from argparse import ArgumentParser
from contextlib import closing
from time import sleep

import requests


def main():
  parser = ArgumentParser(description="block until the given endpoints return 200")
  parser.add_argument('endpoints', type=str, nargs='+', help='the endpoints to wait for')
  for endpoint in parser.parse_args().endpoints:
    listening = False
    while not listening:
      try:
        listening = requests.get(endpoint).status_code == 200
      except requests.exceptions.ConnectionError:
        pass
      sleep(1)


if __name__ == '__main__':
  main()