Fix string interpolations in logging calls

String interpolation should be delayed to be handled
by the logging code, rather than being done
at the point of the logging call.

* https://docs.openstack.org/oslo.i18n/latest/user/guidelines.html#adding-variables-to-log-messages

The check rule for string format method will be added
in openstack/hacking.

TrivialFix
Change-Id: I6ec56ec35bcb33d6627a47b66c4f7fc2c6f22658

nova/policy.py

@@ -234,10 +234,10 @@ def verify_deprecated_policy(old_policy, new_policy, default_rule, context):
         current_rule = None
 
     if current_rule != default_rule:
-        LOG.warning("Start using the new action '{0}'. The existing "
-                    "action '{1}' is being deprecated and will be "
-                    "removed in future release.".format(new_policy,
-                                                        old_policy))
+        LOG.warning("Start using the new action '%(new_policy)s'. "
+                    "The existing action '%(old_policy)s' is being deprecated "
+                    "and will be removed in future release.",
+                    {'new_policy': new_policy, 'old_policy': old_policy})
         context.can(old_policy)
         return True
     else:

nova/tests/unit/api/openstack/compute/test_flavor_manage.py

@@ -563,10 +563,11 @@ class FlavorManagerPolicyEnforcementV21(test.TestCase):
         self.assertEqual(
             "Policy doesn't allow %s to be performed." % default_flavor_policy,
             exc.format_message())
-        mock_warning.assert_called_with("Start using the new "
-            "action '{0}'. The existing action '{1}' is being deprecated and "
-            "will be removed in future release.".format(create_flavor_policy,
-                                                        default_flavor_policy))
+        mock_warning.assert_called_with("Start using the new action "
+            "'%(new_policy)s'. The existing action '%(old_policy)s' is being "
+            "deprecated and will be removed in future release.",
+            {'new_policy': create_flavor_policy,
+             'old_policy': default_flavor_policy})
 
     @mock.patch.object(policy.LOG, 'warning')
     def test_delete_policy_rbac_inherit_default(self, mock_warning):
@@ -597,9 +598,10 @@ class FlavorManagerPolicyEnforcementV21(test.TestCase):
         }
         self.flavor = self.controller._create(self.adm_req, body=body)
         mock_warning.assert_called_once_with("Start using the new "
-            "action '{0}'. The existing action '{1}' is being deprecated and "
-            "will be removed in future release.".format(create_flavor_policy,
-                                                        default_flavor_policy))
+            "action '%(new_policy)s'. The existing action '%(old_policy)s' "
+            "is being deprecated and will be removed in future release.",
+            {'new_policy': create_flavor_policy,
+             'old_policy': default_flavor_policy})
         # check for success as admin
         flavor = self.flavor
         self.controller._delete(self.adm_req, flavor['flavor']['id'])
@@ -614,9 +616,10 @@ class FlavorManagerPolicyEnforcementV21(test.TestCase):
             "Policy doesn't allow %s to be performed." % default_flavor_policy,
             exc.format_message())
         mock_warning.assert_called_with("Start using the new "
-            "action '{0}'. The existing action '{1}' is being deprecated and "
-            "will be removed in future release.".format(delete_flavor_policy,
-                                                        default_flavor_policy))
+            "action '%(new_policy)s'. The existing action '%(old_policy)s' "
+            "is being deprecated and will be removed in future release.",
+            {'new_policy': delete_flavor_policy,
+             'old_policy': default_flavor_policy})
 
     def test_create_policy_rbac_no_change_to_default_action_rule(self):
         """Test to verify the correct action is being enforced. When the

nova/tests/unit/test_policy.py

@@ -193,9 +193,9 @@ class PolicyTestCase(test.NoDBTestCase):
             old_policy, new_policy, default_rule, self.context)
 
         mock_warning.assert_called_once_with("Start using the new "
-            "action '{0}'. The existing action '{1}' is being deprecated and "
-            "will be removed in future release.".format(new_policy,
-                                                        old_policy))
+            "action '%(new_policy)s'. The existing action '%(old_policy)s' "
+            "is being deprecated and will be removed in future release.",
+            {'new_policy': new_policy, 'old_policy': old_policy})
         self.assertTrue(using_old_action)
 
     def test_verify_deprecated_policy_using_new_action(self):

nova/virt/libvirt/storage/rbd_utils.py

@@ -210,10 +210,9 @@ class RBDDriver(object):
             return False
 
         if image_meta.get('disk_format') != 'raw':
-            reason = ("rbd image clone requires image format to be "
-                      "'raw' but image {0} is '{1}'").format(
-                          url, image_meta.get('disk_format'))
-            LOG.debug(reason)
+            LOG.debug("rbd image clone requires image format to be "
+                      "'raw' but image %s is '%s'",
+                      url, image_meta.get('disk_format'))
             return False
 
         # check that we can read the image