add support for context attrs funcs

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

zerolog.go

@@ -214,8 +214,17 @@ func (l *zeroLogger) Log(ctx context.Context, level logger.Level, args ...interf
 		return
 	}
 
+	var attrs []interface{}
+	for _, fn := range l.opts.Options.ContextAttrFuncs {
+		attrs = append(attrs, fn(ctx)...)
+	}
+
 	msg := fmt.Sprint(args...)
+	if len(attrs) > 0 {
+		l.zLog.WithLevel(loggerToZerologLevel(level)).Fields(attrs).Msg(msg)
+	} else {
 		l.zLog.WithLevel(loggerToZerologLevel(level)).Msg(msg)
+	}
 }
 
 func (l *zeroLogger) Logf(ctx context.Context, level logger.Level, format string, args ...interface{}) {
@@ -223,7 +232,16 @@ func (l *zeroLogger) Logf(ctx context.Context, level logger.Level, format string
 		return
 	}
 
+	var attrs []interface{}
+	for _, fn := range l.opts.Options.ContextAttrFuncs {
+		attrs = append(attrs, fn(ctx)...)
+	}
+
+	if len(attrs) > 0 {
+		l.zLog.WithLevel(loggerToZerologLevel(level)).Fields(attrs).Msgf(format, args...)
+	} else {
 		l.zLog.WithLevel(loggerToZerologLevel(level)).Msgf(format, args...)
+	}
 }
 
 func (l *zeroLogger) String() string {