root / test / py / ganeti.hypervisor.hv_xen_unittest.py @ 2edc1c79
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#!/usr/bin/python
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#
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# Copyright (C) 2011, 2013 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for testing ganeti.hypervisor.hv_lxc"""
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import string # pylint: disable=W0402 |
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import unittest |
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import tempfile |
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import shutil |
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import random |
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import os |
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from ganeti import constants |
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from ganeti import objects |
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from ganeti import hypervisor |
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from ganeti import utils |
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from ganeti import errors |
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from ganeti import compat |
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from ganeti.hypervisor import hv_xen |
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import testutils |
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# Map from hypervisor class to hypervisor name
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HVCLASS_TO_HVNAME = utils.InvertDict(hypervisor._HYPERVISOR_MAP) |
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class TestConsole(unittest.TestCase): |
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def test(self): |
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for cls in [hv_xen.XenPvmHypervisor, hv_xen.XenHvmHypervisor]: |
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instance = objects.Instance(name="xen.example.com",
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primary_node="node24828")
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cons = cls.GetInstanceConsole(instance, {}, {})
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self.assertTrue(cons.Validate())
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self.assertEqual(cons.kind, constants.CONS_SSH)
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self.assertEqual(cons.host, instance.primary_node)
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self.assertEqual(cons.command[-1], instance.name) |
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class TestCreateConfigCpus(unittest.TestCase): |
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def testEmpty(self): |
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for cpu_mask in [None, ""]: |
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self.assertEqual(hv_xen._CreateConfigCpus(cpu_mask),
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"cpus = [ ]")
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def testAll(self): |
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self.assertEqual(hv_xen._CreateConfigCpus(constants.CPU_PINNING_ALL),
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None)
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def testOne(self): |
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self.assertEqual(hv_xen._CreateConfigCpus("9"), "cpu = \"9\"") |
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def testMultiple(self): |
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self.assertEqual(hv_xen._CreateConfigCpus("0-2,4,5-5:3:all"), |
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("cpus = [ \"0,1,2,4,5\", \"3\", \"%s\" ]" %
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constants.CPU_PINNING_ALL_XEN)) |
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class TestParseXmList(testutils.GanetiTestCase): |
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def test(self): |
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data = testutils.ReadTestData("xen-xm-list-4.0.1-dom0-only.txt")
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# Exclude node
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self.assertEqual(hv_xen._ParseXmList(data.splitlines(), False), []) |
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# Include node
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result = hv_xen._ParseXmList(data.splitlines(), True)
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self.assertEqual(len(result), 1) |
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self.assertEqual(len(result[0]), 6) |
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# Name
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self.assertEqual(result[0][0], hv_xen._DOM0_NAME) |
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# ID
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self.assertEqual(result[0][1], 0) |
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# Memory
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self.assertEqual(result[0][2], 1023) |
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# VCPUs
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self.assertEqual(result[0][3], 1) |
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# State
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self.assertEqual(result[0][4], "r-----") |
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# Time
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self.assertAlmostEqual(result[0][5], 121152.6) |
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def testWrongLineFormat(self): |
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tests = [ |
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["three fields only"],
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["name InvalidID 128 1 r----- 12345"],
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] |
