flat_leaves switch on flatten; checking resource equality using flat resource model

orchestrator/model/resources.py

@@ -64,11 +64,7 @@ class Resource(object):
 
     def __eq__(self, other):
         try:
-            for attr, other_value in other.items():
-                value = self._attributes.get(attr)
-                if value is None or value != other_value:
-                    return False
-            return True
+            return self.flatten(flat_leaves=True) == other.flatten(flat_leaves=True)
         except AttributeError:
             return False
 
@@ -93,9 +89,11 @@ class Resource(object):
     def __add__(self, other):
         return ResourceGroup(resources=[self, other])
 
-    def flatten(self, fqn=None):
+    def flatten(self, fqn=None, flat_leaves=True):
         fqn = '%s.%s' % (fqn, self.id) if fqn else self.id
+        if flat_leaves:
             return {'%s.%s' % (fqn, key): str(value) for key, value in self.items()}
+        return {fqn: self}
 
     @staticmethod
     def json_encoder(data):
@@ -116,6 +114,12 @@ class ResourceGroup(Resource):
                 self.add(resource)
         self._attributes['resources'] = self.resources
 
+    def __eq__(self, other):
+        try:
+            return self.id == other.id and super(ResourceGroup, self).__eq__(other)
+        except AttributeError:
+            return False
+
     def add(self, resource):
         if not isinstance(resource, Resource):
             try:
@@ -143,10 +147,10 @@ class ResourceGroup(Resource):
         diff_keys = set(flat_self.keys()).symmetric_difference(flat_other.keys())
         return {key: flat_self.get(key, flat_other.get(key)) for key in diff_keys}
 
-    def flatten(self, fqn=None):
+    def flatten(self, fqn=None, flat_leaves=True):
         flat = dict()
         for resource in self.resources:
-            flat.update(resource.flatten('%s.%s' % (fqn, self.id) if fqn else self.id))
+            flat.update(resource.flatten('%s.%s' % (fqn, self.id) if fqn else self.id, flat_leaves))
         return flat
 
 

tests/test_model.py

@@ -276,9 +276,7 @@ class ResourceGroupTest(TestCase):
         self.assertNotEqual(ResourceGroup(id='some_group', resources=[resource1]),
                             ResourceGroup(id='some_group', resources=[resource2]))
 
-    def test_resource_group_flatten(self):
-        # given
-        tree_dict = {
+    TEST_TREE_DICT = {
         'id': 'root',
         'type': 'group',
         'resources': [
@@ -302,6 +300,9 @@ class ResourceGroupTest(TestCase):
             }
         ]
     }
+
+    def test_resource_group_flatten_flat_leaves(self):
+        # given
         expected_flat_dict = {
             'root.instance-1.id': 'instance-1',
             'root.instance-1.type': 'instance',
@@ -312,41 +313,32 @@ class ResourceGroupTest(TestCase):
         }
 
         # when
-        tree_resource = Resource(tree_dict)
+        tree_resource = Resource(self.TEST_TREE_DICT)
         flat_dict = tree_resource.flatten()
 
         # then
         self.assertEqual(expected_flat_dict, flat_dict)
 
-    def test_resource_group_diff(self):
+    def test_resource_group_flatten_not_flat_leaves(self):
         # given
-        tree_dict1 = {
-            'id': 'root',
-            'type': 'group',
-            'resources': [
-                {
-                    'id': 'instance-1',
-                    'type': 'instance'
-                },
-                {
-                    'id': 'level-1',
-                    'type': 'group',
-                    'resources': [
-                        {
-                            'id': 'instance-2',
-                            'type': 'instance'
-                        },
-                        {
-                            'id': 'instance-3',
-                            'type': 'instance'
-                        }
-                    ]
-                }
-            ]
+        expected_flat_dict = {
+            'root.instance-1': Instance(id='instance-1'),
+            'root.level-1.instance-2': Instance(id='instance-2'),
+            'root.level-1.instance-3': Instance(id='instance-3')
         }
-        group1 = ResourceGroup(tree_dict1)
 
-        tree_dict2 = copy.deepcopy(tree_dict1)
+        # when
+        tree_resource = Resource(self.TEST_TREE_DICT)
+        flat_dict = tree_resource.flatten(flat_leaves=False)
+
+        # then
+        self.assertEqual(expected_flat_dict, flat_dict)
+
+    def test_resource_group_diff(self):
+        # given
+        group1 = ResourceGroup(self.TEST_TREE_DICT)
+
+        tree_dict2 = copy.deepcopy(self.TEST_TREE_DICT)
         del tree_dict2['resources'][0]
         group2 = ResourceGroup(tree_dict2)