From 0764f5dab12034efdc41d35ccd627f2a6618c459 Mon Sep 17 00:00:00 2001
From: Andreas Jaeger <aj@suse.com>
Date: Thu, 16 Apr 2020 10:41:24 +0200
Subject: [PATCH] Update hacking for Python3

The repo is Python 3 now, so update hacking to version 3.0.1 which
supports Python 3.

Fix problems found.

Remove hacking and friends from lower-constraints, they are not needed
for installation.

Change-Id: I6691687f0cd2fe4c9e7f2a76d333ca9eacb0cbf3
---
 karbor/api/common.py                          |  2 +-
 karbor/api/openstack/__init__.py              |  2 +-
 karbor/api/v1/triggers.py                     |  2 +-
 karbor/cmd/api.py                             | 16 ++++++++--------
 karbor/cmd/manage.py                          | 19 ++++++++-----------
 karbor/cmd/operationengine.py                 | 14 +++++++-------
 karbor/cmd/protection.py                      | 14 +++++++-------
 karbor/db/sqlalchemy/api.py                   |  1 +
 karbor/quota.py                               |  4 ++--
 karbor/services/protection/bank_plugin.py     |  8 ++++----
 karbor/services/protection/flows/copy.py      |  6 +++---
 .../image/image_protection_plugin.py          |  2 +-
 .../network/neutron_protection_plugin.py      | 10 +++++-----
 .../volume/cinder_protection_plugin.py        |  2 +-
 .../volume/volume_glance_plugin.py            |  2 +-
 .../test_network_protectable_plugin.py        |  4 ++--
 .../plugins/test_pod_protectable_plugin.py    |  2 +-
 .../test_cinder_protection_plugin.py          |  8 ++++----
 .../test_cinder_snapshot_protection_plugin.py |  2 +-
 .../test_glance_protection_plugin.py          |  2 +-
 karbor/tests/unit/protection/test_graph.py    | 14 +++++++-------
 .../test_neutron_protection_plugin.py         | 18 +++++++++---------
 .../protection/test_nova_protection_plugin.py |  3 +--
 .../protection/test_pod_protection_plugin.py  |  2 +-
 karbor/wsgi/wsgi.py                           | 12 ++++++------
 lower-constraints.txt                         |  5 -----
 test-requirements.txt                         |  2 +-
 tools/install_venv.py                         |  1 +
 tox.ini                                       |  4 +++-
 29 files changed, 89 insertions(+), 94 deletions(-)

diff --git a/karbor/api/common.py b/karbor/api/common.py
index 4c1aa2b4..5f4ed6a2 100644
--- a/karbor/api/common.py
+++ b/karbor/api/common.py
@@ -188,7 +188,7 @@ def get_request_url(request):
     forwarded = headers.get('X-Forwarded-Host')
     if forwarded:
         url_parts = list(urllib.parse.urlsplit(url))
-        url_parts[1] = re.split(',\s?', forwarded)[-1]
+        url_parts[1] = re.split(r',\s?', forwarded)[-1]
         url = urllib.parse.urlunsplit(url_parts).rstrip('/')
     return url
 
diff --git a/karbor/api/openstack/__init__.py b/karbor/api/openstack/__init__.py
index fd7d1792..60cb2bf0 100644
--- a/karbor/api/openstack/__init__.py
+++ b/karbor/api/openstack/__init__.py
@@ -23,7 +23,7 @@ import routes
 
 class APIMapper(routes.Mapper):
     def routematch(self, url=None, environ=None):
-        if url is "":
+        if url == "":
             result = self._match("", environ)
             return result[0], result[1]
         return routes.Mapper.routematch(self, url, environ)
diff --git a/karbor/api/v1/triggers.py b/karbor/api/v1/triggers.py
index d27b7c72..2ea6eb96 100644
--- a/karbor/api/v1/triggers.py
+++ b/karbor/api/v1/triggers.py
@@ -146,7 +146,7 @@ class TriggersController(wsgi.Controller):
         try:
             with StartNotification(context, id=id):
                 self.operationengine_api.delete_trigger(context, id)
-        except exception.TriggerNotFound as ex:
+        except exception.TriggerNotFound:
             pass
         except (exception.DeleteTriggerNotAllowed,
                 Exception) as ex:
diff --git a/karbor/cmd/api.py b/karbor/cmd/api.py
index 76cf213b..13e5bccd 100644
--- a/karbor/cmd/api.py
+++ b/karbor/cmd/api.py
@@ -16,19 +16,19 @@
 import eventlet
 eventlet.monkey_patch()
 