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for lines in tests: |
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try:
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hv_xen._ParseXmList(["Header would be here"] + lines, False) |
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except errors.HypervisorError, err:
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self.assertTrue("Can't parse output of xm list" in str(err)) |
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else:
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self.fail("Exception was not raised") |
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class TestGetXmList(testutils.GanetiTestCase): |
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def _Fail(self): |
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return utils.RunResult(constants.EXIT_FAILURE, None, |
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"stdout", "stderr", None, |
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NotImplemented, NotImplemented) |
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def testTimeout(self): |
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fn = testutils.CallCounter(self._Fail)
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try:
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hv_xen._GetXmList(fn, False, _timeout=0.1) |
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except errors.HypervisorError, err:
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self.assertTrue("timeout exceeded" in str(err)) |
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else:
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self.fail("Exception was not raised") |
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self.assertTrue(fn.Count() < 10, |
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msg="'xm list' was called too many times")
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def _Success(self, stdout): |
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return utils.RunResult(constants.EXIT_SUCCESS, None, stdout, "", None, |
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NotImplemented, NotImplemented) |
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def testSuccess(self): |
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data = testutils.ReadTestData("xen-xm-list-4.0.1-four-instances.txt")
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fn = testutils.CallCounter(compat.partial(self._Success, data))
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result = hv_xen._GetXmList(fn, True, _timeout=0.1) |
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self.assertEqual(len(result), 4) |
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self.assertEqual(map(compat.fst, result), [ |
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"Domain-0",
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"server01.example.com",
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"web3106215069.example.com",
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"testinstance.example.com",
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]) |
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self.assertEqual(fn.Count(), 1) |
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class TestParseNodeInfo(testutils.GanetiTestCase): |
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def testEmpty(self): |
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self.assertEqual(hv_xen._ParseNodeInfo(""), {}) |
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def testUnknownInput(self): |
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data = "\n".join([
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"foo bar",
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"something else goes",
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"here",
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]) |
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self.assertEqual(hv_xen._ParseNodeInfo(data), {})
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def testBasicInfo(self): |
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data = testutils.ReadTestData("xen-xm-info-4.0.1.txt")
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result = hv_xen._ParseNodeInfo(data) |
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self.assertEqual(result, {
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"cpu_nodes": 1, |
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"cpu_sockets": 2, |
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"cpu_total": 4, |
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"hv_version": (4, 0), |
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"memory_free": 8004, |
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"memory_total": 16378, |
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}) |
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class TestMergeInstanceInfo(testutils.GanetiTestCase): |
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def testEmpty(self): |
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self.assertEqual(hv_xen._MergeInstanceInfo({}, lambda _: []), {}) |
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def _FakeXmList(self, include_node): |
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self.assertTrue(include_node)
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return [
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(hv_xen._DOM0_NAME, NotImplemented, 4096, 7, NotImplemented, |
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NotImplemented),
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("inst1.example.com", NotImplemented, 2048, 4, NotImplemented, |
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NotImplemented),
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] |
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def testMissingNodeInfo(self): |
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result = hv_xen._MergeInstanceInfo({}, self._FakeXmList)
