#
#    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 copy
import six
import uuid

from glanceclient import exc as glance_exceptions
import mock
import mox
from neutronclient.v2_0 import client as neutronclient

from heat.common import exception
from heat.common import template_format
from heat.engine.clients.os import cinder
from heat.engine.clients.os import glance
from heat.engine.clients.os import neutron
from heat.engine.clients.os import nova
from heat.engine import environment
from heat.engine import parser
from heat.engine import resource
from heat.engine.resources import instance as instances
from heat.engine import scheduler
from heat.tests import common
from heat.tests import utils
from heat.tests.v1_1 import fakes as fakes_v1_1


wp_template = '''
{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Description" : "WordPress",
  "Parameters" : {
    "KeyName" : {
      "Description" : "KeyName",
      "Type" : "String",
      "Default" : "test"
    }
  },
  "Resources" : {
    "WebServer": {
      "Type": "AWS::EC2::Instance",
      "Properties": {
        "ImageId" : "F17-x86_64-gold",
        "InstanceType"   : "m1.large",
        "KeyName"        : "test",
        "NovaSchedulerHints" : [{"Key": "foo", "Value": "spam"},
                                {"Key": "bar", "Value": "eggs"},
                                {"Key": "foo", "Value": "ham"},
                                {"Key": "foo", "Value": "baz"}],
        "UserData"       : "wordpress",
        "BlockDeviceMappings": [
            {
                "DeviceName": "vdb",
                "Ebs": {"SnapshotId": "9ef5496e-7426-446a-bbc8-01f84d9c9972",
                        "DeleteOnTermination": "True"}
            }]
      }
    }
  }
}
'''


class InstancesTest(common.HeatTestCase):
    def setUp(self):
        super(InstancesTest, self).setUp()
        self.fc = fakes_v1_1.FakeClient()

    def _setup_test_stack(self, stack_name):
        t = template_format.parse(wp_template)
        template = parser.Template(t)
        stack = parser.Stack(utils.dummy_context(), stack_name, template,
                             environment.Environment({'KeyName': 'test'}),
                             stack_id=str(uuid.uuid4()))
        return (template, stack)

    def _mock_get_image_id_success(self, imageId_input, imageId):
        self.m.StubOutWithMock(glance.GlanceClientPlugin, 'get_image_id')
        glance.GlanceClientPlugin.get_image_id(
            imageId_input).MultipleTimes().AndReturn(imageId)

    def _mock_get_image_id_fail(self, image_id, exp):
        self.m.StubOutWithMock(glance.GlanceClientPlugin, 'get_image_id')
        glance.GlanceClientPlugin.get_image_id(image_id).AndRaise(exp)

    def _get_test_template(self, stack_name, image_id=None):
        (tmpl, stack) = self._setup_test_stack(stack_name)

        tmpl.t['Resources']['WebServer']['Properties']['ImageId'] = \
            image_id or 'CentOS 5.2'
        tmpl.t['Resources']['WebServer']['Properties']['InstanceType'] = \
            '256 MB Server'

        return tmpl, stack

    def _setup_test_instance(self, return_server, name, image_id=None,
                             stub_create=True):
        stack_name = '%s_s' % name
        tmpl, stack = self._get_test_template(stack_name, image_id)
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance(name, resource_defns['WebServer'], stack)
        bdm = {"vdb": "9ef5496e-7426-446a-bbc8-01f84d9c9972:snap::True"}

        self._mock_get_image_id_success(image_id or 'CentOS 5.2', 1)

        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().AndReturn(self.fc)
        self.stub_SnapshotConstraint_validate()

        if stub_create:
            self.m.StubOutWithMock(self.fc.servers, 'create')
            self.fc.servers.create(
                image=1, flavor=1, key_name='test',
                name=utils.PhysName(
                    stack_name,
                    instance.name,
                    limit=instance.physical_resource_name_limit),
                security_groups=None,
                userdata=mox.IgnoreArg(),
                scheduler_hints={'foo': ['spam', 'ham', 'baz'], 'bar': 'eggs'},
                meta=None, nics=None, availability_zone=None,
                block_device_mapping=bdm).AndReturn(
                    return_server)

        return instance

    def _create_test_instance(self, return_server, name, stub_create=True):
        instance = self._setup_test_instance(return_server, name,
                                             stub_create=stub_create)
        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()
        return instance

    def test_instance_create(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_create')
        # this makes sure the auto increment worked on instance creation
        self.assertTrue(instance.id > 0)

        expected_ip = return_server.networks['public'][0]
        expected_az = getattr(return_server, 'OS-EXT-AZ:availability_zone')

        self.assertEqual(expected_ip, instance.FnGetAtt('PublicIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PublicDnsName'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateDnsName'))
        self.assertEqual(expected_az, instance.FnGetAtt('AvailabilityZone'))

        self.m.VerifyAll()

    def test_instance_create_with_BlockDeviceMappings(self):
        return_server = self.fc.servers.list()[4]
        instance = self._create_test_instance(return_server,
                                              'create_with_bdm')
        # this makes sure the auto increment worked on instance creation
        self.assertTrue(instance.id > 0)

        expected_ip = return_server.networks['public'][0]
        expected_az = getattr(return_server, 'OS-EXT-AZ:availability_zone')

