Fix pep error for pike resource

Change-Id: I778232ecbb74dc9e6a9e7a2bf4ca6a6b70f0e196
Issue-ID: MULTICLOUD-424
Signed-off-by: Haibin Huang <haibin.huang@intel.com>

7 files changed, 210 insertions, 205 deletions

diff --git a/pike/pike/__init__.py b/pike/pike/__init__.py
index afa702d3..ae1ce9db 100644
--- a/pike/pike/__init__.py
+++ b/pike/pike/__init__.py
@@ -11,4 +11,3 @@
 # 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.
-
diff --git a/pike/pike/middleware.py b/pike/pike/middleware.py
index f2618e06..4f19da08 100644
--- a/pike/pike/middleware.py
+++ b/pike/pike/middleware.py
@@ -19,6 +19,7 @@ from onaplogging.mdcContext import MDC
 FORWARDED_FOR_FIELDS = ["HTTP_X_FORWARDED_FOR", "HTTP_X_FORWARDED_HOST",
                         "HTTP_X_FORWARDED_SERVER"]
 
+
 class LogContextMiddleware(object):
 
     #  the last IP behind multiple proxies,  if no exist proxies
@@ -43,7 +44,6 @@ class LogContextMiddleware(object):
 
         return ip
 
-
     def process_request(self, request):
         # fetch propageted Id from other component. if do not fetch id,
         # generate one.
@@ -62,4 +62,3 @@ class LogContextMiddleware(object):
 
         MDC.clear()
         return response
-
diff --git a/pike/pike/resource/__init__.py b/pike/pike/resource/__init__.py
index 741e0afb..5a9af6b8 100644
--- a/pike/pike/resource/__init__.py
+++ b/pike/pike/resource/__init__.py
@@ -11,4 +11,3 @@
 # 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.
-
diff --git a/pike/pike/resource/tests/tests_infra_workload.py b/pike/pike/resource/tests/tests_infra_workload.py
index 73d4ffca..a94a53f3 100644
--- a/pike/pike/resource/tests/tests_infra_workload.py
+++ b/pike/pike/resource/tests/tests_infra_workload.py
@@ -15,92 +15,99 @@
 import mock
 
 import unittest
-import json
 from rest_framework import status
 
-from common.utils import restcall
 from common.msapi.helper import Helper as helper
 from pike.resource.views.infra_workload import InfraWorkload
 from pike.resource.views.infra_workload import APIv1InfraWorkload
 
