Merge "Adds regression test for bug LP#2085135"
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nova/tests/functional/regressions/test_bug_2085135.py
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nova/tests/functional/regressions/test_bug_2085135.py
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# 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 import context
from nova.db.main import api as db
from nova import exception
from nova import objects
from nova.objects import host_mapping
from nova import test
from nova.tests import fixtures
from nova import utils
class HostMappingDiscoveryTestFail(test.TestCase):
"""Regression test for bug 2085135
"""
def setUp(self):
super().setUp()
self.ctxt = context.get_admin_context()
api_fixture = self.useFixture(fixtures.OSAPIFixture(
api_version='v2.1'))
self.admin_api = api_fixture.admin_api
self.admin_api.microversion = 'latest'
def test_discover_host_fail_after_service_deletion(self):
# Create compute
host_name = "compute-1"
service = self._start_compute(host_name)
# Store its node uuid
node_uuid = service.service_ref.compute_node.uuid
# Now delete its service
# It will delete the related compute node and host mapping
self.admin_api.api_delete(
'/os-services/%s' % service.service_ref.uuid)
# Check its deletion
self.assertRaises(exception.HostBinaryNotFound,
db.service_get_by_host_and_binary,
self.ctxt, host_name, 'nova-compute')
# Check that compute node and its mappings have correctly been deleted
with utils.temporary_mutation(self.ctxt, read_deleted='yes'):
node = db.compute_node_get_by_nodename(self.ctxt, host_name)
self.assertEqual(node['deleted'], node['id'])
self.assertRaises(exception.HostMappingNotFound,
objects.HostMapping.get_by_host,
self.ctxt, host_name)
# Now recreate the service and compute node by updating its resources
# like if the services restarts
service.manager.update_available_resource(self.ctxt)
# At this point, service and compute come back to life
# with the same compute uuid
node = db.compute_node_get_by_nodename(self.ctxt, host_name)
self.assertEqual(node['deleted'], 0)
self.assertEqual(node['uuid'], node_uuid)
# Bug #2085135: node should be unmapped and be discoverable
self.assertEqual(node['mapped'], 1)
mappings = host_mapping.discover_hosts(
self.ctxt, status_fn=lambda m: None)
self.assertEqual(0, len(mappings))
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