Synnefo » snf-ganeti

#!/usr/bin/python

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# Copyright (C) 2008, 2011, 2012, 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

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#

# 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.

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# You should have received a copy of the GNU General Public License

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Tests for LUGroup*

"""

import itertools

from ganeti import constants

from ganeti import opcodes

from ganeti import query

from testsupport import *

import testutils

class TestLUGroupAdd(CmdlibTestCase):

  def testAddExistingGroup(self):

    self.cfg.AddNewNodeGroup(name="existing_group")

    op = opcodes.OpGroupAdd(group_name="existing_group")

    self.ExecOpCodeExpectOpPrereqError(

      op, "Desired group name 'existing_group' already exists")

  def testAddNewGroup(self):

    op = opcodes.OpGroupAdd(group_name="new_group")

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

  def testAddNewGroupParams(self):

    ndparams = {constants.ND_EXCLUSIVE_STORAGE: True}

    hv_state = {constants.HT_FAKE: {constants.HVST_CPU_TOTAL: 8}}

    disk_state = {

      constants.DT_PLAIN: {

        "mock_vg": {constants.DS_DISK_TOTAL: 10}

      }

    }

    diskparams = {constants.DT_RBD: {constants.RBD_POOL: "mock_pool"}}

    ipolicy = constants.IPOLICY_DEFAULTS

    op = opcodes.OpGroupAdd(group_name="new_group",

                            ndparams=ndparams,

                            hv_state=hv_state,

                            disk_state=disk_state,

                            diskparams=diskparams,

                            ipolicy=ipolicy)

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

  def testAddNewGroupInvalidDiskparams(self):

    diskparams = {constants.DT_RBD: {constants.LV_STRIPES: 1}}

    op = opcodes.OpGroupAdd(group_name="new_group",

                            diskparams=diskparams)

    self.ExecOpCodeExpectOpPrereqError(

      op, "Provided option keys not supported")

  def testAddNewGroupInvalidIPolic(self):

    ipolicy = {"invalid_key": "value"}

    op = opcodes.OpGroupAdd(group_name="new_group",

                            ipolicy=ipolicy)

    self.ExecOpCodeExpectOpPrereqError(op, "Invalid keys in ipolicy")

class TestLUGroupAssignNodes(CmdlibTestCase):

  def __init__(self, methodName='runTest'):

    super(TestLUGroupAssignNodes, self).__init__(methodName)

    self.op = opcodes.OpGroupAssignNodes(group_name="default",

                                         nodes=[])

  def testAssignSingleNode(self):

    node = self.cfg.AddNewNode()

    op = self.CopyOpCode(self.op, nodes=[node.name])

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

  def _BuildSplitInstanceSituation(self):

    node = self.cfg.AddNewNode()

    self.cfg.AddNewInstance(disk_template=constants.DT_DRBD8,

                            primary_node=self.master,

                            secondary_node=node)

    group = self.cfg.AddNewNodeGroup()

    return (node, group)

  def testSplitInstanceNoForce(self):

    (node, group) = self._BuildSplitInstanceSituation()

    op = opcodes.OpGroupAssignNodes(group_name=group.name,

                                    nodes=[node.name])

    self.ExecOpCodeExpectOpExecError(

      op, "instances get split by this change and --force was not given")

  def testSplitInstanceForce(self):

    (node, group) = self._BuildSplitInstanceSituation()

    node2 = self.cfg.AddNewNode(group=group)

    self.cfg.AddNewInstance(disk_template=constants.DT_DRBD8,

                            primary_node=self.master,

                            secondary_node=node2)

    op = opcodes.OpGroupAssignNodes(group_name=group.name,

                                    nodes=[node.name],

                                    force=True)

    self.ExecOpCode(op)

    self.mcpu.assertLogContainsRegex("will split the following instances")

    self.mcpu.assertLogContainsRegex(

      "instances continue to be split across groups")

  @withLockedLU

  def testCheckAssignmentForSplitInstances(self, lu):

    g1 = self.cfg.AddNewNodeGroup()

    g2 = self.cfg.AddNewNodeGroup()

    g3 = self.cfg.AddNewNodeGroup()

    for (n, g) in [("n1a", g1), ("n1b", g1), ("n2a", g2), ("n2b", g2),

                   ("n3a", g3), ("n3b", g3), ("n3c", g3)]:

      self.cfg.AddNewNode(uuid=n, group=g.uuid)

    for uuid, pnode, snode in [("inst1a", "n1a", "n1b"),

                               ("inst1b", "n1b", "n1a"),

                               ("inst2a", "n2a", "n2b"),

                               ("inst3a", "n3a", None),

                               ("inst3b", "n3b", "n1b"),

                               ("inst3c", "n3b", "n2b")]:

      dt = constants.DT_DISKLESS if snode is None else constants.DT_DRBD8

      self.cfg.AddNewInstance(uuid=uuid,

                              disk_template=dt,

                              primary_node=pnode,

                              secondary_node=snode)

