1 files changed, 25 insertions, 0 deletions
diff --git a/charms/trusty/ceilometer-contrail/hooks/ceilometer_contrail_utils.py b/charms/trusty/ceilometer-contrail/hooks/ceilometer_contrail_utils.py
new file mode 100644
index 0000000..6bab06e
--- /dev/null
+++ b/charms/trusty/ceilometer-contrail/hooks/ceilometer_contrail_utils.py
@@ -0,0 +1,25 @@
+from collections import OrderedDict
+
+import yaml
+
+from charmhelpers.core.hookenv import (
+    related_units,
+    relation_get,
+    relation_ids
+)
+
+def ordereddict_representer(dumper, data):
+    return dumper.represent_mapping("tag:yaml.org,2002:map", data.items())
+
+yaml.add_representer(OrderedDict, ordereddict_representer)
+
+def contrail_analytics_api_units():
+    """Return a list of contrail analytics api units"""
+    return [ unit for rid in relation_ids("contrail-analytics-api")
+                  for unit in related_units(rid)
+                  if relation_get("port", unit, rid) ]
+
+def units(relation):
+    """Return a list of units for the specified relation"""
+    return [ unit for rid in relation_ids(relation)
+                  for unit in related_units(rid) ]