Synnefo » snf-ganeti » ganeti-local

#!/usr/bin/python

#

# Copyright (C) 2011, 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.hypervisor.hv_lxc"""

import unittest

from ganeti import constants

from ganeti import objects

from ganeti import hypervisor

from ganeti import utils

from ganeti import errors

from ganeti import compat

from ganeti.hypervisor import hv_xen

import testutils

class TestConsole(unittest.TestCase):

  def test(self):

    for cls in [hv_xen.XenPvmHypervisor, hv_xen.XenHvmHypervisor]:

      instance = objects.Instance(name="xen.example.com",

                                  primary_node="node24828")

      cons = cls.GetInstanceConsole(instance, {}, {})

      self.assertTrue(cons.Validate())

      self.assertEqual(cons.kind, constants.CONS_SSH)

      self.assertEqual(cons.host, instance.primary_node)

      self.assertEqual(cons.command[-1], instance.name)

class TestCreateConfigCpus(unittest.TestCase):

  def testEmpty(self):

    for cpu_mask in [None, ""]:

      self.assertEqual(hv_xen._CreateConfigCpus(cpu_mask),

                       "cpus = [  ]")

  def testAll(self):

    self.assertEqual(hv_xen._CreateConfigCpus(constants.CPU_PINNING_ALL),

                     None)

  def testOne(self):

    self.assertEqual(hv_xen._CreateConfigCpus("9"), "cpu = \"9\"")

  def testMultiple(self):

    self.assertEqual(hv_xen._CreateConfigCpus("0-2,4,5-5:3:all"),

                     ("cpus = [ \"0,1,2,4,5\", \"3\", \"%s\" ]" %

                      constants.CPU_PINNING_ALL_XEN))

class TestParseXmList(testutils.GanetiTestCase):

  def test(self):

    data = testutils.ReadTestData("xen-xm-list-4.0.1-dom0-only.txt")

    # Exclude node

    self.assertEqual(hv_xen._ParseXmList(data.splitlines(), False), [])

    # Include node

    result = hv_xen._ParseXmList(data.splitlines(), True)

    self.assertEqual(len(result), 1)

    self.assertEqual(len(result[0]), 6)

    # Name

    self.assertEqual(result[0][0], hv_xen._DOM0_NAME)

    # ID

    self.assertEqual(result[0][1], 0)

    # Memory

    self.assertEqual(result[0][2], 1023)

    # VCPUs

    self.assertEqual(result[0][3], 1)

    # State

    self.assertEqual(result[0][4], "r-----")

    # Time

    self.assertAlmostEqual(result[0][5], 121152.6)

  def testWrongLineFormat(self):

    tests = [

      ["three fields only"],

      ["name InvalidID 128 1 r----- 12345"],

      ]

    for lines in tests:

      try:

        hv_xen._ParseXmList(["Header would be here"] + lines, False)

      except errors.HypervisorError, err:

        self.assertTrue("Can't parse output of xm list" in str(err))

      else:

        self.fail("Exception was not raised")

class TestGetXmList(testutils.GanetiTestCase):

  def _Fail(self):

    return utils.RunResult(constants.EXIT_FAILURE, None,

                           "stdout", "stderr", None,

                           NotImplemented, NotImplemented)

  def testTimeout(self):

    fn = testutils.CallCounter(self._Fail)

    try:

      hv_xen._GetXmList(fn, False, _timeout=0.1)

    except errors.HypervisorError, err:

      self.assertTrue("timeout exceeded" in str(err))

    else:

      self.fail("Exception was not raised")

    self.assertTrue(fn.Count() < 10,

                    msg="'xm list' was called too many times")

  def _Success(self, stdout):

    return utils.RunResult(constants.EXIT_SUCCESS, None, stdout, "", None,

                           NotImplemented, NotImplemented)

  def testSuccess(self):

    data = testutils.ReadTestData("xen-xm-list-4.0.1-four-instances.txt")

    fn = testutils.CallCounter(compat.partial(self._Success, data))

    result = hv_xen._GetXmList(fn, True, _timeout=0.1)

    self.assertEqual(len(result), 4)

    self.assertEqual(map(compat.fst, result), [

      "Domain-0",

      "server01.example.com",

      "web3106215069.example.com",

      "testinstance.example.com",

      ])

    self.assertEqual(fn.Count(), 1)

class TestParseNodeInfo(testutils.GanetiTestCase):

  def testEmpty(self):

    self.assertEqual(hv_xen._ParseNodeInfo(""), {})

  def testUnknownInput(self):

    data = "\n".join([

      "foo bar",

      "something else goes",

      "here",

      ])

    self.assertEqual(hv_xen._ParseNodeInfo(data), {})

  def testBasicInfo(self):

    data = testutils.ReadTestData("xen-xm-info-4.0.1.txt")

    result = hv_xen._ParseNodeInfo(data)

    self.assertEqual(result, {

      "cpu_nodes": 1,

      "cpu_sockets": 2,

      "cpu_total": 4,

      "hv_version": (4, 0),

      "memory_free": 8004,

      "memory_total": 16378,

      })

class TestMergeInstanceInfo(testutils.GanetiTestCase):

  def testEmpty(self):

    self.assertEqual(hv_xen._MergeInstanceInfo({}, lambda _: []), {})

  def _FakeXmList(self, include_node):

    self.assertTrue(include_node)

    return [

      (hv_xen._DOM0_NAME, NotImplemented, 4096, 7, NotImplemented,

       NotImplemented),

      ("inst1.example.com", NotImplemented, 2048, 4, NotImplemented,

       NotImplemented),

      ]

  def testMissingNodeInfo(self):

    result = hv_xen._MergeInstanceInfo({}, self._FakeXmList)

    self.assertEqual(result, {

      "memory_dom0": 4096,

      "dom0_cpus": 7,

      })

  def testWithNodeInfo(self):

    info = testutils.ReadTestData("xen-xm-info-4.0.1.txt")

    result = hv_xen._GetNodeInfo(info, self._FakeXmList)

    self.assertEqual(result, {

      "cpu_nodes": 1,

      "cpu_sockets": 2,

      "cpu_total": 4,

      "dom0_cpus": 7,

      "hv_version": (4, 0),

      "memory_dom0": 4096,

      "memory_free": 8004,

      "memory_hv": 2230,

      "memory_total": 16378,

      })

if __name__ == "__main__":

  testutils.GanetiTestProgram()