    # Test first with the existing state.

    (new, prev) = lu.CheckAssignmentForSplitInstances(

      [], self.cfg.GetAllNodesInfo(), self.cfg.GetAllInstancesInfo())

    self.assertEqual([], new)

    self.assertEqual(set(["inst3b", "inst3c"]), set(prev))

    # And now some changes.

    (new, prev) = lu.CheckAssignmentForSplitInstances(

      [("n1b", g3.uuid)],

      self.cfg.GetAllNodesInfo(),

      self.cfg.GetAllInstancesInfo())

    self.assertEqual(set(["inst1a", "inst1b"]), set(new))

    self.assertEqual(set(["inst3c"]), set(prev))

class TestLUGroupSetParams(CmdlibTestCase):

  def testNoModifications(self):

    op = opcodes.OpGroupSetParams(group_name=self.group.name)

    self.ExecOpCodeExpectOpPrereqError(op,

                                       "Please pass at least one modification")

  def testModifyingAll(self):

    ndparams = {constants.ND_EXCLUSIVE_STORAGE: True}

    hv_state = {constants.HT_FAKE: {constants.HVST_CPU_TOTAL: 8}}

    disk_state = {

      constants.DT_PLAIN: {

        "mock_vg": {constants.DS_DISK_TOTAL: 10}

      }

    }

    diskparams = {constants.DT_RBD: {constants.RBD_POOL: "mock_pool"}}

    ipolicy = {constants.IPOLICY_DTS: [constants.DT_DRBD8]}

    op = opcodes.OpGroupSetParams(group_name=self.group.name,

                                  ndparams=ndparams,

                                  hv_state=hv_state,

                                  disk_state=disk_state,

                                  diskparams=diskparams,

                                  ipolicy=ipolicy)

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

  def testInvalidDiskparams(self):

    diskparams = {constants.DT_RBD: {constants.LV_STRIPES: 1}}

    op = opcodes.OpGroupSetParams(group_name=self.group.name,

                                  diskparams=diskparams)

    self.ExecOpCodeExpectOpPrereqError(

      op, "Provided option keys not supported")

  def testIPolicyNewViolations(self):

    self.cfg.AddNewInstance(beparams={constants.BE_VCPUS: 8})

    min_max = dict(constants.ISPECS_MINMAX_DEFAULTS)

    min_max[constants.ISPECS_MAX].update({constants.ISPEC_CPU_COUNT: 2})

    ipolicy = {constants.ISPECS_MINMAX: [min_max]}

    op = opcodes.OpGroupSetParams(group_name=self.group.name,

                                  ipolicy=ipolicy)

    self.ExecOpCode(op)

    self.assertLogContainsRegex(

      "After the ipolicy change the following instances violate them")

class TestLUGroupRemove(CmdlibTestCase):

  def testNonEmptyGroup(self):

    group = self.cfg.AddNewNodeGroup()

    self.cfg.AddNewNode(group=group)

    op = opcodes.OpGroupRemove(group_name=group.name)

    self.ExecOpCodeExpectOpPrereqError(op, "Group .* not empty")

  def testRemoveLastGroup(self):

    self.master.group = "invalid_group"

    op = opcodes.OpGroupRemove(group_name=self.group.name)

    self.ExecOpCodeExpectOpPrereqError(

      op, "Group .* is the only group, cannot be removed")

  def testRemoveGroup(self):

    group = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupRemove(group_name=group.name)

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

class TestLUGroupRename(CmdlibTestCase):

  def testRenameToExistingName(self):

    group = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupRename(group_name=group.name,

                               new_name=self.group.name)

    self.ExecOpCodeExpectOpPrereqError(

      op, "Desired new name .* clashes with existing node group")

  def testRename(self):

    group = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupRename(group_name=group.name,

                               new_name="new_group_name")

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

class TestLUGroupEvacuate(CmdlibTestCase):

  def testEvacuateEmptyGroup(self):

    group = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupEvacuate(group_name=group.name)

    self.iallocator_cls.return_value.result = ([], [], [])

    self.ExecOpCode(op)

  def testEvacuateOnlyGroup(self):

    op = opcodes.OpGroupEvacuate(group_name=self.group.name)

    self.ExecOpCodeExpectOpPrereqError(

      op, "There are no possible target groups")

  def testEvacuateWithTargetGroups(self):

    group = self.cfg.AddNewNodeGroup()

    self.cfg.AddNewNode(group=group)

    self.cfg.AddNewNode(group=group)

    target_group1 = self.cfg.AddNewNodeGroup()

    target_group2 = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupEvacuate(group_name=group.name,

