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#!/usr/bin/python
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#
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# Copyright (C) 2010 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Helpers for testing import-export daemon"""
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import os
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import sys
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import errno
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import time
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from ganeti import constants
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from ganeti import utils
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from ganeti import objects
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from ganeti import serializer
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RETRY_INTERVAL = (0.1, 1.1, 1)
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TIMEOUT = int(os.getenv("TIMEOUT", 30))
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VALIDITY = int(os.getenv("VALIDITY", 1))
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def Log(msg, *args):
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  if args:
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    line = msg % args
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  else:
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    line = msg
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  sys.stderr.write("%0.6f, pid %s: %s\n" % (time.time(), os.getpid(), line))
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  sys.stderr.flush()
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def _GetImportExportData(filename):
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  try:
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    data = utils.ReadFile(filename)
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  except EnvironmentError, err:
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    Log("%s = %s", filename, err)
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    if err.errno != errno.ENOENT:
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      raise
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    raise utils.RetryAgain()
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  Log("%s = %s", filename, data.strip())
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  return objects.ImportExportStatus.FromDict(serializer.LoadJson(data))
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def _CheckConnected(filename):
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  if not _GetImportExportData(filename).connected:
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    Log("Not connected")
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    raise utils.RetryAgain()
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  Log("Connected")
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def _CheckListenPort(filename):
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  port = _GetImportExportData(filename).listen_port
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  if not port:
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    Log("No port")
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    raise utils.RetryAgain()
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  Log("Listening on %s", port)
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  return port
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def WaitForListenPort(filename):
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  return utils.Retry(_CheckListenPort, RETRY_INTERVAL, TIMEOUT,
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                     args=(filename, ))
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def WaitForConnected(filename):
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  utils.Retry(_CheckConnected, RETRY_INTERVAL, TIMEOUT, args=(filename, ))
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def main():
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  (filename, what) = sys.argv[1:]
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  Log("Running helper for %s %s", filename, what)
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  if what == "listen-port":
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    print WaitForListenPort(filename)
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  elif what == "connected":
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    WaitForConnected(filename)
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  elif what == "gencert":
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    utils.GenerateSelfSignedSslCert(filename, validity=VALIDITY)
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  else:
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    raise Exception("Unknown command '%s'" % what)
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if __name__ == "__main__":
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  main()