8e1ca5bf34
oslo.utils release 3.37.0 [1] introduced uuidsentinel [2]. This change rips out nova's uuidsentinel and replaces it with the one from oslo.utils. [1] https://review.openstack.org/#/c/599754/ [2] https://review.openstack.org/#/c/594179/ Change-Id: I7f5f08691ca3f73073c66c29dddb996fb2c2b266 Depends-On: https://review.openstack.org/600041
218 lines
8.6 KiB
Python
218 lines
8.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from oslo_utils.fixture import uuidsentinel as uuids
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from oslo_utils import uuidutils
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from nova import context
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from nova import exception
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from nova import objects
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from nova.objects import cell_mapping
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from nova.objects import host_mapping
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from nova import test
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from nova.tests import fixtures
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sample_mapping = {'host': 'fake-host',
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'cell_mapping': None}
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sample_cell_mapping = {'id': 1,
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'uuid': '',
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'name': 'fake-cell',
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'transport_url': 'rabbit:///',
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'database_connection': 'mysql:///'}
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def create_cell_mapping(**kwargs):
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args = sample_cell_mapping.copy()
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if 'uuid' not in kwargs:
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args['uuid'] = uuidutils.generate_uuid()
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args.update(kwargs)
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ctxt = context.RequestContext('fake-user', 'fake-project')
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return cell_mapping.CellMapping._create_in_db(ctxt, args)
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def create_mapping(**kwargs):
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args = sample_mapping.copy()
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args.update(kwargs)
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if args["cell_mapping"] is None:
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args["cell_mapping"] = create_cell_mapping()
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args["cell_id"] = args.pop("cell_mapping", {}).get("id")
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ctxt = context.RequestContext('fake-user', 'fake-project')
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return host_mapping.HostMapping._create_in_db(ctxt, args)
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def create_mapping_obj(context, **kwargs):
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mapping = create_mapping(**kwargs)
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return host_mapping.HostMapping._from_db_object(
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context, host_mapping.HostMapping(), mapping)
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class HostMappingTestCase(test.NoDBTestCase):
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USES_DB_SELF = True
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def setUp(self):
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super(HostMappingTestCase, self).setUp()
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self.useFixture(fixtures.Database(database='api'))
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self.context = context.RequestContext('fake-user', 'fake-project')
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self.mapping_obj = host_mapping.HostMapping()
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self.cell_mapping_obj = cell_mapping.CellMapping()
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def _compare_cell_obj_to_mapping(self, obj, mapping):
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for key in [key for key in self.cell_mapping_obj.fields.keys()
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if key not in ("created_at", "updated_at")]:
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self.assertEqual(getattr(obj, key), mapping[key])
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def test_get_by_host(self):
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mapping = create_mapping()
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db_mapping = self.mapping_obj._get_by_host_from_db(
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self.context, mapping['host'])
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for key in self.mapping_obj.fields.keys():
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if key == "cell_mapping":
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key = "cell_id"
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self.assertEqual(db_mapping[key], mapping[key])
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def test_get_by_host_not_found(self):
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self.assertRaises(exception.HostMappingNotFound,
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self.mapping_obj._get_by_host_from_db, self.context,
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'fake-host2')
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def test_update_cell_mapping(self):
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db_hm = create_mapping()
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db_cell = create_cell_mapping(id=42)
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cell = cell_mapping.CellMapping.get_by_uuid(
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self.context, db_cell['uuid'])
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hm = host_mapping.HostMapping(self.context)
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hm.id = db_hm['id']
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hm.cell_mapping = cell
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hm.save()
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self.assertNotEqual(db_hm['cell_id'], hm.cell_mapping.id)
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for key in hm.fields.keys():
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if key in ('updated_at', 'cell_mapping'):
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continue
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model_field = getattr(hm, key)
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if key == 'created_at':
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model_field = model_field.replace(tzinfo=None)
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self.assertEqual(db_hm[key], model_field, 'field %s' % key)
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db_hm_new = host_mapping.HostMapping._get_by_host_from_db(
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self.context, db_hm['host'])
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self.assertNotEqual(db_hm['cell_id'], db_hm_new['cell_id'])
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def test_destroy_in_db(self):
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mapping = create_mapping()
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self.mapping_obj._get_by_host_from_db(self.context,
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mapping['host'])
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self.mapping_obj._destroy_in_db(self.context, mapping['host'])
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self.assertRaises(exception.HostMappingNotFound,
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self.mapping_obj._get_by_host_from_db, self.context,
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mapping['host'])
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def test_load_cell_mapping(self):
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cell = create_cell_mapping(id=42)
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mapping_obj = create_mapping_obj(self.context, cell_mapping=cell)
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cell_map_obj = mapping_obj.cell_mapping
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self._compare_cell_obj_to_mapping(cell_map_obj, cell)
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def test_host_mapping_list_get_by_cell_id(self):
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"""Tests getting all of the HostMappings for a given CellMapping id.