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self.assertEqual(result, {
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"memory_dom0": 4096, |
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"dom0_cpus": 7, |
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}) |
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def testWithNodeInfo(self): |
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info = testutils.ReadTestData("xen-xm-info-4.0.1.txt")
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result = hv_xen._GetNodeInfo(info, self._FakeXmList)
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self.assertEqual(result, {
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"cpu_nodes": 1, |
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"cpu_sockets": 2, |
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"cpu_total": 4, |
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"dom0_cpus": 7, |
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"hv_version": (4, 0), |
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"memory_dom0": 4096, |
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"memory_free": 8004, |
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"memory_hv": 2230, |
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"memory_total": 16378, |
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}) |
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class TestGetConfigFileDiskData(unittest.TestCase): |
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def testLetterCount(self): |
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self.assertEqual(len(hv_xen._DISK_LETTERS), 26) |
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def testNoDisks(self): |
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self.assertEqual(hv_xen._GetConfigFileDiskData([], "hd"), []) |
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def testManyDisks(self): |
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for offset in [0, 1, 10]: |
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disks = [(objects.Disk(dev_type=constants.LD_LV), "/tmp/disk/%s" % idx)
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for idx in range(len(hv_xen._DISK_LETTERS) + offset)] |
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if offset == 0: |
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result = hv_xen._GetConfigFileDiskData(disks, "hd")
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self.assertEqual(result, [
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"'phy:/tmp/disk/%s,hd%s,r'" % (idx, string.ascii_lowercase[idx])
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for idx in range(len(hv_xen._DISK_LETTERS) + offset) |
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]) |
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else:
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try:
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hv_xen._GetConfigFileDiskData(disks, "hd")
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except errors.HypervisorError, err:
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self.assertEqual(str(err), "Too many disks") |
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else:
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self.fail("Exception was not raised") |
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def testTwoLvDisksWithMode(self): |
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disks = [ |
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(objects.Disk(dev_type=constants.LD_LV, mode=constants.DISK_RDWR), |
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"/tmp/diskFirst"),
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(objects.Disk(dev_type=constants.LD_LV, mode=constants.DISK_RDONLY), |
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"/tmp/diskLast"),
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] |
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result = hv_xen._GetConfigFileDiskData(disks, "hd")
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self.assertEqual(result, [
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"'phy:/tmp/diskFirst,hda,w'",
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"'phy:/tmp/diskLast,hdb,r'",
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]) |
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def testFileDisks(self): |
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disks = [ |
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(objects.Disk(dev_type=constants.LD_FILE, mode=constants.DISK_RDWR, |
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physical_id=[constants.FD_LOOP]), |
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"/tmp/diskFirst"),
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(objects.Disk(dev_type=constants.LD_FILE, mode=constants.DISK_RDONLY, |
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physical_id=[constants.FD_BLKTAP]), |
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"/tmp/diskTwo"),
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(objects.Disk(dev_type=constants.LD_FILE, mode=constants.DISK_RDWR, |
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physical_id=[constants.FD_LOOP]), |
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"/tmp/diskThree"),
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(objects.Disk(dev_type=constants.LD_FILE, mode=constants.DISK_RDWR, |
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physical_id=[constants.FD_BLKTAP]), |
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"/tmp/diskLast"),
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] |
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result = hv_xen._GetConfigFileDiskData(disks, "sd")
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self.assertEqual(result, [
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"'file:/tmp/diskFirst,sda,w'",
