text: # Copyright (C) 2015 Red Hat, Inc
  # All Rights Reserved.
  #
  #    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 fixtures
  import mock
  
  from nova.tests.functional.api import client
  from nova.tests.functional.test_servers import ServersTestBase
  from nova.tests.unit import fake_network
  from nova.tests.unit.virt.libvirt import fake_imagebackend
  from nova.tests.unit.virt.libvirt import fake_libvirt_utils
  from nova.tests.unit.virt.libvirt import fakelibvirt
  
  
  class RealTimeServersTest(ServersTestBase):
  
      def setUp(self):
          super(RealTimeServersTest, self).setUp()
  
          # Replace libvirt with fakelibvirt
          self.useFixture(fake_imagebackend.ImageBackendFixture())
          self.useFixture(fixtures.MonkeyPatch(
             'nova.virt.libvirt.driver.libvirt_utils',
             fake_libvirt_utils))
          self.useFixture(fixtures.MonkeyPatch(
             'nova.virt.libvirt.driver.libvirt',
             fakelibvirt))
          self.useFixture(fixtures.MonkeyPatch(
             'nova.virt.libvirt.host.libvirt',
             fakelibvirt))
          self.useFixture(fixtures.MonkeyPatch(
             'nova.virt.libvirt.guest.libvirt',
             fakelibvirt))
          self.useFixture(fakelibvirt.FakeLibvirtFixture())
          self.flags(sysinfo_serial='none', group='libvirt')
  
      def _setup_compute_service(self):
          self.flags(compute_driver='libvirt.LibvirtDriver')
  
      def test_no_dedicated_cpu(self):
          flavor = self._create_flavor(extra_spec={'hw:cpu_realtime': 'yes'})
          server = self._build_server(flavor)
  
          # Cannot set realtime policy in a non dedicated cpu pinning policy
          self.assertRaises(
              client.OpenStackApiException,
              self.api.post_server, {'server': server})
  
      def test_no_realtime_mask(self):
          flavor = self._create_flavor(extra_spec={
              'hw:cpu_realtime': 'yes', 'hw:cpu_policy': 'dedicated'})
          server = self._build_server(flavor)
  
          # Cannot set realtime policy if not vcpus mask defined
          self.assertRaises(
              client.OpenStackApiException,
              self.api.post_server, {'server': server})
  
      def test_success(self):
          host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
                                               cpu_cores=2, cpu_threads=2,
                                               kB_mem=15740000)
          fake_connection = fakelibvirt.Connection('qemu:///system',
                                  version=fakelibvirt.FAKE_LIBVIRT_VERSION,
                                  hv_version=fakelibvirt.FAKE_QEMU_VERSION,
                                  host_info=host_info)
          with mock.patch('nova.virt.libvirt.host.Host.get_connection',
                          return_value=fake_connection):
              self.compute = self.start_service('compute', host='test_compute0')
              fake_network.set_stub_network_methods(self)
  
              flavor = self._create_flavor(extra_spec={
                  'hw:cpu_realtime': 'yes',
                  'hw:cpu_policy': 'dedicated',
                  'hw:cpu_realtime_mask': '^1'})
              server = self._build_server(flavor)
              created = self.api.post_server({'server': server})
  
              instance = self.api.get_server(created['id'])
              instance = self._wait_for_state_change(instance, 'BUILD')
  
              self.assertEqual('ACTIVE', instance['status'])
              self._delete_server(instance['id'])
  