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test_compute.py
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test_compute.py
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# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2011 Piston Cloud Computing, Inc.
# All Rights Reserved.
# Copyright 2013 Red Hat, Inc.
#
# 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.
"""Tests for compute service."""
import datetime
from itertools import chain
import operator
import sys
import time
import traceback
import ddt
from castellan import key_manager
import mock
from neutronclient.common import exceptions as neutron_exceptions
from oslo_log import log as logging
import oslo_messaging as messaging
from oslo_serialization import base64
from oslo_serialization import jsonutils
from oslo_utils import fixture as utils_fixture
from oslo_utils import timeutils
from oslo_utils import units
from oslo_utils import uuidutils
import six
import testtools
from testtools import matchers as testtools_matchers
import nova
from nova import availability_zones
from nova import block_device
from nova import compute
from nova.compute import api as compute_api
from nova.compute import flavors
from nova.compute import instance_actions
from nova.compute import manager as compute_manager
from nova.compute import power_state
from nova.compute import rpcapi as compute_rpcapi
from nova.compute import task_states
from nova.compute import utils as compute_utils
from nova.compute import vm_states
import nova.conf
from nova.console import type as ctype
from nova import context
from nova import db
from nova import exception
from nova.image import api as image_api
from nova.network import model as network_model
from nova import objects
from nova.objects import block_device as block_device_obj
from nova.objects import fields as obj_fields
from nova.objects import instance as instance_obj
from nova.objects import migrate_data as migrate_data_obj
from nova.scheduler import client as scheduler_client
from nova import test
from nova.tests import fixtures
from nova.tests.unit.compute import eventlet_utils
from nova.tests.unit.compute import fake_resource_tracker
from nova.tests.unit import fake_block_device
from nova.tests.unit import fake_diagnostics
from nova.tests.unit import fake_instance
from nova.tests.unit import fake_network
from nova.tests.unit import fake_network_cache_model
from nova.tests.unit import fake_notifier
from nova.tests.unit import fake_server_actions
from nova.tests.unit.image import fake as fake_image
from nova.tests.unit import matchers
from nova.tests.unit.objects import test_diagnostics
from nova.tests.unit.objects import test_flavor
from nova.tests.unit.objects import test_instance_numa_topology
from nova.tests.unit.objects import test_migration
from nova.tests.unit import utils as test_utils
from nova.tests import uuidsentinel as uuids
from nova import utils
from nova.virt import block_device as driver_block_device
from nova.virt.block_device import DriverVolumeBlockDevice as driver_bdm_volume
from nova.virt import event
from nova.virt import fake
from nova.virt import hardware
from nova.volume import cinder
LOG = logging.getLogger(__name__)
CONF = nova.conf.CONF
FAKE_IMAGE_REF = uuids.image_ref
NODENAME = 'fakenode1'
NODENAME2 = 'fakenode2'
COMPUTE_VERSION_NEW_ATTACH_FLOW = \
compute_api.CINDER_V3_ATTACH_MIN_COMPUTE_VERSION
COMPUTE_VERSION_OLD_ATTACH_FLOW = \
compute_api.CINDER_V3_ATTACH_MIN_COMPUTE_VERSION - 1
def fake_not_implemented(*args, **kwargs):
raise NotImplementedError()
def get_primitive_instance_by_uuid(context, instance_uuid):
"""Helper method to get an instance and then convert it to
a primitive form using jsonutils.
"""
instance = db.instance_get_by_uuid(context, instance_uuid)
return jsonutils.to_primitive(instance)
def unify_instance(instance):
"""Return a dict-like instance for both object-initiated and
model-initiated sources that can reasonably be compared.
"""
newdict = dict()
for k, v in instance.items():
if isinstance(v, datetime.datetime):
# NOTE(danms): DB models and Instance objects have different
# timezone expectations
v = v.replace(tzinfo=None)
elif k == 'fault':
# NOTE(danms): DB models don't have 'fault'
continue
elif k == 'pci_devices':
