logging

log/logs.go

@@ -118,11 +118,21 @@ func (l *Logger) Tracef(format string, v ...interface{}) {
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
 
+// IsTraceEnabled determines whether the trace level is enabled.
+func (l *Logger) IsTraceEnabled() bool {
+	return l.level <= Trace
+}
+
 // IsDebugEnabled determines whether the debug level is enabled.
 func (l *Logger) IsDebugEnabled() bool {
 	return l.level <= Debug
 }
 
+// IsWarnEnabled determines whether the debug level is enabled.
+func (l *Logger) IsWarnEnabled() bool {
+	return l.level <= Warn
+}
+
 // Debug prints debug level message.
 func (l *Logger) Debug(v ...interface{}) {
 	if Debug < l.level {

session/users.go

@@ -171,7 +171,7 @@ func LoginHandler(w http.ResponseWriter, r *http.Request) {
 	}{}
 
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
-		logger.Error(err)
+		logger.Error("login error: ", err)
 		succ = false
 
 		return