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"'tap:aio:/tmp/diskTwo,sdb,r'",
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"'file:/tmp/diskThree,sdc,w'",
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"'tap:aio:/tmp/diskLast,sdd,w'",
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]) |
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def testInvalidFileDisk(self): |
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disks = [ |
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(objects.Disk(dev_type=constants.LD_FILE, mode=constants.DISK_RDWR, |
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physical_id=["#unknown#"]),
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"/tmp/diskinvalid"),
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] |
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self.assertRaises(KeyError, hv_xen._GetConfigFileDiskData, disks, "sd") |
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class TestXenHypervisorUnknownCommand(unittest.TestCase): |
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def test(self): |
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cmd = "#unknown command#"
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self.assertFalse(cmd in constants.KNOWN_XEN_COMMANDS) |
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hv = hv_xen.XenHypervisor(_cfgdir=NotImplemented,
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_run_cmd_fn=NotImplemented,
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_cmd=cmd) |
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self.assertRaises(errors.ProgrammerError, hv._RunXen, [])
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class TestXenHypervisorWriteConfigFile(unittest.TestCase): |
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def setUp(self): |
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self.tmpdir = tempfile.mkdtemp()
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def tearDown(self): |
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shutil.rmtree(self.tmpdir)
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def testWriteError(self): |
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cfgdir = utils.PathJoin(self.tmpdir, "foobar") |
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hv = hv_xen.XenHypervisor(_cfgdir=cfgdir, |
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_run_cmd_fn=NotImplemented,
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_cmd=NotImplemented)
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self.assertFalse(os.path.exists(cfgdir))
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try:
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hv._WriteConfigFile("name", "data") |
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except errors.HypervisorError, err:
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self.assertTrue(str(err).startswith("Cannot write Xen instance")) |
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else:
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self.fail("Exception was not raised") |
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class _TestXenHypervisor(object): |
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TARGET = NotImplemented
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CMD = NotImplemented
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HVNAME = NotImplemented
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def setUp(self): |
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super(_TestXenHypervisor, self).setUp() |
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self.tmpdir = tempfile.mkdtemp()
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self.vncpw = "".join(random.sample(string.ascii_letters, 10)) |
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self.vncpw_path = utils.PathJoin(self.tmpdir, "vncpw") |
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utils.WriteFile(self.vncpw_path, data=self.vncpw) |
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def tearDown(self): |
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super(_TestXenHypervisor, self).tearDown() |
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shutil.rmtree(self.tmpdir)
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def _GetHv(self, run_cmd=NotImplemented): |
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return self.TARGET(_cfgdir=self.tmpdir, _run_cmd_fn=run_cmd, _cmd=self.CMD) |
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def _SuccessCommand(self, stdout, cmd): |
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self.assertEqual(cmd[0], self.CMD) |
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return utils.RunResult(constants.EXIT_SUCCESS, None, stdout, "", None, |
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NotImplemented, NotImplemented) |
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def _FailingCommand(self, cmd): |
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self.assertEqual(cmd[0], self.CMD) |
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return utils.RunResult(constants.EXIT_FAILURE, None, |
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"", "This command failed", None, |
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NotImplemented, NotImplemented) |
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def testReadingNonExistentConfigFile(self): |
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hv = self._GetHv()
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try:
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hv._ReadConfigFile("inst15780.example.com")
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except errors.HypervisorError, err:
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self.assertTrue(str(err).startswith("Failed to load Xen config file:")) |
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else:
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self.fail("Exception was not raised") |
