Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2011 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.client.gnt_cluster"""

import unittest

import optparse

from ganeti import errors

from ganeti.client import gnt_cluster

from ganeti import utils

from ganeti import compat

from ganeti import constants

import mock

import testutils

class TestEpoUtilities(unittest.TestCase):

  def setUp(self):

    self.nodes2ip = dict(("node%s" % i, "192.0.2.%s" % i) for i in range(1, 10))

    self.nodes = set(self.nodes2ip.keys())

    self.ips2node = dict((v, k) for (k, v) in self.nodes2ip.items())

  def _FakeAction(*args):

    return True

  def _FakePing(ip, port, live_port_needed=False):

    self.assert_(live_port_needed)

    self.assertEqual(port, 0)

    return True

  def _FakeSleep(secs):

    self.assert_(secs >= 0 and secs <= 5)

    return

  def _NoopFeedback(self, text):

    return

  def testPingFnRemoveHostsUp(self):

    seen = set()

    def _FakeSeenPing(ip, *args, **kwargs):

      node = self.ips2node[ip]

      self.assertFalse(node in seen)

      seen.add(node)

      return True

    helper = gnt_cluster._RunWhenNodesReachableHelper(self.nodes,

                                                      self._FakeAction,

                                                      self.nodes2ip, 0,

                                                      self._NoopFeedback,

                                                      _ping_fn=_FakeSeenPing,

                                                      _sleep_fn=self._FakeSleep)

    nodes_len = len(self.nodes)

    for (num, _) in enumerate(self.nodes):

      helper.Wait(5)

      if num < nodes_len - 1:

        self.assertRaises(utils.RetryAgain, helper)

      else:

        helper()

    self.assertEqual(seen, self.nodes)

    self.assertFalse(helper.down)

    self.assertEqual(helper.up, self.nodes)

  def testActionReturnFalseSetsHelperFalse(self):

    called = False

    def _FalseAction(*args):

      return called

    helper = gnt_cluster._RunWhenNodesReachableHelper(self.nodes, _FalseAction,

                                                      self.nodes2ip, 0,

                                                      self._NoopFeedback,

                                                      _ping_fn=self._FakePing,

                                                      _sleep_fn=self._FakeSleep)

    for _ in self.nodes:

      try:

        helper()

      except utils.RetryAgain:

        called = True

    self.assertFalse(helper.success)

  def testMaybeInstanceStartup(self):

    instances_arg = []

    def _FakeInstanceStart(opts, instances, start):

      instances_arg.append(set(instances))

      return None

    inst_map = {

      "inst1": set(["node1", "node2"]),

      "inst2": set(["node1", "node3"]),

      "inst3": set(["node2", "node1"]),

      "inst4": set(["node2", "node1", "node3"]),

      "inst5": set(["node4"]),

      }

    fn = _FakeInstanceStart

    self.assert_(gnt_cluster._MaybeInstanceStartup(None, inst_map, set(),

                                                   _instance_start_fn=fn))

    self.assertFalse(instances_arg)

    result = gnt_cluster._MaybeInstanceStartup(None, inst_map, set(["node1"]),

                                               _instance_start_fn=fn)

    self.assert_(result)

    self.assertFalse(instances_arg)

    result = gnt_cluster._MaybeInstanceStartup(None, inst_map,

                                               set(["node1", "node3"]),

                                               _instance_start_fn=fn)

    self.assert_(result is None)

    self.assertEqual(instances_arg.pop(0), set(["inst2"]))

    self.assertFalse("inst2" in inst_map)

    result = gnt_cluster._MaybeInstanceStartup(None, inst_map,

                                               set(["node1", "node3"]),

                                               _instance_start_fn=fn)

    self.assert_(result)

    self.assertFalse(instances_arg)

    result = gnt_cluster._MaybeInstanceStartup(None, inst_map,

                                               set(["node1", "node3", "node2"]),

                                               _instance_start_fn=fn)

    self.assertEqual(instances_arg.pop(0), set(["inst1", "inst3", "inst4"]))

    self.assert_(result is None)

    result = gnt_cluster._MaybeInstanceStartup(None, inst_map,

                                               set(["node1", "node3", "node2",

                                                    "node4"]),

                                               _instance_start_fn=fn)

    self.assert_(result is None)

    self.assertEqual(instances_arg.pop(0), set(["inst5"]))

    self.assertFalse(inst_map)

class _ClientForEpo:

  def __init__(self, groups, nodes):

    self._groups = groups

    self._nodes = nodes

  def QueryGroups(self, names, fields, use_locking):

    assert not use_locking

    assert fields == ["node_list"]

    return self._groups

  def QueryNodes(self, names, fields, use_locking):

    assert not use_locking

    assert fields == ["name", "master", "pinst_list", "sinst_list", "powered",

                      "offline"]

    return self._nodes

class TestEpo(unittest.TestCase):

  _ON_EXITCODE = 253

  _OFF_EXITCODE = 254

  def _ConfirmForce(self, *args):

    self.fail("Shouldn't need confirmation")

  def _Confirm(self, exp_names, result, names, ltype, text):

    self.assertEqual(names, exp_names)

    self.assertFalse(result is NotImplemented)

    return result

  def _Off(self, exp_node_list, opts, node_list, inst_map):

    self.assertEqual(node_list, exp_node_list)

    self.assertFalse(inst_map)

    return self._OFF_EXITCODE

  def _Test(self, *args, **kwargs):

    defaults = dict(cl=NotImplemented, _on_fn=NotImplemented,

                    _off_fn=NotImplemented,

                    _stdout_fn=lambda *args: None,

                    _stderr_fn=lambda *args: None)

    defaults.update(kwargs)

    return gnt_cluster.Epo(*args, **defaults)