# NOTE(yonlig.he) pci devices need lazy loading
# fake db does not support it yet.
continue
newdict[k] = v
return newdict
class FakeComputeTaskAPI(object):
def resize_instance(self, context, instance, extra_instance_updates,
scheduler_hint, flavor, reservationsi, host_list=None):
pass
class BaseTestCase(test.TestCase):
def setUp(self):
super(BaseTestCase, self).setUp()
self.flags(network_manager='nova.network.manager.FlatManager')
fake.set_nodes([NODENAME, NODENAME2])
fake_notifier.stub_notifier(self)
self.addCleanup(fake_notifier.reset)
self.compute = compute_manager.ComputeManager()
# execute power syncing synchronously for testing:
self.compute._sync_power_pool = eventlet_utils.SyncPool()
# override tracker with a version that doesn't need the database:
fake_rt = fake_resource_tracker.FakeResourceTracker(self.compute.host,
self.compute.driver)
self.compute._resource_tracker = fake_rt
def fake_get_compute_nodes_in_db(self, context, **kwargs):
fake_compute_nodes = [{'local_gb': 259,
'uuid': uuids.fake_compute_node,
'vcpus_used': 0,
'deleted': 0,
'hypervisor_type': 'powervm',
'created_at': '2013-04-01T00:27:06.000000',
'local_gb_used': 0,
'updated_at': '2013-04-03T00:35:41.000000',
'hypervisor_hostname': 'fake_phyp1',
'memory_mb_used': 512,
'memory_mb': 131072,
'current_workload': 0,
'vcpus': 16,
'mapped': 1,
'cpu_info': 'ppc64,powervm,3940',
'running_vms': 0,
'free_disk_gb': 259,
'service_id': 7,
'hypervisor_version': 7,
'disk_available_least': 265856,
'deleted_at': None,
'free_ram_mb': 130560,
'metrics': '',
'stats': '',
'numa_topology': '',
'id': 2,
'host': 'fake_phyp1',
'cpu_allocation_ratio': 16.0,
'ram_allocation_ratio': 1.5,
'disk_allocation_ratio': 1.0,
'host_ip': '127.0.0.1'}]
return [objects.ComputeNode._from_db_object(
context, objects.ComputeNode(), cn)
for cn in fake_compute_nodes]
def fake_compute_node_delete(context, compute_node_id):
self.assertEqual(2, compute_node_id)
self.stub_out(
'nova.compute.manager.ComputeManager._get_compute_nodes_in_db',
fake_get_compute_nodes_in_db)
self.stub_out('nova.db.compute_node_delete',
fake_compute_node_delete)
self.compute.update_available_resource(
context.get_admin_context())
self.user_id = 'fake'
self.project_id = 'fake'
self.context = context.RequestContext(self.user_id,
self.project_id)
def fake_show(meh, context, id, **kwargs):
if id:
return {'id': id,
'name': 'fake_name',
'status': 'active',
'properties': {'kernel_id': uuids.kernel_id,
'ramdisk_id': uuids.ramdisk_id,
'something_else': 'meow'}}
else:
raise exception.ImageNotFound(image_id=id)
fake_image.stub_out_image_service(self)
self.stub_out('nova.tests.unit.image.fake._FakeImageService.show',
fake_show)
fake_network.set_stub_network_methods(self)
fake_server_actions.stub_out_action_events(self)
def fake_get_nw_info(cls, ctxt, instance, *args, **kwargs):
return network_model.NetworkInfo()
if CONF.use_neutron:
self.stub_out(
'nova.network.neutronv2.api.API.get_instance_nw_info',
fake_get_nw_info)
self.useFixture(fixtures.NeutronFixture(self))
else:
self.stub_out('nova.network.api.API.get_instance_nw_info',
fake_get_nw_info)
def fake_allocate_for_instance(cls, ctxt, instance,
*args, **kwargs):
self.assertFalse(ctxt.is_admin)
return fake_network.fake_get_instance_nw_info(self, 1, 1)
self.stub_out('nova.network.api.API.allocate_for_instance',
fake_allocate_for_instance)
self.compute_api = compute.API()
# Just to make long lines short
self.rt = self.compute._get_resource_tracker()
self.mock_get_allocs = self.useFixture(
fixtures.fixtures.MockPatch(
'nova.scheduler.client.report.SchedulerReportClient.'
