Pass config to node renderer

tools/render

@@ -35,12 +35,12 @@ TEMPLATES = Environment(
 )
 
 
-def render_templates(node: dict):
+def render_templates(node: dict, args: dict):
     class Inner(json.JSONEncoder):
         def default(self, o):
             if isinstance(o, Template):
                 try:
-                    rendered = o.render(node)
+                    rendered = o.render(args | node)
                 except Exception as e:
                     e.add_note(f"While rendering for: {node['hostname']}")
                     raise e
@@ -131,6 +131,11 @@ def walk_files(root: pathlib.Path):
 
 
 def main():
+    with open(ROOT.joinpath("config.yaml")) as fyaml:
+        config = yaml.safe_load(fyaml)
+
+    template_args = {"config": config, "root": ROOT}
+
     nodes = []
     for fullname in walk_files(NODES):
         filename = str(fullname.relative_to(NODES).parent) + "/" + fullname.stem
@@ -145,7 +150,10 @@ def main():
     # Quick and dirty way to resolve all the templates using a custom encoder
     nodes = list(
         map(
-            lambda node: json.loads(json.dumps(node, cls=render_templates(node))), nodes
+            lambda node: json.loads(
+                json.dumps(node, cls=render_templates(node, template_args))
+            ),
+            nodes,
         )
     )
 
@@ -155,16 +163,13 @@ def main():
         dict(s) for s in set(frozenset(node["cluster"].items()) for node in nodes)
     ]
 
-    with open(ROOT.joinpath("config.yaml")) as fyaml:
-        config = yaml.safe_load(fyaml)
+    template_args |= {"nodes": nodes, "clusters": clusters}
 
     RENDERED.mkdir(exist_ok=True)
     for template_name in TEMPLATES.list_templates():
         template = TEMPLATES.get_template(template_name)
 
-        rendered = template.render(
-            nodes=nodes, clusters=clusters, config=config, root=ROOT
-        )
+        rendered = template.render(template_args)
         with open(RENDERED.joinpath(template_name), "w") as f:
             f.write(rendered)