-MOCK_TOKEN_RESPONSE = {"access":
-                           {"token":
-                                {"issued_at":"2018-05-10T16:56:56.000000Z",
-                                 "expires":"2018-05-10T17:56:56.000000Z",
-                                 "id":"4a832860dd744306b3f66452933f939e",
-                                 "tenant":{"domain":{"id":"default","name":"Default"},
-                                           "enabled":"true","id":"0e148b76ee8c42f78d37013bf6b7b1ae",
-                                           "name":"VIM"}},"serviceCatalog":[],
-                            "user":{"domain":{"id":"default","name":"Default"},
-                                    "id":"ba76c94eb5e94bb7bec6980e5507aae2",
-                                    "name":"demo"}}}
-
-MOCK_HEAT_CREATE_BODY1 =   {
-     "generic-vnf-id":"MOCK_GENERIF_VNF_ID1",
-     "vf-module-id":"MOCK_VF_MODULE_ID1",
-     "oof_directives":{
-         "directives":[
-             {
-                 "id":"MOCK_VNFC_ID1",
-                 "type": "vnfc",
-                 "directives":[{
-                     "type":"flavor_directives",
-                     "attributes":[
-                         {
-                             "attribute_name":"flavor1",
-                             "attribute_value":"m1.hpa.medium"
-                         }
-                     ]
-                 },
-                 {
-                     "type":"sriovNetNetwork_directives",
-                     "attributes":[
-                         {
-                             "attribute_name":"physnetwork_label",
-                             "attribute_value":"physnet1"
-                         }
-                     ]
-
-                 }
-                 ]
-             }
-         ]
-     },
-     "sdnc_directives":{},
-     "template_type":"HEAT",
-     "template_data":{
-         "files":{  },
-         "disable_rollback":True,
-         "parameters":{
-             "flavor1":"m1.heat"
-         },
-         "stack_name":"teststack",
-         "template":{
-             "heat_template_version":"2013-05-23",
-             "description":"Simple template to test heat commands",
-             "parameters":
-                 {
-                     "flavor":{
-                         "default":"m1.tiny",
-                         "type":"string"
-                     }
-                 },
-             "resources":{
-                 "hello_world":{
-                     "type":"OS::Nova::Server",
-                     "properties":{
-                         "key_name":"heat_key",
-                         "flavor":{
-                             "get_param":"flavor"
-                         },
-                         "image":"40be8d1a-3eb9-40de-8abd-43237517384f",
-                         "user_data":"#!/bin/bash -xv\necho \"hello world\" > /root/hello-world.txt\n"
-                     }
-                 }
-             }
-         },
-         "timeout_mins":60
-     }
+MOCK_TOKEN_RESPONSE = {
+    "access": {
+        "token": {
+            "issued_at": "2018-05-10T16:56:56.000000Z",
+            "expires": "2018-05-10T17:56:56.000000Z",
+            "id": "4a832860dd744306b3f66452933f939e",
+            "tenant": {
+                "domain": {"id": "default", "name": "Default"},
+                "enabled": "true",
+                "id": "0e148b76ee8c42f78d37013bf6b7b1ae",
+                "name": "VIM"
+            }
+        },
+        "serviceCatalog": [],
+        "user": {
+            "domain": {"id": "default", "name": "Default"},
+            "id": "ba76c94eb5e94bb7bec6980e5507aae2",
+            "name": "demo"
+        }
+    }
+}
+
+MOCK_HEAT_CREATE_BODY1 = {
+    "generic-vnf-id": "MOCK_GENERIF_VNF_ID1",
+    "vf-module-id": "MOCK_VF_MODULE_ID1",
+    "oof_directives": {
+        "directives": [
+            {
+                "id": "MOCK_VNFC_ID1",
+                "type": "vnfc",
+                "directives": [
+                    {
+                        "type": "flavor_directives",
+                        "attributes": [
+                            {
+                                "attribute_name": "flavor1",
+                                "attribute_value": "m1.hpa.medium"
+                            }
+                        ]
+                    },
+                    {
+                        "type": "sriovNetNetwork_directives",
+                        "attributes": [
+                            {
+                                "attribute_name": "physnetwork_label",
+                                "attribute_value": "physnet1"
+                            }
+                        ]
+                    }
+                ]
+            }
+        ]
+    },
+    "sdnc_directives": {},
+    "template_type": "HEAT",
+    "template_data": {
+        "files": {},
+        "disable_rollback": True,
+        "parameters": {
+            "flavor1": "m1.heat"
+        },
+        "stack_name": "teststack",
+        "template": {
+            "heat_template_version": "2013-05-23",
+            "description": "Simple template to test heat commands",
+            "parameters": {
+                "flavor": {
+                    "default": "m1.tiny",
+                    "type": "string"
+                }
+            },
+            "resources": {
+                "hello_world": {
+                    "type": "OS::Nova::Server",
+                    "properties": {
+                        "key_name": "heat_key",
+                        "flavor": {
+                            "get_param": "flavor"
+                        },
+                        "image": "40be8d1a-3eb9-40de-8abd-43237517384f",
+                        "user_data": "#!/bin/bash -xv\necho \"hello world\" > /root/hello-world.txt\n"
+                    }
+                }
+            }
+        },
+        "timeout_mins": 60
+    }
 }
 
 MOCK_HEAT_CREATE_RESPONSE1 = {
@@ -112,51 +119,51 @@ MOCK_HEAT_CREATE_RESPONSE1 = {
 MOCK_HEAT_LIST_RESPONSE1 = {
     'stacks': [
         {
-            'stack_status':"CREATE_IN_PROCESS"
+            'stack_status': "CREATE_IN_PROCESS"
         }
     ]
 }
 
