feat: new methods to check enabled log level

Adding 6 methods on 'exported', 'logger' and 'entry':
- IsDebugEnabled() bool
- IsInfoEnabled() bool
- IsWarnEnabled() bool
- IsErrorEnabled() bool
- IsFatalEnabled() bool
- IsPanicEnabled() bool

Replace duplicated 'if logger.level() >= XxxxLevel' by a call to the new methods in 'logger' and 'entry'

Closes #761

logger.go

@@ -113,7 +113,7 @@ func (logger *Logger) WithError(err error) *Entry {
 }
 
 func (logger *Logger) Debugf(format string, args ...interface{}) {
-	if logger.level() >= DebugLevel {
+	if logger.IsDebugEnabled() {
 		entry := logger.newEntry()
 		entry.Debugf(format, args...)
 		logger.releaseEntry(entry)
@@ -121,7 +121,7 @@ func (logger *Logger) Debugf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Infof(format string, args ...interface{}) {
-	if logger.level() >= InfoLevel {
+	if logger.IsInfoEnabled() {
 		entry := logger.newEntry()
 		entry.Infof(format, args...)
 		logger.releaseEntry(entry)
@@ -135,7 +135,7 @@ func (logger *Logger) Printf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warnf(format string, args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -143,7 +143,7 @@ func (logger *Logger) Warnf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warningf(format string, args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -151,7 +151,7 @@ func (logger *Logger) Warningf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Errorf(format string, args ...interface{}) {
-	if logger.level() >= ErrorLevel {
+	if logger.IsErrorEnabled() {
 		entry := logger.newEntry()
 		entry.Errorf(format, args...)
 		logger.releaseEntry(entry)
@@ -159,7 +159,7 @@ func (logger *Logger) Errorf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Fatalf(format string, args ...interface{}) {
-	if logger.level() >= FatalLevel {
+	if logger.IsFatalEnabled() {
 		entry := logger.newEntry()
 		entry.Fatalf(format, args...)
 		logger.releaseEntry(entry)
@@ -168,7 +168,7 @@ func (logger *Logger) Fatalf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Panicf(format string, args ...interface{}) {
-	if logger.level() >= PanicLevel {
+	if logger.IsPanicEnabled() {
 		entry := logger.newEntry()
 		entry.Panicf(format, args...)
 		logger.releaseEntry(entry)
@@ -176,7 +176,7 @@ func (logger *Logger) Panicf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Debug(args ...interface{}) {
-	if logger.level() >= DebugLevel {
+	if logger.IsDebugEnabled() {
 		entry := logger.newEntry()
 		entry.Debug(args...)
 		logger.releaseEntry(entry)
@@ -184,7 +184,7 @@ func (logger *Logger) Debug(args ...interface{}) {
 }
 
 func (logger *Logger) Info(args ...interface{}) {
-	if logger.level() >= InfoLevel {
+	if logger.IsInfoEnabled() {
 		entry := logger.newEntry()
 		entry.Info(args...)
 		logger.releaseEntry(entry)
@@ -198,7 +198,7 @@ func (logger *Logger) Print(args ...interface{}) {
 }
 
 func (logger *Logger) Warn(args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -206,7 +206,7 @@ func (logger *Logger) Warn(args ...interface{}) {
 }
 
 func (logger *Logger) Warning(args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -214,7 +214,7 @@ func (logger *Logger) Warning(args ...interface{}) {
 }
 
 func (logger *Logger) Error(args ...interface{}) {
-	if logger.level() >= ErrorLevel {
+	if logger.IsErrorEnabled() {
 		entry := logger.newEntry()
 		entry.Error(args...)
 		logger.releaseEntry(entry)
@@ -222,7 +222,7 @@ func (logger *Logger) Error(args ...interface{}) {
 }
 
 func (logger *Logger) Fatal(args ...interface{}) {
-	if logger.level() >= FatalLevel {
+	if logger.IsFatalEnabled() {
 		entry := logger.newEntry()
 		entry.Fatal(args...)
 		logger.releaseEntry(entry)
@@ -231,7 +231,7 @@ func (logger *Logger) Fatal(args ...interface{}) {
 }
 
 func (logger *Logger) Panic(args ...interface{}) {
-	if logger.level() >= PanicLevel {
+	if logger.IsPanicEnabled() {
 		entry := logger.newEntry()
 		entry.Panic(args...)
 		logger.releaseEntry(entry)
@@ -239,7 +239,7 @@ func (logger *Logger) Panic(args ...interface{}) {
 }
 
 func (logger *Logger) Debugln(args ...interface{}) {
-	if logger.level() >= DebugLevel {
+	if logger.IsDebugEnabled() {
 		entry := logger.newEntry()
 		entry.Debugln(args...)
 		logger.releaseEntry(entry)
@@ -247,7 +247,7 @@ func (logger *Logger) Debugln(args ...interface{}) {
 }
 
 func (logger *Logger) Infoln(args ...interface{}) {
-	if logger.level() >= InfoLevel {
+	if logger.IsInfoEnabled() {
 		entry := logger.newEntry()
 		entry.Infoln(args...)
 		logger.releaseEntry(entry)
@@ -261,7 +261,7 @@ func (logger *Logger) Println(args ...interface{}) {
 }
 
 func (logger *Logger) Warnln(args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -269,7 +269,7 @@ func (logger *Logger) Warnln(args ...interface{}) {
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
-	if logger.level() >= WarnLevel {
+	if logger.IsWarnEnabled() {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -277,7 +277,7 @@ func (logger *Logger) Warningln(args ...interface{}) {
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {
-	if logger.level() >= ErrorLevel {
+	if logger.IsErrorEnabled() {
 		entry := logger.newEntry()
 		entry.Errorln(args...)
 		logger.releaseEntry(entry)
@@ -285,7 +285,7 @@ func (logger *Logger) Errorln(args ...interface{}) {
 }
 
 func (logger *Logger) Fatalln(args ...interface{}) {
-	if logger.level() >= FatalLevel {
+	if logger.IsFatalEnabled() {
 		entry := logger.newEntry()
 		entry.Fatalln(args...)
 		logger.releaseEntry(entry)
@@ -294,7 +294,7 @@ func (logger *Logger) Fatalln(args ...interface{}) {
 }
 
 func (logger *Logger) Panicln(args ...interface{}) {
-	if logger.level() >= PanicLevel {
+	if logger.IsPanicEnabled() {
 		entry := logger.newEntry()
 		entry.Panicln(args...)
 		logger.releaseEntry(entry)
@@ -321,3 +321,27 @@ func (logger *Logger) AddHook(hook Hook) {
 	defer logger.mu.Unlock()
 	logger.Hooks.Add(hook)
 }
+
+func (logger *Logger) IsDebugEnabled() bool {
+	return logger.level() >= DebugLevel
+}
+
+func (logger *Logger) IsInfoEnabled() bool {
+	return logger.level() >= InfoLevel
+}
+
+func (logger *Logger) IsWarnEnabled() bool {
+	return logger.level() >= WarnLevel
+}
+
+func (logger *Logger) IsErrorEnabled() bool {
+	return logger.level() >= ErrorLevel
+}
+
+func (logger *Logger) IsFatalEnabled() bool {
+	return logger.level() >= FatalLevel
+}
+
+func (logger *Logger) IsPanicEnabled() bool {
+	return logger.level() >= PanicLevel
+}