-import sys
+import sys  # noqa: E402
 
-from oslo_config import cfg
-from oslo_log import log as logging
+from oslo_config import cfg  # noqa: E402
+from oslo_log import log as logging  # noqa: E402
 
 # Need to register global_opts
 from karbor.common import config  # noqa
-from karbor import i18n
+from karbor import i18n  # noqa: E402
 i18n.enable_lazy()
-from karbor import objects
-from karbor import rpc
-from karbor import service
-from karbor import version
+from karbor import objects  # noqa: E402
+from karbor import rpc  # noqa: E402
+from karbor import service  # noqa: E402
+from karbor import version  # noqa: E402
 
 
 CONF = cfg.CONF
diff --git a/karbor/cmd/manage.py b/karbor/cmd/manage.py
index 6d11b3dc..50d2c8ca 100644
--- a/karbor/cmd/manage.py
+++ b/karbor/cmd/manage.py
@@ -15,9 +15,6 @@
   CLI interface for karbor management.
 """
 
-from __future__ import print_function
-
-
 import os
 import sys
 
@@ -31,14 +28,14 @@ i18n.enable_lazy()
 
 # Need to register global_opts
 from karbor.common import config  # noqa
-from karbor import context
-from karbor import db
-from karbor.db import migration as db_migration
-from karbor.db.sqlalchemy import api as db_api
-from karbor.i18n import _
-from karbor import objects
-from karbor import utils
-from karbor import version
+from karbor import context  # noqa: E402
+from karbor import db  # noqa: E402
+from karbor.db import migration as db_migration  # noqa: E402
+from karbor.db.sqlalchemy import api as db_api  # noqa: E402
+from karbor.i18n import _  # noqa: E402
+from karbor import objects  # noqa: E402
+from karbor import utils  # noqa: E402
+from karbor import version  # noqa: E402
 
 
 CONF = cfg.CONF
diff --git a/karbor/cmd/operationengine.py b/karbor/cmd/operationengine.py
index b873c96b..b0986a4c 100644
--- a/karbor/cmd/operationengine.py
+++ b/karbor/cmd/operationengine.py
@@ -16,19 +16,19 @@
 import eventlet
 eventlet.monkey_patch()
 
-import sys
+import sys  # noqa: E402
 
-from oslo_config import cfg
-from oslo_log import log as logging
+from oslo_config import cfg  # noqa: E402
+from oslo_log import log as logging  # noqa: E402
 
-from karbor import i18n
+from karbor import i18n  # noqa: E402
 i18n.enable_lazy()
-from karbor import objects
+from karbor import objects  # noqa: E402
 
 # Need to register global_opts
 from karbor.common import config  # noqa
-from karbor import service
-from karbor import version
+from karbor import service  # noqa: E402
+from karbor import version  # noqa: E402
 
 
 CONF = cfg.CONF
diff --git a/karbor/cmd/protection.py b/karbor/cmd/protection.py
index e8b5fa22..2082b76a 100644
--- a/karbor/cmd/protection.py
+++ b/karbor/cmd/protection.py
@@ -16,19 +16,19 @@
 import eventlet
 eventlet.monkey_patch()
 
-import sys
+import sys  # noqa: E402
 
-from oslo_config import cfg
-from oslo_log import log as logging
+from oslo_config import cfg  # noqa: E402
+from oslo_log import log as logging  # noqa: E402
 
-from karbor import i18n
+from karbor import i18n  # noqa: E402
 i18n.enable_lazy()
-from karbor import objects
+from karbor import objects  # noqa: E402
 
