Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2006, 2007, 2008, 2010, 2012 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 objects module"""

import unittest

from ganeti import constants

from ganeti import objects

from ganeti import errors

import testutils

class SimpleObject(objects.ConfigObject):

  __slots__ = ["a", "b"]

class TestDictState(unittest.TestCase):

  """Simple dict tansformation tests"""

  def testSimpleObjectToDict(self):

    o1 = SimpleObject(a="1")

    self.assertEquals(o1.ToDict(), {"a": "1"})

    self.assertEquals(o1.__getstate__(), {"a": "1"})

    self.assertEquals(o1.__getstate__(), o1.ToDict())

    o1.a = 2

    o1.b = 5

    self.assertEquals(o1.ToDict(), {"a": 2, "b": 5})

    o2 = SimpleObject.FromDict(o1.ToDict())

    self.assertEquals(o1.ToDict(), {"a": 2, "b": 5})

class TestClusterObject(unittest.TestCase):

  """Tests done on a L{objects.Cluster}"""

  def setUp(self):

    hvparams = {

      constants.HT_FAKE: {

        "foo": "bar",

        "bar": "foo",

        "foobar": "barfoo",

        },

      }

    os_hvp = {

      "lenny-image": {

        constants.HT_FAKE: {

          "foo": "baz",

          "foobar": "foobar",

          "blah": "blibb",

          "blubb": "blah",

          },

        constants.HT_XEN_PVM: {

          "root_path": "/dev/sda5",

          "foo": "foobar",

          },

        },

      "ubuntu-hardy": {

        },

      }

    ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/cluster-oob",

        constants.ND_SPINDLE_COUNT: 1,

        constants.ND_EXCLUSIVE_STORAGE: False,

        }

    self.fake_cl = objects.Cluster(hvparams=hvparams, os_hvp=os_hvp,

                                   ndparams=ndparams)

    self.fake_cl.UpgradeConfig()

  def testGetHVDefaults(self):

    cl = self.fake_cl

    self.failUnlessEqual(cl.GetHVDefaults(constants.HT_FAKE),

                         cl.hvparams[constants.HT_FAKE])

    self.failUnlessEqual(cl.GetHVDefaults(None), {})

    self.failUnlessEqual(cl.GetHVDefaults(constants.HT_XEN_PVM,

                                          os_name="lenny-image"),

                         cl.os_hvp["lenny-image"][constants.HT_XEN_PVM])

  def testFillHvFullMerge(self):

    inst_hvparams = {

      "blah": "blubb",

      }

    fake_dict = {

      "foo": "baz",

      "bar": "foo",

      "foobar": "foobar",

      "blah": "blubb",

      "blubb": "blah",

      }

    fake_inst = objects.Instance(name="foobar",

                                 os="lenny-image",

                                 hypervisor=constants.HT_FAKE,

                                 hvparams=inst_hvparams)

    self.assertEqual(fake_dict, self.fake_cl.FillHV(fake_inst))

  def testFillHvGlobalParams(self):

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_FAKE,

                                 hvparams={})

    self.assertEqual(self.fake_cl.hvparams[constants.HT_FAKE],

                     self.fake_cl.FillHV(fake_inst))

  def testFillHvInstParams(self):

    inst_hvparams = {

      "blah": "blubb",

      }

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams=inst_hvparams)

    self.assertEqual(inst_hvparams, self.fake_cl.FillHV(fake_inst))

  def testFillHvEmptyParams(self):

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams={})

    self.assertEqual({}, self.fake_cl.FillHV(fake_inst))

  def testFillHvPartialParams(self):

    os = "lenny-image"

    fake_inst = objects.Instance(name="foobar",

                                 os=os,

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams={})

    self.assertEqual(self.fake_cl.os_hvp[os][constants.HT_XEN_PVM],

                     self.fake_cl.FillHV(fake_inst))

  def testFillNdParamsCluster(self):

    fake_node = objects.Node(name="test",

                             ndparams={},

                             group="testgroup")

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams={})

    self.assertEqual(self.fake_cl.ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsNodeGroup(self):

    fake_node = objects.Node(name="test",

                             ndparams={},

                             group="testgroup")

    group_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/group-oob",

        constants.ND_SPINDLE_COUNT: 10,

        constants.ND_EXCLUSIVE_STORAGE: True,

        }

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams=group_ndparams)

    self.assertEqual(group_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsNode(self):

    node_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/node-oob",

        constants.ND_SPINDLE_COUNT: 2,

        constants.ND_EXCLUSIVE_STORAGE: True,

        }

    fake_node = objects.Node(name="test",

                             ndparams=node_ndparams,

                             group="testgroup")

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams={})

    self.assertEqual(node_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsAll(self):

    node_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/node-oob",

        constants.ND_SPINDLE_COUNT: 5,

        constants.ND_EXCLUSIVE_STORAGE: True,

        }

    fake_node = objects.Node(name="test",

                             ndparams=node_ndparams,

                             group="testgroup")

    group_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/group-oob",

        constants.ND_SPINDLE_COUNT: 4,

        }

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams=group_ndparams)

    self.assertEqual(node_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testPrimaryHypervisor(self):

    assert self.fake_cl.enabled_hypervisors is None

    self.fake_cl.enabled_hypervisors = [constants.HT_XEN_HVM]

