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"""The Python implementation of the GRPC interoperability test server."""

import argparse
import logging
import time

from grpc.early_adopter import implementations

from interop import methods
from interop import resources

_ONE_DAY_IN_SECONDS = 60 * 60 * 24


def serve():
  parser = argparse.ArgumentParser()
  parser.add_argument(
      '--port', help='the port on which to serve', type=int)
  parser.add_argument(
      '--use_tls', help='require a secure connection', dest='use_tls',
      action='store_true')
  args = parser.parse_args()

  if args.use_tls:
    private_key = resources.private_key()
    certificate_chain = resources.certificate_chain()
    server = implementations.server(
        methods.SERVICE_NAME, methods.SERVER_METHODS, args.port,
        private_key=private_key, certificate_chain=certificate_chain)
  else:
    server = implementations.server(
        methods.SERVICE_NAME, methods.SERVER_METHODS, args.port)

  server.start()
  logging.info('Server serving.')
  try:
    while True:
      time.sleep(_ONE_DAY_IN_SECONDS)
  except BaseException as e:
    logging.info('Caught exception "%s"; stopping server...', e)
    server.stop()
    logging.info('Server stopped; exiting.')

if __name__ == '__main__':
  serve()
