Add terminate vnf instance API

Implemented terminate vnf instance API.

* GET /vnflcm/v1/vnf_instances/{vnf_instance_id}/terminate

Co-Authored-By: tpatil <tushar.vitthal.patil@gmail.com>
Co-Authored-By: Shubham Potale <shubham.potale@nttdata.com>
Co-Authored-By: Sameer Thakur <sameer.thakur@nttdata.com>
Change-Id: I69b7ef12038aa410db7e50671df2931beb761223
Blueprint: support-etsi-nfv-specs

tacker/api/schemas/vnf_lcm.py

@@ -199,3 +199,14 @@ instantiate = {
     'required': ['flavourId'],
     'additionalProperties': False,
 }
+
+terminate = {
+    'type': 'object',
+    'properties': {
+        'terminationType': {'type': 'string',
+                            'enum': ['FORCEFUL', 'GRACEFUL']},
+        'gracefulTerminationTimeout': {'type': 'integer', 'minimum': 0}
+    },
+    'required': ['terminationType'],
+    'additionalProperties': False,
+}

tacker/api/vnflcm/v1/controller.py

@@ -245,8 +245,29 @@ class VnfLcmController(wsgi.Controller):
 
         self._instantiate(context, vnf_instance, body)
 
+    @check_vnf_state(action="terminate",
+        instantiation_state=[fields.VnfInstanceState.INSTANTIATED],
+        task_state=[None])
+    def _terminate(self, context, vnf_instance, request_body):
+        req_body = utils.convert_camelcase_to_snakecase(request_body)
+        terminate_vnf_req = \
+            objects.TerminateVnfRequest.obj_from_primitive(
+                req_body, context=context)
+
+        vnf_instance.task_state = fields.VnfInstanceTaskState.TERMINATING
+        vnf_instance.save()
+        self.rpc_api.terminate(context, vnf_instance, terminate_vnf_req)
+
+    @wsgi.response(http_client.ACCEPTED)
+    @wsgi.expected_errors((http_client.BAD_REQUEST, http_client.FORBIDDEN,
+                           http_client.NOT_FOUND, http_client.CONFLICT))
+    @validation.schema(vnf_lcm.terminate)
     def terminate(self, request, id, body):
-        raise webob.exc.HTTPNotImplemented()
+        context = request.environ['tacker.context']
+        context.can(vnf_lcm_policies.VNFLCM % 'terminate')
+
+        vnf_instance = self._get_vnf_instance(context, id)
+        self._terminate(context, vnf_instance, body)
 
     def heal(self, request, id, body):
         raise webob.exc.HTTPNotImplemented()

tacker/conductor/conductor_server.py

@@ -424,6 +424,20 @@ class Conductor(manager.Manager):
 
         vnf_package.save()
 
+    def terminate(self, context, vnf_instance, terminate_vnf_req):
+        self.vnflcm_driver.terminate_vnf(context, vnf_instance,
+            terminate_vnf_req)
+
+        vnf_package_vnfd = objects.VnfPackageVnfd.get_by_id(context,
+                vnf_instance.vnfd_id)
+        vnf_package = objects.VnfPackage.get_by_id(context,
+                vnf_package_vnfd.package_uuid, expected_attrs=['vnfd'])
+        try:
+            self._update_package_usage_state(context, vnf_package)
+        except Exception:
+            LOG.error("Failed to update usage_state of vnf package %s",
+                      vnf_package.id)
+
 
 def init(args, **kwargs):
     CONF(args=args, project='tacker',

tacker/conductor/conductorrpc/vnf_lcm_rpc.py

@@ -38,3 +38,14 @@ class VNFLcmRPCAPI(object):
         return rpc_method(context, 'instantiate',
                           vnf_instance=vnf_instance,
                           instantiate_vnf=instantiate_vnf)
+
+    def terminate(self, context, vnf_instance, terminate_vnf_req, cast=True):
+        serializer = objects_base.TackerObjectSerializer()
+
+        client = rpc.get_client(self.target, version_cap=None,
+                                serializer=serializer)
+        cctxt = client.prepare()
+        rpc_method = cctxt.cast if cast else cctxt.call
+        return rpc_method(context, 'terminate',
+                          vnf_instance=vnf_instance,
+                          terminate_vnf_req=terminate_vnf_req)

tacker/objects/__init__.py

@@ -34,3 +34,4 @@ def register_all():
     __import__('tacker.objects.vim_connection')
     __import__('tacker.objects.instantiate_vnf_req')
     __import__('tacker.objects.vnf_resources')
+    __import__('tacker.objects.terminate_vnf_req')

