Don't time out when listing unracked nodes

When we don't have Nova baremetal running, the app will die trying to list the
unracked nodes.

Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>

1 files changed, 5 insertions, 2 deletions

diff --git a/tuskar_ui/api.py b/tuskar_ui/api.py
index e1b182bb..3546565c 100644
--- a/tuskar_ui/api.py
+++ b/tuskar_ui/api.py
@@ -23,6 +23,7 @@ from django.conf import settings
 from django.db.models import Max
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
+from requests import ConnectionError
 
 from novaclient.v1_1.contrib import baremetal
 from tuskarclient.v1 import client as tuskar_client
@@ -207,8 +208,10 @@ class Node(StringIdAPIResourceWrapper):
 
     @classmethod
     def list_unracked(cls, request):
-        return [n for n in Node.list(request) if (
-                n.rack is None)]
+        try:
+            return [n for n in Node.list(request) if (n.rack is None)]
+        except ConnectionError:
+            return []
 
     @classmethod
     def create(cls, request, name, cpus, memory_mb, local_gb, prov_mac_address,