        self.assertEqual(expected_ip, instance.FnGetAtt('PublicIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PublicDnsName'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateDnsName'))
        self.assertEqual(expected_az, instance.FnGetAtt('AvailabilityZone'))

        self.m.VerifyAll()

    def test_build_block_device_mapping(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'test_build_bdm')
        self.assertIsNone(instance._build_block_device_mapping([]))
        self.assertIsNone(instance._build_block_device_mapping(None))

        self.assertEqual({
            'vdb': '1234:snap:',
            'vdc': '5678:snap::False',
        }, instance._build_block_device_mapping([
            {'DeviceName': 'vdb', 'Ebs': {'SnapshotId': '1234'}},
            {'DeviceName': 'vdc', 'Ebs': {'SnapshotId': '5678',
                                          'DeleteOnTermination': False}},
        ]))

        self.assertEqual({
            'vdb': '1234:snap:1',
            'vdc': '5678:snap:2:True',
        }, instance._build_block_device_mapping([
            {'DeviceName': 'vdb', 'Ebs': {'SnapshotId': '1234',
                                          'VolumeSize': '1'}},
            {'DeviceName': 'vdc', 'Ebs': {'SnapshotId': '5678',
                                          'VolumeSize': '2',
                                          'DeleteOnTermination': True}},
        ]))

    def test_validate_Volumes_property(self):
        stack_name = 'validate_volumes'
        tmpl, stack = self._setup_test_stack(stack_name)
        volumes = [{'Device': 'vdb', 'VolumeId': '1234'}]
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['Volumes'] = volumes
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('validate_volumes',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_success('F17-x86_64-gold', 1)
        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().MultipleTimes().AndReturn(self.fc)
        self.stub_SnapshotConstraint_validate()
        self.m.StubOutWithMock(cinder.CinderClientPlugin, 'get_volume')
        ex = exception.VolumeNotFound(volume='1234')
        cinder.CinderClientPlugin.get_volume('1234').AndRaise(ex)
        self.m.ReplayAll()

        exc = self.assertRaises(exception.StackValidationFailed,
                                instance.validate)
        self.assertIn("VolumeId Error validating value '1234': "
                      "The Volume (1234) could not be found.",
                      six.text_type(exc))

        self.m.VerifyAll()

    def test_validate_BlockDeviceMappings_VolumeSize_valid_str(self):
        stack_name = 'val_VolumeSize_valid'
        tmpl, stack = self._setup_test_stack(stack_name)
        bdm = [{'DeviceName': 'vdb',
                'Ebs': {'SnapshotId': '1234',
                        'VolumeSize': '1'}}]
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['BlockDeviceMappings'] = bdm
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('validate_volume_size',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_success('F17-x86_64-gold', 1)
        self.stub_SnapshotConstraint_validate()
        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().MultipleTimes().AndReturn(self.fc)

        self.m.ReplayAll()

        self.assertIsNone(instance.validate())

        self.m.VerifyAll()

    def test_validate_BlockDeviceMappings_without_Ebs_property(self):
        stack_name = 'without_Ebs'
        tmpl, stack = self._setup_test_stack(stack_name)
        bdm = [{'DeviceName': 'vdb'}]
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['BlockDeviceMappings'] = bdm
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('validate_without_Ebs',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_success('F17-x86_64-gold', 1)
        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().MultipleTimes().AndReturn(self.fc)

        self.m.ReplayAll()

        exc = self.assertRaises(exception.StackValidationFailed,
                                instance.validate)
        self.assertIn("Ebs is missing, this is required",
                      six.text_type(exc))

        self.m.VerifyAll()

    def test_validate_BlockDeviceMappings_without_SnapshotId_property(self):
        stack_name = 'without_SnapshotId'
        tmpl, stack = self._setup_test_stack(stack_name)
        bdm = [{'DeviceName': 'vdb',
                'Ebs': {'VolumeSize': '1'}}]
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['BlockDeviceMappings'] = bdm
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('validate_without_SnapshotId',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_success('F17-x86_64-gold', 1)
        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().MultipleTimes().AndReturn(self.fc)

        self.m.ReplayAll()

        exc = self.assertRaises(exception.StackValidationFailed,
                                instance.validate)
        self.assertIn("SnapshotId is missing, this is required",
                      six.text_type(exc))

        self.m.VerifyAll()

    def test_validate_BlockDeviceMappings_without_DeviceName_property(self):
        stack_name = 'without_DeviceName'
        tmpl, stack = self._setup_test_stack(stack_name)
        bdm = [{'Ebs': {'SnapshotId': '1234',
                        'VolumeSize': '1'}}]
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['BlockDeviceMappings'] = bdm
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('validate_without_DeviceName',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_success('F17-x86_64-gold', 1)
        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().MultipleTimes().AndReturn(self.fc)

        self.m.ReplayAll()

        exc = self.assertRaises(exception.StackValidationFailed,
                                instance.validate)
        excepted_error = ('Property error : WebServer: BlockDeviceMappings '
                          'Property error : BlockDeviceMappings: 0 Property '
                          'error : 0: Property DeviceName not assigned')
        self.assertIn(excepted_error, six.text_type(exc))

        self.m.VerifyAll()

    def test_instance_create_with_image_id(self):
        return_server = self.fc.servers.list()[1]
        instance = self._setup_test_instance(return_server,
                                             'in_create_imgid',
                                             image_id='1')

