xml: T2588: code to extract defaults values from xml

1 files changed, 39 insertions, 0 deletions

diff --git a/python/vyos/xml/__init__.py b/python/vyos/xml/__init__.py
new file mode 100644
index 000000000..52f5bfb38
--- /dev/null
+++ b/python/vyos/xml/__init__.py
@@ -0,0 +1,39 @@
+# Copyright (C) 2020 VyOS maintainers and contributors
+#
+# This library is free software; you can redistribute it and/or modify it under the terms of
+# the GNU Lesser General Public License as published by the Free Software Foundation;
+# either version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along with this library;
+# if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
+
+
+from vyos.xml import definition
+from vyos.xml import load
+from vyos.xml import kw
+
+
+def load_configuration(cache=[]):
+    if cache:
+        return cache[0]
+
+    xml = definition.XML()
+
+    try:
+        from vyos.xml.cache import configuration
+        xml.update(configuration.definition)
+        cache.append(xml)
+    except Exception:
+        xml = definition.XML()
+        print('no xml configuration cache')
+        xml.update(load.xml(load.configuration_definition))
+
+    return xml
+
+
+def defaults(lpath):
+    return load_configuration().defaults(lpath)