Revert commits to use UID instead of SelfLink

Revert "Remove object_uid"
This reverts commit 17588f803f.
Revert "Improve pipeline/Async logging"
This reverts commit 1fce343136.

Closes-Bug: 1748836
Change-Id: Ib638b2a6e7be3dee2d7a7aa8fd4db0e45e7663b1
(cherry picked from commit 60213747a3)

kuryr_kubernetes/controller/handlers/pipeline.py

@@ -59,4 +59,4 @@ class ControllerPipeline(h_dis.EventPipeline):
 
     def _wrap_dispatcher(self, dispatcher):
         return h_log.LogExceptions(h_async.Async(dispatcher, self._tg,
-                                                 h_k8s.object_link))
+                                                 h_k8s.object_uid))

kuryr_kubernetes/handlers/asynchronous.py

@@ -99,7 +99,7 @@ class Async(base.EventHandler):
             self._handler(event)
 
     def _done(self, thread, group):
-        LOG.debug("Asynchronous handler stopped processing %s", group)
+        LOG.debug("Asynchronous handler stopped processing group %s", group)
         queue = self._queues.pop(group)
 
         if not queue.empty():

kuryr_kubernetes/handlers/k8s_base.py

@@ -24,9 +24,9 @@ def object_kind(event):
         return None
 
 
-def object_link(event):
+def object_uid(event):
     try:
-        return event['object']['metadata']['selfLink']
+        return event['object']['metadata']['uid']
     except KeyError:
         return None
 

kuryr_kubernetes/tests/unit/controller/handlers/test_pipeline.py

@@ -57,4 +57,4 @@ class TestControllerPipeline(test_base.TestCase):
         self.assertEqual(logging_handler, ret)
         m_logging_type.assert_called_with(async_handler)
         m_async_type.assert_called_with(dispatcher, thread_group,
-                                        h_k8s.object_link)
+                                        h_k8s.object_uid)