xml: T5435: utility function for default value at path

2 files changed, 13 insertions, 0 deletions

diff --git a/python/vyos/xml_ref/__init__.py b/python/vyos/xml_ref/__init__.py
index ad2130dca..9f7a31e2c 100644
--- a/python/vyos/xml_ref/__init__.py
+++ b/python/vyos/xml_ref/__init__.py
@@ -13,6 +13,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
+from typing import Optional, Union
 from vyos.xml_ref import definition
 
 def load_reference(cache=[]):
@@ -54,6 +55,9 @@ def from_source(d: dict, path: list) -> bool:
 def component_version() -> dict:
     return load_reference().component_version()
 
+def default_value(path: list) -> Optional[Union[str, list]]:
+    return load_reference().default_value(path)
+
 def multi_to_list(rpath: list, conf: dict) -> dict:
     return load_reference().multi_to_list(rpath, conf)
 
diff --git a/python/vyos/xml_ref/definition.py b/python/vyos/xml_ref/definition.py
index d95d580e2..b0b8a2605 100644
--- a/python/vyos/xml_ref/definition.py
+++ b/python/vyos/xml_ref/definition.py
@@ -153,6 +153,15 @@ class Xml:
             return default.split()
         return default
 
+    def default_value(self, path: list) -> Optional[Union[str, list]]:
+        d = self._get_ref_path(path)
+        default = self._get_default_value(d)
+        if default is None:
+            return None
+        if self._is_multi_node(d) or self._is_tag_node(d):
+            return default.split()
+        return default
+
     def get_defaults(self, path: list, get_first_key=False, recursive=False) -> dict:
         """Return dict containing default values below path