        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()

        # this makes sure the auto increment worked on instance creation
        self.assertTrue(instance.id > 0)

        expected_ip = return_server.networks['public'][0]
        expected_az = getattr(return_server, 'OS-EXT-AZ:availability_zone')

        self.assertEqual(expected_ip, instance.FnGetAtt('PublicIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateIp'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PublicDnsName'))
        self.assertEqual(expected_ip, instance.FnGetAtt('PrivateDnsName'))
        self.assertEqual(expected_az, instance.FnGetAtt('AvailabilityZone'))

        self.m.VerifyAll()

    def test_instance_create_resolve_az_attribute(self):
        return_server = self.fc.servers.list()[1]
        instance = self._setup_test_instance(return_server,
                                             'create_resolve_az_attribute')
        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()
        expected_az = getattr(return_server, 'OS-EXT-AZ:availability_zone')
        actual_az = instance._availability_zone()

        self.assertEqual(expected_az, actual_az)
        self.m.VerifyAll()

    def test_instance_create_image_name_err(self):
        stack_name = 'test_instance_create_image_name_err_stack'
        (tmpl, stack) = self._setup_test_stack(stack_name)

        # create an instance with non exist image name
        tmpl.t['Resources']['WebServer']['Properties']['ImageId'] = 'Slackware'
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('instance_create_image_err',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_fail('Slackware',
                                     exception.ImageNotFound(
                                         image_name='Slackware'))
        self.m.ReplayAll()

        create = scheduler.TaskRunner(instance.create)
        error = self.assertRaises(exception.ResourceFailure, create)
        self.assertEqual(
            'StackValidationFailed: Property error : WebServer: '
            'ImageId Error validating value \'Slackware\': '
            'The Image (Slackware) could not be found.',
            six.text_type(error))

        self.m.VerifyAll()

    def test_instance_create_duplicate_image_name_err(self):
        stack_name = 'test_instance_create_image_name_err_stack'
        (tmpl, stack) = self._setup_test_stack(stack_name)

        # create an instance with a non unique image name
        wsp = tmpl.t['Resources']['WebServer']['Properties']
        wsp['ImageId'] = 'CentOS 5.2'
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('instance_create_image_err',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_fail('CentOS 5.2',
                                     exception.PhysicalResourceNameAmbiguity(
                                         name='CentOS 5.2'))

        self.m.ReplayAll()

        create = scheduler.TaskRunner(instance.create)
        error = self.assertRaises(exception.ResourceFailure, create)
        self.assertEqual(
            'StackValidationFailed: Property error : WebServer: '
            'ImageId Multiple physical resources were '
            'found with name (CentOS 5.2).',
            six.text_type(error))

        self.m.VerifyAll()

    def test_instance_create_image_id_err(self):
        stack_name = 'test_instance_create_image_id_err_stack'
        (tmpl, stack) = self._setup_test_stack(stack_name)

        # create an instance with non exist image Id
        tmpl.t['Resources']['WebServer']['Properties']['ImageId'] = '1'
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('instance_create_image_err',
                                      resource_defns['WebServer'], stack)

        self._mock_get_image_id_fail('1', glance_exceptions.NotFound(404))

        self.m.ReplayAll()

        create = scheduler.TaskRunner(instance.create)
        error = self.assertRaises(exception.ResourceFailure, create)
        self.assertEqual(
            'StackValidationFailed: Property error : WebServer: '
            'ImageId 404 (HTTP 404)',
            six.text_type(error))

        self.m.VerifyAll()

    def test_handle_check(self):
        (tmpl, stack) = self._setup_test_stack('test_instance_check_active')
        res_definitions = tmpl.resource_definitions(stack)

        instance = instances.Instance('instance_create_image',
                                      res_definitions['WebServer'], stack)
        instance.nova = mock.Mock()
        instance._check_active = mock.Mock(return_value=True)

        self.assertIsNone(instance.handle_check())

    def test_handle_check_raises_exception_if_instance_not_active(self):
        (tmpl, stack) = self._setup_test_stack('test_instance_check_inactive')
        res_definitions = tmpl.resource_definitions(stack)

        instance = instances.Instance('instance_create_image',
                                      res_definitions['WebServer'], stack)
        instance.nova = mock.Mock()
        instance.nova.return_value.servers.get.return_value.status = 'foo'
        instance._check_active = mock.Mock(return_value=False)

        exc = self.assertRaises(exception.Error, instance.handle_check)
        self.assertIn('foo', six.text_type(exc))

    class FakeVolumeAttach(object):
        def started(self):
            return False

    def test_instance_create_unexpected_status(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'test_instance_create')
        return_server.get = lambda: None
        return_server.status = 'BOGUS'
        e = self.assertRaises(resource.ResourceUnknownStatus,
                              instance.check_create_complete,
                              (return_server, self.FakeVolumeAttach()))
        self.assertEqual('Instance is not active - Unknown status BOGUS '
                         'due to "Unknown"', six.text_type(e))

