func NewSizeLogger(fileDir, fileName, prefix string, fileCount int, fileSize int64, unit UNIT,
	logScan int64, logSeq int) *FileLogger {
	sizeLogger := &FileLogger{
		splitType:  SplitType_Size,
		mu:         new(sync.RWMutex),
		fileDir:    fileDir,
		fileName:   fileName,
		fileCount:  fileCount,
		fileSize:   fileSize * int64(unit),
		prefix:     prefix,
		logScan:    logScan,
		logChan:    make(chan string, logSeq),
		logLevel:   DEFAULT_LOG_LEVEL,
		logConsole: false,
	}

	sizeLogger.initLogger()

	return sizeLogger
}
func NewSizeLogger(fileDir, fileName, prefix string, fileCount int, fileSize int64, unit UNIT,
	logScan int64, logSeq int) *FileLogger {
	sizeLogger := &FileLogger{
		splitType:  SplitType_Size,
		mu:         new(sync.RWMutex),
		fileDir:    fileDir,
		fileName:   fileName,
		fileCount:  fileCount,
		fileSize:   fileSize * int64(unit),
		prefix:     prefix,
		logScan:    logScan,
		logChan:    make(chan string, logSeq),
		logLevel:   DEFAULT_LOG_LEVEL,
		logConsole: false,
	}

	sizeLogger.initLogger()

	return sizeLogger
}
func NewSizeLogger ( fileDir , fileName , prefix string , fileCount int , fileSize int64 , unit UNIT , logScan int64 , logSeq int ) * FileLogger { sizeLogger := & FileLogger { splitType : SplitType_Size , mu : new ( sync . RWMutex ) , fileDir : fileDir , fileName : fileName , fileCount : fileCount , fileSize : fileSize * int64 ( unit ) , prefix : prefix , logScan : logScan , logChan : make ( chan string , logSeq ) , logLevel : DEFAULT_LOG_LEVEL , logConsole : false , } sizeLogger . initLogger ( ) return sizeLogger }
// NewSizeLogger return a logger split by fileSize
// Parameters:
// 		file directory
// 		file name
// 		log's prefix
// 		fileCount holds maxCount of bak file
//		fileSize holds each of bak file's size
// 		unit stands for kb, mb, gb, tb
//		logScan after a logScan time will check fileLogger isMustSplit, default is 300s
NewSizeLogger return a logger split by fileSize Parameters : file directory file name log s prefix fileCount holds maxCount of bak file fileSize holds each of bak file s size unit stands for kb mb gb tb logScan after a logScan time will check fileLogger isMustSplit default is 300s