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_XEN_HVM)

    self.fake_cl.enabled_hypervisors = [constants.HT_XEN_PVM, constants.HT_KVM]

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_XEN_PVM)

    self.fake_cl.enabled_hypervisors = sorted(constants.HYPER_TYPES)

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_CHROOT)

class TestOS(unittest.TestCase):

  ALL_DATA = [

    "debootstrap",

    "debootstrap+default",

    "debootstrap++default",

    ]

  def testSplitNameVariant(self):

    for name in self.ALL_DATA:

      self.assertEqual(len(objects.OS.SplitNameVariant(name)), 2)

  def testVariant(self):

    self.assertEqual(objects.OS.GetVariant("debootstrap"), "")

    self.assertEqual(objects.OS.GetVariant("debootstrap+default"), "default")

class TestInstance(unittest.TestCase):

  def _GenericCheck(self, inst):

    for i in [inst.all_nodes, inst.secondary_nodes]:

      self.assertTrue(isinstance(inst.all_nodes, (list, tuple)),

                      msg="Data type doesn't guarantee order")

    self.assertTrue(inst.primary_node not in inst.secondary_nodes)

    self.assertEqual(inst.all_nodes[0], inst.primary_node,

                     msg="Primary node not first node in list")

  def testNodesNoDisks(self):

    inst = objects.Instance(name="fakeinst.example.com",

      primary_node="pnode.example.com",

      disks=[

        ])

    self._GenericCheck(inst)

    self.assertEqual(len(inst.secondary_nodes), 0)

    self.assertEqual(set(inst.all_nodes), set([inst.primary_node]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: [],

      })

  def testNodesPlainDisks(self):

    inst = objects.Instance(name="fakeinstplain.example.com",

      primary_node="node3.example.com",

      disks=[

        objects.Disk(dev_type=constants.LD_LV, size=128,

                     logical_id=("myxenvg", "disk25494")),

        objects.Disk(dev_type=constants.LD_LV, size=512,

                     logical_id=("myxenvg", "disk29071")),

        ])

    self._GenericCheck(inst)

    self.assertEqual(len(inst.secondary_nodes), 0)

    self.assertEqual(set(inst.all_nodes), set([inst.primary_node]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: ["myxenvg/disk25494", "myxenvg/disk29071"],

      })

  def testNodesDrbdDisks(self):

    inst = objects.Instance(name="fakeinstdrbd.example.com",

      primary_node="node10.example.com",

      disks=[

        objects.Disk(dev_type=constants.LD_DRBD8, size=786432,

          logical_id=("node10.example.com", "node15.example.com",

                      12300, 0, 0, "secret"),

          children=[

            objects.Disk(dev_type=constants.LD_LV, size=786432,

                         logical_id=("myxenvg", "disk0")),

            objects.Disk(dev_type=constants.LD_LV, size=128,

                         logical_id=("myxenvg", "meta0"))

          ],

          iv_name="disk/0")

        ])

    self._GenericCheck(inst)

    self.assertEqual(set(inst.secondary_nodes), set(["node15.example.com"]))

    self.assertEqual(set(inst.all_nodes),

                     set([inst.primary_node, "node15.example.com"]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: ["myxenvg/disk0", "myxenvg/meta0"],

      "node15.example.com": ["myxenvg/disk0", "myxenvg/meta0"],

      })

    self.assertEqual(inst.FindDisk(0), inst.disks[0])

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, "hello")

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, 100)

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, 1)

class TestNode(unittest.TestCase):

  def testEmpty(self):

    self.assertEqual(objects.Node().ToDict(), {})

    self.assertTrue(isinstance(objects.Node.FromDict({}), objects.Node))

  def testHvState(self):

    node = objects.Node(name="node18157.example.com", hv_state={

      constants.HT_XEN_HVM: objects.NodeHvState(cpu_total=64),

      constants.HT_KVM: objects.NodeHvState(cpu_node=1),

      })

    node2 = objects.Node.FromDict(node.ToDict())

    # Make sure nothing can reference it anymore

    del node

    self.assertEqual(node2.name, "node18157.example.com")

    self.assertEqual(frozenset(node2.hv_state), frozenset([

      constants.HT_XEN_HVM,

      constants.HT_KVM,

      ]))

    self.assertEqual(node2.hv_state[constants.HT_KVM].cpu_node, 1)

    self.assertEqual(node2.hv_state[constants.HT_XEN_HVM].cpu_total, 64)

  def testDiskState(self):

    node = objects.Node(name="node32087.example.com", disk_state={

      constants.LD_LV: {

        "lv32352": objects.NodeDiskState(total=128),

        "lv2082": objects.NodeDiskState(total=512),

        },

      })

    node2 = objects.Node.FromDict(node.ToDict())

    # Make sure nothing can reference it anymore

    del node

    self.assertEqual(node2.name, "node32087.example.com")

    self.assertEqual(frozenset(node2.disk_state), frozenset([

      constants.LD_LV,

      ]))

    self.assertEqual(frozenset(node2.disk_state[constants.LD_LV]), frozenset([

      "lv32352",

      "lv2082",

      ]))

    self.assertEqual(node2.disk_state[constants.LD_LV]["lv2082"].total, 512)

    self.assertEqual(node2.disk_state[constants.LD_LV]["lv32352"].total, 128)

if __name__ == "__main__":

  testutils.GanetiTestProgram()