feat(x/tx): add aminoNameAsTypeURL option in aminojson encoder (backport #21712)

x/tx/CHANGELOG.md

@@ -33,6 +33,12 @@ Since v0.13.0, x/tx follows Cosmos SDK semver: https://github.com/cosmos/cosmos-
 
 ## [Unreleased]
 
+## [v0.13.5](https://github.com/cosmos/cosmos-sdk/releases/tag/x/tx/v0.13.5) - 2024-09-18
+
+### Improvements
+
+* [#21712](https://github.com/cosmos/cosmos-sdk/pull/21712) Add `AminoNameAsTypeURL` option to Amino JSON encoder.
+
 ## [v0.13.4](https://github.com/cosmos/cosmos-sdk/releases/tag/x/tx/v0.13.4) - 2024-08-02
 
 ### Improvements

x/tx/signing/aminojson/json_marshal.go

@@ -32,6 +32,10 @@ type EncoderOptions struct {
 	// EnumAsString when set will encode enums as strings instead of integers.
 	// Caution: Enabling this option produce different sign bytes.
 	EnumAsString bool
+	// AminoNameAsTypeURL when set will use the amino name as the type URL in the JSON output.
+	// It is useful when using the Amino JSON encoder for non Amino purposes,
+	// such as JSON RPC.
+	AminoNameAsTypeURL bool
 	// TypeResolver is used to resolve protobuf message types by TypeURL when marshaling any packed messages.
 	TypeResolver signing.TypeResolver
 	// FileResolver is used to resolve protobuf file descriptors TypeURL when TypeResolver fails.
@@ -50,6 +54,7 @@ type Encoder struct {
 	doNotSortFields           bool
 	indent                    string
 	enumsAsString             bool
+	aminoNameAsTypeURL        bool
 }
 
 // NewEncoder returns a new Encoder capable of serializing protobuf messages to JSON using the Amino JSON encoding
@@ -80,11 +85,12 @@ func NewEncoder(options EncoderOptions) Encoder {
 			"google.protobuf.Duration":  marshalDuration,
 			"google.protobuf.Any":       marshalAny,
 		},
-		fileResolver:    options.FileResolver,
-		typeResolver:    options.TypeResolver,
-		doNotSortFields: options.DoNotSortFields,
-		indent:          options.Indent,
-		enumsAsString:   options.EnumAsString,
+		fileResolver:       options.FileResolver,
+		typeResolver:       options.TypeResolver,
+		doNotSortFields:    options.DoNotSortFields,
+		indent:             options.Indent,
+		enumsAsString:      options.EnumAsString,
+		aminoNameAsTypeURL: options.AminoNameAsTypeURL,
 	}
 	return enc
 }
@@ -187,9 +193,17 @@ func (enc Encoder) beginMarshal(msg protoreflect.Message, writer io.Writer, isAn
 	)
 
 	if isAny {
-		name, named = getMessageAminoNameAny(msg), true
+		if enc.aminoNameAsTypeURL {
+			name, named = getMessageTypeURL(msg), true
+		} else {
+			name, named = getMessageAminoNameAny(msg), true
+		}
 	} else {
 		name, named = getMessageAminoName(msg)
+		if enc.aminoNameAsTypeURL {
+			// do not override named
+			name = getMessageTypeURL(msg)
+		}
 	}
 
 	if named {

x/tx/signing/aminojson/json_marshal_test.go

@@ -355,3 +355,62 @@ func TestEnumAsString(t *testing.T) {
 	}
 }`, string(bz))
 }
+
+func TestAminoNameAsTypeURL(t *testing.T) {
+	encoder := aminojson.NewEncoder(aminojson.EncoderOptions{Indent: "	", AminoNameAsTypeURL: true})
+
+	msg := &testpb.ABitOfEverything{
+		Message: &testpb.NestedMessage{
+			Foo: "test",
+			Bar: 0, // this is the default value and should be omitted from output
+		},
+		Enum:     testpb.AnEnum_ONE,
+		Repeated: []int32{3, -7, 2, 6, 4},
+		Str:      `abcxyz"foo"def`,
+		Bool:     true,
+		Bytes:    []byte{0, 1, 2, 3},
+		I32:      -15,
+		F32:      1001,
+		U32:      1200,
+		Si32:     -376,
+		Sf32:     -1000,
+		I64:      14578294827584932,
+		F64:      9572348124213523654,
+		U64:      4759492485,
+		Si64:     -59268425823934,
+		Sf64:     -659101379604211154,
+	}
+
+	bz, err := encoder.Marshal(msg)
+	require.NoError(t, err)
+	fmt.Println(string(bz))
+	require.Equal(t, `{
+	"type": "/testpb.ABitOfEverything",
+	"value": {
+		"bool": true,
+		"bytes": "AAECAw==",
+		"enum": 1,
+		"f32": 1001,
+		"f64": "9572348124213523654",
+		"i32": -15,
+		"i64": "14578294827584932",
+		"message": {
+			"foo": "test"
+		},
+		"repeated": [
+			3,
+			-7,
+			2,
+			6,
+			4
+		],
+		"sf32": -1000,
+		"sf64": "-659101379604211154",
+		"si32": -376,
+		"si64": "-59268425823934",
+		"str": "abcxyz\"foo\"def",
+		"u32": 1200,
+		"u64": "4759492485"
+	}
+}`, string(bz))
+}

x/tx/signing/aminojson/options.go

@@ -25,14 +25,18 @@ func getMessageAminoName(msg protoreflect.Message) (string, bool) {
 
 // getMessageAminoName returns the amino name of a message if it has been set by the `amino.name` option.
 // If the message does not have an amino name, then it returns the msg url.
-// If it cannot get the msg url, then it returns false.
 func getMessageAminoNameAny(msg protoreflect.Message) string {
 	messageOptions := msg.Descriptor().Options()
 	if proto.HasExtension(messageOptions, amino.E_Name) {
 		name := proto.GetExtension(messageOptions, amino.E_Name)
 		return name.(string)
 	}
 
+	return getMessageTypeURL(msg)
+}
+
+// getMessageTypeURL returns the msg url.
+func getMessageTypeURL(msg protoreflect.Message) string {
 	msgURL := "/" + string(msg.Descriptor().FullName())
 	if msgURL != "/" {
 		return msgURL