feat(x/tx): support bytes field as signer (cosmos#21850)

Author: yihuang

x/tx/CHANGELOG.md

@@ -33,6 +33,10 @@ Since v0.13.0, x/tx follows Cosmos SDK semver: https://github.com/cosmos/cosmos-
 
 ## [Unreleased]
 
+### Improvements
+
+* [#21850](https://github.com/cosmos/cosmos-sdk/pull/21850) Support bytes field as signer.
+
 ## [v0.13.5](https://github.com/cosmos/cosmos-sdk/releases/tag/x/tx/v0.13.5) - 2024-09-18
 
 ### Improvements

x/tx/internal/testpb/signers.proto

@@ -92,7 +92,7 @@ message DeeplyNestedRepeatedSigner {
 
 message BadSigner {
   option (cosmos.msg.v1.signer) = "signer";
-  bytes signer                  = 1;
+  int32 signer                  = 1;
 }
 
 message NoSignerOption {
@@ -107,4 +107,4 @@ message ValidatorSigner {
 service TestSimpleSigner {
   option (cosmos.msg.v1.service) = true;
   rpc TestSimpleSigner(SimpleSigner) returns (SimpleSigner) {}
-}
+}

x/tx/internal/testpb/signers.pulsar.go

@@ -301,6 +301,11 @@ func (c *Context) makeGetSignersFunc(descriptor protoreflect.MessageDescriptor)
 				}
 				return arr, nil
 			}
+		case protoreflect.BytesKind:
+			fieldGetters[i] = func(msg proto.Message, arr [][]byte) ([][]byte, error) {
+				addrBz := msg.ProtoReflect().Get(field).Bytes()
+				return append(arr, addrBz), nil
+			}
 		default:
 			return nil, fmt.Errorf("unexpected field type %s for field %s in message %s", field.Kind(), fieldName, descriptor.FullName())
 		}