 # Need to register global_opts
 from karbor.common import config  # noqa
-from karbor import service
-from karbor import version
+from karbor import service  # noqa: E402
+from karbor import version  # noqa: E402
 
 
 CONF = cfg.CONF
diff --git a/karbor/db/sqlalchemy/api.py b/karbor/db/sqlalchemy/api.py
index 82966286..8c198cac 100644
--- a/karbor/db/sqlalchemy/api.py
+++ b/karbor/db/sqlalchemy/api.py
@@ -78,6 +78,7 @@ def get_session(**kwargs):
 def dispose_engine():
     get_engine().dispose()
 
+
 _DEFAULT_QUOTA_NAME = 'default'
 
 
diff --git a/karbor/quota.py b/karbor/quota.py
index d18c6950..a88614d8 100644
--- a/karbor/quota.py
+++ b/karbor/quota.py
@@ -187,9 +187,9 @@ class DbQuotaDriver(object):
 
         # Filter resources
         if has_sync:
-            sync_filt = lambda x: hasattr(x, 'sync')
+            sync_filt = lambda x: hasattr(x, 'sync')  # noqa: E731
         else:
-            sync_filt = lambda x: not hasattr(x, 'sync')
+            sync_filt = lambda x: not hasattr(x, 'sync')  # noqa: E731
         desired = set(keys)
         sub_resources = dict((k, v) for k, v in resources.items()
                              if k in desired and sync_filt(v))
diff --git a/karbor/services/protection/bank_plugin.py b/karbor/services/protection/bank_plugin.py
index 9abfb1e4..82b0a5ba 100644
--- a/karbor/services/protection/bank_plugin.py
+++ b/karbor/services/protection/bank_plugin.py
@@ -71,8 +71,8 @@ def validate_dir(key):
 
 
 class Bank(object):
-    _KEY_VALIDATION = re.compile('^[A-Za-z0-9/_.\-@]+(?<!/)$')
-    _KEY_DOT_VALIDATION = re.compile('/\.{1,2}(/|$)')
+    _KEY_VALIDATION = re.compile(r'^[A-Za-z0-9/_.\-@]+(?<!/)$')
+    _KEY_DOT_VALIDATION = re.compile(r'/\.{1,2}(/|$)')
 
     def __init__(self, plugin):
         super(Bank, self).__init__()
@@ -162,8 +162,8 @@ class BankSection(object):
     a bank to another entity and make sure it is only capable of
     accessing part of it.
     """
-    _SECTION_VALIDATION = re.compile('^/?[A-Za-z0-9/_.\-@]*/?$')
-    _SECTION_DOT_VALIDATION = re.compile('/\.{1,2}(/|$)')
+    _SECTION_VALIDATION = re.compile(r'^/?[A-Za-z0-9/_.\-@]*/?$')
+    _SECTION_DOT_VALIDATION = re.compile(r'/\.{1,2}(/|$)')
 
     def __init__(self, bank, section, is_writable=True):
         super(BankSection, self).__init__()
diff --git a/karbor/services/protection/flows/copy.py b/karbor/services/protection/flows/copy.py
index 96a00563..66508b0e 100644
--- a/karbor/services/protection/flows/copy.py
+++ b/karbor/services/protection/flows/copy.py
@@ -75,7 +75,7 @@ def get_flow(context, protectable_registry, workflow_engine, plan, provider,
     checkpoint_copy.commit()
     operation_log = utils.create_operation_log(context, checkpoint_copy,
                                                constants.OPERATION_COPY)
-    flow_name = "Copy_" + plan.get('id')+checkpoint.id
+    flow_name = "Copy_" + plan.get('id') + checkpoint.id
     copy_flow = workflow_engine.build_flow(flow_name, 'linear')
     plugins = provider.load_plugins()
     parameters = {}
@@ -98,10 +98,10 @@ def get_flow(context, protectable_registry, workflow_engine, plan, provider,
                   }
     workflow_engine.add_tasks(
         copy_flow,
-        InitiateCopyTask(name='InitiateCopyTask_'+checkpoint_copy.id,
+        InitiateCopyTask(name='InitiateCopyTask_' + checkpoint_copy.id,
                          inject=store_dict),
         resources_task_flow,
-        CompleteCopyTask(name='CompleteCopyTask_'+checkpoint_copy.id,
+        CompleteCopyTask(name='CompleteCopyTask_' + checkpoint_copy.id,
                          inject=store_dict),
     )
     return copy_flow
diff --git a/karbor/services/protection/protection_plugins/image/image_protection_plugin.py b/karbor/services/protection/protection_plugins/image/image_protection_plugin.py
index bdcdf5b9..5fb358cd 100644
--- a/karbor/services/protection/protection_plugins/image/image_protection_plugin.py
+++ b/karbor/services/protection/protection_plugins/image/image_protection_plugin.py
@@ -24,7 +24,7 @@ from oslo_log import log as logging
 