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def testRemovingAutoConfigFile(self): |
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name = "inst8206.example.com"
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cfgfile = utils.PathJoin(self.tmpdir, name)
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autodir = utils.PathJoin(self.tmpdir, "auto") |
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autocfgfile = utils.PathJoin(autodir, name) |
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os.mkdir(autodir) |
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utils.WriteFile(autocfgfile, data="")
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hv = self._GetHv()
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self.assertTrue(os.path.isfile(autocfgfile))
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hv._WriteConfigFile(name, "content")
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self.assertFalse(os.path.exists(autocfgfile))
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self.assertEqual(utils.ReadFile(cfgfile), "content") |
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def _XenList(self, cmd): |
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self.assertEqual(cmd, [self.CMD, "list"]) |
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# TODO: Use actual data from "xl" command
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output = testutils.ReadTestData("xen-xm-list-4.0.1-four-instances.txt")
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return self._SuccessCommand(output, cmd) |
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def testGetInstanceInfo(self): |
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hv = self._GetHv(run_cmd=self._XenList) |
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(name, instid, memory, vcpus, state, runtime) = \ |
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hv.GetInstanceInfo("server01.example.com")
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self.assertEqual(name, "server01.example.com") |
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self.assertEqual(instid, 1) |
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self.assertEqual(memory, 1024) |
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self.assertEqual(vcpus, 1) |
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self.assertEqual(state, "-b----") |
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self.assertAlmostEqual(runtime, 167643.2) |
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def testGetInstanceInfoDom0(self): |
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hv = self._GetHv(run_cmd=self._XenList) |
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# TODO: Not sure if this is actually used anywhere (can't find it), but the
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# code supports querying for Dom0
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(name, instid, memory, vcpus, state, runtime) = \ |
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hv.GetInstanceInfo(hv_xen._DOM0_NAME) |
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self.assertEqual(name, "Domain-0") |
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self.assertEqual(instid, 0) |
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self.assertEqual(memory, 1023) |
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self.assertEqual(vcpus, 1) |
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self.assertEqual(state, "r-----") |
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self.assertAlmostEqual(runtime, 154706.1) |
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def testGetInstanceInfoUnknown(self): |
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hv = self._GetHv(run_cmd=self._XenList) |
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result = hv.GetInstanceInfo("unknown.example.com")
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self.assertTrue(result is None) |
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def testGetAllInstancesInfo(self): |
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hv = self._GetHv(run_cmd=self._XenList) |
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result = hv.GetAllInstancesInfo() |
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self.assertEqual(map(compat.fst, result), [ |
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"server01.example.com",
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"web3106215069.example.com",
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"testinstance.example.com",
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]) |
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def testListInstances(self): |
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hv = self._GetHv(run_cmd=self._XenList) |
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self.assertEqual(hv.ListInstances(), [
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"server01.example.com",
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"web3106215069.example.com",
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"testinstance.example.com",
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]) |
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def testVerify(self): |
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output = testutils.ReadTestData("xen-xm-info-4.0.1.txt")
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hv = self._GetHv(run_cmd=compat.partial(self._SuccessCommand, |
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output)) |
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self.assertTrue(hv.Verify() is None) |
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|
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def testVerifyFailing(self): |
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hv = self._GetHv(run_cmd=self._FailingCommand) |
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self.assertTrue("failed:" in hv.Verify()) |
