/
test_block_device_mapping.py
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/
test_block_device_mapping.py
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# 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.
import mock
import mox
from oslo.config import cfg
from webob import exc
from nova.api.openstack.compute import plugins
from nova.api.openstack.compute.plugins.v3 import block_device_mapping
from nova.api.openstack.compute.plugins.v3 import servers
from nova import block_device
from nova.compute import api as compute_api
from nova import exception
from nova.openstack.common import jsonutils
from nova import test
from nova.tests.api.openstack import fakes
from nova.tests.image import fake
from nova.tests import matchers
CONF = cfg.CONF
class BlockDeviceMappingTest(test.TestCase):
def setUp(self):
super(BlockDeviceMappingTest, self).setUp()
ext_info = plugins.LoadedExtensionInfo()
self.controller = servers.ServersController(extension_info=ext_info)
CONF.set_override('extensions_blacklist', 'os-block-device-mapping',
'osapi_v3')
self.no_volumes_controller = servers.ServersController(
extension_info=ext_info)
CONF.set_override('extensions_blacklist', '', 'osapi_v3')
fake.stub_out_image_service(self.stubs)
self.bdm = [{
'no_device': None,
'source_type': 'volume',
'destination_type': 'volume',
'uuid': 'fake',
'device_name': 'vda',
'delete_on_termination': False,
}]
def _test_create(self, params, no_image=False, override_controller=None):
body = {
'server': {
'min_count': 2,
'name': 'server_test',
'image_ref': '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6',
'flavor_ref': 'http://localhost/123/flavors/3',
'metadata': {
'hello': 'world',
'open': 'stack',
},
},
}
if no_image:
body['server']['image_ref'] = ''
body['server'].update(params)
req = fakes.HTTPRequestV3.blank('/servers')
req.method = 'POST'
req.headers['content-type'] = 'application/json'
req.body = jsonutils.dumps(body)
if override_controller:
override_controller.create(req, body=body).obj['server']
else:
self.controller.create(req, body=body).obj['server']
def test_create_instance_with_block_device_mapping_disabled(self):
bdm = [{'device_name': 'foo'}]
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertNotIn('block_device_mapping', kwargs)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: bdm}
self._test_create(params,
override_controller=self.no_volumes_controller)
def test_create_instance_with_volumes_enabled_no_image(self):
"""Test that the create will fail if there is no image
and no bdms supplied in the request
"""
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertNotIn('image_ref', kwargs)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
self.assertRaises(exc.HTTPBadRequest,
self._test_create, {}, no_image=True)
def test_create_instance_with_bdms_and_no_image(self):
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertThat(
block_device.BlockDeviceDict(self.bdm[0]),
matchers.DictMatches(kwargs['block_device_mapping'][0])
)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
self.mox.StubOutWithMock(compute_api.API, '_validate_bdm')
self.mox.StubOutWithMock(compute_api.API, '_get_bdm_image_metadata')
compute_api.API._validate_bdm(
mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg(),
mox.IgnoreArg()).AndReturn(True)
compute_api.API._get_bdm_image_metadata(
mox.IgnoreArg(), mox.IgnoreArg(), False).AndReturn({})
self.mox.ReplayAll()
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self._test_create(params, no_image=True)
def test_create_instance_with_device_name_not_string(self):
self.bdm[0]['device_name'] = 123
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertEqual(kwargs['block_device_mapping'], self.bdm)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
def test_create_instance_with_device_name_empty(self):
self.bdm[0]['device_name'] = ''
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertEqual(kwargs['block_device_mapping'], self.bdm)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
def test_create_instance_with_device_name_too_long(self):
self.bdm[0]['device_name'] = 'a' * 256
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertEqual(kwargs['block_device_mapping'], self.bdm)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
def test_create_instance_with_space_in_device_name(self):
self.bdm[0]['device_name'] = 'v da'
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertTrue(kwargs['legacy_bdm'])
self.assertEqual(kwargs['block_device_mapping'], self.bdm)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
def test_create_instance_with_invalid_size(self):
self.bdm[0]['volume_size'] = 'hello world'
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertEqual(kwargs['block_device_mapping'], self.bdm)
return old_create(*args, **kwargs)
self.stubs.Set(compute_api.API, 'create', create)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
def test_create_instance_bdm(self):
bdm = [{
'source_type': 'volume',
'device_name': 'fake_dev',
'uuid': 'fake_vol'
}]
bdm_expected = [{
'source_type': 'volume',
'device_name': 'fake_dev',
'volume_id': 'fake_vol'
}]
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertFalse(kwargs['legacy_bdm'])
for expected, received in zip(bdm_expected,
kwargs['block_device_mapping']):
self.assertThat(block_device.BlockDeviceDict(expected),
matchers.DictMatches(received))
return old_create(*args, **kwargs)
def _validate_bdm(*args, **kwargs):
pass
self.stubs.Set(compute_api.API, 'create', create)
self.stubs.Set(compute_api.API, '_validate_bdm', _validate_bdm)
params = {block_device_mapping.ATTRIBUTE_NAME: bdm}
self._test_create(params)
def test_create_instance_bdm_missing_device_name(self):
del self.bdm[0]['device_name']
old_create = compute_api.API.create
def create(*args, **kwargs):
self.assertFalse(kwargs['legacy_bdm'])
self.assertNotIn(None,
kwargs['block_device_mapping'][0]['device_name'])
return old_create(*args, **kwargs)
def _validate_bdm(*args, **kwargs):
pass
self.stubs.Set(compute_api.API, 'create', create)
self.stubs.Set(compute_api.API, '_validate_bdm', _validate_bdm)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self._test_create(params)
def test_create_instance_bdm_validation_error(self):
def _validate(*args, **kwargs):
raise exception.InvalidBDMFormat(details='Wrong BDM')
self.stubs.Set(block_device.BlockDeviceDict,
'_validate', _validate)
params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
self.assertRaises(exc.HTTPBadRequest, self._test_create, params)
@mock.patch('nova.compute.api.API._get_bdm_image_metadata')
def test_create_instance_non_bootable_volume_fails(self, fake_bdm_meta):
bdm = [{
'id': 1,
'bootable': False,
'volume_id': '1',
'status': 'active',
'device_name': 'vda',
}]
params = {'block_device_mapping': bdm}
fake_bdm_meta.side_effect = exception.InvalidBDMVolumeNotBootable(id=1)
self.assertRaises(exc.HTTPBadRequest, self._test_create, params,
no_image=True)