#!/usr/bin/python
#

# Copyright (C) 2010 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""Helpers for testing import-export daemon"""

import os
import sys
import errno

from ganeti import constants
from ganeti import utils
from ganeti import objects
from ganeti import serializer


RETRY_INTERVAL = 0.1
TIMEOUT = int(os.getenv("TIMEOUT", 10))


def _GetImportExportData(filename):
  try:
    data = utils.ReadFile(filename)
  except EnvironmentError, err:
    if err.errno != errno.ENOENT:
      raise
    raise utils.RetryAgain()

  return objects.ImportExportStatus.FromDict(serializer.LoadJson(data))


def _CheckConnected(filename):
  if not _GetImportExportData(filename).connected:
    raise utils.RetryAgain()


def WaitForListenPort(filename):
  return utils.Retry(lambda: _GetImportExportData(filename).listen_port,
                     RETRY_INTERVAL, TIMEOUT)


def WaitForConnected(filename):
  utils.Retry(_CheckConnected, RETRY_INTERVAL, TIMEOUT, args=(filename, ))


def main():
  (filename, what) = sys.argv[1:]

  if what == "listen-port":
    print WaitForListenPort(filename)
  elif what == "connected":
    WaitForConnected(filename)
  elif what == "gencert":
    utils.GenerateSelfSignedSslCert(filename, validity=1)
  else:
    raise Exception("Unknown command '%s'" % what)


if __name__ == "__main__":
  main()