Make Record.Args public so can be accessed by backends

Author: aheuermann

format.go

@@ -237,8 +237,8 @@ func NewStringFormatter(format string) (Formatter, error) {
 		Id:     12345,
 		Time:   t,
 		Module: "logger",
+		Args:   []interface{}{"go"},
 		fmt:    "hello %s",
-		args:   []interface{}{"go"},
 	}
 	if err := fmter.Format(0, r, &bytes.Buffer{}); err != nil {
 		return nil, err

logger.go

@@ -45,11 +45,11 @@ type Record struct {
 	Time   time.Time
 	Module string
 	Level  Level
+	Args   []interface{}
 
 	// message is kept as a pointer to have shallow copies update this once
 	// needed.
 	message   *string
-	args      []interface{}
 	fmt       string
 	formatter Formatter
 	formatted string
@@ -69,12 +69,12 @@ func (r *Record) Formatted(calldepth int) string {
 func (r *Record) Message() string {
 	if r.message == nil {
 		// Redact the arguments that implements the Redactor interface
-		for i, arg := range r.args {
+		for i, arg := range r.Args {
 			if redactor, ok := arg.(Redactor); ok == true {
-				r.args[i] = redactor.Redacted()
+				r.Args[i] = redactor.Redacted()
 			}
 		}
-		msg := fmt.Sprintf(r.fmt, r.args...)
+		msg := fmt.Sprintf(r.fmt, r.Args...)
 		r.message = &msg
 	}
 	return *r.message
@@ -144,7 +144,7 @@ func (l *Logger) log(lvl Level, format string, args ...interface{}) {
 		Module: l.Module,
 		Level:  lvl,
 		fmt:    format,
-		args:   args,
+		Args:   args,
 	}
 
 	// TODO use channels to fan out the records to all backends?