                                 target_groups=[target_group1.name,

                                                target_group2.name])

    self.iallocator_cls.return_value.result = ([], [], [])

    self.ExecOpCode(op)

  def testFailingIAllocator(self):

    group = self.cfg.AddNewNodeGroup()

    op = opcodes.OpGroupEvacuate(group_name=group.name)

    self.iallocator_cls.return_value.success = False

    self.ExecOpCodeExpectOpPrereqError(

      op, "Can't compute group evacuation using iallocator")

class TestLUGroupVerifyDisks(CmdlibTestCase):

  def testNoInstances(self):

    op = opcodes.OpGroupVerifyDisks(group_name=self.group.name)

    self.ExecOpCode(op)

    self.mcpu.assertLogIsEmpty()

  def testOfflineAndFailingNode(self):

    node = self.cfg.AddNewNode(offline=True)

    self.cfg.AddNewInstance(primary_node=node,

                            admin_state=constants.ADMINST_UP)

    self.cfg.AddNewInstance(admin_state=constants.ADMINST_UP)

    self.rpc.call_lv_list.return_value = \

      self.RpcResultsBuilder() \

        .AddFailedNode(self.master) \

        .AddOfflineNode(node) \

        .Build()

    op = opcodes.OpGroupVerifyDisks(group_name=self.group.name)

    (nerrors, offline, missing) = self.ExecOpCode(op)

    self.assertEqual(1, len(nerrors))

    self.assertEqual(0, len(offline))

    self.assertEqual(2, len(missing))

  def testValidNodeResult(self):

    self.cfg.AddNewInstance(

      disks=[self.cfg.CreateDisk(dev_type=constants.DT_PLAIN),

             self.cfg.CreateDisk(dev_type=constants.DT_PLAIN)

             ],

      admin_state=constants.ADMINST_UP)

    self.rpc.call_lv_list.return_value = \

      self.RpcResultsBuilder() \

        .AddSuccessfulNode(self.master, {

          "mockvg/mock_disk_1": (None, None, True),

          "mockvg/mock_disk_2": (None, None, False)

        }) \

        .Build()

    op = opcodes.OpGroupVerifyDisks(group_name=self.group.name)

    (nerrors, offline, missing) = self.ExecOpCode(op)

    self.assertEqual(0, len(nerrors))

    self.assertEqual(1, len(offline))

    self.assertEqual(0, len(missing))

  def testDrbdDisk(self):

    node1 = self.cfg.AddNewNode()

    node2 = self.cfg.AddNewNode()

    node3 = self.cfg.AddNewNode()

    node4 = self.cfg.AddNewNode()

    valid_disk = self.cfg.CreateDisk(dev_type=constants.DT_DRBD8,

                                     primary_node=node1,

                                     secondary_node=node2)

    broken_disk = self.cfg.CreateDisk(dev_type=constants.DT_DRBD8,

                                      primary_node=node1,

                                      secondary_node=node2)

    failing_node_disk = self.cfg.CreateDisk(dev_type=constants.DT_DRBD8,

                                            primary_node=node3,

                                            secondary_node=node4)

    self.cfg.AddNewInstance(disks=[valid_disk, broken_disk],

                            primary_node=node1,

                            admin_state=constants.ADMINST_UP)

    self.cfg.AddNewInstance(disks=[failing_node_disk],

                            primary_node=node3,

                            admin_state=constants.ADMINST_UP)

    lv_list_result = dict(("/".join(disk.logical_id), (None, None, True))

                          for disk in itertools.chain(valid_disk.children,

                                                      broken_disk.children))

    self.rpc.call_lv_list.return_value = \

      self.RpcResultsBuilder() \

        .AddSuccessfulNode(node1, lv_list_result) \

        .AddSuccessfulNode(node2, lv_list_result) \

        .AddFailedNode(node3) \

        .AddFailedNode(node4) \

        .Build()

    def GetDrbdNeedsActivationResult(node_uuid, *_):

      if node_uuid == node1.uuid:

        return self.RpcResultsBuilder() \

                 .CreateSuccessfulNodeResult(node1, [])

      elif node_uuid == node2.uuid:

        return self.RpcResultsBuilder() \

                 .CreateSuccessfulNodeResult(node2, [broken_disk.uuid])

      elif node_uuid == node3.uuid or node_uuid == node4.uuid:

        return self.RpcResultsBuilder() \

                 .CreateFailedNodeResult(node_uuid)

    self.rpc.call_drbd_needs_activation.side_effect = \

      GetDrbdNeedsActivationResult

    op = opcodes.OpGroupVerifyDisks(group_name=self.group.name)

    (nerrors, offline, missing) = self.ExecOpCode(op)

    self.assertEqual(2, len(nerrors))

    self.assertEqual(1, len(offline))

    self.assertEqual(1, len(missing))

if __name__ == "__main__":

  testutils.GanetiTestProgram()