Added TRACE level logging.

entry.go

@@ -168,6 +168,12 @@ func (entry *Entry) Debug(args ...interface{}) {
 	}
 }
 
+func (entry *Entry) Trace(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.log(TraceLevel, fmt.Sprint(args...))
+	}
+}
+
 func (entry *Entry) Print(args ...interface{}) {
 	entry.Info(args...)
 }
@@ -216,6 +222,12 @@ func (entry *Entry) Debugf(format string, args ...interface{}) {
 	}
 }
 
+func (entry *Entry) Tracef(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.Trace(fmt.Sprintf(format, args...))
+	}
+}
+
 func (entry *Entry) Infof(format string, args ...interface{}) {
 	if entry.Logger.IsLevelEnabled(InfoLevel) {
 		entry.Info(fmt.Sprintf(format, args...))
@@ -257,6 +269,12 @@ func (entry *Entry) Panicf(format string, args ...interface{}) {
 
 // Entry Println family functions
 
+func (entry *Entry) Traceln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.Trace(entry.sprintlnn(args...))
+	}
+}
+
 func (entry *Entry) Debugln(args ...interface{}) {
 	if entry.Logger.IsLevelEnabled(DebugLevel) {
 		entry.Debug(entry.sprintlnn(args...))