'get_allocations_for_consumer')).mock
self.mock_get_allocs.return_value = {}
def tearDown(self):
ctxt = context.get_admin_context()
fake_image.FakeImageService_reset()
instances = db.instance_get_all(ctxt)
for instance in instances:
db.instance_destroy(ctxt, instance['uuid'])
fake.restore_nodes()
super(BaseTestCase, self).tearDown()
def _fake_instance(self, updates):
return fake_instance.fake_instance_obj(None, **updates)
def _create_fake_instance_obj(self, params=None, type_name='m1.tiny',
services=False, context=None):
flavor = flavors.get_flavor_by_name(type_name)
inst = objects.Instance(context=context or self.context)
inst.vm_state = vm_states.ACTIVE
inst.task_state = None
inst.power_state = power_state.RUNNING
inst.image_ref = FAKE_IMAGE_REF
inst.reservation_id = 'r-fakeres'
inst.user_id = self.user_id
inst.project_id = self.project_id
inst.host = self.compute.host
inst.node = NODENAME
inst.instance_type_id = flavor.id
inst.ami_launch_index = 0
inst.memory_mb = 0
inst.vcpus = 0
inst.root_gb = 0
inst.ephemeral_gb = 0
inst.architecture = obj_fields.Architecture.X86_64
inst.os_type = 'Linux'
inst.system_metadata = (
params and params.get('system_metadata', {}) or {})
inst.locked = False
inst.created_at = timeutils.utcnow()
inst.updated_at = timeutils.utcnow()
inst.launched_at = timeutils.utcnow()
inst.security_groups = objects.SecurityGroupList(objects=[])
inst.keypairs = objects.KeyPairList(objects=[])
inst.flavor = flavor
inst.old_flavor = None
inst.new_flavor = None
if params:
inst.flavor.update(params.pop('flavor', {}))
inst.update(params)
if services:
_create_service_entries(self.context.elevated(),
[['fake_zone', [inst.host]]])
inst.create()
return inst
def _create_group(self):
values = {'name': 'testgroup',
'description': 'testgroup',
'user_id': self.user_id,
'project_id': self.project_id}
return db.security_group_create(self.context, values)
def _init_aggregate_with_host(self, aggr, aggr_name, zone, host):
if not aggr:
aggr = self.api.create_aggregate(self.context, aggr_name, zone)
aggr = self.api.add_host_to_aggregate(self.context, aggr.id, host)
return aggr
class ComputeVolumeTestCase(BaseTestCase):
def setUp(self):
super(ComputeVolumeTestCase, self).setUp()
self.fetched_attempts = 0
self.instance = {
'id': 'fake',
'uuid': uuids.instance,
'name': 'fake',
'root_device_name': '/dev/vda',
}
self.fake_volume = fake_block_device.FakeDbBlockDeviceDict(
{'source_type': 'volume', 'destination_type': 'volume',
'volume_id': uuids.volume_id, 'device_name': '/dev/vdb',
'connection_info': jsonutils.dumps({})})
self.instance_object = objects.Instance._from_db_object(
self.context, objects.Instance(),
fake_instance.fake_db_instance())
self.stub_out('nova.volume.cinder.API.get', lambda *a, **kw:
{'id': uuids.volume_id, 'size': 4,
'attach_status': 'detached'})
self.stub_out('nova.virt.fake.FakeDriver.get_volume_connector',
lambda *a, **kw: None)
self.stub_out('nova.volume.cinder.API.initialize_connection',
lambda *a, **kw: {})
self.stub_out('nova.volume.cinder.API.terminate_connection',
lambda *a, **kw: None)
self.stub_out('nova.volume.cinder.API.attach',
lambda *a, **kw: None)
self.stub_out('nova.volume.cinder.API.detach',
lambda *a, **kw: None)
self.stub_out('nova.volume.cinder.API.check_availability_zone',
lambda *a, **kw: None)
self.stub_out('eventlet.greenthread.sleep',
lambda *a, **kw: None)
def store_cinfo(context, *args, **kwargs):
self.cinfo = jsonutils.loads(args[-1].get('connection_info'))
return self.fake_volume
self.stub_out('nova.db.block_device_mapping_create', store_cinfo)
self.stub_out('nova.db.block_device_mapping_update', store_cinfo)
@mock.patch.object(compute_utils, 'EventReporter')
def test_attach_volume_serial(self, mock_event):
fake_bdm = objects.BlockDeviceMapping(context=self.context,
**self.fake_volume)
with (mock.patch.object(cinder.API, 'get_volume_encryption_metadata',
