Keystone::Region observe reality implementation

Add override parse_live_resource_data method implementation for
OS::Keystone::Region resource.

Also, translation rule resolve has been added for parent_region
property.

implements bp get-reality-for-resources

Change-Id: I5f480cdacffb639e1d176ea5c8e9e13dbe24ff83

heat/engine/resources/openstack/keystone/region.py

@@ -18,6 +18,7 @@ from heat.engine import constraints
 from heat.engine import properties
 from heat.engine import resource
 from heat.engine import support
+from heat.engine import translation
 
 
 class KeystoneRegion(resource.Resource):
@@ -68,6 +69,17 @@ class KeystoneRegion(resource.Resource):
         )
     }
 
+    def translation_rules(self, properties):
+        return [
+            translation.TranslationRule(
+                properties,
+                translation.TranslationRule.RESOLVE,
+                [self.PARENT_REGION],
+                client_plugin=self.client_plugin(),
+                finder='get_region_id'
+            )
+        ]
+
     def client(self):
         return super(KeystoneRegion, self).client().client
 
@@ -98,6 +110,13 @@ class KeystoneRegion(resource.Resource):
                 enabled=enabled
             )
 
+    def parse_live_resource_data(self, resource_properties, resource_data):
+        return {
+            self.DESCRIPTION: resource_data.get(self.DESCRIPTION),
+            self.ENABLED: resource_data.get(self.ENABLED),
+            self.PARENT_REGION: resource_data.get('parent_region_id')
+        }
+
 
 def resource_mapping():
     return {

heat/tests/openstack/keystone/test_region.py

@@ -145,3 +145,23 @@ class KeystoneRegionTest(common.HeatTestCase):
             enabled=prop_diff[region.KeystoneRegion.ENABLED],
             parent_region='test_parent_region'
         )
+
+    def test_region_get_live_state(self):
+        self.test_region.resource_id = '477e8273-60a7-4c41-b683-fdb0bc7cd151'
+        mock_dict = mock.MagicMock()
+        mock_dict.to_dict.return_value = {
+            "parent_region_id": None,
+            "enabled": True,
+            "id": "79e4d02f8b454a7885c413d5d4297813",
+            "links": {"self": "link"},
+            "description": ""
+        }
+        self.regions.get.return_value = mock_dict
+
+        reality = self.test_region.get_live_state(self.test_region.properties)
+        expected = {
+            "parent_region": None,
+            "enabled": True,
+            "description": ""
+        }
+        self.assertEqual(expected, reality)