這篇文章將為大家詳細講解有關(guān)Python文件監(jiān)聽工具pyinotify與watchdog怎么用,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
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支持的監(jiān)控事件
@cvar IN_ACCESS: File was accessed. @type IN_ACCESS: int @cvar IN_MODIFY: File was modified. @type IN_MODIFY: int @cvar IN_ATTRIB: Metadata changed. @type IN_ATTRIB: int @cvar IN_CLOSE_WRITE: Writtable file was closed. @type IN_CLOSE_WRITE: int @cvar IN_CLOSE_NOWRITE: Unwrittable file closed. @type IN_CLOSE_NOWRITE: int @cvar IN_OPEN: File was opened. @type IN_OPEN: int @cvar IN_MOVED_FROM: File was moved from X. @type IN_MOVED_FROM: int @cvar IN_MOVED_TO: File was moved to Y. @type IN_MOVED_TO: int @cvar IN_CREATE: Subfile was created. @type IN_CREATE: int @cvar IN_DELETE: Subfile was deleted. @type IN_DELETE: int @cvar IN_DELETE_SELF: Self (watched item itself) was deleted. @type IN_DELETE_SELF: int @cvar IN_MOVE_SELF: Self (watched item itself) was moved. @type IN_MOVE_SELF: int @cvar IN_UNMOUNT: Backing fs was unmounted. @type IN_UNMOUNT: int @cvar IN_Q_OVERFLOW: Event queued overflowed. @type IN_Q_OVERFLOW: int @cvar IN_IGNORED: File was ignored. @type IN_IGNORED: int @cvar IN_ONLYDIR: only watch the path if it is a directory (new in kernel 2.6.15). @type IN_ONLYDIR: int @cvar IN_DONT_FOLLOW: don't follow a symlink (new in kernel 2.6.15). IN_ONLYDIR we can make sure that we don't watch the target of symlinks. @type IN_DONT_FOLLOW: int @cvar IN_EXCL_UNLINK: Events are not generated for children after they have been unlinked from the watched directory. (new in kernel 2.6.36). @type IN_EXCL_UNLINK: int @cvar IN_MASK_ADD: add to the mask of an already existing watch (new in kernel 2.6.14). @type IN_MASK_ADD: int @cvar IN_ISDIR: Event occurred against dir. @type IN_ISDIR: int @cvar IN_ONESHOT: Only send event once. @type IN_ONESHOT: int @cvar ALL_EVENTS: Alias for considering all of the events. @type ALL_EVENTS: int
python 3.6的demo
import sys import os import pyinotify WATCH_PATH = '/home/lp/ftp' # 監(jiān)控目錄 if not WATCH_PATH: print("The WATCH_PATH setting MUST be set.") sys.exit() else: if os.path.exists(WATCH_PATH): print('Found watch path: path=%s.' % (WATCH_PATH)) else: print('The watch path NOT exists, watching stop now: path=%s.' % (WATCH_PATH)) sys.exit() # 事件回調(diào)函數(shù) class OnIOHandler(pyinotify.ProcessEvent): # 重寫文件寫入完成函數(shù) def process_IN_CLOSE_WRITE(self, event): # logging.info("create file: %s " % os.path.join(event.path, event.name)) # 處理成小圖片,然后發(fā)送給grpc服務器或者發(fā)給kafka file_path = os.path.join(event.path, event.name) print('文件完成寫入',file_path) # 重寫文件刪除函數(shù) def process_IN_DELETE(self, event): print("文件刪除: %s " % os.path.join(event.path, event.name)) # 重寫文件改變函數(shù) def process_IN_MODIFY(self, event): print("文件改變: %s " % os.path.join(event.path, event.name)) # 重寫文件創(chuàng)建函數(shù) def process_IN_CREATE(self, event): print("文件創(chuàng)建: %s " % os.path.join(event.path, event.name)) def auto_compile(path='.'): wm = pyinotify.WatchManager() # mask = pyinotify.EventsCodes.ALL_FLAGS.get('IN_CREATE', 0) # mask = pyinotify.EventsCodes.FLAG_COLLECTIONS['OP_FLAGS']['IN_CREATE'] # 監(jiān)控內(nèi)容,只監(jiān)聽文件被完成寫入 mask = pyinotify.IN_CREATE | pyinotify.IN_CLOSE_WRITE notifier = pyinotify.ThreadedNotifier(wm, OnIOHandler()) # 回調(diào)函數(shù) notifier.start() wm.add_watch(path, mask, rec=True, auto_add=True) print('Start monitoring %s' % path) while True: try: notifier.process_events() if notifier.check_events(): notifier.read_events() except KeyboardInterrupt: notifier.stop() break if __name__ == "__main__": auto_compile(WATCH_PATH) print('monitor close')
watchdog庫
支持的監(jiān)控事件
EVENT_TYPE_MODIFIED: self.on_modified, EVENT_TYPE_MOVED: self.on_moved, EVENT_TYPE_CREATED: self.on_created, EVENT_TYPE_DELETED: self.on_deleted,
需要注意的是,文件改變,也會觸發(fā)文件夾的改變
python3.6的demo
#! /usr/bin/env python # -*- coding: utf-8 -*- from __future__ import print_function import asyncio import base64 import logging import os import shutil import sys from datetime import datetime from watchdog.events import FileSystemEventHandler from watchdog.observers import Observer WATCH_PATH = '/home/lp/ftp' # 監(jiān)控目錄 class FileMonitorHandler(FileSystemEventHandler): def __init__(self, **kwargs): super(FileMonitorHandler, self).__init__(**kwargs) # 監(jiān)控目錄 目錄下面以device_id為目錄存放各自的圖片 self._watch_path = WATCH_PATH # 重寫文件改變函數(shù),文件改變都會觸發(fā)文件夾變化 def on_modified(self, event): if not event.is_directory: # 文件改變都會觸發(fā)文件夾變化 file_path = event.src_path print("文件改變: %s " % file_path) if __name__ == "__main__": event_handler = FileMonitorHandler() observer = Observer() observer.schedule(event_handler, path=WATCH_PATH, recursive=True) # recursive遞歸的 observer.start() observer.join()
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