Tool to generate input for osism's flavor manager from this standard'…

…s yaml file

Signed-off-by: Matthias Büchse <[email protected]>

Tests/iaas/standard-flavors/flavor-manager-input.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+"""
+Convert yaml format from the one expected by flavors-openstack.py to the one expected
+by osism's flavor manager, cf. https://github.com/osism/openstack-flavor-manager .
+
+The conversion is performed from stdin to stdout.
+"""
+import logging
+import sys
+
+import yaml
+
+
+logger = logging.getLogger(__name__)
+
+
+def main(argv):
+    logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
+
+    # load the yaml, checking for sanity
+    try:
+        flavor_spec_data = yaml.safe_load(sys.stdin)
+    except Exception as e:
+        logger.critical(f"Unable to load: {e!r}")
+        logger.debug("Exception info", exc_info=True)
+        return 1
+
+    if 'meta' not in flavor_spec_data or 'name_key' not in flavor_spec_data['meta']:
+        logger.critical("Flavor definition missing 'meta' field or field incomplete")
+        return 1
+
+    if 'flavor_groups' not in flavor_spec_data:
+        logger.critical("Flavor definition missing 'flavor_groups' field")
+
+    # boilerplate / scaffolding
+    result = yaml.safe_load("""
+reference:
+  - field: name
+    mandatory_prefix: SCS-
+    optional_prefix: SCSX-
+  - field: cpus
+  - field: ram
+  - field: disk
+  - field: public
+    default: true
+  - field: disabled
+    default: false
+mandatory: []
+recommended: []
+""")
+
+    # transfer the info into the result yaml, again checking for sanity
+    name_key = flavor_spec_data['meta']['name_key']
+    for flavor_group in flavor_spec_data['flavor_groups']:
+        group_info = dict(flavor_group)
+        group_info.pop('list')
+        missing = {'status'} - set(group_info)
+        if missing:
+            logging.critical(f"Flavor group missing attributes: {', '.join(missing)}")
+            return 1
+        group_info.pop('status')
+        result_list = result[flavor_group['status']]
+        for flavor_spec in flavor_group['list']:
+            missing = {'name', 'cpus', 'ram'} - set(flavor_spec)
+            if missing:
+                logging.critical(f"Flavor spec missing attributes: {', '.join(missing)}")
+                return 1
+            flavor_spec = {**group_info, **flavor_spec}
+            extra_specs = {name_key: flavor_spec['name']}
+            extra_specs.update({
+                f"scs:{key}": value
+                for key, value in flavor_spec.items()
+                if key not in ('name', 'cpus', 'ram', 'disk')
+            })
+            flavor_spec = {
+                key: value
+                for key, value in flavor_spec.items()
+                if key in ('name', 'cpus', 'ram', 'disk')
+            }
+            result_list.append({**flavor_spec, **extra_specs})
+
+    print(yaml.dump(result, sort_keys=False))
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))