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 unittesting the ganeti.utils.storage module"""

import mock

import unittest

from ganeti import constants

from ganeti import errors

from ganeti import objects

from ganeti import pathutils

from ganeti.utils import storage

import testutils

class TestGetStorageUnitForDiskTemplate(unittest.TestCase):

  def setUp(self):

    self._default_vg_name = "some_vg_name"

    self._cfg = mock.Mock()

    self._cfg.GetVGName = mock.Mock(return_value=self._default_vg_name)

  def testGetDefaultStorageUnitForDiskTemplateLvm(self):

    for disk_template in [constants.DT_DRBD8, constants.DT_PLAIN]:

      (storage_type, storage_key) = \

          storage._GetDefaultStorageUnitForDiskTemplate(self._cfg,

                                                        disk_template)

      self.assertEqual(storage_type, constants.ST_LVM_VG)

      self.assertEqual(storage_key, self._default_vg_name)

  def testGetDefaultStorageUnitForDiskTemplateFile(self):

    (storage_type, storage_key) = \

        storage._GetDefaultStorageUnitForDiskTemplate(self._cfg,

                                                      constants.DT_FILE)

    self.assertEqual(storage_type, constants.ST_FILE)

    self.assertEqual(storage_key, pathutils.DEFAULT_FILE_STORAGE_DIR)

  def testGetDefaultStorageUnitForDiskTemplateSharedFile(self):

    (storage_type, storage_key) = \

        storage._GetDefaultStorageUnitForDiskTemplate(self._cfg,

                                                      constants.DT_SHARED_FILE)

    self.assertEqual(storage_type, constants.ST_FILE)

    self.assertEqual(storage_key, pathutils.DEFAULT_SHARED_FILE_STORAGE_DIR)

  def testGetDefaultStorageUnitForDiskTemplateDiskless(self):

    (storage_type, storage_key) = \

        storage._GetDefaultStorageUnitForDiskTemplate(self._cfg,

                                                      constants.DT_DISKLESS)

    self.assertEqual(storage_type, constants.ST_DISKLESS)

    self.assertEqual(storage_key, None)

  def testGetDefaultStorageUnitForSpindles(self):

    (storage_type, storage_key) = \

        storage._GetDefaultStorageUnitForSpindles(self._cfg)

    self.assertEqual(storage_type, constants.ST_LVM_PV)

    self.assertEqual(storage_key, self._default_vg_name)

class TestGetStorageUnitsOfCluster(unittest.TestCase):

  def setUp(self):

    storage._GetDefaultStorageUnitForDiskTemplate = \

        mock.Mock(return_value=("foo", "bar"))

    self._cluster_cfg = objects.Cluster()

    self._enabled_disk_templates = \

        [constants.DT_DRBD8, constants.DT_PLAIN, constants.DT_FILE,

         constants.DT_SHARED_FILE]

    self._cluster_cfg.enabled_disk_templates = \

        self._enabled_disk_templates

    self._cfg = mock.Mock()

    self._cfg.GetClusterInfo = mock.Mock(return_value=self._cluster_cfg)

    self._cfg.GetVGName = mock.Mock(return_value="some_vg_name")

  def testGetStorageUnitsOfCluster(self):

    storage_units = storage.GetStorageUnitsOfCluster(self._cfg)

    self.assertEqual(len(storage_units), len(self._enabled_disk_templates))

  def testGetStorageUnitsOfClusterWithSpindles(self):

    storage_units = storage.GetStorageUnitsOfCluster(

        self._cfg, include_spindles=True)

    self.assertEqual(len(storage_units), len(self._enabled_disk_templates) + 1)

    self.assertTrue(constants.ST_LVM_PV in [st for (st, sk) in storage_units])

class TestLookupSpaceInfoByStorageType(unittest.TestCase):

  def setUp(self):

    self._space_info = [

        {"type": st, "name": st + "_key", "storage_size": 0, "storage_free": 0}

        for st in constants.VALID_STORAGE_TYPES]

  def testValidLookup(self):

    query_type = constants.ST_LVM_PV

    result = storage.LookupSpaceInfoByStorageType(self._space_info, query_type)

    self.assertEqual(query_type, result["type"])

  def testNotInList(self):

    result = storage.LookupSpaceInfoByStorageType(self._space_info,

                                                  "non_existing_type")

    self.assertEqual(None, result)

if __name__ == "__main__":

  testutils.GanetiTestProgram()