 
-MOCK_HEAT_CREATE_BODY2 =   {
-     "generic-vnf-id":"MOCK_GENERIF_VNF_ID1",
-     "vf-module-id":"MOCK_VF_MODULE_ID1",
-     "template_type":"HEAT",
-     "template_data":{
-         "files":{  },
-         "disable_rollback":True,
-         "parameters":{
-             "flavor1":"m1.heat"
-         },
-         "stack_name":"teststack",
-         "template":{
-             "heat_template_version":"2013-05-23",
-             "description":"Simple template to test heat commands",
-             "parameters":
-                 {
-                     "flavor":{
-                         "default":"m1.tiny",
-                         "type":"string"
-                     }
-                 },
-             "resources":{
-                 "hello_world":{
-                     "type":"OS::Nova::Server",
-                     "properties":{
-                         "key_name":"heat_key",
-                         "flavor":{
-                             "get_param":"flavor"
-                         },
-                         "image":"40be8d1a-3eb9-40de-8abd-43237517384f",
-                         "user_data":"#!/bin/bash -xv\necho \"hello world\" > /root/hello-world.txt\n"
-                     }
-                 }
-             }
-         },
-         "timeout_mins":60
-     }
+MOCK_HEAT_CREATE_BODY2 = {
+    "generic-vnf-id": "MOCK_GENERIF_VNF_ID1",
+    "vf-module-id": "MOCK_VF_MODULE_ID1",
+    "template_type": "HEAT",
+    "template_data": {
+        "files": {},
+        "disable_rollback": True,
+        "parameters": {
+            "flavor1": "m1.heat"
+        },
+        "stack_name": "teststack",
+        "template": {
+            "heat_template_version": "2013-05-23",
+            "description": "Simple template to test heat commands",
+            "parameters": {
+                "flavor": {
+                    "default": "m1.tiny",
+                    "type": "string"
+                }
+            },
+            "resources": {
+                "hello_world": {
+                    "type": "OS::Nova::Server",
+                    "properties": {
+                        "key_name": "heat_key",
+                        "flavor": {
+                            "get_param": "flavor"
+                        },
+                        "image": "40be8d1a-3eb9-40de-8abd-43237517384f",
+                        "user_data": "#!/bin/bash -xv\necho \"hello world\" > /root/hello-world.txt\n"
+                    }
+                }
+            }
+        },
+        "timeout_mins": 60
+    }
 }
 
+
 class InfraWorkloadTest(unittest.TestCase):
     def setUp(self):
         self._InfraWorkload = InfraWorkload()
@@ -167,18 +174,18 @@ class InfraWorkloadTest(unittest.TestCase):
 
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_post(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_post(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
         mock_request.data = MOCK_HEAT_CREATE_BODY1
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_CREATE_RESPONSE1, status.HTTP_201_CREATED)
-                ]
+        ]
 
         vimid = "CloudOwner_Region1"
 
@@ -186,21 +193,20 @@ class InfraWorkloadTest(unittest.TestCase):
         self.assertEqual(response.status_code, status.HTTP_201_CREATED)
         pass
 
-
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_post_wo_oof_directive(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_post_wo_oof_directive(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
         mock_request.data = MOCK_HEAT_CREATE_BODY2
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_CREATE_RESPONSE1, status.HTTP_201_CREATED)
-                ]
+        ]
 
         vimid = "CloudOwner_Region1"
 
@@ -210,17 +216,17 @@ class InfraWorkloadTest(unittest.TestCase):
 
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_get(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_get(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_LIST_RESPONSE1, status.HTTP_200_OK)
-                ]
+        ]
 
         vimid = "CloudOwner_Region1"
         mock_stack_id = "MOCKED_HEAT_STACK_ID1"
@@ -229,20 +235,19 @@ class InfraWorkloadTest(unittest.TestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         pass
 
-
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_delete(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_delete(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_LIST_RESPONSE1, status.HTTP_200_OK)
-                ]
+        ]
 
         vimid = "CloudOwner_Region1"
         mock_stack_id = "MOCKED_HEAT_STACK_ID1"
@@ -262,18 +267,18 @@ class APIv1InfraWorkloadTest(unittest.TestCase):
 
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_post(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_post(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
         mock_request.data = MOCK_HEAT_CREATE_BODY1
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_CREATE_RESPONSE1, status.HTTP_201_CREATED)
-                ]
+        ]
 
         cloud_owner = "CloudOwner"
         cloud_region_id = "Region1"
@@ -282,21 +287,19 @@ class APIv1InfraWorkloadTest(unittest.TestCase):
         self.assertEqual(response.status_code, status.HTTP_201_CREATED)
         pass
 
-
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_get(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_get(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_LIST_RESPONSE1, status.HTTP_200_OK)
-                ]
-
+        ]
 
         cloud_owner = "CloudOwner"
         cloud_region_id = "Region1"
@@ -306,20 +309,19 @@ class APIv1InfraWorkloadTest(unittest.TestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         pass
 
