Merge "nova-status: return 255 for unexpected errors"

doc/source/man/nova-status.rst

@@ -61,6 +61,7 @@ Upgrade
   service catalog.
 
   **Return Codes**
+    ::
 
     0) All upgrade readiness checks passed successfully and there is nothing
        to do.
@@ -69,6 +70,7 @@ Upgrade
     2) There was an upgrade status check failure that needs to be
        investigated. This should be considered something that stops an
        upgrade.
+    255) An unexpected error occurred.
 
   **History of Checks**
 

nova/cmd/status.py

@@ -317,5 +317,5 @@ def main():
         return(ret)
     except Exception:
         print(_('Error:\n%s') % traceback.format_exc())
-        # This is 10 so it's not confused with the upgrade check exit codes.
-        return 10
+        # This is 255 so it's not confused with the upgrade check exit codes.
+        return 255

nova/tests/unit/cmd/test_status.py

@@ -83,7 +83,7 @@ class TestNovaStatusMain(test.NoDBTestCase):
         mock_fn = mock.Mock(side_effect=Exception('wut'))
         mock_get_action_fn.return_value = (mock_fn, [], {})
 
-        self._check_main(expected_return_value=10)
+        self._check_main(expected_return_value=255)
         output = self.output.getvalue()
         self.assertIn('Error:', output)
         # assert the traceback is in the output