small fixups

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

logger/slog/slog.go

@@ -16,8 +16,9 @@ import (
 
 const (
 	badKey = "!BADKEY"
+	// defaultCallerSkipCount used by logger
+	defaultCallerSkipCount = 3
 )
-const emptyMSg = "!EMPTYMSG"
 
 var reTrace = regexp.MustCompile(`.*/slog/logger\.go.*\n`)
 
@@ -192,11 +193,12 @@ func (s *slogLogger) String() string {
 }
 
 func (s *slogLogger) printLog(ctx context.Context, lvl logger.Level, msg string, attrs ...interface{}) {
-	s.opts.Meter.Counter(semconv.LoggerMessageTotal, "level", lvl.String()).Inc()
 	if !s.V(lvl) {
 		return
 	}
 
+	s.opts.Meter.Counter(semconv.LoggerMessageTotal, "level", lvl.String()).Inc()
+
 	attrs = prepareAttributes(attrs)
 
 	for _, fn := range s.opts.ContextAttrFuncs {
@@ -235,6 +237,7 @@ func NewLogger(opts ...logger.Option) logger.Logger {
 	s := &slogLogger{
 		opts: logger.NewOptions(opts...),
 	}
+	s.opts.CallerSkipCount = defaultCallerSkipCount
 
 	return s
 }