text: #    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.
  
  import uuid
  
  import mock
  
  import nova.conf
  from nova import objects
  from nova.scheduler.filters import affinity_filter
  from nova import test
  from nova.tests.unit.scheduler import fakes
  from nova.tests import uuidsentinel as uuids
  
  CONF = nova.conf.CONF
  
  
  class TestDifferentHostFilter(test.NoDBTestCase):
  
      def setUp(self):
          super(TestDifferentHostFilter, self).setUp()
          self.filt_cls = affinity_filter.DifferentHostFilter()
  
      def test_affinity_different_filter_passes(self):
          host = fakes.FakeHostState('host1', 'node1', {})
          inst1 = objects.Instance(uuid=uuids.instance)
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(different_host=['same']))
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_different_filter_fails(self):
          inst1 = objects.Instance(uuid=uuids.instance)
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(different_host=[uuids.instance]))
          self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_different_filter_handles_none(self):
          inst1 = objects.Instance(uuid=uuids.instance)
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=None)
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
  
  class TestSameHostFilter(test.NoDBTestCase):
  
      def setUp(self):
          super(TestSameHostFilter, self).setUp()
          self.filt_cls = affinity_filter.SameHostFilter()
  
      def test_affinity_same_filter_passes(self):
          inst1 = objects.Instance(uuid=uuids.instance)
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(same_host=[uuids.instance]))
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_same_filter_no_list_passes(self):
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(same_host=['same']))
          self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_same_filter_fails(self):
          inst1 = objects.Instance(uuid=uuids.instance)
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(same_host=['same']))
          self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_same_filter_handles_none(self):
          inst1 = objects.Instance(uuid=uuids.instance)
          host = fakes.FakeHostState('host1', 'node1', {})
          host.instances = {inst1.uuid: inst1}
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=None)
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
  
  class TestSimpleCIDRAffinityFilter(test.NoDBTestCase):
  
      def setUp(self):
          super(TestSimpleCIDRAffinityFilter, self).setUp()
          self.filt_cls = affinity_filter.SimpleCIDRAffinityFilter()
  
      def test_affinity_simple_cidr_filter_passes(self):
          host = fakes.FakeHostState('host1', 'node1', {})
          host.host_ip = '10.8.1.1'
  
          affinity_ip = "10.8.1.100"
  
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(
                  cidr=['/24'],
                  build_near_host_ip=[affinity_ip]))
  
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_simple_cidr_filter_fails(self):
          host = fakes.FakeHostState('host1', 'node1', {})
          host.host_ip = '10.8.1.1'
  
          affinity_ip = "10.8.1.100"
  
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=dict(
                  cidr=['/32'],
                  build_near_host_ip=[affinity_ip]))
  
          self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
  
      def test_affinity_simple_cidr_filter_handles_none(self):
          host = fakes.FakeHostState('host1', 'node1', {})
  
          spec_obj = objects.RequestSpec(
              context=mock.sentinel.ctx,
              scheduler_hints=None)
  
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
  
  
  class TestGroupAffinityFilter(test.NoDBTestCase):
  
      def _test_group_anti_affinity_filter_passes(self, filt_cls, policy):
          host = fakes.FakeHostState('host1', 'node1', {})
          spec_obj = objects.RequestSpec(instance_group=None)
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=['affinity']))
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=[policy]), instance_uuid=str(uuid.uuid4()))
          spec_obj.instance_group.hosts = []
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
          spec_obj.instance_group.hosts = ['host2']
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
  
      def test_group_anti_affinity_filter_passes(self):
          self._test_group_anti_affinity_filter_passes(
                  affinity_filter.ServerGroupAntiAffinityFilter(),
                  'anti-affinity')
  
      def _test_group_anti_affinity_filter_fails(self, filt_cls, policy):
          host = fakes.FakeHostState('host1', 'node1', {})
          spec_obj = objects.RequestSpec(
              instance_group=objects.InstanceGroup(policies=[policy],
                                                   hosts=['host1']),
              instance_uuid=str(uuid.uuid4()))
          self.assertFalse(filt_cls.host_passes(host, spec_obj))
  
      def test_group_anti_affinity_filter_fails(self):
          self._test_group_anti_affinity_filter_fails(
                  affinity_filter.ServerGroupAntiAffinityFilter(),
                  'anti-affinity')
  
      def test_group_anti_affinity_filter_allows_instance_to_same_host(self):
          fake_uuid = str(uuid.uuid4())
          mock_instance = objects.Instance(uuid=fake_uuid)
          host_state = fakes.FakeHostState('host1', 'node1',
                                           {}, instances=[mock_instance])
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=['anti-affinity'], hosts=['host1', 'host2']),
              instance_uuid=mock_instance.uuid)
          self.assertTrue(affinity_filter.ServerGroupAntiAffinityFilter().
                          host_passes(host_state, spec_obj))
  
      def _test_group_affinity_filter_passes(self, filt_cls, policy):
          host = fakes.FakeHostState('host1', 'node1', {})
          spec_obj = objects.RequestSpec(instance_group=None)
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=['anti-affinity']))
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=['affinity'],
              hosts=['host1']))
          self.assertTrue(filt_cls.host_passes(host, spec_obj))
  
      def test_group_affinity_filter_passes(self):
          self._test_group_affinity_filter_passes(
                  affinity_filter.ServerGroupAffinityFilter(), 'affinity')
  
      def _test_group_affinity_filter_fails(self, filt_cls, policy):
          host = fakes.FakeHostState('host1', 'node1', {})
          spec_obj = objects.RequestSpec(instance_group=objects.InstanceGroup(
              policies=[policy],
              hosts=['host2']))
          self.assertFalse(filt_cls.host_passes(host, spec_obj))
  
      def test_group_affinity_filter_fails(self):
          self._test_group_affinity_filter_fails(
                  affinity_filter.ServerGroupAffinityFilter(), 'affinity')
  