Introduce mechanism to parametrize standards

Standards/scs-0003-v1-sovereign-cloud-standards-yaml.md

@@ -137,8 +137,13 @@ Every list of standards consists of several standards that – altogether – de
 | `name`                   | String | Full name of the particular standard                                                                   | _Flavor naming_                                                                                                                |
 | `url`                    | String | Valid URL to the latest raw version of the particular standard                                         | _[Flavor naming](https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Standards/scs-0100-v2-flavor-naming.md)_ |
 | `condition`              | String | State of the particular standard, currently either `mandatory` or `optional`, default is `mandatory`   | _mandatory_                                                                                                                    |
+| `parameters`             | Map    | Maps parameter names to parameter values                                                               |                                                                                                                                |
 | `checks`                 | Array  | List of all checks that must pass; each entry being a check descriptor                                 |                                                                                                                                |
 
+The parameters specified here will be added to the variable assignment for all check tools that belong to this standard, so they will be substituted in the same way.
+The advantage is that these parameters may show up in the automatically generated documentation, whereas the check tools themselves probably won't.
+See the "Standard images" standard in the larger basic example below for a possible use case.
+
 ### Check descriptor
 
 The following fields are valid for every check descriptor:
@@ -194,7 +199,7 @@ versions:
             id: flavor-name-check
             lifetime: day
       - name: Image metadata
-        url: https://raw.githubusercontent.com/SovereignCloudStack/Docs/main/Standards/SCS-0004-v1-image-metadata.md
+        url: https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Standards/scs-0102-v1-image-metadata.md
         condition: mandatory
         checks:
           - executable: image-md-check.py
@@ -205,6 +210,14 @@ versions:
             condition: optional
             id: image-md-check-2
             lifetime: day
+      - name: Standard images
+        url: https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Standards/scs-0104-v1-standard-images.md
+        parameters:
+          image_spec: https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Tests/iaas/scs-0104-v1-images.yaml
+        checks:
+          - executable: ./iaas/standard-images/images-openstack.py
+            args: -c {os_cloud} -d {image_spec}
+            id: standard-images-check
   - version: v4 # This is the upcoming version with a given target date. No further changes should be done to this set of standards
     stabilized_at: 2022-04-01
     standards:

Tests/iaas/standard-images/images-openstack.py

@@ -87,6 +87,15 @@ def main(argv):
         logger.critical("You need to have OS_CLOUD set or pass --os-cloud=CLOUD.")
         return 1
 
+    # we only support local files; but we allow specifying the following URLs for the sake of
+    # better documentation
+    prefix = next(p for p in (
+        'https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Tests/',
+        'https://github.com/SovereignCloudStack/standards/blob/main/Tests/',
+        '',  # sentinel (do not remove!)
+    ) if yaml_path.startswith(p))
+    if prefix:
+        yaml_path = yaml_path[len(prefix):]
     try:
         with open(yaml_path, "rb") as fileobj:
             image_data = yaml.safe_load(fileobj)

Tests/scs-compatible-iaas.yaml

@@ -37,9 +37,11 @@ versions:
             id: standard-flavors-check
       - name: Standard images
         url: https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Standards/scs-0104-v1-standard-images.md
+        parameters:
+          image_spec: https://raw.githubusercontent.com/SovereignCloudStack/standards/main/Tests/iaas/scs-0104-v1-images.yaml
         checks:
           - executable: ./iaas/standard-images/images-openstack.py
-            args: -c {os_cloud} -d ./iaas/scs-0104-v1-images.yaml
+            args: -c {os_cloud} -d {image_spec}
             id: standard-images-check
   - version: v3
     stabilized_at: 2023-06-15

Tests/scs-compliance-check.py

@@ -35,7 +35,7 @@
 KEYWORDS = {
     'spec': ('uuid', 'name', 'url', 'versions', 'prerequisite', 'variables'),
     'version': ('version', 'standards', 'stabilized_at', 'deprecated_at'),
-    'standard': ('checks', 'url', 'name', 'condition'),
+    'standard': ('checks', 'url', 'name', 'condition', 'parameters'),
     'check': ('executable', 'env', 'args', 'condition', 'lifetime', 'id', 'section'),
 }
 
@@ -309,8 +309,11 @@ def main(argv):
                 if config.sections and section not in config.sections:
                     print(f"skipping check '{id_}': not in selected sections")
                     continue
-                args = check.get('args', '').format(**config.assignment)
-                env = {key: value.format(**config.assignment) for key, value in check.get('env', {}).items()}
+                assignment = config.assignment
+                if "parameters" in standard:
+                    assignment = {**assignment, **standard['parameters']}
+                args = check.get('args', '').format(**assignment)
+                env = {key: value.format(**assignment) for key, value in check.get('env', {}).items()}
                 env_str = " ".join(f"{key}={value}" for key, value in env.items())
                 memo_key = f"{env_str} {check['executable']} {args}".strip()
                 invokation = memo.get(memo_key)