  def testShowAllWithGroups(self):

    opts = optparse.Values(dict(groups=True, show_all=True))

    result = self._Test(opts, NotImplemented)

    self.assertEqual(result, constants.EXIT_FAILURE)

  def testShowAllWithArgs(self):

    opts = optparse.Values(dict(groups=False, show_all=True))

    result = self._Test(opts, ["a", "b", "c"])

    self.assertEqual(result, constants.EXIT_FAILURE)

  def testNoArgumentsNoParameters(self):

    for (force, confirm_result) in [(True, NotImplemented), (False, False),

                                    (False, True)]:

      opts = optparse.Values(dict(groups=False, show_all=False, force=force,

                                  on=False))

      client = _ClientForEpo(NotImplemented, [

        ("node1.example.com", False, [], [], True, False),

        ])

      if force:

        confirm_fn = self._ConfirmForce

      else:

        confirm_fn = compat.partial(self._Confirm, ["node1.example.com"],

                                    confirm_result)

      off_fn = compat.partial(self._Off, ["node1.example.com"])

      result = self._Test(opts, [], cl=client, _off_fn=off_fn,

                          _confirm_fn=confirm_fn)

      if force or confirm_result:

        self.assertEqual(result, self._OFF_EXITCODE)

      else:

        self.assertEqual(result, constants.EXIT_FAILURE)

  def testPowerOn(self):

    for master in [False, True]:

      opts = optparse.Values(dict(groups=False, show_all=True,

                                  force=True, on=True))

      client = _ClientForEpo(NotImplemented, [

        ("node1.example.com", False, [], [], True, False),

        ("node2.example.com", False, [], [], False, False),

        ("node3.example.com", False, [], [], True, True),

        ("node4.example.com", False, [], [], None, True),

        ("node5.example.com", master, [], [], False, False),

        ])

      def _On(_, all_nodes, node_list, inst_map):

        self.assertEqual(all_nodes,

                         ["node%s.example.com" % i for i in range(1, 6)])

        if master:

          self.assertEqual(node_list, ["node2.example.com"])

        else:

          self.assertEqual(node_list, ["node2.example.com",

                                       "node5.example.com"])

        self.assertFalse(inst_map)

        return self._ON_EXITCODE

      result = self._Test(opts, [], cl=client, _on_fn=_On,

                          _confirm_fn=self._ConfirmForce)

      self.assertEqual(result, self._ON_EXITCODE)

  def testMasterWithoutShowAll(self):

    opts = optparse.Values(dict(groups=False, show_all=False,

                                force=True, on=False))

    client = _ClientForEpo(NotImplemented, [

      ("node1.example.com", True, [], [], True, False),

      ])

    result = self._Test(opts, [], cl=client, _confirm_fn=self._ConfirmForce)

    self.assertEqual(result, constants.EXIT_FAILURE)

class InitDrbdHelper(unittest.TestCase):

  def setUp(self):

    unittest.TestCase.setUp(self)

    self.enabled_disk_templates = []

  def enableDrbd(self):

    self.enabled_disk_templates = [constants.DT_DRBD8]

  def disableDrbd(self):

    self.enabled_disk_templates = [constants.DT_DISKLESS]

  def testNoDrbdNoHelper(self):

    opts = mock.Mock()

    opts.drbd_helper = None

    self.disableDrbd()

    helper = gnt_cluster._InitDrbdHelper(opts, self.enabled_disk_templates)

    self.assertEquals(None, helper)

  def testNoDrbdHelper(self):

    opts = mock.Mock()

    self.disableDrbd()

    opts.drbd_helper = "/bin/true"

    self.assertRaises(errors.OpPrereqError, gnt_cluster._InitDrbdHelper, opts,

        self.enabled_disk_templates)

  def testDrbdHelperNone(self):

    opts = mock.Mock()

    self.enableDrbd()

    opts.drbd_helper = None

    helper = gnt_cluster._InitDrbdHelper(opts, self.enabled_disk_templates)

    self.assertEquals(constants.DEFAULT_DRBD_HELPER, helper)

  def testDrbdHelperEmpty(self):

    opts = mock.Mock()

    self.enableDrbd()

    opts.drbd_helper = ''

    self.assertRaises(errors.OpPrereqError, gnt_cluster._InitDrbdHelper, opts,

        self.enabled_disk_templates)

  def testDrbdHelper(self):

    opts = mock.Mock()

    self.enableDrbd()

    opts.drbd_helper = "/bin/true"

    helper = gnt_cluster._InitDrbdHelper(opts, self.enabled_disk_templates)

    self.assertEquals(opts.drbd_helper, helper)

class GetDrbdHelper(unittest.TestCase):

  def testNoDrbdNoHelper(self):

    opts = mock.Mock()

    opts.drbd_storage = False

    opts.drbd_helper = None

    helper = gnt_cluster._GetDrbdHelper(opts)

    self.assertEquals("", helper)

  def testNoDrbdHelper(self):

    opts = mock.Mock()

    opts.drbd_storage = None

    opts.drbd_helper = "/bin/true"

    self.assertRaises(errors.OpPrereqError, gnt_cluster._GetDrbdHelper, opts)

  def testDrbdNoHelper(self):

    opts = mock.Mock()

    opts.drbd_storage = True

    opts.drbd_helper = None

    helper = gnt_cluster._GetDrbdHelper(opts)

    self.assertEquals(None, helper)

  def testDrbdHelper(self):

    opts = mock.Mock()

    opts.drbd_storage = True

    opts.drbd_helper = "/bin/true"

    helper = gnt_cluster._GetDrbdHelper(opts)

    self.assertEquals(opts.drbd_helper, helper)

if __name__ == "__main__":

  testutils.GanetiTestProgram()