tacker/objects/fields.py

@@ -166,3 +166,14 @@ class IpAddressType(BaseTackerEnum):
 
 class IpAddressTypeField(BaseEnumField):
     AUTO_TYPE = IpAddressType()
+
+
+class VnfInstanceTerminationType(BaseTackerEnum):
+    FORCEFUL = 'FORCEFUL'
+    GRACEFUL = 'GRACEFUL'
+
+    ALL = (FORCEFUL, GRACEFUL)
+
+
+class VnfInstanceTerminationTypeField(BaseEnumField):
+    AUTO_TYPE = VnfInstanceTerminationType()

tacker/objects/terminate_vnf_req.py

@@ -0,0 +1,54 @@
+# Copyright (C) 2020 NTT DATA
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from oslo_log import log as logging
+
+from tacker.objects import base
+from tacker.objects import fields
+
+LOG = logging.getLogger(__name__)
+
+
+@base.TackerObjectRegistry.register
+class TerminateVnfRequest(base.TackerObject, base.TackerPersistentObject):
+    # Version 1.0: Initial version
+    VERSION = '1.0'
+
+    fields = {
+        'termination_type': fields.VnfInstanceTerminationTypeField(
+            nullable=False),
+        'graceful_termination_timeout': fields.IntegerField(nullable=True,
+                                                            default=0)
+    }
+
+    @classmethod
+    def obj_from_primitive(cls, primitive, context):
+        if 'tacker_object.name' in primitive:
+            obj_terminate_vnf_req = super(
+                TerminateVnfRequest, cls).obj_from_primitive(
+                primitive, context)
+        else:
+            obj_terminate_vnf_req = TerminateVnfRequest._from_dict(primitive)
+
+        return obj_terminate_vnf_req
+
+    @classmethod
+    def _from_dict(cls, data_dict):
+        termination_type = data_dict.get('termination_type')
+        graceful_termination_timeout = \
+            data_dict.get('graceful_termination_timeout', 0)
+
+        return cls(termination_type=termination_type,
+                   graceful_termination_timeout=graceful_termination_timeout)

tacker/objects/vnf_instantiated_info.py

@@ -293,6 +293,17 @@ class InstantiatedVnfInfo(base.TackerObject, base.TackerObjectDictCompat,
 
         return data
 
+    def reinitialize(self):
+        # Reinitialize vnf to non instantiated state.
+        self.ext_cp_info = []
+        self.ext_virtual_link_info = []
+        self.ext_managed_virtual_link_info = []
+        self.vnfc_resource_info = []
+        self.vnf_virtual_link_resource_info = []
+        self.virtual_storage_resource_info = []
+        self.instance_id = None
+        self.vnf_state = fields.VnfOperationalStateType.STOPPED
+
 
 @base.TackerObjectRegistry.register
 class VnfExtCpInfo(base.TackerObject, base.TackerObjectDictCompat,

tacker/policies/vnf_lcm.py

@@ -55,6 +55,17 @@ rules = [
             }
         ]
     ),
+    policy.DocumentedRuleDefault(
+        name=VNFLCM % 'terminate',
+        check_str=base.RULE_ADMIN_OR_OWNER,
+        description="Terminate a VNF instance.",
+        operations=[
+            {
+                'method': 'POST',
+                'path': '/vnflcm/v1/vnf_instances/{vnfInstanceId}/terminate'
+            }
+        ]
+    )
 ]
 
 

tacker/tests/unit/conductor/test_conductor_server.py

@@ -29,7 +29,7 @@ import tacker.conf
 from tacker import context
 from tacker.glance_store import store as glance_store
 from tacker import objects
-from tacker.objects import vnf_package
+from tacker.objects import fields
 from tacker.tests.unit.conductor import fakes
 from tacker.tests.unit.db.base import SqlTestCase
 from tacker.tests.unit.objects import fakes as fake_obj
@@ -73,8 +73,8 @@ class TestConductor(SqlTestCase):
             'tacker.vnflcm.vnflcm_driver.VnfLcmDriver', fake_vnflcm_driver)
 
     def _create_vnf_package(self):
-        vnfpkgm = vnf_package.VnfPackage(context=self.context,
-                                         **fakes.VNF_PACKAGE_DATA)
+        vnfpkgm = objects.VnfPackage(context=self.context,
+                                     **fakes.VNF_PACKAGE_DATA)
         vnfpkgm.create()
         return vnfpkgm
 