    def test_instance_create_error_status(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'test_instance_create')
        return_server.status = 'ERROR'
        return_server.fault = {
            'message': 'NoValidHost',
            'code': 500,
            'created': '2013-08-14T03:12:10Z'
        }
        self.m.StubOutWithMock(return_server, 'get')
        return_server.get()
        self.m.ReplayAll()

        e = self.assertRaises(resource.ResourceInError,
                              instance.check_create_complete,
                              (return_server, self.FakeVolumeAttach()))
        self.assertEqual(
            'Went to status ERROR due to "Message: NoValidHost, Code: 500"',
            six.text_type(e))

        self.m.VerifyAll()

    def test_instance_create_error_no_fault(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_create')
        return_server.status = 'ERROR'

        self.m.StubOutWithMock(return_server, 'get')
        return_server.get()
        self.m.ReplayAll()

        e = self.assertRaises(
            resource.ResourceInError, instance.check_create_complete,
            (return_server, self.FakeVolumeAttach()))
        self.assertEqual(
            'Went to status ERROR due to "Message: Unknown, Code: Unknown"',
            six.text_type(e))

        self.m.VerifyAll()

    def test_instance_validate(self):
        stack_name = 'test_instance_validate_stack'
        (tmpl, stack) = self._setup_test_stack(stack_name)

        tmpl.t['Resources']['WebServer']['Properties']['ImageId'] = '1'
        resource_defns = tmpl.resource_definitions(stack)
        instance = instances.Instance('instance_create_image',
                                      resource_defns['WebServer'], stack)

        self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
        nova.NovaClientPlugin._create().AndReturn(self.fc)

        self._mock_get_image_id_success('1', 1)
        self.stub_SnapshotConstraint_validate()
        self.m.ReplayAll()

        self.assertIsNone(instance.validate())

        self.m.VerifyAll()

    def _test_instance_create_delete(self, vm_status='ACTIVE',
                                     vm_delete_status='NotFound'):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_cr_del')
        instance.resource_id = '1234'
        instance.status = vm_status

        # this makes sure the auto increment worked on instance creation
        self.assertTrue(instance.id > 0)

        d1 = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d1['server']['status'] = vm_status

        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d1))

        d2 = copy.deepcopy(d1)
        if vm_delete_status == 'DELETED':
            d2['server']['status'] = vm_delete_status
            get().AndReturn((200, d2))
        else:
            get().AndRaise(fakes_v1_1.fake_exception())

        self.m.ReplayAll()

        scheduler.TaskRunner(instance.delete)()
        self.assertEqual((instance.DELETE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_create_delete_notfound(self):
        self._test_instance_create_delete()

    def test_instance_create_delete(self):
        self._test_instance_create_delete(vm_delete_status='DELETED')

    def test_instance_create_error_delete_notfound(self):
        self._test_instance_create_delete(vm_status='ERROR')

    def test_instance_create_error_delete(self):
        self._test_instance_create_delete(
            vm_status='ERROR', vm_delete_status='DELETED')

    def test_instance_update_metadata(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'ud_md')

        ud_tmpl = self._get_test_template('update_stack')[0]
        ud_tmpl.t['Resources']['WebServer']['Metadata'] = {'test': 123}
        resource_defns = ud_tmpl.resource_definitions(instance.stack)
        scheduler.TaskRunner(instance.update, resource_defns['WebServer'])()
        self.assertEqual({'test': 123}, instance.metadata_get())

    def test_instance_update_instance_type(self):
        """
        Instance.handle_update supports changing the InstanceType, and makes
        the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_type')

        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['InstanceType'] = 'm1.small'

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)

        def activate_status(server):
            server.status = 'VERIFY_RESIZE'
        return_server.get = activate_status.__get__(return_server)

        self.m.StubOutWithMock(self.fc.client, 'post_servers_1234_action')
        self.fc.client.post_servers_1234_action(
            body={'resize': {'flavorRef': 2}}).AndReturn((202, None))
        self.fc.client.post_servers_1234_action(
            body={'confirmResize': None}).AndReturn((202, None))
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_update_instance_type_failed(self):
        """
        If the status after a resize is not VERIFY_RESIZE, it means the resize
        call failed, so we raise an explicit error.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_type_f')

        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['InstanceType'] = 'm1.small'

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)

        def activate_status(server):
            server.status = 'ACTIVE'
        return_server.get = activate_status.__get__(return_server)

        self.m.StubOutWithMock(self.fc.client, 'post_servers_1234_action')
        self.fc.client.post_servers_1234_action(
            body={'resize': {'flavorRef': 2}}).AndReturn((202, None))
        self.m.ReplayAll()

        updater = scheduler.TaskRunner(instance.update, update_template)
        error = self.assertRaises(exception.ResourceFailure, updater)
        self.assertEqual(
            "Error: Resizing to 'm1.small' failed, status 'ACTIVE'",
            six.text_type(error))
        self.assertEqual((instance.UPDATE, instance.FAILED), instance.state)
        self.m.VerifyAll()

    def create_fake_iface(self, port, net, ip):
        class fake_interface(object):
            def __init__(self, port_id, net_id, fixed_ip):
                self.port_id = port_id
                self.net_id = net_id
                self.fixed_ips = [{'ip_address': fixed_ip}]

        return fake_interface(port, net, ip)

    def test_instance_update_network_interfaces(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        # if new overlaps with old, detach the different ones in old, and
        # attach the different ones in new
        old_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'},
            {'NetworkInterfaceId': 'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
             'DeviceIndex': '1'}]
        new_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'},
            {'NetworkInterfaceId': '34b752ec-14de-416a-8722-9531015e04a5',
             'DeviceIndex': '3'}]

        instance.t['Properties']['NetworkInterfaces'] = old_interfaces
        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = new_interfaces

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46').AndReturn(None)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach('34b752ec-14de-416a-8722-9531015e04a5',
                                       None, None).AndReturn(None)
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_update_network_interfaces_old_include_new(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        # if old include new, just detach the different ones in old
        old_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'},
            {'NetworkInterfaceId': 'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
             'DeviceIndex': '1'}]
        new_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'}]

        instance.t['Properties']['NetworkInterfaces'] = old_interfaces
        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = new_interfaces

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46').AndReturn(None)

        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)

    def test_instance_update_network_interfaces_new_include_old(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        # if new include old, just attach the different ones in new
        old_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'}]
        new_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'},
            {'NetworkInterfaceId': 'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
             'DeviceIndex': '1'}]

        instance.t['Properties']['NetworkInterfaces'] = old_interfaces
        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = new_interfaces

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach('d1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
                                       None, None).AndReturn(None)

        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)

    def test_instance_update_network_interfaces_new_old_all_different(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        # if different, detach the old ones and attach the new ones
        old_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'}]
        new_interfaces = [
            {'NetworkInterfaceId': '34b752ec-14de-416a-8722-9531015e04a5',
             'DeviceIndex': '3'},
            {'NetworkInterfaceId': 'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
             'DeviceIndex': '1'}]

        instance.t['Properties']['NetworkInterfaces'] = old_interfaces
        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = new_interfaces

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'ea29f957-cd35-4364-98fb-57ce9732c10d').AndReturn(None)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach('d1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
                                       None, None).AndReturn(None)
        return_server.interface_attach('34b752ec-14de-416a-8722-9531015e04a5',
                                       None, None).AndReturn(None)

        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)

    def test_instance_update_network_interfaces_no_old(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        new_interfaces = [
            {'NetworkInterfaceId': 'ea29f957-cd35-4364-98fb-57ce9732c10d',
             'DeviceIndex': '2'},
            {'NetworkInterfaceId': '34b752ec-14de-416a-8722-9531015e04a5',
             'DeviceIndex': '3'}]
        iface = self.create_fake_iface('d1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
                                       'c4485ba1-283a-4f5f-8868-0cd46cdda52f',
                                       '10.0.0.4')

        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = new_interfaces

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_list')
        return_server.interface_list().AndReturn([iface])
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46').AndReturn(None)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach('ea29f957-cd35-4364-98fb-57ce9732c10d',
                                       None, None).AndReturn(None)
        return_server.interface_attach('34b752ec-14de-416a-8722-9531015e04a5',
                                       None, None).AndReturn(None)

        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_update_network_interfaces_no_old_no_new(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        iface = self.create_fake_iface('d1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
                                       'c4485ba1-283a-4f5f-8868-0cd46cdda52f',
                                       '10.0.0.4')

        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = []

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_list')
        return_server.interface_list().AndReturn([iface])
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46').AndReturn(None)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach(None, None, None).AndReturn(None)
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_update_network_interfaces_no_old_new_with_subnet(self):
        """
        Instance.handle_update supports changing the NetworkInterfaces,
        and makes the change making a resize API call against Nova.
        """
        return_server = self.fc.servers.list()[1]
        return_server.id = '1234'
        instance = self._create_test_instance(return_server,
                                              'ud_network_interfaces')
        iface = self.create_fake_iface('d1e9c73c-04fe-4e9e-983c-d5ef94cd1a46',
                                       'c4485ba1-283a-4f5f-8868-0cd46cdda52f',
                                       '10.0.0.4')
        subnet_id = '8c1aaddf-e49e-4f28-93ea-ca9f0b3c6240'
        nics = [{'port-id': 'ea29f957-cd35-4364-98fb-57ce9732c10d'}]
        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['NetworkInterfaces'] = []
        update_template['Properties']['SubnetId'] = subnet_id

        self.m.StubOutWithMock(self.fc.servers, 'get')
        self.fc.servers.get('1234').AndReturn(return_server)
        self.m.StubOutWithMock(return_server, 'interface_list')
        return_server.interface_list().AndReturn([iface])
        self.m.StubOutWithMock(return_server, 'interface_detach')
        return_server.interface_detach(
            'd1e9c73c-04fe-4e9e-983c-d5ef94cd1a46').AndReturn(None)
        self.m.StubOutWithMock(instance, '_build_nics')
        instance._build_nics([], security_groups=None,
                             subnet_id=subnet_id).AndReturn(nics)
        self.m.StubOutWithMock(return_server, 'interface_attach')
        return_server.interface_attach('ea29f957-cd35-4364-98fb-57ce9732c10d',
                                       None, None).AndReturn(None)
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.update, update_template)()
        self.assertEqual((instance.UPDATE, instance.COMPLETE), instance.state)
        self.m.VerifyAll()

    def test_instance_update_properties(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_update2')

        self.stub_ImageConstraint_validate()
        self.m.ReplayAll()

        update_template = copy.deepcopy(instance.t)
        update_template['Properties']['ImageId'] = 'mustreplace'
        updater = scheduler.TaskRunner(instance.update, update_template)
        self.assertRaises(resource.UpdateReplace, updater)

        self.m.VerifyAll()

    def test_instance_status_build(self):
        return_server = self.fc.servers.list()[0]
        instance = self._setup_test_instance(return_server,
                                             'in_sts_build')
        instance.resource_id = '1234'

