cluster: add get_cluster_group_or_none

This should have been included in commit fddbe7f Returns only the cluster's EC2 security group if it exists, None if not.
jtriley · Dec 13, 2012 · ced52d9 · ced52d9
1 parent e766fc5
commit ced52d9
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/starcluster/cluster.py b/starcluster/cluster.py
@@ -208,6 +208,12 @@ def get_cluster_security_group(self, group_name):
         gname = self._get_cluster_name(group_name)
         return self.ec2.get_security_group(gname)
 
+    def get_cluster_group_or_none(self, group_name):
+        try:
+            return self.get_cluster_security_group(group_name)
+        except exception.SecurityGroupDoesNotExist:
+            pass
+
     def get_cluster_security_groups(self):
         """
         Return all security groups on EC2 that start with '@sc-'