Python 查看 QNAP FTP 目录的变化并发送 UDP 消息

Python watch QNAP FTP directory for changes and send UDP messages

我需要编写一个程序来监视 ftp 服务器上的目录,然后发送一条消息,其中包含新文件的路径。所以我确实设法将 watchdog 用于本地文件夹,因为我只需要创建事件:

if __name__ == "__main__":
    patterns = "*"
    ignore_patterns = ""
    ignore_directories = False
    case_sensitive = False
    my_event_handler = PatternMatchingEventHandler(patterns, ignore_patterns, ignore_directories, case_sensitive)

    def on_created(event):
        byte_message = bytes(f"{event.src_path}", "utf-8")
        opened_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        opened_socket.sendto(byte_message, ('address', port))
        print(f"{event.src_path} created")
    
    my_event_handler.on_created = on_created

    path = r"local/path"
    go_recursively = True
    my_observer = Observer()
    my_observer.schedule(my_event_handler, path, recursive=go_recursively)

    my_observer.start()
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        my_observer.stop()

但是当我尝试用 FTP 上的文件夹替换 path 时,我得到 Access Denied 这是正确的,因为我没有设置登录名和密码。之后我根据 Stack Overflow 上的一个答案做了这个:

ftp = FTP()
ftp.set_pasv(True)
ftp.connect("address")
ftp.login('user', 'pass')

def changemon(dir='ftp/path/*'):
    ls_prev = set()

    while True:
        ls = set(ftp.nlst(dir))

        add = ls-ls_prev
        if add: 
            yield add 
        ls_prev = ls
        sleep(5)

for add in changemon():
    byte_message = bytes('\n'.join(r'address%' % i for i in add), 'utf-8')
    opened_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    opened_socket.sendto(byte_message, ('address', port))

问题在于它获取出现在 dir 中的每个文件。

所以我需要一些可以从中提取子文件夹名称和文件名的东西。像这样: file1file2 是新建的:

ftp/path/5000/file1
ftp/path/5001/file2

print('Folder is: ' + foldername)
Folder is: 5000
Folder is: 5001
print('New file is: ' + filename)
New file is: file1
New file is: file2

欢迎任何帮助。

这是我无法从商店中找到任何可以帮助我的解决方案(任务是在 python 中完成):

from ftplib import FTP
from time import sleep
import os
import byte
import socket
import numpy as np
import pandas as pd

ftp = FTP()
ftp.set_pasv(True)
ftp.connect("some-ip-address")
ftp.login('user', 'password')

def changemon(dir='/dir/*'):
    ls_prev = set()

    while True:
        ls = set(ftp.nlst(dir))

        add = ls-ls_prev
        if add:
            yield add

        ls_prev = ls
        sleep(5)

#tcp
for add in changemon():
    result = [i for i in add]
    array = np.array(result, dtype='str')
    df = pd.DataFrame(array, columns=None, index=None)
    for a in array:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((host, port))
        name = a.split('/')
        separator = ''
        path = (r'ip\dir\' + str(name[2]) + '\' + str(name[3]))
        device = name[2]
        message = bytes(separator.join(f'{device} desired string for the IP notification  \n'), 'utf-8')
        s.send(message)
        sleep(5)

这不是最漂亮的解决方案,但可以完成工作。斜杠方向相反,因为需要在 Windows 中读取消息。然后 path 变量被插入到数据库中。