[R4R]return error when executing mirror or mirror sync request failed

plugins/bridge/cross_app.go

@@ -524,6 +524,7 @@ func (app *MirrorApp) ExecuteSynPackage(ctx sdk.Context, payload []byte, relayer
 		return sdk.ExecuteResult{
 			Payload: ackPackage,
 			Tags:    tags,
+			Err:     types.ErrInvalidMirror("invalid mirror package"),
 		}
 	}
 
@@ -540,6 +541,7 @@ func (app *MirrorApp) ExecuteSynPackage(ctx sdk.Context, payload []byte, relayer
 		return sdk.ExecuteResult{
 			Payload: ackPackage,
 			Tags:    tags,
+			Err:     types.ErrMirrorSymbolExists(fmt.Sprintf("symbol %s already exists", symbol)),
 		}
 	}
 
@@ -700,6 +702,7 @@ func (app *MirrorSyncApp) ExecuteSynPackage(ctx sdk.Context, payload []byte, rel
 		return sdk.ExecuteResult{
 			Payload: ackPackage,
 			Tags:    tags,
+			Err:     types.ErrInvalidMirrorSync("invalid mirror sync package"),
 		}
 	}
 
@@ -720,6 +723,7 @@ func (app *MirrorSyncApp) ExecuteSynPackage(ctx sdk.Context, payload []byte, rel
 		return sdk.ExecuteResult{
 			Tags:    tags,
 			Payload: ackPackage,
+			Err:     types.ErrNotBoundByMirror(fmt.Sprintf("token %s is not bound by mirror", token.GetSymbol())),
 		}
 	}
 
@@ -737,8 +741,10 @@ func (app *MirrorSyncApp) ExecuteSynPackage(ctx sdk.Context, payload []byte, rel
 		return sdk.ExecuteResult{
 			Tags:    tags,
 			Payload: ackPackage,
+			Err:     types.ErrMirrorSyncInvalidSupply(fmt.Sprintf("mirror sync supply %d is invalid", newSupply)),
 		}
 	}
+
 	oldSupply := token.GetTotalSupply().ToInt64()
 	if newSupply > oldSupply {
 		if _, _, sdkError := app.bridgeKeeper.BankKeeper.AddCoins(ctx, token.GetOwner(),

plugins/bridge/types/errors.go

@@ -24,6 +24,11 @@ const (
 	CodeTokenBindRelationChanged sdk.CodeType = 15
 	CodeTransferInExpire         sdk.CodeType = 16
 	CodeScriptsExecutionError    sdk.CodeType = 17
+	CodeInvalidMirror            sdk.CodeType = 18
+	CodeMirrorSymbolExists       sdk.CodeType = 19
+	CodeInvalidMirrorSync        sdk.CodeType = 20
+	CodeNotBoundByMirror         sdk.CodeType = 21
+	CodeMirrorSyncInvalidSupply  sdk.CodeType = 22
 )
 
 //----------------------------------------
@@ -96,3 +101,23 @@ func ErrTransferInExpire(msg string) sdk.Error {
 func ErrScriptsExecutionError(msg string) sdk.Error {
 	return sdk.NewError(DefaultCodespace, CodeScriptsExecutionError, msg)
 }
+
+func ErrInvalidMirror(msg string) sdk.Error {
+	return sdk.NewError(DefaultCodespace, CodeInvalidMirror, msg)
+}
+
+func ErrMirrorSymbolExists(msg string) sdk.Error {
+	return sdk.NewError(DefaultCodespace, CodeMirrorSymbolExists, msg)
+}
+
+func ErrInvalidMirrorSync(msg string) sdk.Error {
+	return sdk.NewError(DefaultCodespace, CodeInvalidMirrorSync, msg)
+}
+
+func ErrNotBoundByMirror(msg string) sdk.Error {
+	return sdk.NewError(DefaultCodespace, CodeNotBoundByMirror, msg)
+}
+
+func ErrMirrorSyncInvalidSupply(msg string) sdk.Error {
+	return sdk.NewError(DefaultCodespace, CodeMirrorSyncInvalidSupply, msg)
+}