70 lines
3.0 KiB
Python
70 lines
3.0 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_serialization import jsonutils
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from nova import conf
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from nova.tests import fixtures as nova_fixtures
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from nova.tests.functional import integrated_helpers
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CONF = conf.CONF
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class JsonFilterTestCase(integrated_helpers.ProviderUsageBaseTestCase):
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"""Functional tests for the JsonFilter scheduler filter."""
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microversion = '2.1'
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compute_driver = 'fake.SmallFakeDriver'
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def setUp(self):
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# Need to enable the JsonFilter before starting the scheduler service
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# in the parent class.
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enabled_filters = CONF.filter_scheduler.enabled_filters
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if 'JsonFilter' not in enabled_filters:
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enabled_filters.append('JsonFilter')
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self.flags(enabled_filters=enabled_filters,
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group='filter_scheduler')
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# Use our custom weigher defined above to make sure that we have
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# a predictable scheduling sort order during server create.
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self.useFixture(nova_fixtures.HostNameWeigherFixture())
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super(JsonFilterTestCase, self).setUp()
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# Now create two compute services which will have unique host and
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# node names.
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self._start_compute('host1')
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self._start_compute('host2')
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def test_filter_on_hypervisor_hostname(self):
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"""Tests a commonly used scenario for people trying to build a
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baremetal server on a specific ironic node. Note that although
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an ironic deployment would normally have a 1:M host:node topology
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the test is setup with a 1:1 host:node but we can still test using
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that by filtering on hypervisor_hostname. Also note that an admin
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could force a server to build on a specific host by passing
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availability_zone=<zone>::<nodename> but that means no filters get run
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which might be undesirable.
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"""
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# Create a server passing the hypervisor_hostname query scheduler hint
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# for host2 to make sure the filter works. If not, because of the
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# custom HostNameWeigher, host1 would be chosen.
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query = jsonutils.dumps(['=', '$hypervisor_hostname', 'host2'])
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server = self._build_server()
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request = {'server': server, 'os:scheduler_hints': {'query': query}}
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server = self.api.post_server(request)
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server = self._wait_for_state_change(server, 'ACTIVE')
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# Since we request host2 the server should be there despite host1 being
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# weighed higher.
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self.assertEqual(
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'host2', server['OS-EXT-SRV-ATTR:hypervisor_hostname'])
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