 image_backup_opts = [
     cfg.IntOpt('backup_image_object_size',
-               default=65536*10,
+               default=65536 * 10,
                help='The size in bytes of instance image objects. '
                     'The value must be a multiple of 65536('
                     'the size of image\'s chunk).'),
diff --git a/karbor/services/protection/protection_plugins/network/neutron_protection_plugin.py b/karbor/services/protection/protection_plugins/network/neutron_protection_plugin.py
index 6217edc0..8b05f9b2 100644
--- a/karbor/services/protection/protection_plugins/network/neutron_protection_plugin.py
+++ b/karbor/services/protection/protection_plugins/network/neutron_protection_plugin.py
@@ -66,7 +66,7 @@ class ProtectOperation(protection_plugin.Operation):
                 'subnets',
                 'tags',
                 'tenant_id'
-                ]
+            ]
 
             for network in networks:
                 network_metadata = {
@@ -101,7 +101,7 @@ class ProtectOperation(protection_plugin.Operation):
                 'network_id',
                 'subnetpool_id',
                 'tenant_id'
-                ]
+            ]
 
             for subnet in subnets:
                 subnet_metadata = {
@@ -137,7 +137,7 @@ class ProtectOperation(protection_plugin.Operation):
                 'security_groups',
                 'status',
                 'tenant_id'
-                ]
+            ]
 
             for port in ports:
                 port_metadata = {
@@ -165,7 +165,7 @@ class ProtectOperation(protection_plugin.Operation):
                 'name',
                 'routes',
                 'status'
-                ]
+            ]
 
             for router in routers:
                 router_metadata = {
@@ -191,7 +191,7 @@ class ProtectOperation(protection_plugin.Operation):
                 'name',
                 'security_group_rules',
                 'tenant_id'
-                ]
+            ]
 
             for sg in sgs:
                 sg_metadata = {k: sg[k] for k in sg if k in allowed_keys}
diff --git a/karbor/services/protection/protection_plugins/volume/cinder_protection_plugin.py b/karbor/services/protection/protection_plugins/volume/cinder_protection_plugin.py
index ef30adfc..3d2bcf91 100644
--- a/karbor/services/protection/protection_plugins/volume/cinder_protection_plugin.py
+++ b/karbor/services/protection/protection_plugins/volume/cinder_protection_plugin.py
@@ -264,7 +264,7 @@ class RestoreOperation(protection_plugin.Operation):
         # create volume
         volume_property = {
             'name': parameters.get(
-                'restore_name',  '%s@%s' % (checkpoint.id, resource_id))
+                'restore_name', '%s@%s' % (checkpoint.id, resource_id))
         }
         if 'restore_description' in parameters:
             volume_property['description'] = parameters['restore_description']
diff --git a/karbor/services/protection/protection_plugins/volume/volume_glance_plugin.py b/karbor/services/protection/protection_plugins/volume/volume_glance_plugin.py
index b631a8b3..bd54293f 100644
--- a/karbor/services/protection/protection_plugins/volume/volume_glance_plugin.py
+++ b/karbor/services/protection/protection_plugins/volume/volume_glance_plugin.py
@@ -37,7 +37,7 @@ volume_glance_opts = [
         'it. Minimizes the time the volume is unavailable.'
     ),
     cfg.IntOpt('backup_image_object_size',
-               default=65536*512,
+               default=65536 * 512,
                help='The size in bytes of temporary image objects. '
                     'The value must be a multiple of 65536('
                     'the size of image\'s chunk).'),
diff --git a/karbor/tests/unit/plugins/test_network_protectable_plugin.py b/karbor/tests/unit/plugins/test_network_protectable_plugin.py
index d28b4c9a..ee7b0919 100644
--- a/karbor/tests/unit/plugins/test_network_protectable_plugin.py
+++ b/karbor/tests/unit/plugins/test_network_protectable_plugin.py
@@ -126,7 +126,7 @@ class NetworkProtectablePluginTest(base.TestCase):
              u'description': u'',
              u'name': u'ext_net',
              u'tenant_id': u'abcd'}
-            ]}
+        ]}
 