@@ -251,10 +251,101 @@ class TestConductor(SqlTestCase):
         mock_log.error.assert_called_once_with(expected_log,
             vnf_package_vnfd.package_uuid)
 
+    @mock.patch.object(objects.VnfPackage, 'is_package_in_use')
+    def test_terminate_vnf_instance(self, mock_package_in_use):
+        vnf_package_vnfd = self._create_and_upload_vnf_package()
+        vnf_instance_data = fake_obj.get_vnf_instance_data(
+            vnf_package_vnfd.vnfd_id)
+        mock_package_in_use.return_value = True
+        vnf_instance_data['instantiation_state'] =\
+            fields.VnfInstanceState.INSTANTIATED
+        vnf_instance = objects.VnfInstance(context=self.context,
+            **vnf_instance_data)
+        vnf_instance.create()
+
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL)
+
+        self.conductor.terminate(self.context, vnf_instance,
+                                 terminate_vnf_req)
+
+        self.vnflcm_driver.terminate_vnf.assert_called_once_with(
+            self.context, vnf_instance, terminate_vnf_req)
+        mock_package_in_use.assert_called_once()
+
+    @mock.patch.object(objects.VnfPackage, 'is_package_in_use')
+    def test_terminate_vnf_instance_with_usage_state_not_in_use(self,
+            mock_vnf_package_is_package_in_use):
+        vnf_package_vnfd = self._create_and_upload_vnf_package()
+        vnf_instance_data = fake_obj.get_vnf_instance_data(
+            vnf_package_vnfd.vnfd_id)
+        vnf_instance_data['instantiation_state'] =\
+            fields.VnfInstanceState.INSTANTIATED
+        vnf_instance = objects.VnfInstance(context=self.context,
+            **vnf_instance_data)
+        vnf_instance.create()
+
+        mock_vnf_package_is_package_in_use.return_value = False
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL)
+
+        self.conductor.terminate(self.context, vnf_instance,
+                                 terminate_vnf_req)
+
+        self.vnflcm_driver.terminate_vnf.assert_called_once_with(
+            self.context, vnf_instance, terminate_vnf_req)
+        mock_vnf_package_is_package_in_use.assert_called_once()
+
+    @mock.patch.object(objects.VnfPackage, 'is_package_in_use')
+    def test_terminate_vnf_instance_with_usage_state_already_in_use(self,
+            mock_vnf_package_is_package_in_use):
+        vnf_package_vnfd = self._create_and_upload_vnf_package()
+        vnf_instance_data = fake_obj.get_vnf_instance_data(
+            vnf_package_vnfd.vnfd_id)
+        vnf_instance_data['instantiation_state'] =\
+            fields.VnfInstanceState.INSTANTIATED
+        vnf_instance = objects.VnfInstance(context=self.context,
+            **vnf_instance_data)
+        vnf_instance.create()
+
+        mock_vnf_package_is_package_in_use.return_value = True
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL)
+
+        self.conductor.terminate(self.context, vnf_instance,
+                                 terminate_vnf_req)
+
+        self.vnflcm_driver.terminate_vnf.assert_called_once_with(
+            self.context, vnf_instance, terminate_vnf_req)
+        mock_vnf_package_is_package_in_use.assert_called_once()
+
+    @mock.patch.object(objects.VnfPackage, 'is_package_in_use')
+    @mock.patch('tacker.conductor.conductor_server.LOG')
+    def test_terminate_vnf_instance_failed_to_update_usage_state(
+            self, mock_log, mock_is_package_in_use):
+        vnf_package_vnfd = self._create_and_upload_vnf_package()
+        vnf_instance_data = fake_obj.get_vnf_instance_data(
+            vnf_package_vnfd.vnfd_id)
+        vnf_instance_data['instantiation_state'] =\
+            fields.VnfInstanceState.INSTANTIATED
+        vnf_instance = objects.VnfInstance(context=self.context,
+                                           **vnf_instance_data)
+        vnf_instance.create()
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL)
+        mock_is_package_in_use.side_effect = Exception
+        self.conductor.terminate(self.context, vnf_instance,
+                                 terminate_vnf_req)
+        self.vnflcm_driver.terminate_vnf.assert_called_once_with(
+            self.context, vnf_instance, terminate_vnf_req)
+        expected_msg = "Failed to update usage_state of vnf package %s"
+        mock_log.error.assert_called_once_with(expected_msg,
+            vnf_package_vnfd.package_uuid)
+
     @mock.patch.object(os, 'remove')
     @mock.patch.object(shutil, 'rmtree')
     @mock.patch.object(os.path, 'exists')
-    @mock.patch.object(vnf_package.VnfPackagesList, 'get_by_filters')
+    @mock.patch.object(objects.VnfPackagesList, 'get_by_filters')
     def test_run_cleanup_vnf_packages(self, mock_get_by_filter,
                                       mock_exists, mock_rmtree,
                                       mock_remove):