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"""
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# we shouldn't have any host mappings yet
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self.assertEqual(0, len(host_mapping.HostMappingList.get_by_cell_id(
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self.context, sample_cell_mapping['id'])))
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# now create a host mapping
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db_host_mapping = create_mapping()
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# now we should list out one host mapping for the cell
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host_mapping_list = host_mapping.HostMappingList.get_by_cell_id(
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self.context, db_host_mapping['cell_id'])
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self.assertEqual(1, len(host_mapping_list))
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self.assertEqual(db_host_mapping['id'], host_mapping_list[0].id)
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class HostMappingDiscoveryTest(test.TestCase):
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def _setup_cells(self):
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ctxt = context.get_admin_context()
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self.celldbs = fixtures.CellDatabases()
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cells = []
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for uuid in (uuids.cell1, uuids.cell2, uuids.cell3):
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cm = objects.CellMapping(context=ctxt,
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uuid=uuid,
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database_connection=uuid,
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transport_url='fake://')
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cm.create()
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cells.append(cm)
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self.celldbs.add_cell_database(uuid)
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self.useFixture(self.celldbs)
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for cell in cells:
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for i in (1, 2, 3):
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# Make one host in each cell unmapped
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mapped = 0 if i == 2 else 1
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host = 'host-%s-%i' % (cell.uuid, i)
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if mapped:
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hm = objects.HostMapping(context=ctxt,
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cell_mapping=cell,
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host=host)
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hm.create()
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with context.target_cell(ctxt, cell):
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cn = objects.ComputeNode(
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context=ctxt, vcpus=1, memory_mb=1, local_gb=1,
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vcpus_used=0, memory_mb_used=0, local_gb_used=0,
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hypervisor_type='danvm', hypervisor_version='1',
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cpu_info='foo',
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cpu_allocation_ratio=1.0,
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ram_allocation_ratio=1.0,
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disk_allocation_ratio=1.0,
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mapped=mapped, host=host)
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cn.create()
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def test_discover_hosts(self):
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status = lambda m: None
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ctxt = context.get_admin_context()
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# NOTE(danms): Three cells, one unmapped host per cell
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mappings = host_mapping.discover_hosts(ctxt, status_fn=status)
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self.assertEqual(3, len(mappings))
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# NOTE(danms): All hosts should be mapped now, so we should do
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# no lookups for them
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with mock.patch('nova.objects.HostMapping.get_by_host') as mock_gbh:
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mappings = host_mapping.discover_hosts(ctxt, status_fn=status)
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self.assertFalse(mock_gbh.called)
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self.assertEqual(0, len(mappings))
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def test_discover_hosts_one_cell(self):
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status = lambda m: None
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ctxt = context.get_admin_context()
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cells = objects.CellMappingList.get_all(ctxt)
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# NOTE(danms): One cell, one unmapped host per cell
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mappings = host_mapping.discover_hosts(ctxt, cells[1].uuid,
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status_fn=status)
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self.assertEqual(1, len(mappings))
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# NOTE(danms): Three cells, two with one more unmapped host
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mappings = host_mapping.discover_hosts(ctxt, status_fn=status)
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self.assertEqual(2, len(mappings))
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# NOTE(danms): All hosts should be mapped now, so we should do
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# no lookups for them
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with mock.patch('nova.objects.HostMapping.get_by_host') as mock_gbh:
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mappings = host_mapping.discover_hosts(ctxt, status_fn=status)
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self.assertFalse(mock_gbh.called)
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self.assertEqual(0, len(mappings))
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