158 lines
6.0 KiB
Python
158 lines
6.0 KiB
Python
# Copyright 2013 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved.
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#
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# 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 time
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from oslo_config import cfg
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from ironic.common import exception
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from ironic.common import hash_ring
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from ironic.tests.unit.db import base as db_base
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CONF = cfg.CONF
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class HashRingManagerTestCase(db_base.DbTestCase):
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use_groups = False
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def setUp(self):
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super(HashRingManagerTestCase, self).setUp()
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self.ring_manager = hash_ring.HashRingManager(
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use_groups=self.use_groups)
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def register_conductors(self):
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c1 = self.dbapi.register_conductor({
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'hostname': 'host1',
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'drivers': ['driver1', 'driver2'],
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})
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c2 = self.dbapi.register_conductor({
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'hostname': 'host2',
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'drivers': ['driver1'],
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})
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c3 = self.dbapi.register_conductor({
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'hostname': 'host3',
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'drivers': ['driver1, driver2'],
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'conductor_group': 'foogroup',
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})
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c4 = self.dbapi.register_conductor({
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'hostname': 'host4',
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'drivers': ['driver1'],
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'conductor_group': 'foogroup',
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})
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c5 = self.dbapi.register_conductor({
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'hostname': 'host5',
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'drivers': ['driver1'],
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'conductor_group': 'bargroup',
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})
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for c in (c1, c2, c3, c4, c5):
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self.dbapi.register_conductor_hardware_interfaces(
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c.id,
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[{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'ansible', 'default': True},
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{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'direct', 'default': False}]
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)
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def test_hash_ring_manager_hardware_type_success(self):
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self.register_conductors()
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ring = self.ring_manager.get_ring('hardware-type', '')
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self.assertEqual(sorted(['host1', 'host2', 'host3', 'host4', 'host5']),
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sorted(ring.nodes))
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def test_hash_ring_manager_hardware_type_success_groups(self):
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# groupings should be ignored here
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self.register_conductors()
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ring = self.ring_manager.get_ring('hardware-type', 'foogroup')
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self.assertEqual(sorted(['host1', 'host2', 'host3', 'host4', 'host5']),
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sorted(ring.nodes))
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def test_hash_ring_manager_driver_not_found(self):
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self.register_conductors()
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self.assertRaises(exception.DriverNotFound,
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self.ring_manager.get_ring,
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'driver3', '')
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def test_hash_ring_manager_automatic_retry(self):
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self.assertRaises(exception.TemporaryFailure,
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self.ring_manager.get_ring,
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'hardware-type', '')
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self.register_conductors()
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self.ring_manager.get_ring('hardware-type', '')
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def test_hash_ring_manager_reset_interval(self):
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CONF.set_override('hash_ring_reset_interval', 30)
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# Just to simplify calculations
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CONF.set_override('hash_partition_exponent', 0)
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c1 = self.dbapi.register_conductor({
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'hostname': 'host1',
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'drivers': ['driver1', 'driver2'],
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})
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c2 = self.dbapi.register_conductor({
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'hostname': 'host2',
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'drivers': ['driver1'],
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})
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self.dbapi.register_conductor_hardware_interfaces(
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c1.id,
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[{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'ansible', 'default': True},
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{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'direct', 'default': False}]
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)
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ring = self.ring_manager.get_ring('hardware-type', '')
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self.assertEqual(1, len(ring))
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self.dbapi.register_conductor_hardware_interfaces(
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c2.id,
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[{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'ansible', 'default': True},
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{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'direct', 'default': False}]
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)
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ring = self.ring_manager.get_ring('hardware-type', '')
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# The new conductor is not known yet. Automatic retry does not kick in,
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# since there is an active conductor for the requested hardware type.
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self.assertEqual(1, len(ring))
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self.ring_manager.__class__._hash_rings = (
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self.ring_manager.__class__._hash_rings[0],
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time.time() - 31
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)
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ring = self.ring_manager.get_ring('hardware-type', '')
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self.assertEqual(2, len(ring))
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def test_hash_ring_manager_uncached(self):
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ring_mgr = hash_ring.HashRingManager(cache=False,
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use_groups=self.use_groups)
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ring = ring_mgr.ring
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self.assertIsNotNone(ring)
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self.assertEqual((None, 0), hash_ring.HashRingManager._hash_rings)
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class HashRingManagerWithGroupsTestCase(HashRingManagerTestCase):
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use_groups = True
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def test_hash_ring_manager_hardware_type_success(self):
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self.register_conductors()
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ring = self.ring_manager.get_ring('hardware-type', '')
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self.assertEqual(sorted(['host1', 'host2']), sorted(ring.nodes))
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def test_hash_ring_manager_hardware_type_success_groups(self):
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self.register_conductors()
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ring = self.ring_manager.get_ring('hardware-type', 'foogroup')
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self.assertEqual(sorted(['host3', 'host4']), sorted(ring.nodes))
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