问题描述
我需要编写一个程序来监视 ftp 服务器上的目录,然后发送一条包含新文件路径的消息。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()
但是当我尝试用那个 FTP 上的文件夹替换 path
时,我得到了 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 上的回答做了这个:
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,port))
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:file1
和 file2
是新创建的:
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。
解决方法
这是在我无法从商店中找到任何可以帮助我的东西之后的有效解决方案(任务是在 python 中制作):
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。斜线方向相反,因为消息需要在 Windows 中读取。然后将 path
变量插入到数据库中。