Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2013 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.

"""Script for testing ganeti.bootstrap"""

import shutil

import tempfile

import unittest

from ganeti import bootstrap

from ganeti import constants

from ganeti.storage import drbd

from ganeti import errors

from ganeti import pathutils

import testutils

import mock

class TestPrepareFileStorage(unittest.TestCase):

  def setUp(self):

    unittest.TestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

  def tearDown(self):

    shutil.rmtree(self.tmpdir)

  def enableFileStorage(self, enable):

    self.enabled_disk_templates = []

    if enable:

      self.enabled_disk_templates.append(constants.DT_FILE)

    else:

      # anything != DT_FILE would do here

      self.enabled_disk_templates.append(constants.DT_DISKLESS)

  def testFallBackToDefaultPathAcceptedFileStorageEnabled(self):

    expected_file_storage_dir = pathutils.DEFAULT_FILE_STORAGE_DIR

    acceptance_fn = mock.Mock()

    init_fn = mock.Mock(return_value=expected_file_storage_dir)

    self.enableFileStorage(True)

    file_storage_dir = bootstrap._PrepareFileStorage(

        self.enabled_disk_templates, None, acceptance_fn=acceptance_fn,

        init_fn=init_fn)

    self.assertEqual(expected_file_storage_dir, file_storage_dir)

    acceptance_fn.assert_called_with(expected_file_storage_dir)

    init_fn.assert_called_with(expected_file_storage_dir)

  def testPathAcceptedFileStorageEnabled(self):

    acceptance_fn = mock.Mock()

    init_fn = mock.Mock(return_value=self.tmpdir)

    self.enableFileStorage(True)

    file_storage_dir = bootstrap._PrepareFileStorage(

        self.enabled_disk_templates, self.tmpdir, acceptance_fn=acceptance_fn,

        init_fn=init_fn)

    self.assertEqual(self.tmpdir, file_storage_dir)

    acceptance_fn.assert_called_with(self.tmpdir)

    init_fn.assert_called_with(self.tmpdir)

  def testPathAcceptedFileStorageDisabled(self):

    acceptance_fn = mock.Mock()

    init_fn = mock.Mock()

    self.enableFileStorage(False)

    file_storage_dir = bootstrap._PrepareFileStorage(

        self.enabled_disk_templates, self.tmpdir, acceptance_fn=acceptance_fn,

        init_fn=init_fn)

    self.assertEqual(self.tmpdir, file_storage_dir)

    self.assertFalse(init_fn.called)

    self.assertFalse(acceptance_fn.called)

  def testPathNotAccepted(self):

    acceptance_fn = mock.Mock()

    acceptance_fn.side_effect = errors.FileStoragePathError

    init_fn = mock.Mock()

    self.enableFileStorage(True)

    self.assertRaises(errors.OpPrereqError, bootstrap._PrepareFileStorage,

        self.enabled_disk_templates, self.tmpdir, acceptance_fn=acceptance_fn,

        init_fn=init_fn)

    acceptance_fn.assert_called_with(self.tmpdir)

class TestInitCheckEnabledDiskTemplates(unittest.TestCase):

  def testValidTemplates(self):

    enabled_disk_templates = list(constants.DISK_TEMPLATES)

    bootstrap._InitCheckEnabledDiskTemplates(enabled_disk_templates)

  def testInvalidTemplates(self):

    enabled_disk_templates = ["pinkbunny"]

    self.assertRaises(errors.OpPrereqError,

        bootstrap._InitCheckEnabledDiskTemplates, enabled_disk_templates)

  def testEmptyTemplates(self):

    enabled_disk_templates = []

    self.assertRaises(errors.OpPrereqError,

        bootstrap._InitCheckEnabledDiskTemplates, enabled_disk_templates)

class TestRestrictIpolicyToEnabledDiskTemplates(unittest.TestCase):

  def testNoRestriction(self):

    allowed_disk_templates = list(constants.DISK_TEMPLATES)

    ipolicy = {constants.IPOLICY_DTS: allowed_disk_templates}

    enabled_disk_templates = list(constants.DISK_TEMPLATES)

    bootstrap._RestrictIpolicyToEnabledDiskTemplates(

        ipolicy, enabled_disk_templates)

    self.assertEqual(ipolicy[constants.IPOLICY_DTS], allowed_disk_templates)

  def testRestriction(self):

    allowed_disk_templates = [constants.DT_DRBD8, constants.DT_PLAIN]

    ipolicy = {constants.IPOLICY_DTS: allowed_disk_templates}

    enabled_disk_templates = [constants.DT_PLAIN, constants.DT_FILE]

    bootstrap._RestrictIpolicyToEnabledDiskTemplates(

        ipolicy, enabled_disk_templates)

    self.assertEqual(ipolicy[constants.IPOLICY_DTS], [constants.DT_PLAIN])

class TestInitCheckDrbdHelper(unittest.TestCase):

  @testutils.patch_object(drbd.DRBD8, "GetUsermodeHelper")

  def testNoDrbd(self, drbd_mock_get_usermode_helper):

    drbd_enabled = False

    drbd_helper = None

    bootstrap._InitCheckDrbdHelper(drbd_helper, drbd_enabled)

  @testutils.patch_object(drbd.DRBD8, "GetUsermodeHelper")

  def testHelperNone(self, drbd_mock_get_usermode_helper):

    drbd_enabled = True

    current_helper = "/bin/helper"

    drbd_helper = None

    drbd_mock_get_usermode_helper.return_value = current_helper

    bootstrap._InitCheckDrbdHelper(drbd_helper, drbd_enabled)

  @testutils.patch_object(drbd.DRBD8, "GetUsermodeHelper")

  def testHelperOk(self, drbd_mock_get_usermode_helper):

    drbd_enabled = True

    current_helper = "/bin/helper"

    drbd_helper = "/bin/helper"

    drbd_mock_get_usermode_helper.return_value = current_helper

    bootstrap._InitCheckDrbdHelper(drbd_helper, drbd_enabled)

  @testutils.patch_object(drbd.DRBD8, "GetUsermodeHelper")

  def testWrongHelper(self, drbd_mock_get_usermode_helper):

    drbd_enabled = True

    current_helper = "/bin/otherhelper"

    drbd_helper = "/bin/helper"

    drbd_mock_get_usermode_helper.return_value = current_helper

    self.assertRaises(errors.OpPrereqError,

        bootstrap._InitCheckDrbdHelper, drbd_helper, drbd_enabled)

  @testutils.patch_object(drbd.DRBD8, "GetUsermodeHelper")

  def testHelperCheckFails(self, drbd_mock_get_usermode_helper):

    drbd_enabled = True

    drbd_helper = "/bin/helper"

    drbd_mock_get_usermode_helper.side_effect=errors.BlockDeviceError

    self.assertRaises(errors.OpPrereqError,

        bootstrap._InitCheckDrbdHelper, drbd_helper, drbd_enabled)

if __name__ == "__main__":

  testutils.GanetiTestProgram()