Fixes to allow OVO deserializion of ports/networks

A few fixes required to allow deserialization/serialization
of OVO resources.

* Set shared to False when context is missing for RBAC calculations
* Parse strings received from json into netaddr objects

Partially-Implements: blueprint push-notifications
Change-Id: I1609014d6100a0c410c66d159f9e682d8aa3e7ba

neutron/objects/common_types.py

@@ -24,6 +24,7 @@ import six
 
 from neutron._i18n import _
 from neutron.common import constants
+from neutron.common import utils
 from neutron.objects import exceptions as o_exc
 from neutron.plugins.common import constants as plugin_constants
 
@@ -205,6 +206,14 @@ class MACAddress(obj_fields.FieldType):
     def to_primitive(obj, attr, value):
         return str(value)
 
+    @staticmethod
+    def from_primitive(obj, attr, value):
+        try:
+            return utils.AuthenticEUI(value)
+        except Exception:
+            msg = _("Field value %s is not a netaddr.EUI") % value
+            raise ValueError(msg)
+
 
 class MACAddressField(obj_fields.AutoTypedField):
     AUTO_TYPE = MACAddress()
@@ -264,6 +273,14 @@ class IPNetwork(obj_fields.FieldType):
     def to_primitive(obj, attr, value):
         return str(value)
 
+    @staticmethod
+    def from_primitive(obj, attr, value):
+        try:
+            return utils.AuthenticIPNetwork(value)
+        except Exception:
+            msg = _("Field value %s is not a netaddr.IPNetwork") % value
+            raise ValueError(msg)
+
 
 class IPNetworkField(obj_fields.AutoTypedField):
     AUTO_TYPE = IPNetwork()

neutron/objects/rbac_db.py

@@ -254,9 +254,14 @@ def _create_hook(self, orig_create):
 
 def _to_dict_hook(self, to_dict_orig):
     dct = to_dict_orig(self)
-    dct['shared'] = self.is_shared_with_tenant(self.obj_context,
-                                               self.id,
-                                               self.obj_context.tenant_id)
+    if self.obj_context:
+        dct['shared'] = self.is_shared_with_tenant(self.obj_context,
+                                                   self.id,
+                                                   self.obj_context.tenant_id)
+    else:
+        # most OVO objects on an agent will not have a context set on the
+        # object because they will be generated from obj_from_primitive.
+        dct['shared'] = False
     return dct
 
 

neutron/tests/unit/objects/test_common_types.py

@@ -52,8 +52,11 @@ class TestField(object):
             _context = 'context'
 
         for prim_val, out_val in self.from_primitive_values:
-            self.assertEqual(out_val, self.field.from_primitive(
-                ObjectLikeThing, 'attr', prim_val))
+            from_prim = self.field.from_primitive(ObjectLikeThing, 'attr',
+                                                  prim_val)
+            self.assertEqual(out_val, from_prim)
+            # ensure it's coercable for sanity
+            self.field.coerce('obj', 'attr', from_prim)
 
     @abc.abstractmethod
     def test_stringify(self):
@@ -117,8 +120,10 @@ class MACAddressFieldTest(test_base.BaseTestCase, TestField):
             # if they represent a valid MAC address
             tools.get_random_mac(),
         ]
-        self.to_primitive_values = self.coerce_good_values
-        self.from_primitive_values = self.coerce_good_values
+        self.to_primitive_values = ((a1, str(a2))
+                                    for a1, a2 in self.coerce_good_values)
+        self.from_primitive_values = ((a2, a1)
+                                      for a1, a2 in self.to_primitive_values)
 
     def test_stringify(self):
         for in_val, out_val in self.coerce_good_values:
@@ -142,7 +147,8 @@ class IPNetworkFieldTest(test_base.BaseTestCase, TestField):
         ]
         self.to_primitive_values = ((a1, str(a2))
                                     for a1, a2 in self.coerce_good_values)
-        self.from_primitive_values = self.coerce_good_values
+        self.from_primitive_values = ((a2, a1)
+                                      for a1, a2 in self.to_primitive_values)
 
     def test_stringify(self):
         for in_val, out_val in self.coerce_good_values:

neutron/tests/unit/objects/test_rbac_db.py

@@ -281,6 +281,10 @@ class RbacNeutronDbObjectTestCase(test_base.BaseObjectIfaceTestCase,
         attach_rbac_mock.assert_called_with(
             obj_id, test_neutron_obj.obj_context.tenant_id)
 
+    def test_shared_field_false_without_context(self):
+        test_neutron_obj = self._test_class()
+        self.assertFalse(test_neutron_obj.to_dict()['shared'])
+
     @mock.patch.object(_test_class, 'attach_rbac')
     @mock.patch.object(obj_db_api, 'get_object',
                        return_value=['fake_rbac_policy'])