Fix instance delete notifications.

Remove extra exists event horking uptime calculations.
Fix broken deleted_at time in notifications (was blank due to being
pulled from the wrong field on the instance)

Change-Id: I8ca05593031f03c284c17df9d6fca64b22b16baf

3 files changed, 18 insertions, 14 deletions

diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index 0fe261948..f0acf3b4e 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -694,12 +694,11 @@ class ComputeManager(manager.SchedulerDependentManager):
         self._notify_about_instance_usage(context, instance, "delete.start")
         self._shutdown_instance(context, instance, 'Terminating')
         self._cleanup_volumes(context, instance_id)
-        self._instance_update(context,
+        instance = self._instance_update(context,
                               instance_id,
                               vm_state=vm_states.DELETED,
                               task_state=None,
                               terminated_at=utils.utcnow())
-
         self.db.instance_destroy(context, instance_id)
         self._notify_about_instance_usage(context, instance, "delete.end")
 
@@ -712,8 +711,6 @@ class ComputeManager(manager.SchedulerDependentManager):
         def do_terminate_instance():
             elevated = context.elevated()
             instance = self.db.instance_get_by_uuid(elevated, instance_uuid)
-            compute_utils.notify_usage_exists(
-                    context, instance, current_period=True)
             try:
                 self._delete_instance(context, instance)
             except exception.InstanceTerminationFailure as error:
diff --git a/nova/compute/utils.py b/nova/compute/utils.py
index df4a9d221..78a6e574c 100644
--- a/nova/compute/utils.py
+++ b/nova/compute/utils.py
@@ -208,7 +208,10 @@ def _usage_from_instance(context, instance_ref, network_info=None, **kw):
           disk_gb=instance_ref['root_gb'] + instance_ref['ephemeral_gb'],
           display_name=instance_ref['display_name'],
           created_at=str(instance_ref['created_at']),
-          deleted_at=null_safe_str(instance_ref['deleted_at']),
+          # Nova's deleted vs terminated instance terminology is confusing,
+          # this should be when the instance was deleted (i.e. terminated_at),
+          # not when the db record was deleted. (mdragon)
+          deleted_at=null_safe_str(instance_ref['terminated_at']),
           launched_at=null_safe_str(instance_ref['launched_at']),
           image_ref_url=image_ref_url,
           state=instance_ref['vm_state'],
diff --git a/nova/tests/test_compute.py b/nova/tests/test_compute.py
index adb50806d..bb61d372f 100644
--- a/nova/tests/test_compute.py
+++ b/nova/tests/test_compute.py
@@ -871,27 +871,29 @@ class ComputeTestCase(BaseTestCase):
 
     def test_terminate_usage_notification(self):
         """Ensure terminate_instance generates apropriate usage notification"""
+        old_time = datetime.datetime(2012, 4, 1)
+        cur_time = datetime.datetime(2012, 12, 21, 12, 21)
+        utils.set_time_override(old_time)
+
         inst_ref = self._create_fake_instance()
         self.compute.run_instance(self.context, inst_ref['uuid'])
         test_notifier.NOTIFICATIONS = []
+        utils.set_time_override(cur_time)
         self.compute.terminate_instance(self.context, inst_ref['uuid'])
 
-        self.assertEquals(len(test_notifier.NOTIFICATIONS), 5)
-        msg = test_notifier.NOTIFICATIONS[0]
-        self.assertEquals(msg['priority'], 'INFO')
-        self.assertEquals(msg['event_type'], 'compute.instance.exists')
+        self.assertEquals(len(test_notifier.NOTIFICATIONS), 4)
 
-        msg = test_notifier.NOTIFICATIONS[1]
+        msg = test_notifier.NOTIFICATIONS[0]
         self.assertEquals(msg['priority'], 'INFO')
         self.assertEquals(msg['event_type'], 'compute.instance.delete.start')
-        msg1 = test_notifier.NOTIFICATIONS[2]
+        msg1 = test_notifier.NOTIFICATIONS[1]
         self.assertEquals(msg1['event_type'],
                                             'compute.instance.shutdown.start')
-        msg1 = test_notifier.NOTIFICATIONS[3]
+        msg1 = test_notifier.NOTIFICATIONS[2]
         self.assertEquals(msg1['event_type'], 'compute.instance.shutdown.end')
-        msg1 = test_notifier.NOTIFICATIONS[4]
+        msg1 = test_notifier.NOTIFICATIONS[3]
         self.assertEquals(msg1['event_type'], 'compute.instance.delete.end')
-        payload = msg['payload']
+        payload = msg1['payload']
         self.assertEquals(payload['tenant_id'], self.project_id)
         self.assertEquals(payload['user_id'], self.user_id)
         self.assertEquals(payload['instance_id'], inst_ref.uuid)
@@ -901,6 +903,8 @@ class ComputeTestCase(BaseTestCase):
         self.assertTrue('display_name' in payload)
         self.assertTrue('created_at' in payload)
         self.assertTrue('launched_at' in payload)
+        self.assertTrue('deleted_at' in payload)
+        self.assertEqual(payload['deleted_at'], str(cur_time))
         image_ref_url = "%s/images/1" % utils.generate_glance_url()
         self.assertEquals(payload['image_ref_url'], image_ref_url)