return_value={})):
instance = self._create_fake_instance_obj()
self.compute.attach_volume(self.context, instance, bdm=fake_bdm)
self.assertEqual(self.cinfo.get('serial'), uuids.volume_id)
mock_event.assert_called_once_with(
self.context, 'compute_attach_volume', CONF.host,
instance.uuid)
@mock.patch.object(compute_utils, 'EventReporter')
@mock.patch('nova.context.RequestContext.elevated')
@mock.patch('nova.compute.utils.notify_about_volume_attach_detach')
def test_attach_volume_raises(self, mock_notify, mock_elevate,
mock_event):
mock_elevate.return_value = self.context
fake_bdm = objects.BlockDeviceMapping(**self.fake_volume)
instance = self._create_fake_instance_obj()
expected_exception = test.TestingException()
def fake_attach(*args, **kwargs):
raise expected_exception
with test.nested(
mock.patch.object(driver_block_device.DriverVolumeBlockDevice,
'attach'),
mock.patch.object(cinder.API, 'unreserve_volume'),
mock.patch.object(objects.BlockDeviceMapping,
'destroy')
) as (mock_attach, mock_unreserve, mock_destroy):
mock_attach.side_effect = fake_attach
self.assertRaises(
test.TestingException, self.compute.attach_volume,
self.context, instance, fake_bdm)
self.assertTrue(mock_unreserve.called)
self.assertTrue(mock_destroy.called)
mock_notify.assert_has_calls([
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='start',
volume_id=uuids.volume_id),
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='error',
volume_id=uuids.volume_id,
exception=expected_exception,
tb=mock.ANY),
])
mock_event.assert_called_once_with(
self.context, 'compute_attach_volume', CONF.host,
instance.uuid)
@mock.patch('nova.context.RequestContext.elevated')
@mock.patch('nova.compute.utils.notify_about_volume_attach_detach')
def test_attach_volume_raises_new_flow(self, mock_notify, mock_elevate):
mock_elevate.return_value = self.context
attachment_id = uuids.attachment_id
fake_bdm = objects.BlockDeviceMapping(**self.fake_volume)
fake_bdm.attachment_id = attachment_id
instance = self._create_fake_instance_obj()
expected_exception = test.TestingException()
def fake_attach(*args, **kwargs):
raise expected_exception
with test.nested(
mock.patch.object(driver_block_device.DriverVolumeBlockDevice,
'attach'),
mock.patch.object(cinder.API, 'attachment_delete'),
mock.patch.object(objects.BlockDeviceMapping,
'destroy')
) as (mock_attach, mock_attachment_delete, mock_destroy):
mock_attach.side_effect = fake_attach
self.assertRaises(
test.TestingException, self.compute.attach_volume,
self.context, instance, fake_bdm)
self.assertTrue(mock_attachment_delete.called)
self.assertTrue(mock_destroy.called)
mock_notify.assert_has_calls([
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='start',
volume_id=uuids.volume_id),
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='error',
volume_id=uuids.volume_id,
exception=expected_exception,
tb=mock.ANY),
])
@mock.patch.object(compute_utils, 'EventReporter')
def test_detach_volume_api_raises(self, mock_event):
fake_bdm = objects.BlockDeviceMapping(**self.fake_volume)
instance = self._create_fake_instance_obj()
with test.nested(
mock.patch.object(driver_bdm_volume, 'driver_detach'),
mock.patch.object(self.compute.volume_api, 'detach'),
mock.patch.object(objects.BlockDeviceMapping,
'get_by_volume_and_instance'),
mock.patch.object(fake_bdm, 'destroy')
) as (mock_internal_detach, mock_detach, mock_get, mock_destroy):
mock_detach.side_effect = test.TestingException
mock_get.return_value = fake_bdm
self.assertRaises(
test.TestingException, self.compute.detach_volume,
self.context, uuids.volume, instance, 'fake_id')
self.assertFalse(mock_destroy.called)
mock_event.assert_called_once_with(
self.context, 'compute_detach_volume', CONF.host,
instance.uuid)
@mock.patch.object(compute_utils, 'EventReporter')
def test_detach_volume_bdm_destroyed(self, mock_event):
