dashboard: don't fail if datastore is missing

circle/dashboard/views/storage.py

@@ -16,14 +16,16 @@
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 from __future__ import unicode_literals, absolute_import
 from __future__ import unicode_literals, absolute_import
 
 
-from django.db.models import Q
-from django.views.generic import UpdateView
+from django.contrib import messages
 from django.core.urlresolvers import reverse
 from django.core.urlresolvers import reverse
+from django.db.models import Q
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ugettext_lazy as _
+from django.views.generic import UpdateView
 
 
-from sizefield.utils import filesizeformat
 from braces.views import SuperuserRequiredMixin
 from braces.views import SuperuserRequiredMixin
+from sizefield.utils import filesizeformat
 
 
+from common.models import WorkerNotFound
 from storage.models import DataStore, Disk
 from storage.models import DataStore, Disk
 from ..tables import DiskListTable
 from ..tables import DiskListTable
 from ..forms import DataStoreForm, DiskForm
 from ..forms import DataStoreForm, DiskForm
@@ -41,9 +43,13 @@ class StorageDetail(SuperuserRequiredMixin, UpdateView):
         context = super(StorageDetail, self).get_context_data(**kwargs)
         context = super(StorageDetail, self).get_context_data(**kwargs)
 
 
         ds = self.get_object()
         ds = self.get_object()
-        context['stats'] = self._get_stats()
-        context['missing_disks'] = ds.get_missing_disks()
-        context['orphan_disks'] = ds.get_orphan_disks()
+        try:
+            context['stats'] = self._get_stats()
+            context['missing_disks'] = ds.get_missing_disks()
+            context['orphan_disks'] = ds.get_orphan_disks()
+        except WorkerNotFound:
+            messages.error(self.request, _("The DataStore is offline."))
+
         context['disk_table'] = DiskListTable(
         context['disk_table'] = DiskListTable(
             self.get_table_data(), request=self.request,
             self.get_table_data(), request=self.request,
             template="django_tables2/with_pagination.html")
             template="django_tables2/with_pagination.html")