xmlbuilder: Separate out the property cache

Add a few more mappings to simplify certain lookups, and add
some more validation to prevent programming errors

1 files changed, 9 insertions, 7 deletions

diff --git a/virtinst/storage.py b/virtinst/storage.py
index d39a5939..656ab9e7 100644
--- a/virtinst/storage.py
+++ b/virtinst/storage.py
@@ -70,6 +70,15 @@ def _get_default_pool_path(conn):
     return path
 
 
+class _EnumerateSource(XMLBuilder):
+    XML_NAME = "source"
+
+
+class _EnumerateSources(XMLBuilder):
+    XML_NAME = "sources"
+    sources = XMLChildProperty(_EnumerateSource)
+
+
 class _Host(XMLBuilder):
     _XML_PROP_ORDER = ["name", "port"]
     XML_NAME = "host"
@@ -151,13 +160,6 @@ class StoragePool(_StorageObject):
                 return []
             raise
 
-        class _EnumerateSource(XMLBuilder):
-            XML_NAME = "source"
-        class _EnumerateSources(XMLBuilder):
-            XML_NAME = "sources"
-            sources = XMLChildProperty(_EnumerateSource)
-
-
         ret = []
         sources = _EnumerateSources(conn, xml)
         for source in sources.sources: