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# Copyright (c) 2012 OpenStack Foundation.

#

# 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 contextlib

import mock

import webob.exc as wexc

from neutron.api.v2 import base

from neutron.common import constants as n_const

from neutron import context

from neutron.extensions import portbindings

from neutron.manager import NeutronManager

from neutron.openstack.common import log as logging

from neutron.plugins.common import constants as p_const

from neutron.plugins.ml2 import config as ml2_config

from neutron.plugins.ml2 import driver_api as api

from neutron.plugins.ml2 import driver_context

from neutron.plugins.ml2.drivers.cisco.nexus import config as cisco_config

from neutron.plugins.ml2.drivers.cisco.nexus import exceptions as c_exc

from neutron.plugins.ml2.drivers.cisco.nexus import mech_cisco_nexus

from neutron.plugins.ml2.drivers.cisco.nexus import nexus_db_v2

from neutron.plugins.ml2.drivers.cisco.nexus import nexus_network_driver

from neutron.plugins.ml2.drivers import type_vlan as vlan_config

from neutron.tests.unit import test_db_plugin

LOG = logging.getLogger(__name__)

ML2_PLUGIN = 'neutron.plugins.ml2.plugin.Ml2Plugin'

PHYS_NET = 'physnet1'

COMP_HOST_NAME = 'testhost'

COMP_HOST_NAME_2 = 'testhost_2'

VLAN_START = 1000

VLAN_END = 1100

NEXUS_IP_ADDR = '1.1.1.1'

NETWORK_NAME = 'test_network'

NETWORK_NAME_2 = 'test_network_2'

NEXUS_INTERFACE = '1/1'

NEXUS_INTERFACE_2 = '1/2'

CIDR_1 = '10.0.0.0/24'

CIDR_2 = '10.0.1.0/24'

DEVICE_ID_1 = '11111111-1111-1111-1111-111111111111'

DEVICE_ID_2 = '22222222-2222-2222-2222-222222222222'

DEVICE_OWNER = 'compute:None'

BOUND_SEGMENT1 = {api.NETWORK_TYPE: p_const.TYPE_VLAN,

api.PHYSICAL_NETWORK: PHYS_NET,

api.SEGMENTATION_ID: VLAN_START}

BOUND_SEGMENT2 = {api.NETWORK_TYPE: p_const.TYPE_VLAN,

api.PHYSICAL_NETWORK: PHYS_NET,

api.SEGMENTATION_ID: VLAN_START + 1}

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class CiscoML2MechanismTestCase(test_db_plugin.NeutronDbPluginV2TestCase):

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    def setUp(self):

        """Configure for end-to-end neutron testing using a mock ncclient.

        This setup includes:

        - Configure the ML2 plugin to use VLANs in the range of 1000-1100.

        - Configure the Cisco mechanism driver to use an imaginary switch

          at NEXUS_IP_ADDR.

        - Create a mock NETCONF client (ncclient) for the Cisco mechanism

          driver

        """

        # Configure the ML2 mechanism drivers and network types

        ml2_opts = {

            'mechanism_drivers': ['cisco_nexus'],

            'tenant_network_types': ['vlan'],

        }

        for opt, val in ml2_opts.items():

                ml2_config.cfg.CONF.set_override(opt, val, 'ml2')

        # Configure the ML2 VLAN parameters

        phys_vrange = ':'.join([PHYS_NET, str(VLAN_START), str(VLAN_END)])

        vlan_config.cfg.CONF.set_override('network_vlan_ranges',

                                          [phys_vrange],

                                          'ml2_type_vlan')

        # Configure the Cisco Nexus mechanism driver

        nexus_config = {

            (NEXUS_IP_ADDR, 'username'): 'admin',

            (NEXUS_IP_ADDR, 'password'): 'mySecretPassword',

            (NEXUS_IP_ADDR, 'ssh_port'): 22,

            (NEXUS_IP_ADDR, COMP_HOST_NAME): NEXUS_INTERFACE,

            (NEXUS_IP_ADDR, COMP_HOST_NAME_2): NEXUS_INTERFACE_2}

        nexus_patch = mock.patch.dict(

            cisco_config.ML2MechCiscoConfig.nexus_dict,

            nexus_config)

        nexus_patch.start()

        self.addCleanup(nexus_patch.stop)

        # The NETCONF client module is not included in the DevStack

        # distribution, so mock this module for unit testing.

        self.mock_ncclient = mock.Mock()

        mock.patch.object(nexus_network_driver.CiscoNexusDriver,

                          '_import_ncclient',

                          return_value=self.mock_ncclient).start()

        # Mock port context values for bound_segments and 'status'.

        self.mock_bound_segment = mock.patch.object(

            driver_context.PortContext,

            'bound_segment',

            new_callable=mock.PropertyMock).start()

        self.mock_bound_segment.return_value = BOUND_SEGMENT1

        self.mock_original_bound_segment = mock.patch.object(

            driver_context.PortContext,

            'original_bound_segment',

            new_callable=mock.PropertyMock).start()

        self.mock_original_bound_segment.return_value = None

        mock_status = mock.patch.object(

            mech_cisco_nexus.CiscoNexusMechanismDriver,

            '_is_status_active').start()

        mock_status.return_value = n_const.PORT_STATUS_ACTIVE

        super(CiscoML2MechanismTestCase, self).setUp(ML2_PLUGIN)

        self.port_create_status = 'DOWN'

    @contextlib.contextmanager

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    def _patch_ncclient(self, attr, value):

        """Configure an attribute on the mock ncclient module.

        This method can be used to inject errors by setting a side effect

        or a return value for an ncclient method.

        :param attr: ncclient attribute (typically method) to be configured.

        :param value: Value to be configured on the attribute.

        """

        # Configure attribute.

        config = {attr: value}

        self.mock_ncclient.configure_mock(**config)

        # Continue testing

        yield

        # Unconfigure attribute

        config = {attr: None}

        self.mock_ncclient.configure_mock(**config)

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    def _is_in_nexus_cfg(self, words):

        """Check if any config sent to Nexus contains all words in a list."""

        for call in (self.mock_ncclient.connect.return_value.

                     edit_config.mock_calls):

            configlet = call[2]['config']

            if all(word in configlet for word in words):

                return True

        return False

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    def _is_in_last_nexus_cfg(self, words):

        """Confirm last config sent to Nexus contains specified keywords."""

        last_cfg = (self.mock_ncclient.connect.return_value.

                    edit_config.mock_calls[-1][2]['config'])

        return all(word in last_cfg for word in words)

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    def _is_vlan_configured(self, vlan_creation_expected=True,

                            add_keyword_expected=False):

        vlan_created = self._is_in_nexus_cfg(['vlan', 'vlan-name'])

        add_appears = self._is_in_last_nexus_cfg(['add'])

        return (self._is_in_last_nexus_cfg(['allowed', 'vlan']) and

                vlan_created == vlan_creation_expected and

                add_appears == add_keyword_expected)

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    def _is_vlan_unconfigured(self, vlan_deletion_expected=True):

        vlan_deleted = self._is_in_last_nexus_cfg(

            ['no', 'vlan', 'vlan-id-create-delete'])

        return (self._is_in_nexus_cfg(['allowed', 'vlan', 'remove']) and

                vlan_deleted == vlan_deletion_expected)

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class TestCiscoBasicGet(CiscoML2MechanismTestCase, test_db_plugin.TestBasicGet):

pass

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class TestCiscoV2HTTPResponse(CiscoML2MechanismTestCase, test_db_plugin.TestV2HTTPResponse):

pass

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class TestCiscoPortsV2(CiscoML2MechanismTestCase, test_db_plugin.TestPortsV2):

@contextlib.contextmanager

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    def _create_resources(self, name=NETWORK_NAME, cidr=CIDR_1,

                          device_id=DEVICE_ID_1,

                          host_id=COMP_HOST_NAME):

        """Create network, subnet, and port resources for test cases.

        Create a network, subnet, port and then update the port, yield the

        result, then delete the port, subnet and network.

        :param name: Name of network to be created.

        :param cidr: cidr address of subnetwork to be created.

        :param device_id: Device ID to use for port to be created/updated.

        :param host_id: Host ID to use for port create/update.

        """

        with self.network(name=name) as network:

            with self.subnet(network=network, cidr=cidr) as subnet:

                with self.port(subnet=subnet, cidr=cidr) as port:

                    data = {'port': {portbindings.HOST_ID: host_id,

                                     'device_id': device_id,

                                     'device_owner': 'compute:none',

                                     'admin_state_up': True}}

                    req = self.new_update_request('ports', data,

                                                  port['port']['id'])

                    yield req.get_response(self.api)

**** CubicPower OpenStack Study ****

    def _assertExpectedHTTP(self, status, exc):

        """Confirm that an HTTP status corresponds to an expected exception.

        Confirm that an HTTP status which has been returned for an

        neutron API request matches the HTTP status corresponding

        to an expected exception.

        :param status: HTTP status

        :param exc: Expected exception

        """

        if exc in base.FAULT_MAP:

            expected_http = base.FAULT_MAP[exc].code

        else:

            expected_http = wexc.HTTPInternalServerError.code

        self.assertEqual(status, expected_http)

**** CubicPower OpenStack Study ****

    def test_create_ports_bulk_emulated_plugin_failure(self):

        real_has_attr = hasattr

        #ensures the API chooses the emulation code path

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            plugin_obj = NeutronManager.get_plugin()

            orig = plugin_obj.create_port

            with mock.patch.object(plugin_obj,

                                   'create_port') as patched_plugin:

                def side_effect(*args, **kwargs):

                    return self._do_side_effect(patched_plugin, orig,

                                                *args, **kwargs)

                patched_plugin.side_effect = side_effect

                with self.network() as net:

                    res = self._create_port_bulk(self.fmt, 2,

                                                 net['network']['id'],

                                                 'test',

                                                 True)

                    # Expect an internal server error as we injected a fault

                    self._validate_behavior_on_bulk_failure(

                        res,

                        'ports',

                        wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            plugin_obj = NeutronManager.get_plugin()

            orig = plugin_obj.create_port

            with mock.patch.object(plugin_obj,

                                   'create_port') as patched_plugin:

                def side_effect(*args, **kwargs):

                    return self._do_side_effect(patched_plugin, orig,

                                                *args, **kwargs)

                patched_plugin.side_effect = side_effect

                with self.network() as net:

                    res = self._create_port_bulk(self.fmt, 2,

                                                 net['network']['id'],

                                                 'test',

                                                 True)

                    # Expect an internal server error as we injected a fault

                    self._validate_behavior_on_bulk_failure(

                        res,

                        'ports',

                        wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

    def test_create_ports_bulk_native(self):

        if self._skip_native_bulk:

            self.skipTest("Plugin does not support native bulk port create")

**** CubicPower OpenStack Study ****

    def test_create_ports_bulk_emulated(self):

        if self._skip_native_bulk:

            self.skipTest("Plugin does not support native bulk port create")

**** CubicPower OpenStack Study ****

    def test_create_ports_bulk_native_plugin_failure(self):

        if self._skip_native_bulk:

            self.skipTest("Plugin does not support native bulk port create")

        ctx = context.get_admin_context()

        with self.network() as net:

            plugin_obj = NeutronManager.get_plugin()

            orig = plugin_obj.create_port

            with mock.patch.object(plugin_obj,

                                   'create_port') as patched_plugin:

                def side_effect(*args, **kwargs):

                    return self._do_side_effect(patched_plugin, orig,

                                                *args, **kwargs)

                patched_plugin.side_effect = side_effect

                res = self._create_port_bulk(self.fmt, 2, net['network']['id'],

                                             'test', True, context=ctx)

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'ports',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

    def test_nexus_enable_vlan_cmd(self):

        """Verify the syntax of the command to enable a vlan on an intf.

        Confirm that for the first VLAN configured on a Nexus interface,

        the command string sent to the switch does not contain the

        keyword 'add'.

        Confirm that for the second VLAN configured on a Nexus interface,

        the command string sent to the switch contains the keyword 'add'.

        """

        # First vlan should be configured without 'add' keyword

        with self._create_resources():

            self.assertTrue(self._is_vlan_configured(

                vlan_creation_expected=True,

                add_keyword_expected=False))

            self.mock_ncclient.reset_mock()

            self.mock_bound_segment.return_value = BOUND_SEGMENT2

            # Second vlan should be configured with 'add' keyword

            with self._create_resources(name=NETWORK_NAME_2,

                                        device_id=DEVICE_ID_2,

                                        cidr=CIDR_2):

                self.assertTrue(self._is_vlan_configured(

                    vlan_creation_expected=True,

                    add_keyword_expected=True))

            # Return to first segment for delete port calls.

            self.mock_bound_segment.return_value = BOUND_SEGMENT1

**** CubicPower OpenStack Study ****

    def test_nexus_connect_fail(self):

        """Test failure to connect to a Nexus switch.

        While creating a network, subnet, and port, simulate a connection

        failure to a nexus switch. Confirm that the expected HTTP code

        is returned for the create port operation.

        """

        with self._patch_ncclient('connect.side_effect',

                                  AttributeError):

            with self._create_resources() as result:

                self._assertExpectedHTTP(result.status_int,

                                         c_exc.NexusConnectFailed)

**** CubicPower OpenStack Study ****

    def test_nexus_vlan_config_two_hosts(self):

        """Verify config/unconfig of vlan on two compute hosts."""

        @contextlib.contextmanager

        def _create_port_check_vlan(comp_host_name, device_id,

                                    vlan_creation_expected=True):

            with self.port(subnet=subnet, fmt=self.fmt) as port:

                data = {'port': {portbindings.HOST_ID: comp_host_name,

                                 'device_id': device_id,

                                 'device_owner': DEVICE_OWNER,

                                 'admin_state_up': True}}

                req = self.new_update_request('ports', data,

                                              port['port']['id'])

                req.get_response(self.api)

                self.assertTrue(self._is_vlan_configured(

                    vlan_creation_expected=vlan_creation_expected,

                    add_keyword_expected=False))

                self.mock_ncclient.reset_mock()

                yield

        # Create network and subnet

        with self.network(name=NETWORK_NAME) as network:

            with self.subnet(network=network, cidr=CIDR_1) as subnet:

                # Create an instance on first compute host

                with _create_port_check_vlan(COMP_HOST_NAME, DEVICE_ID_1,

                                             vlan_creation_expected=True):

                    # Create an instance on second compute host

                    with _create_port_check_vlan(COMP_HOST_NAME_2, DEVICE_ID_2,

                                                 vlan_creation_expected=False):

                        pass

                    # Instance on second host is now terminated.

                    # Vlan should be untrunked from port, but vlan should

                    # still exist on the switch.

                    self.assertTrue(self._is_vlan_unconfigured(

                        vlan_deletion_expected=False))

                    self.mock_ncclient.reset_mock()

                # Instance on first host is now terminated.

                # Vlan should be untrunked from port and vlan should have

                # been deleted from the switch.

                self.assertTrue(self._is_vlan_unconfigured(

                    vlan_deletion_expected=True))

**** CubicPower OpenStack Study ****

        def _create_port_check_vlan(comp_host_name, device_id,

                                    vlan_creation_expected=True):

            with self.port(subnet=subnet, fmt=self.fmt) as port:

                data = {'port': {portbindings.HOST_ID: comp_host_name,

                                 'device_id': device_id,

                                 'device_owner': DEVICE_OWNER,

                                 'admin_state_up': True}}

                req = self.new_update_request('ports', data,

                                              port['port']['id'])

                req.get_response(self.api)

                self.assertTrue(self._is_vlan_configured(

                    vlan_creation_expected=vlan_creation_expected,

                    add_keyword_expected=False))

                self.mock_ncclient.reset_mock()

                yield

        # Create network and subnet

        with self.network(name=NETWORK_NAME) as network:

            with self.subnet(network=network, cidr=CIDR_1) as subnet:

                # Create an instance on first compute host

                with _create_port_check_vlan(COMP_HOST_NAME, DEVICE_ID_1,

                                             vlan_creation_expected=True):

                    # Create an instance on second compute host

                    with _create_port_check_vlan(COMP_HOST_NAME_2, DEVICE_ID_2,

                                                 vlan_creation_expected=False):

                        pass

                    # Instance on second host is now terminated.

                    # Vlan should be untrunked from port, but vlan should

                    # still exist on the switch.

                    self.assertTrue(self._is_vlan_unconfigured(

                        vlan_deletion_expected=False))

                    self.mock_ncclient.reset_mock()

                # Instance on first host is now terminated.

                # Vlan should be untrunked from port and vlan should have

                # been deleted from the switch.

                self.assertTrue(self._is_vlan_unconfigured(

                    vlan_deletion_expected=True))

**** CubicPower OpenStack Study ****

    def test_nexus_vm_migration(self):

        """Verify VM (live) migration.

        Simulate the following:

        Nova informs neutron of live-migration with port-update(new host).

        This should trigger two update_port_pre/postcommit() calls.

        The first one should only change the current host_id and remove the

        binding resulting in the mechanism drivers receiving:

          PortContext.original['binding:host_id']: previous value

          PortContext.original_bound_segment: previous value

          PortContext.current['binding:host_id']: current (new) value

          PortContext.bound_segment: None

        The second one binds the new host resulting in the mechanism

        drivers receiving:

          PortContext.original['binding:host_id']: previous value

          PortContext.original_bound_segment: None

          PortContext.current['binding:host_id']: previous value

          PortContext.bound_segment: new value

        """

        # Create network, subnet and port.

        with self._create_resources() as result:

            # Verify initial database entry.

            # Use port_id to verify that 1st host name was used.

            binding = nexus_db_v2.get_nexusvm_binding(VLAN_START, DEVICE_ID_1)

            self.assertEqual(binding.port_id, NEXUS_INTERFACE)

            port = self.deserialize(self.fmt, result)

            port_id = port['port']['id']

            # Trigger update event to unbind segment.

            # Results in port being deleted from nexus DB and switch.

            data = {'port': {portbindings.HOST_ID: COMP_HOST_NAME_2}}

            self.mock_bound_segment.return_value = None

            self.mock_original_bound_segment.return_value = BOUND_SEGMENT1

            self.new_update_request('ports', data,

                                    port_id).get_response(self.api)

            # Verify that port entry has been deleted.

            self.assertRaises(c_exc.NexusPortBindingNotFound,

                              nexus_db_v2.get_nexusvm_binding,

                              VLAN_START, DEVICE_ID_1)

            # Trigger update event to bind segment with new host.

            self.mock_bound_segment.return_value = BOUND_SEGMENT1

            self.mock_original_bound_segment.return_value = None

            self.new_update_request('ports', data,

                                    port_id).get_response(self.api)

            # Verify that port entry has been added using new host name.

            # Use port_id to verify that 2nd host name was used.

            binding = nexus_db_v2.get_nexusvm_binding(VLAN_START, DEVICE_ID_1)

            self.assertEqual(binding.port_id, NEXUS_INTERFACE_2)

**** CubicPower OpenStack Study ****

    def test_nexus_config_fail(self):

        """Test a Nexus switch configuration failure.

        While creating a network, subnet, and port, simulate a nexus

        switch configuration error. Confirm that the expected HTTP code

        is returned for the create port operation.

        """

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            AttributeError):

            with self._create_resources() as result:

                self._assertExpectedHTTP(result.status_int,

                                         c_exc.NexusConfigFailed)

**** CubicPower OpenStack Study ****

    def test_nexus_extended_vlan_range_failure(self):

        """Test that extended VLAN range config errors are ignored.

        Some versions of Nexus switch do not allow state changes for

        the extended VLAN range (1006-4094), but these errors can be

        ignored (default values are appropriate). Test that such errors

        are ignored by the Nexus plugin.

        """

        def mock_edit_config_a(target, config):

            if all(word in config for word in ['state', 'active']):

                raise Exception("Can't modify state for extended")

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config_a):

            with self._create_resources() as result:

                self.assertEqual(result.status_int, wexc.HTTPOk.code)

        def mock_edit_config_b(target, config):

            if all(word in config for word in ['no', 'shutdown']):

                raise Exception("Command is only allowed on VLAN")

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config_b):

            with self._create_resources() as result:

                self.assertEqual(result.status_int, wexc.HTTPOk.code)

**** CubicPower OpenStack Study ****

        def mock_edit_config_a(target, config):

            if all(word in config for word in ['state', 'active']):

                raise Exception("Can't modify state for extended")

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config_a):

            with self._create_resources() as result:

                self.assertEqual(result.status_int, wexc.HTTPOk.code)

**** CubicPower OpenStack Study ****

        def mock_edit_config_b(target, config):

            if all(word in config for word in ['no', 'shutdown']):

                raise Exception("Command is only allowed on VLAN")

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config_b):

            with self._create_resources() as result:

                self.assertEqual(result.status_int, wexc.HTTPOk.code)

**** CubicPower OpenStack Study ****

    def test_nexus_vlan_config_rollback(self):

        """Test rollback following Nexus VLAN state config failure.

        Test that the Cisco Nexus plugin correctly deletes the VLAN

        on the Nexus switch when the 'state active' command fails (for

        a reason other than state configuration change is rejected

        for the extended VLAN range).

        """

        def mock_edit_config(target, config):

            if all(word in config for word in ['state', 'active']):

                raise ValueError

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config):

            with self._create_resources() as result:

                # Confirm that the last configuration sent to the Nexus

                # switch was deletion of the VLAN.

                self.assertTrue(self._is_in_last_nexus_cfg(['', '']))

                self._assertExpectedHTTP(result.status_int,

                                         c_exc.NexusConfigFailed)

**** CubicPower OpenStack Study ****

        def mock_edit_config(target, config):

            if all(word in config for word in ['state', 'active']):

                raise ValueError

        with self._patch_ncclient(

            'connect.return_value.edit_config.side_effect',

            mock_edit_config):

            with self._create_resources() as result:

                # Confirm that the last configuration sent to the Nexus

                # switch was deletion of the VLAN.

                self.assertTrue(self._is_in_last_nexus_cfg(['', '']))

                self._assertExpectedHTTP(result.status_int,

                                         c_exc.NexusConfigFailed)

**** CubicPower OpenStack Study ****

    def test_nexus_host_not_configured(self):

        """Test handling of a NexusComputeHostNotConfigured exception.

        Test the Cisco NexusComputeHostNotConfigured exception by using

        a fictitious host name during port creation.

        """

        with self._create_resources(host_id='fake_host') as result:

            self._assertExpectedHTTP(result.status_int,

                                     c_exc.NexusComputeHostNotConfigured)

**** CubicPower OpenStack Study ****

    def test_nexus_missing_fields(self):

        """Test handling of a NexusMissingRequiredFields exception.

        Test the Cisco NexusMissingRequiredFields exception by using

        empty host_id and device_id values during port creation.

        """

        with self._create_resources(device_id='', host_id='') as result:

            self._assertExpectedHTTP(result.status_int,

                                     c_exc.NexusMissingRequiredFields)

**** CubicPower OpenStack Study ****

class TestCiscoNetworksV2(CiscoML2MechanismTestCase, test_db_plugin.TestNetworksV2):

**** CubicPower OpenStack Study ****

    def test_create_networks_bulk_emulated_plugin_failure(self):

        real_has_attr = hasattr

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        plugin_obj = NeutronManager.get_plugin()

        orig = plugin_obj.create_network

        #ensures the API choose the emulation code path

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            with mock.patch.object(plugin_obj,

                                   'create_network') as patched_plugin:

                def side_effect(*args, **kwargs):

                    return self._do_side_effect(patched_plugin, orig,

                                                *args, **kwargs)

                patched_plugin.side_effect = side_effect

                res = self._create_network_bulk(self.fmt, 2, 'test', True)

                LOG.debug("response is %s" % res)

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'networks',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        plugin_obj = NeutronManager.get_plugin()

        orig = plugin_obj.create_network

        #ensures the API choose the emulation code path

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            with mock.patch.object(plugin_obj,

                                   'create_network') as patched_plugin:

                def side_effect(*args, **kwargs):

                    return self._do_side_effect(patched_plugin, orig,

                                                *args, **kwargs)

                patched_plugin.side_effect = side_effect

                res = self._create_network_bulk(self.fmt, 2, 'test', True)

                LOG.debug("response is %s" % res)

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'networks',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

    def test_create_networks_bulk_native_plugin_failure(self):

        if self._skip_native_bulk:

            self.skipTest("Plugin does not support native bulk network create")

        plugin_obj = NeutronManager.get_plugin()

        orig = plugin_obj.create_network

        with mock.patch.object(plugin_obj,

                               'create_network') as patched_plugin:

            def side_effect(*args, **kwargs):

                return self._do_side_effect(patched_plugin, orig,

                                            *args, **kwargs)

            patched_plugin.side_effect = side_effect

            res = self._create_network_bulk(self.fmt, 2, 'test', True)

            # We expect an internal server error as we injected a fault

            self._validate_behavior_on_bulk_failure(

                res,

                'networks',

                wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

class TestCiscoSubnetsV2(CiscoML2MechanismTestCase, test_db_plugin.TestSubnetsV2):

**** CubicPower OpenStack Study ****

    def test_create_subnets_bulk_emulated_plugin_failure(self):

        real_has_attr = hasattr

        #ensures the API choose the emulation code path

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            plugin_obj = NeutronManager.get_plugin()

            orig = plugin_obj.create_subnet

            with mock.patch.object(plugin_obj,

                                   'create_subnet') as patched_plugin:

                def side_effect(*args, **kwargs):

                    self._do_side_effect(patched_plugin, orig,

                                         *args, **kwargs)

                patched_plugin.side_effect = side_effect

                with self.network() as net:

                    res = self._create_subnet_bulk(self.fmt, 2,

                                                   net['network']['id'],

                                                   'test')

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'subnets',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

        def fakehasattr(item, attr):

            if attr.endswith('__native_bulk_support'):

                return False

            return real_has_attr(item, attr)

        with mock.patch('__builtin__.hasattr',

                        new=fakehasattr):

            plugin_obj = NeutronManager.get_plugin()

            orig = plugin_obj.create_subnet

            with mock.patch.object(plugin_obj,

                                   'create_subnet') as patched_plugin:

                def side_effect(*args, **kwargs):

                    self._do_side_effect(patched_plugin, orig,

                                         *args, **kwargs)

                patched_plugin.side_effect = side_effect

                with self.network() as net:

                    res = self._create_subnet_bulk(self.fmt, 2,

                                                   net['network']['id'],

                                                   'test')

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'subnets',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

    def test_create_subnets_bulk_native_plugin_failure(self):

        if self._skip_native_bulk:

            self.skipTest("Plugin does not support native bulk subnet create")

        plugin_obj = NeutronManager.get_plugin()

        orig = plugin_obj.create_subnet

        with mock.patch.object(plugin_obj,

                               'create_subnet') as patched_plugin:

            def side_effect(*args, **kwargs):

                return self._do_side_effect(patched_plugin, orig,

                                            *args, **kwargs)

            patched_plugin.side_effect = side_effect

            with self.network() as net:

                res = self._create_subnet_bulk(self.fmt, 2,

                                               net['network']['id'],

                                               'test')

                # We expect an internal server error as we injected a fault

                self._validate_behavior_on_bulk_failure(

                    res,

                    'subnets',

                    wexc.HTTPInternalServerError.code)

**** CubicPower OpenStack Study ****

class TestCiscoPortsV2XML(TestCiscoPortsV2):

fmt = 'xml'

**** CubicPower OpenStack Study ****

class TestCiscoNetworksV2XML(TestCiscoNetworksV2):

fmt = 'xml'

**** CubicPower OpenStack Study ****

class TestCiscoSubnetsV2XML(TestCiscoSubnetsV2):

fmt = 'xml'