tacker/tests/unit/objects/test_terminate_vnf_request.py

@@ -0,0 +1,51 @@
+# Copyright (C) 2020 NTT DATA
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tacker import context
+from tacker import objects
+from tacker.tests.unit.db.base import SqlTestCase
+
+
+class TestTerminateVnfRequest(SqlTestCase):
+
+    def setUp(self):
+        super(TestTerminateVnfRequest, self).setUp()
+        self.context = context.get_admin_context()
+
+    def _get_terminate_vnf_request(self):
+        terminate_vnf_request = {
+            'termination_type': 'GRACEFUL',
+            'graceful_termination_timeout': 10
+        }
+        return terminate_vnf_request
+
+    def test_obj_from_primitive(self):
+        terminate_vnf_request = self._get_terminate_vnf_request()
+        result = objects.TerminateVnfRequest.obj_from_primitive(
+            terminate_vnf_request, self.context)
+        self.assertTrue(isinstance(result, objects.TerminateVnfRequest))
+        self.assertEqual('GRACEFUL', result.termination_type)
+        self.assertEqual(terminate_vnf_request['graceful_termination_timeout'],
+            result.graceful_termination_timeout)
+
+    def test_obj_from_primitive_without_timeout(self):
+        terminate_vnf_request = self._get_terminate_vnf_request()
+        terminate_vnf_request.pop('graceful_termination_timeout')
+
+        result = objects.TerminateVnfRequest.obj_from_primitive(
+            terminate_vnf_request, self.context)
+        self.assertTrue(isinstance(result, objects.TerminateVnfRequest))
+        self.assertEqual('GRACEFUL', result.termination_type)
+        self.assertEqual(0, result.graceful_termination_timeout)

tacker/tests/unit/vnflcm/test_controller.py

@@ -695,3 +695,143 @@ class TestController(base.TestCase):
 