-
     @mock.patch.object(helper, 'MultiCloudServiceHelper')
     @mock.patch.object(helper, 'MultiCloudIdentityHelper')
-    def test_delete(self,  mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
+    def test_delete(self, mock_MultiCloudIdentityHelper, mock_MultiCloudServiceHelper):
         mock_request = mock.Mock()
         mock_request.META = {"testkey": "testvalue"}
 
-        mock_MultiCloudIdentityHelper.side_effect= [
+        mock_MultiCloudIdentityHelper.side_effect = [
             (0, MOCK_TOKEN_RESPONSE, status.HTTP_201_CREATED)
-                ]
+        ]
 
-        mock_MultiCloudServiceHelper.side_effect= [
+        mock_MultiCloudServiceHelper.side_effect = [
             (0, MOCK_HEAT_LIST_RESPONSE1, status.HTTP_200_OK)
-                ]
+        ]
 
         cloud_owner = "CloudOwner"
         cloud_region_id = "Region1"
diff --git a/pike/pike/resource/views/infra_workload.py b/pike/pike/resource/views/infra_workload.py
index 45352bde..0a3a5743 100644
--- a/pike/pike/resource/views/infra_workload.py
+++ b/pike/pike/resource/views/infra_workload.py
@@ -26,7 +26,6 @@ from common.msapi import extsys
 from common.msapi.helper import Helper as helper
 from common.utils import restcall
 from common.exceptions import VimDriverNewtonException
-from newton_base.util import VimDriverUtils
 
 logger = logging.getLogger(__name__)
 
@@ -41,7 +40,7 @@ class InfraWorkload(APIView):
         self._logger.info("data: %s" % request.data)
         self._logger.debug("META: %s" % request.META)
 
-        try :
+        try:
             data = request.data
             oof_directive = data.get("oof_directives", {})
             template_type = data.get("template_type", None)
@@ -70,12 +69,12 @@ class InfraWorkload(APIView):
                 # reset to make sure "files" are empty
                 template_data["file"] = {}
 
-                #authenticate
+                # authenticate
                 cloud_owner, regionid = extsys.decode_vim_id(vimid)
                 # should go via multicloud proxy so that the selflink is updated by multicloud
                 retcode, v2_token_resp_json, os_status = helper.MultiCloudIdentityHelper(
-                                                 settings.MULTICLOUD_API_V1_PREFIX,
-                                                 cloud_owner, regionid, "/v2.0/tokens")
+                    settings.MULTICLOUD_API_V1_PREFIX,
+                    cloud_owner, regionid, "/v2.0/tokens")
                 if retcode > 0 or not v2_token_resp_json:
                     logger.error("authenticate fails:%s,%s, %s" %
                                  (cloud_owner, regionid, v2_token_resp_json))
@@ -85,8 +84,12 @@ class InfraWorkload(APIView):
                 resource_uri = "/stacks"
                 self._logger.info("retrieve stack resources, URI:%s" % resource_uri)
                 retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner,
-                                                         regionid, v2_token_resp_json, service_type,
-                                                         resource_uri, template_data, "POST")
+                                                                             regionid,
+                                                                             v2_token_resp_json,
+                                                                             service_type,
+                                                                             resource_uri,
+                                                                             template_data,
+                                                                             "POST")
                 stack1 = content.get('stack', None) if retcode == 0 and content else None
                 resp_template = {
                     "template_type": template_type,
@@ -100,11 +103,11 @@ class InfraWorkload(APIView):
             else:
                 msg = "The template type %s is not supported" % (template_type)
                 self._logger.warn(msg)
-                return Response(data={"error":msg}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+                return Response(data={"error": msg}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
         except VimDriverNewtonException as e:
             self._logger.error("Plugin exception> status:%s,error:%s"
-                                  % (e.status_code, e.content))
+                               % (e.status_code, e.content))
             return Response(data={'error': e.content}, status=e.status_code)
         except HttpError as e:
             self._logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
@@ -114,12 +117,11 @@ class InfraWorkload(APIView):
             return Response(data={'error': str(e)},
                             status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
-
     def get(self, request, vimid="", requri=""):
         self._logger.info("vimid, requri: %s, %s" % (vimid, requri))
         self._logger.debug("META: %s" % request.META)
 