# Assert that the BDM is destroyed given a successful call to detach
# the volume from the instance in Cinder.
fake_bdm = objects.BlockDeviceMapping(**self.fake_volume)
instance = self._create_fake_instance_obj()
with test.nested(
mock.patch.object(driver_bdm_volume, 'driver_detach'),
mock.patch.object(self.compute.volume_api, 'detach'),
mock.patch.object(objects.BlockDeviceMapping,
'get_by_volume_and_instance'),
mock.patch.object(fake_bdm, 'destroy')
) as (mock_internal_detach, mock_detach, mock_get, mock_destroy):
mock_get.return_value = fake_bdm
self.compute.detach_volume(self.context, uuids.volume_id, instance,
uuids.attachment_id)
mock_detach.assert_called_once_with(mock.ANY, uuids.volume_id,
instance.uuid,
uuids.attachment_id)
self.assertTrue(mock_destroy.called)
mock_event.assert_called_once_with(
self.context, 'compute_detach_volume', CONF.host,
instance.uuid)
def test_await_block_device_created_too_slow(self):
self.flags(block_device_allocate_retries=2)
self.flags(block_device_allocate_retries_interval=0.1)
def never_get(self, context, vol_id):
return {
'status': 'creating',
'id': 'blah',
}
self.stub_out('nova.volume.cinder.API.get', never_get)
self.assertRaises(exception.VolumeNotCreated,
self.compute._await_block_device_map_created,
self.context, '1')
def test_await_block_device_created_failed(self):
c = self.compute
fake_result = {'status': 'error', 'id': 'blah'}
with mock.patch.object(c.volume_api, 'get',
return_value=fake_result) as fake_get:
self.assertRaises(exception.VolumeNotCreated,
c._await_block_device_map_created,
self.context, '1')
fake_get.assert_called_once_with(self.context, '1')
def test_await_block_device_created_slow(self):
c = self.compute
self.flags(block_device_allocate_retries=4)
self.flags(block_device_allocate_retries_interval=0.1)
def slow_get(cls, context, vol_id):
if self.fetched_attempts < 2:
self.fetched_attempts += 1
return {
'status': 'creating',
'id': 'blah',
}
return {
'status': 'available',
'id': 'blah',
}
self.stub_out('nova.volume.cinder.API.get', slow_get)
attempts = c._await_block_device_map_created(self.context, '1')
self.assertEqual(attempts, 3)
def test_await_block_device_created_retries_negative(self):
c = self.compute
self.flags(block_device_allocate_retries=-1)
self.flags(block_device_allocate_retries_interval=0.1)
def volume_get(self, context, vol_id):
return {
'status': 'available',
'id': 'blah',
}
self.stub_out('nova.volume.cinder.API.get', volume_get)
attempts = c._await_block_device_map_created(self.context, '1')
self.assertEqual(1, attempts)
def test_await_block_device_created_retries_zero(self):
c = self.compute
self.flags(block_device_allocate_retries=0)
self.flags(block_device_allocate_retries_interval=0.1)
def volume_get(self, context, vol_id):
return {
'status': 'available',
'id': 'blah',
}
self.stub_out('nova.volume.cinder.API.get', volume_get)
attempts = c._await_block_device_map_created(self.context, '1')
self.assertEqual(1, attempts)
def test_boot_volume_serial(self):
with (
mock.patch.object(objects.BlockDeviceMapping, 'save')
) as mock_save:
block_device_mapping = [
block_device.BlockDeviceDict({
'id': 1,
'no_device': None,
'source_type': 'volume',
'destination_type': 'volume',
'snapshot_id': None,
'volume_id': uuids.volume_id,
'device_name': '/dev/vdb',
'volume_size': 55,
'delete_on_termination': False,
'attachment_id': None,
})]
bdms = block_device_obj.block_device_make_list_from_dicts(
self.context, block_device_mapping)
prepped_bdm = self.compute._prep_block_device(
self.context, self.instance_object, bdms)
self.assertEqual(2, mock_save.call_count)
volume_driver_bdm = prepped_bdm['block_device_mapping'][0]
self.assertEqual(volume_driver_bdm['connection_info']['serial'],
uuids.volume_id)
def test_boot_volume_metadata(self, metadata=True):
def volume_api_get(*args, **kwargs):
if metadata:
return {
'size': 1,
'volume_image_metadata': {'vol_test_key': 'vol_test_value',
'min_ram': u'128',
'min_disk': u'256',
'size': u'536870912'
},
}
else:
return {}
self.stub_out('nova.volume.cinder.API.get', volume_api_get)
expected_no_metadata = {'min_disk': 0, 'min_ram': 0, 'properties': {},
