关于文件的生命周期

Michael J. May, Etamar Laron, Khalid Zoabi, Havah Gerhardt
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引用次数: 5

摘要

用户和操作系统(os)对文件的看法截然不同。操作系统使用文件来保存数据和结构化信息。为了实现这一点,操作系统将文件视为在分层文件系统中管理的命名字节集合。尽管它们在计算中起着关键作用,但很少有人关注文件的生命周期、文件内容的演变或文件元数据的演变。相比之下,用户对文件有丰富的心理模型:他们将文件分组到项目中,将数据存储库发送给其他人,随着时间的推移处理文档,并将它们保存起来以备将来使用。当前的操作系统和版本控制系统忽略了这样的心理模型,保留了一个选择性的、手动指定的版本历史。保留心智模型允许应用程序更好地匹配用户查看文件的方式,使文件处理和归档工具更有效。我们提出了两种操作系统可以采用的机制来更好地保存心智模型:记录文件进程的文件生命周期事件(File Lifecycle Events, fle)和将它们组合成有意义模式的复杂文件事件(Complex File Events, CFEs)。我们提出了复杂文件事件引擎(CoFEE),它使用文件系统监控和可扩展的规则库(Drools)来检测文件事件并将其转换为复杂文件事件。cfe持久化在NoSQL存储中,以供以后查询。
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On the Lifecycle of the File
Users and Operating Systems (OSs) have vastly different views of files. OSs use files to persist data and structured information. To accomplish this, OSs treat files as named collections of bytes managed in hierarchical file systems. Despite their critical role in computing, little attention is paid to the lifecycle of the file, the evolution of file contents, or the evolution of file metadata. In contrast, users have rich mental models of files: they group files into projects, send data repositories to others, work on documents over time, and stash them aside for future use. Current OSs and Revision Control Systems ignore such mental models, persisting a selective, manually designated history of revisions. Preserving the mental model allows applications to better match how users view their files, making file processing and archiving tools more effective. We propose two mechanisms that OSs can adopt to better preserve the mental model: File Lifecycle Events (FLEs) that record a file’s progression and Complex File Events (CFEs) that combine them into meaningful patterns. We present the Complex File Events Engine (CoFEE), which uses file system monitoring and an extensible rulebase (Drools) to detect FLEs and convert them into complex ones. CFEs are persisted in NoSQL stores for later querying.
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