iteritems -> items, handle none match

_modules/nodemeta.py

@@ -57,6 +57,9 @@ def _grains_from_name(cfg):
 
     hostname = _get_hostname(cfg)
     rematch = _regex.search(hostname)
+    if rematch is None:
+        log.warning(f"Could not parse grains from subject `{hostname}`")
+        return {}
 
     return {
         "app": rematch.group("app"),

base/grains.sls

@@ -2,7 +2,7 @@
 
 {% set current_node = salt["nodemeta.current_node"]() or {} %}
 
-{% for key, value in current_node.iteritems() %}
+{% for key, value in current_node.items() %}
 {{ key|yaml_dquote }}:
   grains.present:
   - value: {{ value|yaml_dquote }}