         mock_client_list_networks.return_value = fake_network_info
         self.assertEqual(plugin.list_resources(self._context),
@@ -149,7 +149,7 @@ class NetworkProtectablePluginTest(base.TestCase):
              u'description': u'',
              u'name': u'ext_net',
              u'tenant_id': u'abcd'}
-            ]}
+        ]}
         mock_client_list_networks.return_value = fake_network_info
         self.assertEqual(plugin.get_dependent_resources(self._context,
                                                         project),
diff --git a/karbor/tests/unit/plugins/test_pod_protectable_plugin.py b/karbor/tests/unit/plugins/test_pod_protectable_plugin.py
index 7eb605c5..64b3b143 100644
--- a/karbor/tests/unit/plugins/test_pod_protectable_plugin.py
+++ b/karbor/tests/unit/plugins/test_pod_protectable_plugin.py
@@ -85,4 +85,4 @@ class PodProtectablePluginTest(base.TestCase):
                                  uuid.uuid5(uuid.NAMESPACE_OID,
                                             "default:busybox-test"),
                                  {'name': 'default:busybox-test'})
-            )
+        )
diff --git a/karbor/tests/unit/protection/test_cinder_protection_plugin.py b/karbor/tests/unit/protection/test_cinder_protection_plugin.py
index 6d9d3a74..d87bbf7c 100644
--- a/karbor/tests/unit/protection/test_cinder_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_cinder_protection_plugin.py
@@ -363,7 +363,7 @@ class CinderProtectionPluginTest(base.TestCase):
             mocks['volumes'].get.return_value.status = 'available'
             mocks['restores'].restore = RestoreResponse(volume_id)
             call_hooks(operation, checkpoint, resource, self.cntxt, parameters,
-                       **{'restore':  None, 'new_resources': {}})
+                       **{'restore': None, 'new_resources': {}})
             mocks['volumes'].update.assert_called_with(
                 volume_id,
                 **{'name': parameters['restore_name'],
@@ -398,7 +398,7 @@ class CinderProtectionPluginTest(base.TestCase):
             mocks['backups'].get.return_value = mock.Mock()
             mocks['backups'].get.return_value.status = 'available'
             call_hooks(operation, checkpoint, resource, self.cntxt, parameters,
-                       **{'verify':  None, 'new_resources': {}})
+                       **{'verify': None, 'new_resources': {}})
             mock_update_verify.assert_called_with(
                 None, resource.type, volume_id, 'available')
 
@@ -425,7 +425,7 @@ class CinderProtectionPluginTest(base.TestCase):
             self.assertRaises(
                 exception.KarborException, call_hooks,
                 operation, checkpoint, resource, self.cntxt,
-                {}, **{'restore':  None})
+                {}, **{'restore': None})
 