'size': 0, 'status': 'active'}
block_device_mapping = [{
'id': 1,
'device_name': 'vda',
'no_device': None,
'virtual_name': None,
'snapshot_id': None,
'volume_id': uuids.volume_id,
'delete_on_termination': False,
}]
image_meta = self.compute_api._get_bdm_image_metadata(
self.context, block_device_mapping)
if metadata:
self.assertEqual(image_meta['properties']['vol_test_key'],
'vol_test_value')
self.assertEqual(128, image_meta['min_ram'])
self.assertEqual(256, image_meta['min_disk'])
self.assertEqual(units.Gi, image_meta['size'])
else:
self.assertEqual(expected_no_metadata, image_meta)
# Test it with new-style BDMs
block_device_mapping = [{
'boot_index': 0,
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': uuids.volume_id,
'delete_on_termination': False,
}]
image_meta = self.compute_api._get_bdm_image_metadata(
self.context, block_device_mapping, legacy_bdm=False)
if metadata:
self.assertEqual(image_meta['properties']['vol_test_key'],
'vol_test_value')
self.assertEqual(128, image_meta['min_ram'])
self.assertEqual(256, image_meta['min_disk'])
self.assertEqual(units.Gi, image_meta['size'])
else:
self.assertEqual(expected_no_metadata, image_meta)
def test_boot_volume_no_metadata(self):
self.test_boot_volume_metadata(metadata=False)
def test_boot_image_metadata(self, metadata=True):
def image_api_get(*args, **kwargs):
if metadata:
return {
'properties': {'img_test_key': 'img_test_value'}
}
else:
return {}
self.stub_out('nova.image.api.API.get', image_api_get)
block_device_mapping = [{
'boot_index': 0,
'source_type': 'image',
'destination_type': 'local',
'image_id': uuids.image,
'delete_on_termination': True,
}]
image_meta = self.compute_api._get_bdm_image_metadata(
self.context, block_device_mapping, legacy_bdm=False)
if metadata:
self.assertEqual('img_test_value',
image_meta['properties']['img_test_key'])
else:
self.assertEqual(image_meta, {})
def test_boot_image_no_metadata(self):
self.test_boot_image_metadata(metadata=False)
@mock.patch.object(time, 'time')
@mock.patch.object(objects.InstanceList, 'get_by_host')
@mock.patch.object(utils, 'last_completed_audit_period')
@mock.patch.object(fake.FakeDriver, 'get_all_bw_counters')
def test_poll_bandwidth_usage_not_implemented(self, mock_get_counter,
mock_last, mock_get_host, mock_time):
ctxt = context.get_admin_context()
# Following methods will be called
# Note - time called two more times from Log
mock_last.return_value = (0, 0)
mock_time.side_effect = (10, 20, 21)
mock_get_host.return_value = []
mock_get_counter.side_effect = NotImplementedError
self.flags(bandwidth_poll_interval=1)
# The first call will catch a NotImplementedError,
# then LOG.info something below:
self.compute._poll_bandwidth_usage(ctxt)
self.assertIn('Bandwidth usage not supported '
'by %s' % CONF.compute_driver,
self.stdlog.logger.output)
# A second call won't call the stubs again as the bandwidth
# poll is now disabled
self.compute._poll_bandwidth_usage(ctxt)
mock_get_counter.assert_called_once_with([])
mock_last.assert_called_once_with()
mock_get_host.assert_called_once_with(ctxt, 'fake-mini',
use_slave=True)
@mock.patch.object(objects.InstanceList, 'get_by_host')
@mock.patch.object(objects.BlockDeviceMappingList,
'get_by_instance_uuid')
def test_get_host_volume_bdms(self, mock_get_by_inst, mock_get_by_host):
fake_instance = mock.Mock(uuid=uuids.volume_instance)
mock_get_by_host.return_value = [fake_instance]
volume_bdm = mock.Mock(id=1, is_volume=True)
not_volume_bdm = mock.Mock(id=2, is_volume=False)
mock_get_by_inst.return_value = [volume_bdm, not_volume_bdm]
expected_host_bdms = [{'instance': fake_instance,
'instance_bdms': [volume_bdm]}]
got_host_bdms = self.compute._get_host_volume_bdms('fake-context')
mock_get_by_host.assert_called_once_with('fake-context',
self.compute.host,
use_slave=False)
mock_get_by_inst.assert_called_once_with('fake-context',
uuids.volume_instance,
use_slave=False)
self.assertEqual(expected_host_bdms, got_host_bdms)
@mock.patch.object(utils, 'last_completed_audit_period')
@mock.patch.object(compute_manager.ComputeManager, '_get_host_volume_bdms')
def test_poll_volume_usage_disabled(self, mock_get, mock_last):
