Python文件监听工具pyinotify与watchdog怎么用-创新互联
这篇文章将为大家详细讲解有关Python文件监听工具pyinotify与watchdog怎么用，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
pyinotify库
支持的监控事件
@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' # 监控目录
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()
# 事件回调函数
class OnIOHandler(pyinotify.ProcessEvent):
# 重写文件写入完成函数
def process_IN_CLOSE_WRITE(self, event):
# logging.info("create file: %s " % os.path.join(event.path, event.name))
# 处理成小图片，然后发送给grpc服务器或者发给kafka
file_path = os.path.join(event.path, event.name)
print('文件完成写入',file_path)
# 重写文件删除函数
def process_IN_DELETE(self, event):
print("文件删除: %s " % os.path.join(event.path, event.name))
# 重写文件改变函数
def process_IN_MODIFY(self, event):
print("文件改变: %s " % os.path.join(event.path, event.name))
# 重写文件创建函数
def process_IN_CREATE(self, event):
print("文件创建: %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'] # 监控内容，只监听文件被完成写入
mask = pyinotify.IN_CREATE | pyinotify.IN_CLOSE_WRITE
notifier = pyinotify.ThreadedNotifier(wm, OnIOHandler()) # 回调函数
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库
支持的监控事件
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，文件改变，也会触发文件夹的改变
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' # 监控目录
class FileMonitorHandler(FileSystemEventHandler):
def __init__(self, **kwargs):
super(FileMonitorHandler, self).__init__(**kwargs)
# 监控目录 目录下面以device_id为目录存放各自的图片
self._watch_path = WATCH_PATH
# 重写文件改变函数，文件改变都会触发文件夹变化
def on_modified(self, event):
if not event.is_directory: # 文件改变都会触发文件夹变化
file_path = event.src_path
print("文件改变: %s " % file_path)
if __name__ == "__main__":
event_handler = FileMonitorHandler()
observer = Observer()
observer.schedule(event_handler, path=WATCH_PATH, recursive=True) # recursive递归的
observer.start()
observer.join()关于“Python文件监听工具pyinotify与watchdog怎么用”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。
新闻名称：Python文件监听工具pyinotify与watchdog怎么用-创新互联
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