Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 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 testing ganeti.masterd.iallocator"""

import unittest

from ganeti import compat

from ganeti import constants

from ganeti import errors

from ganeti import objects

from ganeti import ht

from ganeti.masterd import iallocator

import testutils

class _StubIAllocator(object):

  def __init__(self, success):

    self.success = success

class TestIAReqMultiInstanceAlloc(unittest.TestCase):

  def testResult(self):

    good_results = [

      # First result (all instances "allocate")

      [

        [["foo", ["a", "b"]],

         ["bar", ["c"]],

         ["baz", []]],

        []

      ],

      # Second result (partial "allocate", partial "fail")

      [

        [["bar", ["c", "b"]],

         ["baz", ["a"]]],

        ["foo"]

      ],

      # Third result (all instances "fail")

      [

        [],

        ["foo", "bar", "baz"]

      ],

      ]

    bad_results = [

      "foobar",

      1234,

      [],

      [[]],

      [[], [], []],

      ]

    result_fn = iallocator.IAReqMultiInstanceAlloc.REQ_RESULT

    self.assertTrue(compat.all(map(result_fn, good_results)))

    self.assertFalse(compat.any(map(result_fn, bad_results)))

class TestIARequestBase(unittest.TestCase):

  def testValidateResult(self):

    class _StubReqBase(iallocator.IARequestBase):

      MODE = constants.IALLOCATOR_MODE_ALLOC

      REQ_RESULT = ht.TBool

    stub = _StubReqBase()

    stub.ValidateResult(_StubIAllocator(True), True)

    self.assertRaises(errors.ResultValidationError, stub.ValidateResult,

                      _StubIAllocator(True), "foo")

    stub.ValidateResult(_StubIAllocator(False), True)

    # We don't validate the result if the iallocation request was not successful

    stub.ValidateResult(_StubIAllocator(False), "foo")

class _FakeConfigWithNdParams:

  def GetNdParams(self, _):

    return None

class TestComputeBasicNodeData(unittest.TestCase):

  def setUp(self):

    self.fn = compat.partial(iallocator.IAllocator._ComputeBasicNodeData,

                             _FakeConfigWithNdParams())

  def testEmpty(self):

    self.assertEqual(self.fn({}, None), {})

  def testSimple(self):

    node1 = objects.Node(name="node1",

                         primary_ip="192.0.2.1",

                         secondary_ip="192.0.2.2",

                         offline=False,

                         drained=False,

                         master_candidate=True,

                         master_capable=True,

                         group="11112222",

                         vm_capable=False)

    node2 = objects.Node(name="node2",

                         primary_ip="192.0.2.3",

                         secondary_ip="192.0.2.4",

                         offline=True,

                         drained=False,

                         master_candidate=False,

                         master_capable=False,

                         group="11112222",

                         vm_capable=True)

    assert node1 != node2

    ninfo = {

      "#unused-1#": node1,

      "#unused-2#": node2,

      }

    self.assertEqual(self.fn(ninfo, None), {

      "node1": {

        "tags": [],

        "primary_ip": "192.0.2.1",

        "secondary_ip": "192.0.2.2",

        "offline": False,

        "drained": False,

        "master_candidate": True,

        "group": "11112222",

        "master_capable": True,

        "vm_capable": False,

        "ndparams": None,

        },

      "node2": {

        "tags": [],

        "primary_ip": "192.0.2.3",

        "secondary_ip": "192.0.2.4",

        "offline": True,

        "drained": False,

        "master_candidate": False,

        "group": "11112222",

        "master_capable": False,

        "vm_capable": True,

        "ndparams": None,

        },

      })

  def testOfflineNode(self):

    for whitelist in [None, [], set(), ["node1"], ["node2"]]:

      result = self.fn({

        "node1": objects.Node(name="node1", offline=True)

        }, whitelist)

      self.assertEqual(len(result), 1)

      self.assertTrue(result["node1"]["offline"])

  def testWhitelist(self):

    for whitelist in [None, [], set(), ["node1"], ["node2"]]:

      result = self.fn({

        "node1": objects.Node(name="node1", offline=False)

        }, whitelist)

      self.assertEqual(len(result), 1)

      if whitelist is None or "node1" in whitelist:

        self.assertFalse(result["node1"]["offline"])

      else:

        self.assertTrue(result["node1"]["offline"])

class TestProcessStorageInfo(unittest.TestCase):

  def setUp(self):

    self.free_storage_file = 23

    self.total_storage_file = 42

    self.free_storage_lvm = 69

    self.total_storage_lvm = 666

    self.space_info = [{"name": "mynode",

                       "type": constants.ST_FILE,

                       "storage_free": self.free_storage_file,

                       "storage_size": self.total_storage_file},

                      {"name": "mynode",

                       "type": constants.ST_LVM_VG,

                       "storage_free": self.free_storage_lvm,

                       "storage_size": self.total_storage_lvm},

                      {"name": "mynode",

                       "type": constants.ST_LVM_PV,

                       "storage_free": 33,

                       "storage_size": 44}]

  def testComputeStorageDataFromNodeInfoDefault(self):

    has_lvm = False

    node_name = "mynode"

    (total_disk, free_disk, total_spindles, free_spindles) = \

        iallocator.IAllocator._ComputeStorageDataFromSpaceInfo(

            self.space_info, node_name, has_lvm)

    # FIXME: right now, iallocator ignores anything else than LVM, adjust

    # this test once that arbitrary storage is supported

    self.assertEqual(0, free_disk)

    self.assertEqual(0, total_disk)

  def testComputeStorageDataFromNodeInfoLvm(self):

    has_lvm = True

    node_name = "mynode"

    (total_disk, free_disk, total_spindles, free_spindles) = \

        iallocator.IAllocator._ComputeStorageDataFromSpaceInfo(

            self.space_info, node_name, has_lvm)

    self.assertEqual(self.free_storage_lvm, free_disk)

    self.assertEqual(self.total_storage_lvm, total_disk)

  def testComputeStorageDataFromSpaceInfoByTemplate(self):

    disk_template = constants.DT_FILE

    node_name = "mynode"

    (total_disk, free_disk, total_spindles, free_spindles) = \

        iallocator.IAllocator._ComputeStorageDataFromSpaceInfoByTemplate(

            self.space_info, node_name, disk_template)

    self.assertEqual(self.free_storage_file, free_disk)

    self.assertEqual(self.total_storage_file, total_disk)

  def testComputeStorageDataFromSpaceInfoByTemplateLvm(self):

    disk_template = constants.DT_PLAIN

    node_name = "mynode"

    (total_disk, free_disk, total_spindles, free_spindles) = \

        iallocator.IAllocator._ComputeStorageDataFromSpaceInfoByTemplate(

            self.space_info, node_name, disk_template)

    self.assertEqual(self.free_storage_lvm, free_disk)

    self.assertEqual(self.total_storage_lvm, total_disk)

  def testComputeStorageDataFromSpaceInfoByTemplateNoReport(self):

    disk_template = constants.DT_DISKLESS

    node_name = "mynode"

    (total_disk, free_disk, total_spindles, free_spindles) = \

        iallocator.IAllocator._ComputeStorageDataFromSpaceInfoByTemplate(

            self.space_info, node_name, disk_template)

    self.assertEqual(0, free_disk)

    self.assertEqual(0, total_disk)

if __name__ == "__main__":

  testutils.GanetiTestProgram()