     @mock.patch('karbor.services.protection.clients.cinder.create')
     @mock.patch('karbor.services.protection.protection_plugins.utils.'
@@ -457,7 +457,7 @@ class CinderProtectionPluginTest(base.TestCase):
             self.assertRaises(
                 exception.RestoreResourceFailed, call_hooks,
                 operation, checkpoint, resource, self.cntxt,
-                {}, **{'restore':  None})
+                {}, **{'restore': None})
 
             mock_update_restore.assert_called_with(
                 None, resource.type, volume_id,
diff --git a/karbor/tests/unit/protection/test_cinder_snapshot_protection_plugin.py b/karbor/tests/unit/protection/test_cinder_snapshot_protection_plugin.py
index a6dac4fb..e1dc46dd 100644
--- a/karbor/tests/unit/protection/test_cinder_snapshot_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_cinder_snapshot_protection_plugin.py
@@ -227,6 +227,6 @@ class CinderSnapshotProtectionPluginTest(base.TestCase):
             fake_bank_section.get_object.return_value = {
                 "snapshot_id": "456"}
             call_hooks(operation, checkpoint, resource, self.cntxt, parameters,
-                       **{'verify':  None, 'new_resources': {}})
+                       **{'verify': None, 'new_resources': {}})
             mock_update_verify.assert_called_with(
                 None, resource.type, volume_id, 'available')
diff --git a/karbor/tests/unit/protection/test_glance_protection_plugin.py b/karbor/tests/unit/protection/test_glance_protection_plugin.py
index e110b2a3..87032af5 100644
--- a/karbor/tests/unit/protection/test_glance_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_glance_protection_plugin.py
@@ -225,7 +225,7 @@ class GlanceProtectionPluginTest(base.TestCase):
 
     @mock.patch('karbor.services.protection.protection_plugins.utils.'
                 'update_resource_verify_result')
-    def test_verify_backup(self,  mock_update_verify):
+    def test_verify_backup(self, mock_update_verify):
         resource = Resource(id="123",
                             type=constants.IMAGE_RESOURCE_TYPE,
                             name='fake')
diff --git a/karbor/tests/unit/protection/test_graph.py b/karbor/tests/unit/protection/test_graph.py
index 3b31417b..d343b413 100644
--- a/karbor/tests/unit/protection/test_graph.py
+++ b/karbor/tests/unit/protection/test_graph.py
@@ -28,17 +28,17 @@ class GraphBuilderTest(base.TestCase):
                 "A": ["B"],
                 "B": ["C"],
                 "C": [],
-                }, {"A"}),
+            }, {"A"}),
             ({
                 "A": [],
                 "B": ["C"],
                 "C": [],
-                }, {"A", "B"}),
+            }, {"A", "B"}),
             ({
                 "A": ["C"],
                 "B": ["C"],
                 "C": [],
-                }, {"A", "B"}),
+            }, {"A", "B"}),
         )
 
         for g, expected_result in test_matrix:
@@ -53,22 +53,22 @@ class GraphBuilderTest(base.TestCase):
                 "A": ["B"],
                 "B": ["C"],
                 "C": [],
-                }, False),
+            }, False),
             ({
                 "A": [],
                 "B": ["C"],
                 "C": [],
-                }, False),
+            }, False),
             ({
                 "A": ["C"],
                 "B": ["C"],
                 "C": ["A"],
-                }, True),
+            }, True),
             ({
                 "A": ["B"],
                 "B": ["C"],
                 "C": ["A"],
-                }, True),
+            }, True),
         )
 
         for g, expected_result in test_matrix:
diff --git a/karbor/tests/unit/protection/test_neutron_protection_plugin.py b/karbor/tests/unit/protection/test_neutron_protection_plugin.py
index e2ae1e2f..7d7723e9 100644
--- a/karbor/tests/unit/protection/test_neutron_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_neutron_protection_plugin.py
@@ -72,7 +72,7 @@ FakeNetworks = {'networks': [
      u'tenant_id': u'f6f6d0b2591f41acb8257656d70029fc',
      u'created_at': u'2016-04-25T07:14:53',
      u'mtu': 1500}
-    ]}
+]}
 