# None of the mocks should be called.
ctxt = 'MockContext'
self.flags(volume_usage_poll_interval=0)
self.compute._poll_volume_usage(ctxt)
self.assertFalse(mock_get.called)
self.assertFalse(mock_last.called)
@mock.patch.object(compute_manager.ComputeManager, '_get_host_volume_bdms')
@mock.patch.object(fake.FakeDriver, 'get_all_volume_usage')
def test_poll_volume_usage_returns_no_vols(self, mock_get_usage,
mock_get_bdms):
ctxt = 'MockContext'
# Following methods are called.
mock_get_bdms.return_value = []
self.flags(volume_usage_poll_interval=10)
self.compute._poll_volume_usage(ctxt)
mock_get_bdms.assert_called_once_with(ctxt, use_slave=True)
@mock.patch.object(compute_manager.ComputeManager, '_get_host_volume_bdms')
@mock.patch.object(compute_manager.ComputeManager,
'_update_volume_usage_cache')
@mock.patch.object(fake.FakeDriver, 'get_all_volume_usage')
def test_poll_volume_usage_with_data(self, mock_get_usage, mock_update,
mock_get_bdms):
ctxt = 'MockContext'
mock_get_usage.side_effect = lambda x, y: [3, 4]
# All the mocks are called
mock_get_bdms.return_value = [1, 2]
self.flags(volume_usage_poll_interval=10)
self.compute._poll_volume_usage(ctxt)
mock_get_bdms.assert_called_once_with(ctxt, use_slave=True)
mock_update.assert_called_once_with(ctxt, [3, 4])
@mock.patch('nova.context.RequestContext.elevated')
@mock.patch('nova.compute.utils.notify_about_volume_attach_detach')
@mock.patch.object(objects.BlockDeviceMapping,
'get_by_volume_and_instance')
@mock.patch.object(fake.FakeDriver, 'block_stats')
@mock.patch.object(compute_manager.ComputeManager, '_get_host_volume_bdms')
@mock.patch.object(fake.FakeDriver, 'get_all_volume_usage')
@mock.patch.object(fake.FakeDriver, 'instance_exists')
def test_detach_volume_usage(self, mock_exists, mock_get_all,
mock_get_bdms, mock_stats, mock_get,
mock_notify, mock_elevate):
mock_elevate.return_value = self.context
# Test that detach volume update the volume usage cache table correctly
instance = self._create_fake_instance_obj()
bdm = objects.BlockDeviceMapping(context=self.context,
id=1, device_name='/dev/vdb',
connection_info='{}',
instance_uuid=instance['uuid'],
source_type='volume',
destination_type='volume',
no_device=False,
disk_bus='foo',
device_type='disk',
volume_size=1,
volume_id=uuids.volume_id,
attachment_id=None)
host_volume_bdms = {'id': 1, 'device_name': '/dev/vdb',
'connection_info': '{}', 'instance_uuid': instance['uuid'],
'volume_id': uuids.volume_id}
mock_get.return_value = bdm.obj_clone()
mock_stats.return_value = [1, 30, 1, 20, None]
mock_get_bdms.return_value = host_volume_bdms
mock_get_all.return_value = [{'volume': uuids.volume_id,
'rd_req': 1,
'rd_bytes': 10,
'wr_req': 1,
'wr_bytes': 5,
'instance': instance}]
mock_exists.return_value = True
def fake_get_volume_encryption_metadata(self, context, volume_id):
return {}
self.stub_out('nova.volume.cinder.API.get_volume_encryption_metadata',
fake_get_volume_encryption_metadata)
self.compute.attach_volume(self.context, instance, bdm)
