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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from nova.compute import task_states
from nova.compute import vm_mode
from nova import test
from nova.virt import fake
from nova.virt.xenapi import vm_utils
from nova.virt.xenapi import vmops
class VMOpsTestCase(test.TestCase):
def setUp(self):
super(VMOpsTestCase, self).setUp()
self._setup_mock_vmops()
def _setup_mock_vmops(self, product_brand=None, product_version=None):
self._session = self._get_mock_session(product_brand, product_version)
self._vmops = vmops.VMOps(self._session, fake.FakeVirtAPI())
def _get_mock_session(self, product_brand, product_version):
class Mock(object):
pass
mock_session = Mock()
mock_session.product_brand = product_brand
mock_session.product_version = product_version
return mock_session
def test_check_resize_func_name_defaults_to_VDI_resize(self):
self.assertEquals(
'VDI.resize',
self._vmops.check_resize_func_name())
def _test_finish_revert_migration_after_crash(self, backup_made, new_made):
instance = {'name': 'foo',
'task_state': task_states.RESIZE_MIGRATING}
self.mox.StubOutWithMock(vm_utils, 'lookup')
self.mox.StubOutWithMock(self._vmops, '_destroy')
self.mox.StubOutWithMock(vm_utils, 'set_vm_name_label')
self.mox.StubOutWithMock(self._vmops, '_attach_mapped_block_devices')
self.mox.StubOutWithMock(self._vmops, '_start')
vm_utils.lookup(self._session, 'foo-orig').AndReturn(
backup_made and 'foo' or None)
vm_utils.lookup(self._session, 'foo').AndReturn(
(not backup_made or new_made) and 'foo' or None)
if backup_made:
if new_made:
self._vmops._destroy(instance, 'foo')
vm_utils.set_vm_name_label(self._session, 'foo', 'foo')
self._vmops._attach_mapped_block_devices(instance, [])
self._vmops._start(instance, 'foo')
self.mox.ReplayAll()
self._vmops.finish_revert_migration(instance, [])
def test_finish_revert_migration_after_crash(self):
self._test_finish_revert_migration_after_crash(True, True)
def test_finish_revert_migration_after_crash_before_new(self):
self._test_finish_revert_migration_after_crash(True, False)
def test_finish_revert_migration_after_crash_before_backup(self):
self._test_finish_revert_migration_after_crash(False, False)
def test_determine_vm_mode_returns_xen(self):
self.mox.StubOutWithMock(vm_mode, 'get_from_instance')
fake_instance = "instance"
vm_mode.get_from_instance(fake_instance).AndReturn(vm_mode.XEN)
self.mox.ReplayAll()
self.assertEquals(vm_mode.XEN,
self._vmops._determine_vm_mode(fake_instance, None, None))
self.mox.VerifyAll()
def test_determine_vm_mode_returns_hvm(self):
self.mox.StubOutWithMock(vm_mode, 'get_from_instance')
fake_instance = "instance"
vm_mode.get_from_instance(fake_instance).AndReturn(vm_mode.HVM)
self.mox.ReplayAll()
self.assertEquals(vm_mode.HVM,
self._vmops._determine_vm_mode(fake_instance, None, None))
self.mox.VerifyAll()
def test_determine_vm_mode_returns_is_pv(self):
self.mox.StubOutWithMock(vm_mode, 'get_from_instance')
self.mox.StubOutWithMock(vm_utils, 'determine_is_pv')
fake_instance = {"os_type": "foo"}
fake_vdis = {'root': {"ref": 'fake'}}
fake_disk_type = "disk"
vm_mode.get_from_instance(fake_instance).AndReturn(None)
vm_utils.determine_is_pv(self._session, "fake", fake_disk_type,
"foo").AndReturn(True)
self.mox.ReplayAll()
self.assertEquals(vm_mode.XEN,
self._vmops._determine_vm_mode(fake_instance, fake_vdis,
fake_disk_type))
self.mox.VerifyAll()
def test_determine_vm_mode_returns_is_not_pv(self):
self.mox.StubOutWithMock(vm_mode, 'get_from_instance')
self.mox.StubOutWithMock(vm_utils, 'determine_is_pv')
fake_instance = {"os_type": "foo"}
fake_vdis = {'root': {"ref": 'fake'}}
fake_disk_type = "disk"
vm_mode.get_from_instance(fake_instance).AndReturn(None)
vm_utils.determine_is_pv(self._session, "fake", fake_disk_type,
"foo").AndReturn(False)
self.mox.ReplayAll()
self.assertEquals(vm_mode.HVM,
self._vmops._determine_vm_mode(fake_instance, fake_vdis,
fake_disk_type))
self.mox.VerifyAll()
def test_determine_vm_mode_returns_is_not_pv_no_root_disk(self):
self.mox.StubOutWithMock(vm_mode, 'get_from_instance')
self.mox.StubOutWithMock(vm_utils, 'determine_is_pv')
fake_instance = {"os_type": "foo"}
fake_vdis = {'iso': {"ref": 'fake'}}
fake_disk_type = "disk"
vm_mode.get_from_instance(fake_instance).AndReturn(None)
self.mox.ReplayAll()
self.assertEquals(vm_mode.HVM,
self._vmops._determine_vm_mode(fake_instance, fake_vdis,
fake_disk_type))
self.mox.VerifyAll()
def test_xsm_sr_check_relaxed_cached(self):
self.make_plugin_call_count = 0
def fake_make_plugin_call(plugin, method, **args):
self.make_plugin_call_count = self.make_plugin_call_count + 1
return "true"
self.stubs.Set(self._vmops, "_make_plugin_call",
fake_make_plugin_call)
self.assertTrue(self._vmops._is_xsm_sr_check_relaxed())
self.assertTrue(self._vmops._is_xsm_sr_check_relaxed())
self.assertEqual(self.make_plugin_call_count, 1)
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