MttangLog4jRollingFileAppender.java 文件源码

/**
 * This method differentiates RollingFileAppender from its super class.
 * 
 * @since 0.9.0
 */
protected void subAppend(LoggingEvent event) {
    super.subAppend(event);
    if (fileName != null && qw != null) {

        String nowDate = sdf.format(new Date());
        // 检测日期是否已经变更了，如果变更了就要重创建日期目录
        if (!fileMaps.get(fileName).getDate().equals(nowDate)) {
            rollOver();
            return;
        }

        long size = ((CountingQuietWriter) qw).getCount();
        if (size >= maxFileSize && size >= nextRollover) {
            rollOver();
        }
    }
}