Merge lp:~james-page/charms/precise/ceph/fix-notify-clients into lp:~charmers/charms/precise/ceph/trunk

[James Page]

This fixes up a hook error I noticed when a client relation is in place but none of the clients have actually appears on the relation.

[Robert Ayres (robert-ayres)]

review: Approve

=== modified file 'hooks/hooks.py'
--- hooks/hooks.py	2013-03-12 16:30:06 +0000
+++ hooks/hooks.py	2013-05-01 15:04:25 +0000
@@ -255,10 +255,12 @@
     utils.juju_log('INFO', 'Begin notify_client.')
 
     for relid in utils.relation_ids('client'):
-        service_name = utils.relation_list(relid)[0].split('/')[0]
-        utils.relation_set(key=ceph.get_named_key(service_name),
-                           auth=utils.config_get('auth-supported'),
-                           rid=relid)
+        units = utils.relation_list(relid)
+        if len(units) > 0:
+            service_name = units[0].split('/')[0]
+            utils.relation_set(key=ceph.get_named_key(service_name),
+                               auth=utils.config_get('auth-supported'),
+                               rid=relid)
 
     utils.juju_log('INFO', 'End notify_client.')