feat(plc4go): better stack rendering

plc4go/spi/testutils/TestUtils.go

@@ -233,7 +233,17 @@ func ProduceTestingLogger(t TestingLog) zerolog.Logger {
 		logger = logger.With().Timestamp().Logger()
 	}
 	stackSetter.Do(func() {
-		zerolog.ErrorStackMarshaler = pkgerrors.MarshalStack
+		zerolog.ErrorStackMarshaler = func(err error) interface{} {
+			var r strings.Builder
+			stack := pkgerrors.MarshalStack(err).([]map[string]string)
+			for _, entry := range stack {
+				stackSourceFileName := entry[pkgerrors.StackSourceFileName]
+				stackSourceLineName := entry[pkgerrors.StackSourceLineName]
+				stackSourceFunctionName := entry[pkgerrors.StackSourceFunctionName]
+				r.WriteString(fmt.Sprintf("\tat %v (%v:%v)\n", stackSourceFunctionName, stackSourceFileName, stackSourceLineName))
+			}
+			return r.String()
+		}
 	})
 	logger = logger.With().Stack().Logger()
 	return logger

plc4go/spi/testutils/TestUtils_test.go

@@ -22,6 +22,7 @@ package testutils
 import (
 	"context"
 	"github.com/apache/plc4x/plc4go/spi/utils"
+	"github.com/pkg/errors"
 	"github.com/rs/zerolog/log"
 	"github.com/stretchr/testify/assert"
 	"testing"
@@ -63,6 +64,20 @@ func (A *ASerializable) String() string {
 	return wbbb.GetBox().String()
 }
 
+func TestProduceTestingLogger_BetterStackrendering(t *testing.T) {
+	got := ProduceTestingLogger(t)
+	f1 := func() error {
+		return errors.New("a error")
+	}
+	f2 := func() error {
+		return errors.Wrap(f1(), "b error")
+	}
+	f3 := func() error {
+		return errors.Wrap(f2(), "c error")
+	}
+	got.Error().Err(f3()).Msg("multiline error")
+}
+
 func TestProduceTestingLogger_ASerializableLog(t *testing.T) {
 	got := ProduceTestingLogger(t)
 	aSerializable := &ASerializable{