Improved how schematics are loaded

nodes/_defaults.yaml

@@ -1,4 +1,4 @@
-schematicID: !schematic "_schematic.yaml"
+schematicID: !schematic default
 arch: amd64
 talosVersion: v1.11.3
 kernelArgs:
@@ -19,3 +19,5 @@ dns:
     - 8.8.8.8
 ntp: nl.pool.ntp.org
 install: false
+patch: !patch
+    - hostname

tools/merge

@@ -2,7 +2,6 @@
 
 # Adapted from: https://enix.io/en/blog/pxe-talos/
 
-import argparse
 import functools
 import json
 import pathlib
@@ -10,6 +9,9 @@ import pathlib
 import requests
 import yaml
 
+NODES = pathlib.Path("nodes")
+SCHEMATICS = pathlib.Path("schematics")
+
 
 @functools.cache
 def get_schematic_id(schematic: str):
@@ -20,24 +22,20 @@ def get_schematic_id(schematic: str):
     return data["id"]
 
 
-def schematic_constructor(directory: pathlib.Path):
+def schematic_constructor(loader: yaml.SafeLoader, node: yaml.nodes.ScalarNode):
     """Load specified schematic file and get the assocatied schematic id"""
-
-    def constructor(loader: yaml.SafeLoader, node: yaml.nodes.ScalarNode):
-        filename = str(loader.construct_scalar(node))
-        try:
-            schematic = directory.joinpath(filename).read_text()
-            return get_schematic_id(schematic)
-        except Exception:
-            raise yaml.MarkedYAMLError("Failed to load schematic", node.start_mark)
-
-    return constructor
+    filename = loader.construct_scalar(node)
+    try:
+        schematic = SCHEMATICS.joinpath(filename).with_suffix(".yaml").read_text()
+        return get_schematic_id(schematic)
+    except Exception:
+        raise yaml.MarkedYAMLError("Failed to load schematic", node.start_mark)
 
 
-def get_loader(directory: pathlib.Path):
+def get_loader():
     """Add special constructors to yaml loader"""
     loader = yaml.SafeLoader
-    loader.add_constructor("!schematic", schematic_constructor(directory))
+    loader.add_constructor("!schematic", schematic_constructor)
 
     return loader
 
@@ -47,7 +45,7 @@ def get_defaults(directory: pathlib.Path, root: pathlib.Path):
     """Compute the defaults from the provided directory and parents."""
     try:
         with open(directory.joinpath("_defaults.yaml")) as fyaml:
-            yml_data = yaml.load(fyaml, Loader=get_loader(directory))
+            yml_data = yaml.load(fyaml, Loader=get_loader())
     except OSError:
         yml_data = {}
 
@@ -67,23 +65,13 @@ def walk_files(root: pathlib.Path):
 
 
 def main():
-    parser = argparse.ArgumentParser()
-    parser.add_argument("directory", type=pathlib.Path)
-    parser.add_argument("-f", "--filter")
-    args = parser.parse_args()
-
     data = []
-    for fullname in walk_files(args.directory):
-        filename = (
-            str(fullname.relative_to(args.directory).parent) + "/" + fullname.stem
-        )
-
-        if args.filter is not None and not filename.startswith(args.filter):
-            continue
+    for fullname in walk_files(NODES):
+        filename = str(fullname.relative_to(NODES).parent) + "/" + fullname.stem
 
         with open(fullname) as fyaml:
-            yml_data = yaml.load(fyaml, Loader=get_loader(fullname.parent))
-        yml_data = get_defaults(fullname.parent, args.directory) | yml_data
+            yml_data = yaml.load(fyaml, Loader=get_loader())
+        yml_data = get_defaults(fullname.parent, NODES) | yml_data
         yml_data["hostname"] = fullname.stem
         yml_data["filename"] = filename
         data.append(yml_data)