-        try :
+        try:
             # assume the workload_type is heat
             template_type = "heat"
             stack_id = requri
@@ -128,7 +130,7 @@ class InfraWorkload(APIView):
             retcode, v2_token_resp_json, os_status = helper.MultiCloudIdentityHelper(
                 settings.MULTICLOUD_API_V1_PREFIX,
                 cloud_owner, regionid, "/v2.0/tokens")
-            if retcode > 0  or not v2_token_resp_json:
+            if retcode > 0 or not v2_token_resp_json:
                 logger.error("authenticate fails:%s, %s, %s" % (cloud_owner, regionid, v2_token_resp_json))
                 return
 
@@ -139,7 +141,7 @@ class InfraWorkload(APIView):
             retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner, regionid, v2_token_resp_json,
                                                                          service_type, resource_uri, None, "GET")
             stacks = content.get('stacks', []) if retcode == 0 and content else []
-            stack_status = stacks[0]["stack_status"] if len(stacks)>0 else ""
+            stack_status = stacks[0]["stack_status"] if len(stacks) > 0 else ""
 
             resp_template = {
                 "template_type": template_type,
@@ -157,7 +159,7 @@ class InfraWorkload(APIView):
             return Response(data=resp_template, status=status.HTTP_200_OK)
         except VimDriverNewtonException as e:
             self._logger.error("Plugin exception> status:%s,error:%s"
-                                  % (e.status_code, e.content))
+                               % (e.status_code, e.content))
             return Response(data={'error': e.content}, status=e.status_code)
         except HttpError as e:
             self._logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
@@ -180,7 +182,7 @@ class InfraWorkload(APIView):
         cloud_owner, regionid = extsys.decode_vim_id(vimid)
         # should go via multicloud proxy so that the selflink is updated by multicloud
         retcode, v2_token_resp_json, os_status = helper.MultiCloudIdentityHelper(settings.MULTICLOUD_API_V1_PREFIX,
-                                                             cloud_owner, regionid, "/v2.0/tokens")
+                                                                                 cloud_owner, regionid, "/v2.0/tokens")
         if retcode > 0:
             logger.error("authenticate fails:%s, %s, %s" % (cloud_owner, regionid, v2_token_resp_json))
             return None
@@ -189,16 +191,16 @@ class InfraWorkload(APIView):
 
         # common prefix
         aai_cloud_region = "/cloud-infrastructure/cloud-regions/cloud-region/%s/%s/tenants/tenant/%s" \
-                                  % (cloud_owner, regionid, tenant_id)
+                           % (cloud_owner, regionid, tenant_id)
 
         # get stack resource
         service_type = "orchestration"
-        resource_uri = "/stacks/%s/resources"%(stack_id)
+        resource_uri = "/stacks/%s/resources" % (stack_id)
         self._logger.info("retrieve stack resources, URI:%s" % resource_uri)
         retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner, regionid, v2_token_resp_json, service_type, resource_uri, None, "GET")
         resources = content.get('resources', []) if retcode == 0 and content else []
 
-        #find and update resources
+        # find and update resources
         transactions = []
         for resource in resources:
             if resource.get('resource_status', None) != "CREATED_COMPLETE":
@@ -209,7 +211,7 @@ class InfraWorkload(APIView):
                 resource_uri = "/servers/%s" % (resource['physical_resource_id'])
                 self._logger.info("retrieve vserver detail, URI:%s" % resource_uri)
                 retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner, regionid, v2_token_resp_json, service_type,
-                                                       resource_uri, None, "GET")
+                                                                             resource_uri, None, "GET")
                 self._logger.debug(" resp data:%s" % content)
                 vserver_detail = content.get('server', None) if retcode == 0 and content else None
                 if vserver_detail:
@@ -232,8 +234,9 @@ class InfraWorkload(APIView):
                             "vserver-selflink": vserver_link,
                             "prov-status": vserver_detail['status']
                         },
-                        "uri": aai_cloud_region + "/vservers/vserver/%s"\
-                                                             % ( vserver_detail['id'])}
+                        "uri": aai_cloud_region + "/vservers/vserver/%s"
+                                                  % (vserver_detail['id'])
+                    }
 