        # Bind fake get method which Instance.check_create_complete will call
        def activate_status(server):
            server.status = 'ACTIVE'
        return_server.get = activate_status.__get__(return_server)
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.create)()
        self.assertEqual((instance.CREATE, instance.COMPLETE), instance.state)

    def test_instance_status_suspend_immediate(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_suspend')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to SUSPENDED
        d = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d['server']['status'] = 'SUSPENDED'
        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d))
        mox.Replay(get)

        scheduler.TaskRunner(instance.suspend)()
        self.assertEqual((instance.SUSPEND, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_status_resume_immediate(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_resume')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to SUSPENDED
        d = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d['server']['status'] = 'ACTIVE'
        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d))
        mox.Replay(get)
        instance.state_set(instance.SUSPEND, instance.COMPLETE)

        scheduler.TaskRunner(instance.resume)()
        self.assertEqual((instance.RESUME, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_status_suspend_wait(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_suspend_wait')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to SUSPENDED, but
        # return the ACTIVE state first (twice, so we sleep)
        d1 = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d2 = copy.deepcopy(d1)
        d1['server']['status'] = 'ACTIVE'
        d2['server']['status'] = 'SUSPENDED'
        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d1))
        get().AndReturn((200, d1))
        get().AndReturn((200, d2))
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.suspend)()
        self.assertEqual((instance.SUSPEND, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_status_resume_wait(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_resume_wait')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to ACTIVE, but
        # return the SUSPENDED state first (twice, so we sleep)
        d1 = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d2 = copy.deepcopy(d1)
        d1['server']['status'] = 'SUSPENDED'
        d2['server']['status'] = 'ACTIVE'
        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d1))
        get().AndReturn((200, d1))
        get().AndReturn((200, d2))
        self.m.ReplayAll()

        instance.state_set(instance.SUSPEND, instance.COMPLETE)

        scheduler.TaskRunner(instance.resume)()
        self.assertEqual((instance.RESUME, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_suspend_volumes_step(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_suspend_vol')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to SUSPENDED
        d = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d['server']['status'] = 'SUSPENDED'

        # Return a dummy PollingTaskGroup to make check_suspend_complete step
        def dummy_detach():
            yield
        dummy_tg = scheduler.PollingTaskGroup([dummy_detach, dummy_detach])
        self.m.StubOutWithMock(instance, '_detach_volumes_task')
        instance._detach_volumes_task().AndReturn(dummy_tg)

        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d))
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.suspend)()
        self.assertEqual((instance.SUSPEND, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_resume_volumes_step(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_resume_vol')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to ACTIVE
        d = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d['server']['status'] = 'ACTIVE'

        # Return a dummy PollingTaskGroup to make check_resume_complete step
        def dummy_attach():
            yield
        dummy_tg = scheduler.PollingTaskGroup([dummy_attach, dummy_attach])
        self.m.StubOutWithMock(instance, '_attach_volumes_task')
        instance._attach_volumes_task().AndReturn(dummy_tg)

        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d))

        self.m.ReplayAll()

        instance.state_set(instance.SUSPEND, instance.COMPLETE)

        scheduler.TaskRunner(instance.resume)()
        self.assertEqual((instance.RESUME, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_suspend_volumes_wait(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'in_suspend_vol')

        instance.resource_id = '1234'
        self.m.ReplayAll()

        # Override the get_servers_1234 handler status to SUSPENDED, but keep
        # it ACTIVE for the first two iterations of check_suspend_complete.
        d1 = {'server': self.fc.client.get_servers_detail()[1]['servers'][0]}
        d2 = copy.deepcopy(d1)
        d1['server']['status'] = 'ACTIVE'
        d2['server']['status'] = 'SUSPENDED'

        # Return a dummy PollingTaskGroup to make check_suspend_complete step
        def dummy_detach():
            yield
        dummy_tg = scheduler.PollingTaskGroup([dummy_detach, dummy_detach])
        self.m.StubOutWithMock(instance, '_detach_volumes_task')
        instance._detach_volumes_task().AndReturn(dummy_tg)

        self.m.StubOutWithMock(self.fc.client, 'get_servers_1234')
        get = self.fc.client.get_servers_1234
        get().AndReturn((200, d1))
        get().AndReturn((200, d1))
        get().AndReturn((200, d2))
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.suspend)()
        self.assertEqual((instance.SUSPEND, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_instance_status_build_spawning(self):
        self._test_instance_status_not_build_active('BUILD(SPAWNING)')

    def test_instance_status_hard_reboot(self):
        self._test_instance_status_not_build_active('HARD_REBOOT')

    def test_instance_status_password(self):
        self._test_instance_status_not_build_active('PASSWORD')

