Method Write

lumberjack.go:135–162

Write implements io.Writer. If a write would cause the log file to be larger than MaxSize, the file is closed, renamed to include a timestamp of the current time, and a new log file is created using the original log file name. If the length of the write is greater than MaxSize, an error is returned

(p []byte)

// current time, and a new log file is created using the original log file name.
// If the length of the write is greater than MaxSize, an error is returned.
func (l *Logger) Write(p []byte) (n int, err error) {
	l.mu.Lock()
	defer l.mu.Unlock()

	writeLen := int64(len(p))
	if writeLen > l.max() {
		return 0, fmt.Errorf(
			"write length %d exceeds maximum file size %d", writeLen, l.max(),
		)
	}

	if l.file == nil {
		if err = l.openExistingOrNew(len(p)); err != nil {
			return 0, err
		}
	}

	if l.size+writeLen > l.max() {
		if err := l.rotate(); err != nil {
			return 0, err
		}
	}

	n, err = l.file.Write(p)
	l.size += int64(n)

	return n, err
}

// Close implements io.Closer, and closes the current logfile.
func (l *Logger) Close() error {