         resp = req.get_response(self.app)
         self.assertEqual(http_client.METHOD_NOT_ALLOWED, resp.status_code)
+
+    @mock.patch.object(objects.VnfInstance, "get_by_id")
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(VNFLcmRPCAPI, "terminate")
+    @ddt.data({'terminationType': 'FORCEFUL'},
+              {'terminationType': 'GRACEFUL'},
+              {'terminationType': 'GRACEFUL',
+               'gracefulTerminationTimeout': 10})
+    def test_terminate(self, body, mock_terminate, mock_save, mock_get_by_id):
+        vnf_instance_obj = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        mock_get_by_id.return_value = vnf_instance_obj
+
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        resp = req.get_response(self.app)
+        self.assertEqual(http_client.ACCEPTED, resp.status_code)
+        mock_terminate.assert_called_once()
+
+    @ddt.data(
+        {'attribute': 'terminationType', 'value': "TEST",
+         'expected_type': 'enum'},
+        {'attribute': 'terminationType', 'value': 123,
+         'expected_type': 'enum'},
+        {'attribute': 'terminationType', 'value': True,
+         'expected_type': 'enum'},
+        {'attribute': 'gracefulTerminationTimeout', 'value': True,
+         'expected_type': 'integer'},
+        {'attribute': 'gracefulTerminationTimeout', 'value': "test",
+         'expected_type': 'integer'}
+    )
+    @ddt.unpack
+    def test_terminate_with_invalid_request_body(
+            self, attribute, value, expected_type):
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        body = {'terminationType': 'GRACEFUL',
+                'gracefulTerminationTimeout': 10}
+        body.update({attribute: value})
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        expected_message = ("Invalid input for field/attribute {attribute}. "
+             "Value: {value}.".format(value=value, attribute=attribute))
+
+        exception = self.assertRaises(exceptions.ValidationError,
+                                      self.controller.terminate,
+                                      req, constants.UUID, body=body)
+        self.assertIn(expected_message, exception.msg)
+
+    def test_terminate_missing_termination_type(self):
+        body = {'gracefulTerminationTimeout': 10}
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        # Call terminate API
+        resp = req.get_response(self.app)
+        self.assertEqual(http_client.BAD_REQUEST, resp.status_code)
+        self.assertEqual("'terminationType' is a required property",
+            resp.json['badRequest']['message'])
+
+    @ddt.data('GET', 'HEAD', 'PUT', 'DELETE', 'PATCH')
+    def test_terminate_invalid_http_method(self, method):
+        # Wrong HTTP method
+        body = {'terminationType': 'GRACEFUL',
+                'gracefulTerminationTimeout': 10}
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = method
+        resp = req.get_response(self.app)
+        self.assertEqual(http_client.METHOD_NOT_ALLOWED, resp.status_code)
+
+    @mock.patch.object(objects.vnf_instance, "_vnf_instance_get_by_id")
+    def test_terminate_non_existing_vnf_instance(self, mock_vnf_by_id):
+        body = {'terminationType': 'GRACEFUL',
+                'gracefulTerminationTimeout': 10}
+        mock_vnf_by_id.side_effect = exceptions.VnfInstanceNotFound
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        resp = req.get_response(self.app)
+
+        self.assertEqual(http_client.NOT_FOUND, resp.status_code)
+        self.assertEqual("Can not find requested vnf instance: %s" %
+            uuidsentinel.vnf_instance_id,
+            resp.json['itemNotFound']['message'])
+
+    @mock.patch.object(objects.vnf_instance, "_vnf_instance_get_by_id")
+    def test_terminate_incorrect_instantiation_state(self, mock_vnf_by_id):
+        mock_vnf_by_id.return_value = fakes.return_vnf_instance()
+        body = {"terminationType": "FORCEFUL"}
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        resp = req.get_response(self.app)
+
+        self.assertEqual(http_client.CONFLICT, resp.status_code)
+        expected_msg = ("Vnf instance %s in instantiation_state "
+                        "NOT_INSTANTIATED. Cannot terminate while the vnf "
+                        "instance is in this state.")
+        self.assertEqual(expected_msg % uuidsentinel.vnf_instance_id,
+            resp.json['conflictingRequest']['message'])
+
+    @mock.patch.object(objects.VnfInstance, "get_by_id")
+    def test_terminate_incorrect_task_state(self, mock_vnf_by_id):
+        vnf_instance = fakes.return_vnf_instance(
+            instantiated_state=fields.VnfInstanceState.INSTANTIATED,
+            task_state=fields.VnfInstanceTaskState.TERMINATING)
+        mock_vnf_by_id.return_value = vnf_instance
+
+        body = {"terminationType": "FORCEFUL"}
+        req = fake_request.HTTPRequest.blank(
+            '/vnf_instances/%s/terminate' % uuidsentinel.vnf_instance_id)
+        req.body = jsonutils.dump_as_bytes(body)
+        req.headers['Content-Type'] = 'application/json'
+        req.method = 'POST'
+
+        resp = req.get_response(self.app)
+
+        self.assertEqual(http_client.CONFLICT, resp.status_code)
+        expected_msg = ("Vnf instance %s in task_state TERMINATING. Cannot "
+                        "terminate while the vnf instance is in this state.")
+        self.assertEqual(expected_msg % uuidsentinel.vnf_instance_id,
+            resp.json['conflictingRequest']['message'])

tacker/tests/unit/vnflcm/test_vnflcm_driver.py

@@ -23,10 +23,12 @@ from tacker.common import exceptions
 from tacker.common import utils
 from tacker import context
 from tacker import objects
+from tacker.objects import fields
 from tacker.tests.unit.db import base as db_base
 from tacker.tests.unit.vnflcm import fakes
 from tacker.tests import uuidsentinel
 from tacker.vnflcm import vnflcm_driver
+from tacker.vnfm import vim_client
 
 
 class InfraDriverException(Exception):
@@ -256,7 +258,7 @@ class TestVnflcmDriver(db_base.SqlTestCase):
         self.assertEqual(expected_error % vnf_instance_obj.id, str(error))
         self.assertEqual("NOT_INSTANTIATED",
             vnf_instance_obj.instantiation_state)
-        self.assertEqual(1, mock_vnf_instance_save.call_count)
+        self.assertEqual(2, mock_vnf_instance_save.call_count)
         self.assertEqual(2, self._vnf_manager.invoke.call_count)
 
         shutil.rmtree(fake_csar)
@@ -298,8 +300,8 @@ class TestVnflcmDriver(db_base.SqlTestCase):
         self.assertEqual(expected_error % vnf_instance_obj.id, str(error))
         self.assertEqual("NOT_INSTANTIATED",
             vnf_instance_obj.instantiation_state)
-        self.assertEqual(1, mock_vnf_instance_save.call_count)
-        self.assertEqual(3, self._vnf_manager.invoke.call_count)
+        self.assertEqual(3, mock_vnf_instance_save.call_count)
+        self.assertEqual(5, self._vnf_manager.invoke.call_count)
 
         shutil.rmtree(fake_csar)
 