 FakeSubnets = {'subnets': [
     {u'description': u'',
@@ -93,7 +93,7 @@ FakeSubnets = {'subnets': [
      u'id': u'808c3b3f-3d79-4c5b-a5b6-95dd07abeb2d',
      u'subnetpool_id': None,
      u'name': u'ext_subnet'},
-    ]}
+]}
 
 FakePorts = {'ports': [
     {u'allowed_address_pairs': [],
@@ -121,7 +121,7 @@ FakePorts = {'ports': [
      u'created_at': u'2016-04-25T07:15:59',
      u'binding:vnic_type': u'normal',
      u'tenant_id': u''},
-    ]}
+]}
 
 FakeRoutes = {'routers': [
     {u'status': u'ACTIVE',
@@ -142,7 +142,7 @@ FakeRoutes = {'routers': [
      u'ha': False,
      u'id': u'7fc86d4b-4c0e-4ed8-8d39-e27b7c1b7ae8',
      u'name': u'provider_route'}
-    ]}
+]}
 
 FakeSecGroup = {'security_groups': [
     {u'tenant_id': u'23b119d06168447c8dbb4483d9567bd8',
@@ -185,7 +185,7 @@ FakeSecGroup = {'security_groups': [
              u'port_range_min': None,
              u'tenant_id': u'23b119d06168447c8dbb4483d9567bd8',
              u'id': u'c24e7148-820c-4147-9032-6fcdb96db6f7'}]},
-    ]}
+]}
 
 
 def call_hooks(operation, checkpoint, resource, context, parameters, **kwargs):
@@ -253,6 +253,7 @@ class FakeBankPlugin(BankPlugin):
     def get_owner_id(self, context=None):
         return
 
+
 fake_checkpointid = "checkpoint_id"
 fake_project_id = "abcd"
 fake_bank = Bank(FakeBankPlugin())
@@ -373,9 +374,8 @@ class NeutronProtectionPluginTest(base.TestCase):
                 "id": "4c0e-4ed8-8d39-e27b7c1b7ae8",
                 "admin_state_up": True,
                 "availability_zone_hints": [],
-                "fixed_ips":  {"network_id": "9bb2-4b8f-9eea-e45563efc420",
-                               "enable_snat": True
-                               }
+                "fixed_ips": {"network_id": "9bb2-4b8f-9eea-e45563efc420",
+                              "enable_snat": True}
             },
             "security-group_metadata": {
                 "id": "4ccc-44c0-bc50-b7bbfc3508eb",
@@ -392,7 +392,7 @@ class NeutronProtectionPluginTest(base.TestCase):
 
     @mock.patch('karbor.services.protection.protection_plugins.utils.'
                 'update_resource_verify_result')
-    def test_verify_backup(self,  mock_update_verify):
+    def test_verify_backup(self, mock_update_verify):
         resource = Resource(id="abcd",
                             type=constants.NETWORK_RESOURCE_TYPE,
                             name="test")
diff --git a/karbor/tests/unit/protection/test_nova_protection_plugin.py b/karbor/tests/unit/protection/test_nova_protection_plugin.py
index 7437eaba..19ff57b3 100644
--- a/karbor/tests/unit/protection/test_nova_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_nova_protection_plugin.py
@@ -392,7 +392,6 @@ class NovaProtectionPluginTest(base.TestCase):
         )
         resource_definition = {
             "resource_id": "vm_id_2",
-            "attach_metadata": {"vol_id_1": "/dev/vdb"},
             'boot_metadata': {'boot_device_type': 'volume'},
             "server_metadata": {
                 "availability_zone": "nova",
@@ -512,7 +511,7 @@ class NovaProtectionPluginTest(base.TestCase):
 
     @mock.patch('karbor.services.protection.protection_plugins.utils.'
                 'update_resource_verify_result')
-    def test_verify_backup(self,  mock_update_verify):
+    def test_verify_backup(self, mock_update_verify):
         resource = Resource(id="123",
                             type=constants.SERVER_RESOURCE_TYPE,
                             name='fake')
diff --git a/karbor/tests/unit/protection/test_pod_protection_plugin.py b/karbor/tests/unit/protection/test_pod_protection_plugin.py
index e94684de..7097a3c3 100644
--- a/karbor/tests/unit/protection/test_pod_protection_plugin.py
+++ b/karbor/tests/unit/protection/test_pod_protection_plugin.py
@@ -160,7 +160,7 @@ class PodProtectionPluginTest(base.TestCase):
 
