Add subordinate_units to ModelState (and model.Model)

Author: cderici

juju/model.py

@@ -171,6 +171,11 @@ def units(self):
         """
         return self._live_entity_map('unit')
 
+    @property
+    def subordinate_units(self):
+        """Return a map of unit-id:Unit for all subordinate units"""
+        return {u_name: u for u_name, u in self.units.items() if u.is_subordinate}
+
     @property
     def relations(self):
         """Return a map of relation-id:Relation for all relations currently in
@@ -969,6 +974,14 @@ def units(self):
         """
         return self.state.units
 
+    @property
+    def subordinate_units(self):
+        """Return a map of unit-id:Unit for all subordiante units currently in
+        the model.
+
+        """
+        return self.state.subordinate_units
+
     @property
     def relations(self):
         """Return a list of all Relations currently in the model.