@@ -334,3 +336,106 @@ class TestVnflcmDriver(db_base.SqlTestCase):
         self.assertEqual(2, mock_create.call_count)
         self.assertEqual("INSTANTIATED", vnf_instance_obj.instantiation_state)
         shutil.rmtree(fake_csar)
+
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(vim_client.VimClient, "get_vim")
+    @mock.patch.object(objects.VnfResourceList, "get_by_vnf_instance_id")
+    @mock.patch.object(objects.VnfResource, "destroy")
+    def test_terminate_vnf(self, mock_resource_destroy, mock_resource_list,
+            mock_vim, mock_vnf_instance_save):
+        vnf_instance = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        vnf_instance.instantiated_vnf_info.instance_id =\
+            uuidsentinel.instance_id
+
+        mock_resource_list.return_value = [fakes.return_vnf_resource()]
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.FORCEFUL)
+
+        self._mock_vnf_manager()
+        driver = vnflcm_driver.VnfLcmDriver()
+        driver.terminate_vnf(self.context, vnf_instance, terminate_vnf_req)
+        self.assertEqual(2, mock_vnf_instance_save.call_count)
+        self.assertEqual(1, mock_resource_destroy.call_count)
+        self.assertEqual(3, self._vnf_manager.invoke.call_count)
+
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(vim_client.VimClient, "get_vim")
+    @mock.patch.object(objects.VnfResourceList, "get_by_vnf_instance_id")
+    @mock.patch.object(objects.VnfResource, "destroy")
+    def test_terminate_vnf_graceful_no_timeout(self, mock_resource_destroy,
+            mock_resource_list, mock_vim, mock_vnf_instance_save):
+        vnf_instance = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        vnf_instance.instantiated_vnf_info.instance_id =\
+            uuidsentinel.instance_id
+
+        mock_resource_list.return_value = [fakes.return_vnf_resource()]
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL)
+
+        self._mock_vnf_manager()
+        driver = vnflcm_driver.VnfLcmDriver()
+        driver.terminate_vnf(self.context, vnf_instance, terminate_vnf_req)
+        self.assertEqual(2, mock_vnf_instance_save.call_count)
+        self.assertEqual(1, mock_resource_destroy.call_count)
+
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(vim_client.VimClient, "get_vim")
+    def test_terminate_vnf_delete_instance_failed(self, mock_vim,
+            mock_vnf_instance_save):
+        vnf_instance = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        vnf_instance.instantiated_vnf_info.instance_id =\
+            uuidsentinel.instance_id
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.GRACEFUL,
+            graceful_termination_timeout=10)
+
+        self._mock_vnf_manager(fail_method_name='delete')
+        driver = vnflcm_driver.VnfLcmDriver()
+        error = self.assertRaises(InfraDriverException, driver.terminate_vnf,
+            self.context, vnf_instance, terminate_vnf_req)
+        self.assertEqual("delete failed", str(error))
+        self.assertEqual(1, mock_vnf_instance_save.call_count)
+        self.assertEqual(1, self._vnf_manager.invoke.call_count)
+
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(vim_client.VimClient, "get_vim")
+    def test_terminate_vnf_delete_wait_instance_failed(self, mock_vim,
+            mock_vnf_instance_save):
+        vnf_instance = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        vnf_instance.instantiated_vnf_info.instance_id =\
+            uuidsentinel.instance_id
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.FORCEFUL)
+
+        self._mock_vnf_manager(fail_method_name='delete_wait')
+        driver = vnflcm_driver.VnfLcmDriver()
+        error = self.assertRaises(InfraDriverException, driver.terminate_vnf,
+            self.context, vnf_instance, terminate_vnf_req)
+        self.assertEqual("delete_wait failed", str(error))
+        self.assertEqual(2, mock_vnf_instance_save.call_count)
+        self.assertEqual(2, self._vnf_manager.invoke.call_count)
+
+    @mock.patch.object(objects.VnfInstance, "save")
+    @mock.patch.object(vim_client.VimClient, "get_vim")
+    @mock.patch.object(objects.VnfResourceList, "get_by_vnf_instance_id")
+    def test_terminate_vnf_delete_vnf_resource_failed(self, mock_resource_list,
+            mock_vim, mock_vnf_instance_save):
+        vnf_instance = fakes.return_vnf_instance(
+            fields.VnfInstanceState.INSTANTIATED)
+        vnf_instance.instantiated_vnf_info.instance_id =\
+            uuidsentinel.instance_id
+        terminate_vnf_req = objects.TerminateVnfRequest(
+            termination_type=fields.VnfInstanceTerminationType.FORCEFUL)
+
+        mock_resource_list.return_value = [fakes.return_vnf_resource()]
+        self._mock_vnf_manager(fail_method_name='delete_vnf_resource')
+        driver = vnflcm_driver.VnfLcmDriver()
+        error = self.assertRaises(InfraDriverException, driver.terminate_vnf,
+            self.context, vnf_instance, terminate_vnf_req)
+        self.assertEqual("delete_vnf_resource failed", str(error))
+        self.assertEqual(2, mock_vnf_instance_save.call_count)
+        self.assertEqual(3, self._vnf_manager.invoke.call_count)