                     try:
                         # then update the resource
@@ -244,12 +247,12 @@ class InfraWorkload(APIView):
                             content = json.JSONDecoder().decode(content)
                             self._logger.debug("AAI update %s response: %s" % (aai_resource['uri'], content))
                     except Exception as e:
-                        self._logger.error(traceback.format_exc())
+                        self._logger.error(traceback.format_exc(e))
                         pass
 
                     aai_resource_transactions = {"put": [aai_resource]}
                     transactions.append(aai_resource_transactions)
-                    #self._logger.debug("aai_resource :%s" % aai_resource_transactions)
+                    # self._logger.debug("aai_resource :%s" % aai_resource_transactions)
                     pass
 
         for resource in resources:
@@ -260,8 +263,13 @@ class InfraWorkload(APIView):
                 service_type = "network"
                 resource_uri = "/v2.0/ports/%s" % (resource['physical_resource_id'])
                 self._logger.info("retrieve vserver detail, URI:%s" % resource_uri)
-                retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner, regionid, v2_token_resp_json, service_type,
-                                                       resource_uri, None, "GET")
+                retcode, content, os_status = helper.MultiCloudServiceHelper(cloud_owner,
+                                                                             regionid,
+                                                                             v2_token_resp_json,
+                                                                             service_type,
+                                                                             resource_uri,
+                                                                             None,
+                                                                             "GET")
                 self._logger.debug(" resp data:%s" % content)
 
                 vport_detail = content.get('port', None) if retcode == 0 and content else None
@@ -275,7 +283,7 @@ class InfraWorkload(APIView):
                             "interface-id": vport_detail['id'],
                             "macaddr": vport_detail['mac_address']
                         },
-                        'uri': aai_cloud_region + "/vservers/vserver/%s/l-interfaces/l-interface/%s" \
+                        'uri': aai_cloud_region + "/vservers/vserver/%s/l-interfaces/l-interface/%s"
                                                   % (vport_detail['device_id'], vport_detail['name'])
                     }
                     try:
@@ -287,7 +295,7 @@ class InfraWorkload(APIView):
                             content = json.JSONDecoder().decode(content)
                             self._logger.debug("AAI update %s response: %s" % (aai_resource['uri'], content))
                     except Exception as e:
-                        self._logger.error(traceback.format_exc())
+                        self._logger.error(traceback.format_exc(e))
                         pass
 
                     aai_resource_transactions = {"put": [aai_resource]}
@@ -299,7 +307,7 @@ class InfraWorkload(APIView):
         aai_transactions = {"transactions": transactions}
         self._logger.debug("aai_transactions :%s" % aai_transactions)
 
-        return  aai_transactions
+        return aai_transactions
 
     def delete(self, request, vimid="", requri=""):
         self._logger.info("vimid, requri: %s, %s" % (vimid, requri))
@@ -320,7 +328,7 @@ class InfraWorkload(APIView):
             retcode, v2_token_resp_json, os_status = helper.MultiCloudIdentityHelper(
                 settings.MULTICLOUD_API_V1_PREFIX,
                 cloud_owner, regionid, "/v2.0/tokens")
-            if retcode > 0  or not v2_token_resp_json:
+            if retcode > 0 or not v2_token_resp_json:
                 logger.error("authenticate fails:%s, %s, %s" % (cloud_owner, regionid, v2_token_resp_json))
                 return
             # tenant_id = v2_token_resp_json["access"]["token"]["tenant"]["id"]
@@ -361,7 +369,7 @@ class InfraWorkload(APIView):
             return Response(status=os_status)
         except VimDriverNewtonException as e:
             self._logger.error("Plugin exception> status:%s,error:%s"
-                                  % (e.status_code, e.content))
+                               % (e.status_code, e.content))
             return Response(data={'error': e.content}, status=e.status_code)
         except HttpError as e:
             self._logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
@@ -391,22 +399,22 @@ class APIv1InfraWorkload(InfraWorkload):
         # self._logger = logger
 
     def post(self, request, cloud_owner="", cloud_region_id="", requri=""):
-        #self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
-        #self._logger.debug("META: %s" % request.META)
+        # self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
+        # self._logger.debug("META: %s" % request.META)
 
         vimid = extsys.encode_vim_id(cloud_owner, cloud_region_id)
         return super(APIv1InfraWorkload, self).post(request, vimid, requri)
 
     def get(self, request, cloud_owner="", cloud_region_id="", requri=""):
-        #self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
-        #self._logger.debug("META: %s" % request.META)
+        # self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
+        # self._logger.debug("META: %s" % request.META)
 
