#!/usr/bin/python3

import os
import sys
import shutil
import time
import random
import threading
import subprocess


ev = threading.Event()


def worker():
  path = "/mnt/first"
  dest = os.path.join(path, "dest")
  fordel = os.path.join(path, "fordel")

  while True:
    try:
      if os.path.islink(dest):
        os.unlink(dest)
      elif os.path.isdir(dest):
        shutil.rmtree(dest)

      if os.path.isdir(fordel):
        shutil.rmtree(fordel)

      os.mkdir(dest)
      ev.set()
      os.rename(dest, fordel)
      os.symlink("/tmp", dest)
      ev.clear()
    except Exception as err:
      print(err)


def main():
  threading.Thread(target=worker, daemon=True).start()

  # Use smbclient to force use of separate smbd process as well as to require
  # resolving of symlink on server
  cmd = [
      "bin/smbclient",
      "-U", "johndoe",
      r"\\172.17.0.2\data",
      "pass",
      "-",
      ]

  with subprocess.Popen(cmd, stdin=subprocess.PIPE, universal_newlines=True) as proc:
    while True:
      ev.wait()
      proc.stdin.write("mkdir dest/shouldnotexist.{}\n".format(time.time()))
      proc.stdin.flush()


if __name__ == "__main__":
  main()

# vim: set sw=2 sts=2 et :