tacker/vnflcm/abstract_driver.py

@@ -31,3 +31,14 @@ class VnfInstanceAbstractDriver(object):
         :return: None
         """
         pass
+
+    @abc.abstractmethod
+    def terminate_vnf(self, context, vnf_instance, terminate_vnf_req):
+        """terminate vnf request.
+
+        :param context: the request context
+        :param vnf_instance: object of VnfInstance
+        :param terminate_vnf_req: object of TerminateVnfRequest
+        :return: None
+        """
+        pass

tacker/vnflcm/vnflcm_driver.py

@@ -14,6 +14,10 @@
 #    under the License.
 
 import copy
+import functools
+import inspect
+import six
+import time
 
 from oslo_config import cfg
 from oslo_log import log as logging
@@ -24,6 +28,8 @@ from tacker.common import log
 
 from tacker.common import driver_manager
 from tacker.common import exceptions
+from tacker.common import safe_utils
+from tacker.common import utils
 from tacker import objects
 from tacker.objects import fields
 from tacker.vnflcm import abstract_driver
@@ -34,6 +40,84 @@ LOG = logging.getLogger(__name__)
 CONF = cfg.CONF
 
 
+@utils.expects_func_args('vnf_instance')
+def rollback_vnf_instantiated_resources(function):
+    """Decorator to rollback resources created during vnf instantiation"""
+
+    def _rollback_vnf(vnflcm_driver, context, vnf_instance):
+        vim_info = vnflcm_utils._get_vim(context,
+                vnf_instance.vim_connection_info)
+
+        vim_connection_info = objects.VimConnectionInfo.obj_from_primitive(
+            vim_info, context)
+
+        LOG.info("Rollback vnf %s", vnf_instance.id)
+        try:
+            vnflcm_driver._delete_vnf_instance_resources(context, vnf_instance,
+                    vim_connection_info)
+
+            if vnf_instance.instantiated_vnf_info:
+                vnf_instance.instantiated_vnf_info.reinitialize()
+
+            vnflcm_driver._vnf_instance_update(context, vnf_instance,
+                    vim_connection_info=[], task_state=None)
+
+            LOG.info("Vnf %s rollback completed successfully", vnf_instance.id)
+        except Exception as ex:
+            LOG.error("Unable to rollback vnf instance "
+                      "%s due to error: %s", vnf_instance.id, ex)
+
+    @functools.wraps(function)
+    def decorated_function(self, context, *args, **kwargs):
+        try:
+            return function(self, context, *args, **kwargs)
+        except Exception as exp:
+            with excutils.save_and_reraise_exception():
+                wrapped_func = safe_utils.get_wrapped_function(function)
+                keyed_args = inspect.getcallargs(wrapped_func, self, context,
+                                                 *args, **kwargs)
+                vnf_instance = keyed_args['vnf_instance']
+                LOG.error("Failed to instantiate vnf %(id)s. Error: %(error)s",
+                          {"id": vnf_instance.id,
+                           "error": six.text_type(exp)})
+
+                _rollback_vnf(self, context, vnf_instance)
+
+    return decorated_function
+
+
+@utils.expects_func_args('vnf_instance')
+def revert_to_error_task_state(function):
+    """Decorator to revert task_state to error  on failure."""
+
+    @functools.wraps(function)
+    def decorated_function(self, context, *args, **kwargs):
+        try:
+            return function(self, context, *args, **kwargs)
+        except Exception:
+            with excutils.save_and_reraise_exception():
+                wrapped_func = safe_utils.get_wrapped_function(function)
+                keyed_args = inspect.getcallargs(wrapped_func, self, context,
+                                                 *args, **kwargs)
+                vnf_instance = keyed_args['vnf_instance']
+                previous_task_state = vnf_instance.task_state
+                try:
+                    self._vnf_instance_update(context, vnf_instance,
+                        task_state=fields.VnfInstanceTaskState.ERROR)
+                    LOG.info("Successfully reverted task state from "
+                             "%(state)s to %(error)s on failure for vnf "
+                             "instance %(id)s.",
+                             {"state": previous_task_state,
+                              "id": vnf_instance.id,
+                              "error": fields.VnfInstanceTaskState.ERROR})
+                except Exception as e:
+                    LOG.warning("Failed to revert task state for vnf "
+                                "instance %(id)s. Error: %(error)s",
+                                {"id": vnf_instance.id, "error": e})
+
+    return decorated_function
+
+
 class VnfLcmDriver(abstract_driver.VnfInstanceAbstractDriver):
 
