155 lines
6.7 KiB
Python
155 lines
6.7 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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from oslo_config import cfg
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from oslo_config import fixture as config_fixture
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from placement import conf as placement_conf
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from placement.tests import fixtures as placement_db
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from nova import test
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from nova.tests import fixtures as nova_fixtures
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from nova.tests.functional import fixtures as func_fixtures
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from nova.tests.functional import integrated_helpers
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from nova.tests.unit import policy_fixture
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class TestLocalDeleteAllocations(test.TestCase,
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integrated_helpers.InstanceHelperMixin):
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def setUp(self):
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super(TestLocalDeleteAllocations, self).setUp()
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self.useFixture(policy_fixture.RealPolicyFixture())
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# The NeutronFixture is needed to show security groups for a server.
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self.useFixture(nova_fixtures.NeutronFixture(self))
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self.useFixture(nova_fixtures.GlanceFixture(self))
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api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
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api_version='v2.1'))
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self.api = api_fixture.api
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self.admin_api = api_fixture.admin_api
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# We need the latest microversion to force-down the compute service
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self.admin_api.microversion = 'latest'
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self.start_service('conductor')
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self.start_service('scheduler')
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@staticmethod
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def _get_usages(placement_api, rp_uuid):
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fmt = '/resource_providers/%(uuid)s/usages'
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resp = placement_api.get(fmt % {'uuid': rp_uuid})
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return resp.body['usages']
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def test_local_delete_removes_allocations_after_compute_restart(self):
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"""Tests that allocations are removed after a local delete.
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This tests the scenario where a server is local deleted (because the
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compute host is down) and we want to make sure that its allocations
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have been cleaned up once the nova-compute service restarts.
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In this scenario we conditionally use the PlacementFixture to simulate
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the case that nova-api isn't configured to talk to placement, thus we
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need to manage the placement database independently.
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"""
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config = cfg.ConfigOpts()
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placement_config = self.useFixture(config_fixture.Config(config))
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placement_conf.register_opts(config)
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self.useFixture(placement_db.Database(placement_config,
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set_config=True))
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# Get allocations, make sure they are 0.
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with func_fixtures.PlacementFixture(
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conf_fixture=placement_config, db=False,
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register_opts=False) as placement:
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compute = self.start_service('compute')
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placement_api = placement.api
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resp = placement_api.get('/resource_providers')
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rp_uuid = resp.body['resource_providers'][0]['uuid']
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usages_before = self._get_usages(placement_api, rp_uuid)
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for usage in usages_before.values():
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self.assertEqual(0, usage)
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# Create a server.
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server = self._build_server(networks='none')
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server = self.admin_api.post_server({'server': server})
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server = self._wait_for_state_change(server, 'ACTIVE')
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# Assert usages are non zero now.
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usages_during = self._get_usages(placement_api, rp_uuid)
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for usage in usages_during.values():
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self.assertNotEqual(0, usage)
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# Force-down compute to trigger local delete.
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compute.stop()
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compute_service_id = self.admin_api.get_services(
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host=compute.host, binary='nova-compute')[0]['id']
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self.admin_api.put_service(compute_service_id,
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{'forced_down': True})
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# Delete the server (will be a local delete because compute is down).
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self._delete_server(server)
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with func_fixtures.PlacementFixture(
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conf_fixture=placement_config, db=False,
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register_opts=False) as placement:
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placement_api = placement.api
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# Assert usages are still non-zero.
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usages_during = self._get_usages(placement_api, rp_uuid)
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for usage in usages_during.values():
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self.assertNotEqual(0, usage)
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# Start the compute service again. Before it comes up, it will
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# call the update_available_resource code in the ResourceTracker
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# which is what "heals" the allocations for the deleted instance.
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compute.start()
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# Get the allocations again to check against the original.
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usages_after = self._get_usages(placement_api, rp_uuid)
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# They should match.
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self.assertEqual(usages_before, usages_after)
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def test_local_delete_removes_allocations_from_api(self):
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"""Tests that the compute API deletes allocations when the compute
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service on which the instance was running is down.
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"""
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placement_api = self.useFixture(func_fixtures.PlacementFixture()).api
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compute = self.start_service('compute')
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# Get allocations, make sure they are 0.
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resp = placement_api.get('/resource_providers')
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rp_uuid = resp.body['resource_providers'][0]['uuid']
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usages_before = self._get_usages(placement_api, rp_uuid)
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for usage in usages_before.values():
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self.assertEqual(0, usage)
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# Create a server.
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server = self._build_server(networks='none')
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server = self.admin_api.post_server({'server': server})
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server = self._wait_for_state_change(server, 'ACTIVE')
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# Assert usages are non zero now.
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usages_during = self._get_usages(placement_api, rp_uuid)
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for usage in usages_during.values():
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self.assertNotEqual(0, usage)
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# Force-down compute to trigger local delete.
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compute.stop()
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compute_service_id = self.admin_api.get_services(
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host=compute.host, binary='nova-compute')[0]['id']
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self.admin_api.put_service(compute_service_id, {'forced_down': True})
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# Delete the server (will be a local delete because compute is down).
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self._delete_server(server)
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# Get the allocations again to make sure they were deleted.
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usages_after = self._get_usages(placement_api, rp_uuid)
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# They should match.
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self.assertEqual(usages_before, usages_after)
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