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pyinotify库
支持的监控事件
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@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()
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