    def test_instance_status_reboot(self):
        self._test_instance_status_not_build_active('REBOOT')

    def test_instance_status_rescue(self):
        self._test_instance_status_not_build_active('RESCUE')

    def test_instance_status_resize(self):
        self._test_instance_status_not_build_active('RESIZE')

    def test_instance_status_revert_resize(self):
        self._test_instance_status_not_build_active('REVERT_RESIZE')

    def test_instance_status_shutoff(self):
        self._test_instance_status_not_build_active('SHUTOFF')

    def test_instance_status_suspended(self):
        self._test_instance_status_not_build_active('SUSPENDED')

    def test_instance_status_verify_resize(self):
        self._test_instance_status_not_build_active('VERIFY_RESIZE')

    def _test_instance_status_not_build_active(self, uncommon_status):
        return_server = self.fc.servers.list()[0]
        instance = self._setup_test_instance(return_server,
                                             'in_sts_bld')
        instance.resource_id = '1234'

        # Bind fake get method which Instance.check_create_complete will call
        def activate_status(server):
            if hasattr(server, '_test_check_iterations'):
                server._test_check_iterations += 1
            else:
                server._test_check_iterations = 1
            if server._test_check_iterations == 1:
                server.status = uncommon_status
            if server._test_check_iterations > 2:
                server.status = 'ACTIVE'
        return_server.get = activate_status.__get__(return_server)
        self.m.ReplayAll()

        scheduler.TaskRunner(instance.create)()
        self.assertEqual((instance.CREATE, instance.COMPLETE), instance.state)

        self.m.VerifyAll()

    def test_build_nics(self):
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'build_nics')

        self.assertIsNone(instance._build_nics([]))
        self.assertIsNone(instance._build_nics(None))
        self.assertEqual([
            {'port-id': 'id3'}, {'port-id': 'id1'}, {'port-id': 'id2'}],
            instance._build_nics([
                'id3', 'id1', 'id2']))
        self.assertEqual(
            [{'port-id': 'id1'},
             {'port-id': 'id2'},
             {'port-id': 'id3'}],
            instance._build_nics([
                {'NetworkInterfaceId': 'id3', 'DeviceIndex': '3'},
                {'NetworkInterfaceId': 'id1', 'DeviceIndex': '1'},
                {'NetworkInterfaceId': 'id2', 'DeviceIndex': 2},
            ]))
        self.assertEqual(
            [{'port-id': 'id1'},
             {'port-id': 'id2'},
             {'port-id': 'id3'},
             {'port-id': 'id4'},
             {'port-id': 'id5'}],
            instance._build_nics([
                {'NetworkInterfaceId': 'id3', 'DeviceIndex': '3'},
                {'NetworkInterfaceId': 'id1', 'DeviceIndex': '1'},
                {'NetworkInterfaceId': 'id2', 'DeviceIndex': 2},
                'id4',
                'id5']
            ))

    def test_build_nics_with_security_groups(self):
        """
        Test the security groups defined in heat template can be associated
        to a new created port.
        """
        return_server = self.fc.servers.list()[1]
        instance = self._create_test_instance(return_server,
                                              'build_nics2')

        security_groups = ['security_group_1']
        self._test_security_groups(instance, security_groups)

        security_groups = ['0389f747-7785-4757-b7bb-2ab07e4b09c3']
        self._test_security_groups(instance, security_groups, all_uuids=True)

        security_groups = ['0389f747-7785-4757-b7bb-2ab07e4b09c3',
                           '384ccd91-447c-4d83-832c-06974a7d3d05']
        self._test_security_groups(instance, security_groups,
                                   sg='two', all_uuids=True)

        security_groups = ['security_group_1',
                           '384ccd91-447c-4d83-832c-06974a7d3d05']
        self._test_security_groups(instance, security_groups, sg='two')

        security_groups = ['wrong_group_name']
        self._test_security_groups(
            instance,
            security_groups,
            sg='zero',
            get_secgroup_raises=exception.PhysicalResourceNotFound)

        security_groups = ['wrong_group_name',
                           '0389f747-7785-4757-b7bb-2ab07e4b09c3']
        self._test_security_groups(
            instance,
            security_groups,
            get_secgroup_raises=exception.PhysicalResourceNotFound)

        security_groups = ['wrong_group_name', 'security_group_1']
        self._test_security_groups(
            instance,
            security_groups,
            get_secgroup_raises=exception.PhysicalResourceNotFound)

        security_groups = ['duplicate_group_name', 'security_group_1']
        self._test_security_groups(
            instance,
            security_groups,
            get_secgroup_raises=exception.PhysicalResourceNameAmbiguity)

    def _test_security_groups(self, instance, security_groups, sg='one',
                              all_uuids=False, get_secgroup_raises=None):
        fake_groups_list, props = self._get_fake_properties(sg)

        nclient = neutronclient.Client()
        self.m.StubOutWithMock(instance, 'neutron')
        instance.neutron().MultipleTimes().AndReturn(nclient)

        if not all_uuids:
            # list_security_groups only gets called when none of the requested
            # groups look like UUIDs.
            self.m.StubOutWithMock(
                neutronclient.Client, 'list_security_groups')
            neutronclient.Client.list_security_groups().AndReturn(
                fake_groups_list)
        self.m.StubOutWithMock(neutron.NeutronClientPlugin,
                               'network_id_from_subnet_id')
        neutron.NeutronClientPlugin.network_id_from_subnet_id(
            'fake_subnet_id').MultipleTimes().AndReturn('fake_network_id')

