files.
 	specs = map[Validator]string{
-		MediaTypeDescriptor:   "content-descriptor.json",
-		MediaTypeManifest:     "image-manifest-schema.json",
-		MediaTypeManifestList: "manifest-list-schema.json",
-		MediaTypeImageConfig:  "config-schema.json",
-		TypeImageLayout:       "image-layout-schema.json",
+		ValidatorMediaTypeDescriptor:   "content-descriptor.json",
+		ValidatorMediaTypeManifest:     "image-manifest-schema.json",
+		ValidatorMediaTypeManifestList: "manifest-list-schema.json",
+		ValidatorMediaTypeImageConfig:  "config-schema.json",
+		ValidatorTypeImageLayout:       "image-layout-schema.json",
 	}
 )
 

schema/validator.go

@@ -33,7 +33,7 @@ type Validator string
 type validateDescendantsFunc func(r io.Reader) error
 
 var mapValidateDescendants = map[Validator]validateDescendantsFunc{
-	MediaTypeManifest: validateManifestDescendants,
+	ValidatorMediaTypeManifest: validateManifestDescendants,
 }
 
 // ValidationError contains all the errors that happened during validation.