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def _StartInstanceCommand(self, inst, paused, failcreate, cmd): |
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if cmd == [self.CMD, "info"]: |
| 470 |
output = testutils.ReadTestData("xen-xm-info-4.0.1.txt")
|
| 471 |
elif cmd == [self.CMD, "list"]: |
| 472 |
output = testutils.ReadTestData("xen-xm-list-4.0.1-dom0-only.txt")
|
| 473 |
elif cmd[:2] == [self.CMD, "create"]: |
| 474 |
args = cmd[2:]
|
| 475 |
cfgfile = utils.PathJoin(self.tmpdir, inst.name)
|
| 476 |
|
| 477 |
if paused:
|
| 478 |
self.assertEqual(args, ["-p", cfgfile]) |
| 479 |
else:
|
| 480 |
self.assertEqual(args, [cfgfile])
|
| 481 |
|
| 482 |
if failcreate:
|
| 483 |
return self._FailingCommand(cmd) |
| 484 |
|
| 485 |
output = ""
|
| 486 |
else:
|
| 487 |
self.fail("Unhandled command: %s" % (cmd, )) |
| 488 |
|
| 489 |
return self._SuccessCommand(output, cmd) |
| 490 |
#return self._FailingCommand(cmd)
|
| 491 |
|
| 492 |
def _MakeInstance(self): |
| 493 |
# Copy default parameters
|
| 494 |
bep = objects.FillDict(constants.BEC_DEFAULTS, {})
|
| 495 |
hvp = objects.FillDict(constants.HVC_DEFAULTS[self.HVNAME], {})
|
| 496 |
|
| 497 |
# Override default VNC password file path
|
| 498 |
if constants.HV_VNC_PASSWORD_FILE in hvp: |
| 499 |
hvp[constants.HV_VNC_PASSWORD_FILE] = self.vncpw_path
|
| 500 |
|
| 501 |
disks = [ |
| 502 |
(objects.Disk(dev_type=constants.LD_LV, mode=constants.DISK_RDWR), |
| 503 |
utils.PathJoin(self.tmpdir, "disk0")), |
| 504 |
(objects.Disk(dev_type=constants.LD_LV, mode=constants.DISK_RDONLY), |
| 505 |
utils.PathJoin(self.tmpdir, "disk1")), |
| 506 |
] |
| 507 |
|
| 508 |
inst = objects.Instance(name="server01.example.com",
|
| 509 |
hvparams=hvp, beparams=bep, |
| 510 |
osparams={}, nics=[], os="deb1",
|
| 511 |
disks=map(compat.fst, disks))
|
| 512 |
inst.UpgradeConfig() |
| 513 |
|
| 514 |
return (inst, disks)
|
| 515 |
|
| 516 |
def testStartInstance(self): |
| 517 |
(inst, disks) = self._MakeInstance()
|
| 518 |
|
| 519 |
for failcreate in [False, True]: |
| 520 |
for paused in [False, True]: |
| 521 |
run_cmd = compat.partial(self._StartInstanceCommand,
|
| 522 |
inst, paused, failcreate) |
| 523 |
|
| 524 |
hv = self._GetHv(run_cmd=run_cmd)
|
| 525 |
|
| 526 |
# Ensure instance is not listed
|
| 527 |
self.assertTrue(inst.name not in hv.ListInstances()) |
| 528 |
|
| 529 |
# Remove configuration
|
| 530 |
cfgfile = utils.PathJoin(self.tmpdir, inst.name)
|
| 531 |
utils.RemoveFile(cfgfile) |
| 532 |
|
| 533 |
if failcreate:
|
| 534 |
self.assertRaises(errors.HypervisorError, hv.StartInstance,
|
| 535 |
inst, disks, paused) |
| 536 |
else:
|
| 537 |
hv.StartInstance(inst, disks, paused) |
| 538 |
|
| 539 |
# Check if configuration was updated
|
| 540 |
lines = utils.ReadFile(cfgfile).splitlines() |
| 541 |
|
| 542 |
if constants.HV_VNC_PASSWORD_FILE in inst.hvparams: |
| 543 |
self.assertTrue(("vncpasswd = '%s'" % self.vncpw) in lines) |
| 544 |
else:
|
| 545 |
extra = inst.hvparams[constants.HV_KERNEL_ARGS] |
| 546 |
self.assertTrue(("extra = '%s'" % extra) in lines) |
| 547 |
|
| 548 |
def _StopInstanceCommand(self, instance_name, force, fail, cmd): |
| 549 |
if ((force and cmd[:2] == [self.CMD, "destroy"]) or |
| 550 |
(not force and cmd[:2] == [self.CMD, "shutdown"])): |
| 551 |
self.assertEqual(cmd[2:], [instance_name]) |
| 552 |
output = ""
|
| 553 |
else:
|
| 554 |
self.fail("Unhandled command: %s" % (cmd, )) |
| 555 |
|
| 556 |
if fail:
|
| 557 |
# Simulate a failing command
|
| 558 |
return self._FailingCommand(cmd) |
| 559 |
else:
|
| 560 |
return self._SuccessCommand(output, cmd) |
| 561 |
|
| 562 |
def testStopInstance(self): |
| 563 |
name = "inst4284.example.com"
|
| 564 |
cfgfile = utils.PathJoin(self.tmpdir, name)
|
| 565 |
cfgdata = "config file content\n"
|
| 566 |
|
| 567 |
for force in [False, True]: |
| 568 |
for fail in [False, True]: |
| 569 |
utils.WriteFile(cfgfile, data=cfgdata) |
| 570 |
|
| 571 |
run_cmd = compat.partial(self._StopInstanceCommand, name, force, fail)
|
| 572 |
|
| 573 |
hv = self._GetHv(run_cmd=run_cmd)
|
| 574 |
|
| 575 |
self.assertTrue(os.path.isfile(cfgfile))
|
| 576 |
|
| 577 |
if fail:
|
| 578 |
try:
|
| 579 |
hv._StopInstance(name, force) |
| 580 |
except errors.HypervisorError, err:
|
| 581 |
self.assertTrue(str(err).startswith("Failed to stop instance")) |
| 582 |
else:
|
| 583 |
self.fail("Exception was not raised") |
| 584 |
self.assertEqual(utils.ReadFile(cfgfile), cfgdata,
|
| 585 |
msg=("Configuration was removed when stopping"
|
| 586 |
" instance failed"))
|
| 587 |
else:
|
| 588 |
hv._StopInstance(name, force) |
| 589 |
self.assertFalse(os.path.exists(cfgfile))
|
| 590 |
|
| 591 |
|
| 592 |
def _MakeTestClass(cls, cmd): |
| 593 |
"""Makes a class for testing.
|
| 594 |
|
| 595 |
The returned class has structure as shown in the following pseudo code:
|
| 596 |
|
| 597 |
class Test{cls.__name__}{cmd}(_TestXenHypervisor, unittest.TestCase):
|
| 598 |
TARGET = {cls}
|
| 599 |
CMD = {cmd}
|
| 600 |
HVNAME = {Hypervisor name retrieved using class}
|
| 601 |
|
| 602 |
@type cls: class
|
| 603 |
@param cls: Hypervisor class to be tested
|
| 604 |
@type cmd: string
|
| 605 |
@param cmd: Hypervisor command
|
| 606 |
@rtype: tuple
|
| 607 |
@return: Class name and class object (not instance)
|
| 608 |
|
| 609 |
"""
|
| 610 |
name = "Test%sCmd%s" % (cls.__name__, cmd.title())
|
| 611 |
bases = (_TestXenHypervisor, unittest.TestCase) |
| 612 |
hvname = HVCLASS_TO_HVNAME[cls] |
| 613 |
|
| 614 |
return (name, type(name, bases, dict(TARGET=cls, CMD=cmd, HVNAME=hvname))) |
| 615 |
|
| 616 |
|
| 617 |
# Create test classes programmatically instead of manually to reduce the risk
|
| 618 |
# of forgetting some combinations
|
| 619 |
for cls in [hv_xen.XenPvmHypervisor, hv_xen.XenHvmHypervisor]: |
| 620 |
for cmd in constants.KNOWN_XEN_COMMANDS: |
| 621 |
(name, testcls) = _MakeTestClass(cls, cmd) |
| 622 |
|
| 623 |
assert name not in locals() |
| 624 |
|
| 625 |
locals()[name] = testcls
|
| 626 |
|
| 627 |
|
| 628 |
if __name__ == "__main__": |
| 629 |
testutils.GanetiTestProgram() |