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#

#

# Copyright (C) 2007 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.

"""OS related QA tests.

"""

import os

import os.path

from ganeti import utils

from ganeti import constants

import qa_config

import qa_utils

from qa_utils import AssertEqual, StartSSH

_TEMP_OS_NAME = "TEMP-Ganeti-QA-OS"

_TEMP_OS_PATH = os.path.join(constants.OS_SEARCH_PATH[0], _TEMP_OS_NAME)

@qa_utils.DefineHook('os-list')

def TestOsList():

  """gnt-os list"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-os', 'list']

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

@qa_utils.DefineHook('os-diagnose')

def TestOsDiagnose():

  """gnt-os diagnose"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-os', 'diagnose']

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def _SetupTempOs(node, dir, valid):

  """Creates a temporary OS definition on the given node.

  """

  sq = utils.ShellQuoteArgs

  parts = [sq(["rm", "-rf", dir]),

           sq(["mkdir", "-p", dir]),

           sq(["cd", dir]),

           sq(["ln", "-fs", "/bin/true", "export"]),

           sq(["ln", "-fs", "/bin/true", "import"]),

           sq(["ln", "-fs", "/bin/true", "rename"])]

  if valid:

    parts.append(sq(["ln", "-fs", "/bin/true", "create"]))

  parts.append(sq(["echo", str(constants.OS_API_VERSION)]) +

               " >ganeti_api_version")

  cmd = ' && '.join(parts)

  print qa_utils.FormatInfo("Setting up %s with %s OS definition" %

                            (node["primary"],

                             ["an invalid", "a valid"][int(valid)]))

  AssertEqual(StartSSH(node['primary'], cmd).wait(), 0)

def _RemoveTempOs(node, dir):

  """Removes a temporary OS definition.

  """

  cmd = ['rm', '-rf', dir]

  AssertEqual(StartSSH(node['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def _TestOs(mode):

  """Generic function for OS definition testing

  """

  master = qa_config.GetMasterNode()

  dir = _TEMP_OS_PATH

  nodes = []

  try:

    i = 0

    for node in qa_config.get('nodes'):

      nodes.append(node)

      if mode == 0:

        valid = False

      elif mode == 1:

        valid = True

      else:

        valid = bool(i % 2)

      _SetupTempOs(node, dir, valid)

      i += 1

    cmd = ['gnt-os', 'diagnose']

    result = StartSSH(master['primary'],

                      utils.ShellQuoteArgs(cmd)).wait()

    if mode == 1:

      AssertEqual(result, 0)

    else:

      AssertEqual(result, 1)

  finally:

    for node in nodes:

      _RemoveTempOs(node, dir)

@qa_utils.DefineHook('os-valid')

def TestOsValid():

  """Testing valid OS definition"""

  return _TestOs(1)

@qa_utils.DefineHook('os-invalid')

def TestOsInvalid():

  """Testing invalid OS definition"""

  return _TestOs(0)

@qa_utils.DefineHook('os-partially-valid')

def TestOsPartiallyValid():

  """Testing partially valid OS definition"""

  return _TestOs(2)