         vimid = extsys.encode_vim_id(cloud_owner, cloud_region_id)
         return super(APIv1InfraWorkload, self).get(request, vimid, requri)
 
     def delete(self, request, cloud_owner="", cloud_region_id="", requri=""):
-        #self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
-        #self._logger.debug("META: %s" % request.META)
+        # self._logger.info("cloud owner, cloud region id, data: %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
+        # self._logger.debug("META: %s" % request.META)
 
         vimid = extsys.encode_vim_id(cloud_owner, cloud_region_id)
         return super(APIv1InfraWorkload, self).delete(request, vimid, requri)
diff --git a/pike/pike/settings.py b/pike/pike/settings.py
index d40c9870..406a58da 100644
--- a/pike/pike/settings.py
+++ b/pike/pike/settings.py
@@ -93,7 +93,7 @@ CACHES = {
 MSB_SERVICE_ADDR = os.environ.get('MSB_ADDR', "127.0.0.1")
 MSB_SERVICE_PORT = os.environ.get('MSB_PORT', "80")
 
-#[Multicloud]
+# [Multicloud]
 MULTICLOUD_PREFIX = "http://%s:%s/api/multicloud-pike/v0" % (
     MSB_SERVICE_ADDR, MSB_SERVICE_PORT)
 
@@ -129,7 +129,7 @@ config.yamlConfig(filepath=LOGGING_FILE, watchDog=True)
 
 if 'test' in sys.argv:
 
-    #LOGGING['handlers']['pike_handler']['filename'] = 'logs/pike.log'
+    # LOGGING['handlers']['pike_handler']['filename'] = 'logs/pike.log'
 
     REST_FRAMEWORK = {}
     import platform
diff --git a/pike/pike/urls.py b/pike/pike/urls.py
index 8b8eb3be..f347da1a 100644
--- a/pike/pike/urls.py
+++ b/pike/pike/urls.py
@@ -27,9 +27,9 @@ urlpatterns = [
     url(r'^api/multicloud-pike/v0/(?P<vimid>[0-9a-zA-Z_-]+)/exten',
         include('pike.extensions.urls')),
     url(r'^api/multicloud-pike/v0/(?P<vimid>[0-9a-zA-Z_-]+)/',
-             include('pike.proxy.urls')),
+        include('pike.proxy.urls')),
     url(r'^api/multicloud-pike/v0/(?P<vimid>[0-9a-zA-Z_-]+)/tenants$',
-             tenants.Tenants.as_view()),
+        tenants.Tenants.as_view()),
     url(r'^api/multicloud-pike/v0/(?P<vimid>[0-9a-zA-Z_-]+)/'
         '(?P<tenantid>[0-9a-zA-Z_-]{20,})/', include('pike.requests.urls')),
     url(r'^api/multicloud-pike/v0/(?P<vimid>[0-9a-zA-Z_-]+)/capacity_check/?$',
@@ -52,11 +52,9 @@ urlpatterns = [
     url(r'^api/multicloud-pike/v1/(?P<cloud_owner>[0-9a-zA-Z_-]+)/(?P<cloud_region_id>[0-9a-zA-Z_-]+)/'
         '(?P<tenantid>[0-9a-zA-Z_-]{20,})/', include('pike.requests.urlsV1')),
     url(r'^api/multicloud-pike/v1/(?P<cloud_owner>[0-9a-zA-Z_-]+)/(?P<cloud_region_id>[0-9a-zA-Z_-]+)/capacity_check/?$',
-        capacity.APIv1CapacityCheck.as_view()), 
+        capacity.APIv1CapacityCheck.as_view()),
     url(r'^api/multicloud-pike/v1/(?P<cloud_owner>[0-9a-zA-Z_-]+)/(?P<cloud_region_id>[0-9a-zA-Z_-]+)/infra_workload/?$',
         infra_workload.APIv1InfraWorkload.as_view()),
     url(r'^api/multicloud-pike/v1/(?P<cloud_owner>[0-9a-zA-Z_-]+)/(?P<cloud_region_id>[0-9a-zA-Z_-]+)/infra_workload/(?P<requri>[0-9a-zA-Z_-]*)/?$',
         infra_workload.APIv1InfraWorkload.as_view()),
 ]
-
-