watcher.py 文件源码

def watch_file(inputfile, timeline_handler):
    # log handler does not load on detecting the initial file
    timeline_handler.load(inputfile)
    event_handler = LogHandler(inputfile, timeline_handler)
    observer = Observer()
    observer.schedule(event_handler,
                      os.path.dirname(os.path.abspath(inputfile)))
    observer.start()
    yield
    observer.stop()
    observer.join()