        if not get_secgroup_raises:
            self.m.StubOutWithMock(neutronclient.Client, 'create_port')
            neutronclient.Client.create_port(
                {'port': props}).MultipleTimes().AndReturn(
                    {'port': {'id': 'fake_port_id'}})
        self.stub_keystoneclient()
        self.m.ReplayAll()

        if get_secgroup_raises:
            self.assertRaises(get_secgroup_raises, instance._build_nics, None,
                              security_groups=security_groups,
                              subnet_id='fake_subnet_id')
        else:
            self.assertEqual(
                [{'port-id': 'fake_port_id'}],
                instance._build_nics(None,
                                     security_groups=security_groups,
                                     subnet_id='fake_subnet_id'))

        self.m.VerifyAll()
        self.m.UnsetStubs()

    def _get_fake_properties(self, sg='one'):
        fake_groups_list = {
            'security_groups': [
                {
                    'tenant_id': 'test_tenant_id',
                    'id': '0389f747-7785-4757-b7bb-2ab07e4b09c3',
                    'name': 'security_group_1',
                    'security_group_rules': [],
                    'description': 'no protocol'
                },
                {
                    'tenant_id': 'test_tenant_id',
                    'id': '384ccd91-447c-4d83-832c-06974a7d3d05',
                    'name': 'security_group_2',
                    'security_group_rules': [],
                    'description': 'no protocol'
                },
                {
                    'tenant_id': 'test_tenant_id',
                    'id': 'e91a0007-06a6-4a4a-8edb-1d91315eb0ef',
                    'name': 'duplicate_group_name',
                    'security_group_rules': [],
                    'description': 'no protocol'
                },
                {
                    'tenant_id': 'test_tenant_id',
                    'id': '8be37f3c-176d-4826-aa17-77d1d9df7b2e',
                    'name': 'duplicate_group_name',
                    'security_group_rules': [],
                    'description': 'no protocol'
                }
            ]
        }

        fixed_ip = {'subnet_id': 'fake_subnet_id'}
        props = {
            'admin_state_up': True,
            'network_id': 'fake_network_id',
            'fixed_ips': [fixed_ip],
            'security_groups': ['0389f747-7785-4757-b7bb-2ab07e4b09c3']
        }

        if sg == 'zero':
            props['security_groups'] = []
        elif sg == 'one':
            props['security_groups'] = ['0389f747-7785-4757-b7bb-2ab07e4b09c3']
        elif sg == 'two':
            props['security_groups'] = ['0389f747-7785-4757-b7bb-2ab07e4b09c3',
                                        '384ccd91-447c-4d83-832c-06974a7d3d05']

        return fake_groups_list, props

    def test_instance_without_ip_address(self):
        return_server = self.fc.servers.list()[3]
        instance = self._create_test_instance(return_server,
                                              'wo_ipaddr')

        self.assertEqual('0.0.0.0', instance.FnGetAtt('PrivateIp'))

    def test_default_instance_user(self):
        """The default value for instance_user in heat.conf is ec2-user."""
        return_server = self.fc.servers.list()[1]
        instance = self._setup_test_instance(return_server, 'default_user')
        metadata = instance.metadata_get()
        self.m.StubOutWithMock(nova.NovaClientPlugin, 'build_userdata')
        nova.NovaClientPlugin.build_userdata(
            metadata, 'wordpress', 'ec2-user')
        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()
        self.m.VerifyAll()

    def test_custom_instance_user(self):
        """Test instance_user in heat.conf being set to a custom value.

        Launching the instance should call build_userdata with the custom user
        name.

        This option is deprecated and will be removed in Juno.
        """
        return_server = self.fc.servers.list()[1]
        instance = self._setup_test_instance(return_server, 'custom_user')
        self.m.StubOutWithMock(instances.cfg.CONF, 'instance_user')
        instances.cfg.CONF.instance_user = 'custom_user'
        metadata = instance.metadata_get()
        self.m.StubOutWithMock(nova.NovaClientPlugin, 'build_userdata')
        nova.NovaClientPlugin.build_userdata(
            metadata, 'wordpress', 'custom_user')
        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()
        self.m.VerifyAll()

    def test_empty_instance_user(self):
        """Test instance_user in heat.conf being empty.

        Launching the instance should call build_userdata with
        "ec2-user".

        This behaviour is compatible with CloudFormation and will be
        the default in Juno once the instance_user option gets removed.
        """
        return_server = self.fc.servers.list()[1]
        instance = self._setup_test_instance(return_server, 'empty_user')
        self.m.StubOutWithMock(instances.cfg.CONF, 'instance_user')
        instances.cfg.CONF.instance_user = ''
        metadata = instance.metadata_get()
        self.m.StubOutWithMock(nova.NovaClientPlugin, 'build_userdata')
        nova.NovaClientPlugin.build_userdata(
            metadata, 'wordpress', 'ec2-user')
        self.m.ReplayAll()
        scheduler.TaskRunner(instance.create)()
        self.m.VerifyAll()