# Poll volume usage & then detach the volume. This will update the
# total fields in the volume usage cache.
self.flags(volume_usage_poll_interval=10)
self.compute._poll_volume_usage(self.context)
# Check that a volume.usage and volume.attach notification was sent
self.assertEqual(2, len(fake_notifier.NOTIFICATIONS))
self.compute.detach_volume(self.context, uuids.volume_id, instance,
'attach-id')
# Check that volume.attach, 2 volume.usage, and volume.detach
# notifications were sent
self.assertEqual(4, len(fake_notifier.NOTIFICATIONS))
msg = fake_notifier.NOTIFICATIONS[0]
self.assertEqual('compute.instance.volume.attach', msg.event_type)
msg = fake_notifier.NOTIFICATIONS[2]
self.assertEqual('volume.usage', msg.event_type)
payload = msg.payload
self.assertEqual(instance['uuid'], payload['instance_id'])
self.assertEqual('fake', payload['user_id'])
self.assertEqual('fake', payload['tenant_id'])
self.assertEqual(1, payload['reads'])
self.assertEqual(30, payload['read_bytes'])
self.assertEqual(1, payload['writes'])
self.assertEqual(20, payload['write_bytes'])
self.assertIsNone(payload['availability_zone'])
msg = fake_notifier.NOTIFICATIONS[3]
self.assertEqual('compute.instance.volume.detach', msg.event_type)
# Check the database for the
volume_usages = db.vol_get_usage_by_time(self.context, 0)
self.assertEqual(1, len(volume_usages))
volume_usage = volume_usages[0]
self.assertEqual(0, volume_usage['curr_reads'])
self.assertEqual(0, volume_usage['curr_read_bytes'])
self.assertEqual(0, volume_usage['curr_writes'])
self.assertEqual(0, volume_usage['curr_write_bytes'])
self.assertEqual(1, volume_usage['tot_reads'])
self.assertEqual(30, volume_usage['tot_read_bytes'])
self.assertEqual(1, volume_usage['tot_writes'])
self.assertEqual(20, volume_usage['tot_write_bytes'])
mock_notify.assert_has_calls([
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='start',
volume_id=uuids.volume_id),
mock.call(self.context, instance, 'fake-mini',
action='volume_attach', phase='end',
volume_id=uuids.volume_id),
mock.call(self.context, instance, 'fake-mini',
action='volume_detach', phase='start',
volume_id=uuids.volume_id),
mock.call(self.context, instance, 'fake-mini',
action='volume_detach', phase='end',
volume_id=uuids.volume_id),
])
mock_get.assert_called_once_with(self.context, uuids.volume_id,
instance.uuid)
mock_stats.assert_called_once_with(instance, 'vdb')
mock_get_bdms.assert_called_once_with(self.context, use_slave=True)
mock_get_all(self.context, host_volume_bdms)
mock_exists.assert_called_once_with(mock.ANY)
def test_prepare_image_mapping(self):
swap_size = 1
ephemeral_size = 1
instance_type = {'swap': swap_size,
'ephemeral_gb': ephemeral_size}
mappings = [
{'virtual': 'ami', 'device': 'sda1'},
{'virtual': 'root', 'device': '/dev/sda1'},
{'virtual': 'swap', 'device': 'sdb4'},
{'virtual': 'ephemeral0', 'device': 'sdc1'},
{'virtual': 'ephemeral1', 'device': 'sdc2'},
]
preped_bdm = self.compute_api._prepare_image_mapping(
instance_type, mappings)
expected_result = [
{
'device_name': '/dev/sdb4',
'source_type': 'blank',
'destination_type': 'local',
'device_type': 'disk',
'guest_format': 'swap',
'boot_index': -1,
'volume_size': swap_size
},
{
'device_name': '/dev/sdc1',
'source_type': 'blank',
'destination_type': 'local',
'device_type': 'disk',
'guest_format': CONF.default_ephemeral_format,
'boot_index': -1,
'volume_size': ephemeral_size
},
{
'device_name': '/dev/sdc2',
'source_type': 'blank',
'destination_type': 'local',
'device_type': 'disk',
'guest_format': CONF.default_ephemeral_format,
'boot_index': -1,
'volume_size': ephemeral_size
}
]
for expected, got in zip(expected_result, preped_bdm):
self.assertThat(expected, matchers.IsSubDictOf(got))
@mock.patch.object(objects.service, 'get_minimum_version_all_cells',
return_value=17)
def test_validate_bdm(self, mock_get_min_ver):
def fake_get(self, context, res_id):
return {'id': res_id, 'size': 4, 'multiattach': False}
def fake_check_availability_zone(*args, **kwargs):
pass
def fake_reserve_volume(*args, **kwargs):
pass
self.stub_out('nova.volume.cinder.API.get', fake_get)
self.stub_out('nova.volume.cinder.API.get_snapshot', fake_get)
self.stub_out('nova.volume.cinder.API.check_availability_zone',
fake_check_availability_zone)
self.stub_out('nova.volume.cinder.API.reserve_volume',
fake_reserve_volume)
volume_id = '55555555-aaaa-bbbb-cccc-555555555555'
snapshot_id = '66666666-aaaa-bbbb-cccc-555555555555'