     @mock.patch('karbor.services.protection.protection_plugins.utils.'
                 'update_resource_verify_result')
-    def test_verify_backup(self,  mock_update_verify):
+    def test_verify_backup(self, mock_update_verify):
         resource = Resource(id="c88b92a8-e8b4-504c-bad4-343d92061871",
                             type=constants.POD_RESOURCE_TYPE,
                             name='default:busybox-test')
diff --git a/karbor/wsgi/wsgi.py b/karbor/wsgi/wsgi.py
index 95f6ba8a..7b1096a8 100644
--- a/karbor/wsgi/wsgi.py
+++ b/karbor/wsgi/wsgi.py
@@ -20,17 +20,17 @@ from karbor import objects
 
 warnings.simplefilter('once', DeprecationWarning)
 
-from oslo_config import cfg
-from oslo_log import log as logging
-from oslo_service import wsgi
+from oslo_config import cfg  # noqa: E402
+from oslo_log import log as logging  # noqa: E402
+from oslo_service import wsgi  # noqa: E402
 
-from karbor import i18n
+from karbor import i18n  # noqa: E402
 i18n.enable_lazy()
 
 # Need to register global_opts
 from karbor.common import config  # noqa
-from karbor import rpc
-from karbor import version
+from karbor import rpc  # noqa: E402
+from karbor import version  # noqa: E402
 
 CONF = cfg.CONF
 
diff --git a/lower-constraints.txt b/lower-constraints.txt
index 759512b4..c793383b 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -28,11 +28,9 @@ eventlet==0.18.2
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
-flake8==2.5.5
 futurist==1.8.0
 google-auth==1.4.1
 greenlet==0.4.10
-hacking==0.12.0
 icalendar==3.10
 idna==2.6
 imagesize==1.0.0
@@ -50,7 +48,6 @@ kubernetes==5.0.0
 linecache2==1.0.0
 Mako==1.0.7
 MarkupSafe==1.0
-mccabe==0.2.1
 mock==2.0.0
 monotonic==1.4
 mox3==0.25.0
@@ -86,7 +83,6 @@ packaging==17.1
 Paste==2.0.2
 PasteDeploy==1.5.0
 pbr==2.0.0
-pep8==1.5.7
 pika-pool==0.1.3
 pika==0.10.0
 prettytable==0.7.2
@@ -94,7 +90,6 @@ pyasn1-modules==0.2.1
 pyasn1==0.4.2
 pycadf==2.7.0
 pycparser==2.18
-pyflakes==0.8.1
 Pygments==2.2.0
 pyinotify==0.9.6
 pyOpenSSL==17.5.0
diff --git a/test-requirements.txt b/test-requirements.txt
index d25713c9..e8cfab98 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
+hacking!=3.0.1,<3.1.0 # Apache-2.0
 botocore>=1.5.1 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 croniter>=0.3.4 # MIT License
diff --git a/tools/install_venv.py b/tools/install_venv.py
index 4648058d..bced3431 100644
--- a/tools/install_venv.py
+++ b/tools/install_venv.py
@@ -67,5 +67,6 @@ def main(argv):
     install.install_dependencies()
     print_help()
 
+
 if __name__ == '__main__':
     main(sys.argv)
diff --git a/tox.ini b/tox.ini
index 09918722..d5897618 100644
--- a/tox.ini
+++ b/tox.ini
@@ -75,7 +75,9 @@ commands = oslopolicy-sample-generator --config-file=etc/karbor-policy-generator
 
 [flake8]
 show-source = True
-ignore =
+# W503 line break before binary operator
+# W504 line break after binary operator
+ignore = W503,W504
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,releasenotes