Remove deprecated network_api_class option

This was deprecated in Mitaka and is removed in Newton.

Change-Id: Ia8e3faba59b30fad284041f5b1ba543824d1ccac

nova/conf/network.py

@@ -257,12 +257,6 @@ with the name 'mtu'.
 
     None
 """),
-    cfg.StrOpt('network_api_class',
-               default=NOVA_NET_API,
-               help='DEPRECATED: The full class name of the '
-                    'network API class to use. ``use_neutron`` '
-                    'should be used instead.',
-               deprecated_for_removal=True),
     cfg.BoolOpt('use_neutron',
                 default=False,
                 help="Whether to use Neutron or Nova Network as the back end "

nova/network/__init__.py

@@ -18,7 +18,6 @@ from oslo_log import log as logging
 from oslo_utils import importutils
 
 import nova.conf
-from nova.i18n import _LW
 
 LOG = logging.getLogger(__name__)
 
@@ -34,31 +33,11 @@ def is_neutron():
 
     This logic exists as a separate config option
     """
-    legacy_class = CONF.network_api_class
-    use_neutron = CONF.use_neutron
-
-    if legacy_class not in (NEUTRON_NET_API, NOVA_NET_API):
-        # Someone actually used this option, this gets a pass for now,
-        # but will just go away once deleted.
-        return None
-    elif legacy_class == NEUTRON_NET_API and not use_neutron:
-        # If they specified neutron via class, we should respect that
-        LOG.warn(_LW("Config mismatch. The network_api_class specifies %s, "
-                     "however use_neutron is not set to True. Using Neutron "
-                     "networking for now, however please set use_neutron to "
-                     "True in your configuration as network_api_class is "
-                     "deprecated and will be removed."), legacy_class)
-        return True
-    elif use_neutron:
-        return True
-    else:
-        return False
+    return CONF.use_neutron
 
 
 def API():
-    if is_neutron() is None:
-        network_api_class = CONF.network_api_class
-    elif is_neutron():
+    if is_neutron():
         network_api_class = NEUTRON_NET_API
     else:
         network_api_class = NOVA_NET_API

nova/tests/unit/network/test_config.py

@@ -40,20 +40,6 @@ class NetworkAPIConfigTest(nova.test.NoDBTestCase):
         netapi = nova.network.API()
         self.assertIsInstance(netapi, nova.network.api.API)
 
-    def test_legacy_use_neutron(self):
-        """use neutron even if config is false because of legacy option."""
-        self.flags(use_neutron=False)
-        self.flags(network_api_class='nova.network.neutronv2.api.API')
-        netapi = nova.network.API()
-        self.assertIsInstance(netapi, nova.network.neutronv2.api.API)
-
-    def test_legacy_custom_class(self):
-        """use neutron even if config is false because of legacy option."""
-        self.flags(network_api_class=
-                   'nova.tests.unit.network.test_config.FileATicket')
-        netapi = nova.network.API()
-        self.assertIsInstance(netapi, FileATicket)
-
 
 class SecurityGroupAPIConfigTest(nova.test.NoDBTestCase):
 

nova/tests/unit/virt/hyperv/test_vmops.py

@@ -85,18 +85,6 @@ class VMOpsTestCase(test_base.HyperVBaseTestCase):
         mock_import_object.assert_called_once_with(
             vmops.NOVA_VIF_DRIVER)
 
-    @mock.patch('nova.network.is_neutron')
-    def test_load_vif_driver_unknown(self, is_neutron):
-        # TODO(sdague): delete once network_api_class is removed from
-        # config.
-        is_neutron.return_value = None
-        self.assertRaises(TypeError, self._vmops._load_vif_driver_class)
-
-    @mock.patch('nova.virt.hyperv.vmops.importutils.import_object')
-    def test_load_vif_driver_class_error(self, mock_import_object):
-        mock_import_object.side_effect = KeyError
-        self.assertRaises(TypeError, self._vmops._load_vif_driver_class)
-
     def test_list_instances(self):
         mock_instance = mock.MagicMock()
         self._vmops._vmutils.list_instances.return_value = [mock_instance]

nova/utils.py

@@ -1093,10 +1093,7 @@ def is_neutron():
     if _IS_NEUTRON is not None:
         return _IS_NEUTRON
 
-    # TODO(sdague): As long as network_api_class is importable
-    # is_neutron can return None to mean we have no idea what their
-    # class is.
-    _IS_NEUTRON = (nova.network.is_neutron() is True)
+    _IS_NEUTRON = nova.network.is_neutron()
     return _IS_NEUTRON
 
 

nova/virt/hyperv/vmops.py

@@ -85,10 +85,7 @@ NOVA_VIF_DRIVER = 'nova.virt.hyperv.vif.HyperVNovaNetworkVIFDriver'
 
 def get_network_driver():
     """"Return the correct network module"""
-    if nova.network.is_neutron() is None:
-        # this is an unknown network type, not neutron or nova
-        raise KeyError()
-    elif nova.network.is_neutron():
+    if nova.network.is_neutron():
         return NEUTRON_VIF_DRIVER
     else:
         return NOVA_VIF_DRIVER
@@ -115,13 +112,8 @@ class VMOps(object):
         self._load_vif_driver_class()
 
     def _load_vif_driver_class(self):
-        try:
-            class_name = get_network_driver()
-            self._vif_driver = importutils.import_object(class_name)
-        except KeyError:
-            raise TypeError(_("VIF driver not found for "
-                              "network_api_class: %s") %
-                            CONF.network_api_class)
+        class_name = get_network_driver()
+        self._vif_driver = importutils.import_object(class_name)
 
     def list_instance_uuids(self):
         instance_uuids = []

releasenotes/notes/network-api-class-removed-a4a754ca24c02bde.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - The network_api_class option was deprecated in Mitaka and is removed
+    in Newton. The use_neutron option replaces this functionality.