     def __init__(self):
@@ -130,6 +214,7 @@ class VnfLcmDriver(abstract_driver.VnfInstanceAbstractDriver):
                 vim_connection_info=vim_connection_info)
 
     @log.log
+    @rollback_vnf_instantiated_resources
     def instantiate_vnf(self, context, vnf_instance, instantiate_vnf_req):
 
         vim_connection_info_list = vnflcm_utils.\
@@ -151,3 +236,71 @@ class VnfLcmDriver(abstract_driver.VnfInstanceAbstractDriver):
         self._vnf_instance_update(context, vnf_instance,
                     instantiation_state=fields.VnfInstanceState.INSTANTIATED,
                     task_state=None)
+
+    @log.log
+    @revert_to_error_task_state
+    def terminate_vnf(self, context, vnf_instance, terminate_vnf_req):
+
+        vim_info = vnflcm_utils._get_vim(context,
+            vnf_instance.vim_connection_info)
+
+        vim_connection_info = objects.VimConnectionInfo.obj_from_primitive(
+            vim_info, context)
+
+        LOG.info("Terminating vnf %s", vnf_instance.id)
+        try:
+            self._delete_vnf_instance_resources(context, vnf_instance,
+                    vim_connection_info, terminate_vnf_req=terminate_vnf_req)
+
+            vnf_instance.instantiated_vnf_info.reinitialize()
+            self._vnf_instance_update(context, vnf_instance,
+                vim_connection_info=[], task_state=None)
+
+            LOG.info("Vnf terminated %s successfully", vnf_instance.id)
+        except Exception as exp:
+            with excutils.save_and_reraise_exception():
+                LOG.error("Unable to terminate vnf '%s' instance. "
+                          "Error: %s", vnf_instance.id,
+                          encodeutils.exception_to_unicode(exp))
+
+    def _delete_vnf_instance_resources(self, context, vnf_instance,
+                                       vim_connection_info,
+                                       terminate_vnf_req=None):
+
+        if vnf_instance.instantiated_vnf_info and \
+                vnf_instance.instantiated_vnf_info.instance_id:
+
+            instance_id = vnf_instance.instantiated_vnf_info.instance_id
+            access_info = vim_connection_info.access_info
+
+            LOG.info("Deleting stack %(instance)s for vnf %(id)s ",
+                    {"instance": instance_id, "id": vnf_instance.id})
+
+            if terminate_vnf_req:
+                if (terminate_vnf_req.termination_type == 'GRACEFUL' and
+                        terminate_vnf_req.graceful_termination_timeout > 0):
+                    time.sleep(terminate_vnf_req.graceful_termination_timeout)
+
+            self._vnf_manager.invoke(vim_connection_info.vim_type,
+                'delete', plugin=self, context=context,
+                vnf_id=instance_id, auth_attr=access_info)
+
+            vnf_instance.instantiation_state = \
+                fields.VnfInstanceState.NOT_INSTANTIATED
+            vnf_instance.save()
+
+            self._vnf_manager.invoke(vim_connection_info.vim_type,
+                'delete_wait', plugin=self, context=context,
+                vnf_id=instance_id, auth_attr=access_info)
+
+        vnf_resources = objects.VnfResourceList.get_by_vnf_instance_id(
+            context, vnf_instance.id)
+
+        for vnf_resource in vnf_resources:
+            self._vnf_manager.invoke(vim_connection_info.vim_type,
+                    'delete_vnf_instance_resource',
+                    context=context, vnf_instance=vnf_instance,
+                    vim_connection_info=vim_connection_info,
+                    vnf_resource=vnf_resource)
+
+            vnf_resource.destroy(context)