Use physical name in event if resource_id is None

An event for CREATE_IN_PROGRESS will have a physical_resource_id value
of None because the resource hasn't been created yet.

Because of this it is not possible to relate a nested stack event with
the CREATE_IN_PROGRESS resource event in the parent stack.

This change populates Event.physical_resource_id with
Resource.physical_resource_name() if Resource.resource_id isn't
populated yet.

This change will help fix
Related-Bug: #1619415

Change-Id: Ib8feb7752bd5736785d142216312bb35629b3601

heat/engine/resource.py

@@ -1727,8 +1727,9 @@ class Resource(object):
 
     def _add_event(self, action, status, reason):
         """Add a state change event to the database."""
+        physical_res_id = self.resource_id or self.physical_resource_name()
         ev = event.Event(self.context, self.stack, action, status, reason,
-                         self.resource_id, self.properties,
+                         physical_res_id, self.properties,
                          self.name, self.type())
 
         ev.store()

heat/tests/test_resource.py

@@ -3393,6 +3393,7 @@ class ResourceHookTest(common.HeatTestCase):
                                                'GenericResourceType')
         res = resource.Resource('res', snippet, self.stack)
         res.id = '1234'
+        res.uuid = uuid.uuid4()
         task = scheduler.TaskRunner(res.create)
         task.start()
         task.step()
@@ -3409,6 +3410,7 @@ class ResourceHookTest(common.HeatTestCase):
         res = resource.Resource('res', snippet, self.stack)
         res.id = '1234'
         res.action = 'CREATE'
+        res.uuid = uuid.uuid4()
         self.stack.action = 'DELETE'
         task = scheduler.TaskRunner(res.delete)
         task.start()
@@ -3425,6 +3427,7 @@ class ResourceHookTest(common.HeatTestCase):
                                                'GenericResourceType')
         res = resource.Resource('res', snippet, self.stack)
         res.id = '1234'
+        res.uuid = uuid.uuid4()
         task = scheduler.TaskRunner(res.create)
         task.start()
         task.step()
@@ -3440,6 +3443,7 @@ class ResourceHookTest(common.HeatTestCase):
                                                'GenericResourceType')
         res = resource.Resource('res', snippet, self.stack)
         res.id = '1234'
+        res.uuid = uuid.uuid4()
         res.action = 'CREATE'
         self.stack.action = 'DELETE'
         task = scheduler.TaskRunner(res.delete)

heat/tests/test_stack_user.py

@@ -60,7 +60,7 @@ class StackUserTest(common.HeatTestCase):
 
         rsrc._store()
         self.m.StubOutWithMock(short_id, 'get_id')
-        short_id.get_id(rsrc.uuid).AndReturn('aabbcc')
+        short_id.get_id(rsrc.uuid).MultipleTimes().AndReturn('aabbcc')
 
         self.m.StubOutWithMock(fakes.FakeKeystoneClient,
                                'create_stack_domain_user')