Clone directory (recursive) and restore any changes made to it.
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#!/usr/bin/env python3
import os
import logging
import string
import hashlib
import time
import shutil
class Cloner:
def __init__(self, targetDir: str, backupDir: str):
self.targetDir = targetDir
self.backupDir = backupDir
self.interval = 1
def handleDir(self, dirPath: str):
backupDirPath = dirPath.replace(self.targetDir, self.backupDir)
if not os.path.isdir(backupDirPath):
os.mkdir(backupDirPath)
with os.scandir(dirPath) as it:
for entry in it:
if entry.is_dir():
self.handleDir(entry.path)
elif entry.is_file():
self.handleFile(entry.path)
def handleFile(self, targetFileName: str):
cloneFileName = targetFileName.replace(self.targetDir, self.backupDir)
cloneHashFileName = cloneFileName + '.md5'
if os.path.exists(cloneFileName):
with open(cloneHashFileName, 'r') as cloneHashFile, open(targetFileName, 'rb') as targetFile:
cloneHashFileContent = cloneHashFile.read()
targetFileContent = targetFile.read()
realHash = hashlib.md5(targetFileContent).hexdigest()
if realHash != cloneHashFileContent:
shutil.copyfile(cloneFileName, targetFileName)
logging.warning(
'{file} failed check, restoring...'.format(file=targetFileName))
else:
logging.info('{file} is fine'.format(file=targetFileName))
else:
logging.warning(
'{file} is a new file, added to backup dir'.format(file=targetFileName))
shutil.copyfile(targetFileName, cloneFileName)
with open(cloneHashFileName, 'w') as cloneHashFile, open(targetFileName, 'rb') as targetFile:
targetFileContent = targetFile.read()
cloneHashFile.write(hashlib.md5(targetFileContent).hexdigest())
def setLog(self, logFileName: str):
logFormatter = logging.Formatter(
fmt="[%(asctime)s][%(levelname)s] %(message)s",
datefmt='%d-%b-%y %H:%M:%S')
rootLogger = logging.getLogger()
fileHandler = logging.FileHandler(logFileName, mode='a')
fileHandler.setFormatter(logFormatter)
rootLogger.addHandler(fileHandler)
# # uncomment this to enable console logging
# consoleHandler = logging.StreamHandler()
# consoleHandler.setFormatter(logFormatter)
# rootLogger.addHandler(consoleHandler)
rootLogger.setLevel(logging.WARNING)
def setInterval(self, interval: int):
self.interval = interval
def start(self):
while True:
self.handleDir(self.targetDir)
time.sleep(5)
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser()
parser.add_argument(
'--target',
metavar='PATH',
type=str,
required=True,
help='directory to clone and monitor')
parser.add_argument(
'--backup',
metavar='PATH',
type=str,
required=True,
help='backup directory to store clone'
)
parser.add_argument(
'--interval',
metavar='SECOND',
type=int,
default=1,
help='interval in second(s) which the scripts run, default is 1'
)
parser.add_argument(
'--log',
metavar='LOGFILE',
type=str,
default='/var/log/py-dir-watcher/log.txt',
help='specify custom logfile target, default is \'/var/log/py-dir-watcher/log.txt\' '
)
args = parser.parse_args()
app = Cloner(args.target, args.backup)
app.setLog(args.log)
app.setInterval(args.interval)
app.start()