first commit

evaluator/identity/resolver.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Any
+
+import yaml
+
+
+def _deep_get(data: dict, path: str):
+    cur = data
+    for part in path.split("."):
+        if not isinstance(cur, dict):
+            return None
+        cur = cur.get(part)
+    return cur
+
+
+class IdentityResolver:
+    def __init__(self, path: str = "configs/identity.yaml"):
+        self.path = Path(path)
+        self.config = yaml.safe_load(self.path.read_text(encoding="utf-8")) or {}
+        self.identity = self.config.get("identity", {})
+        self.keys = self.identity.get("keys", {})
+
+    def resolve(self, payload: dict[str, Any]) -> dict[str, Any]:
+        out = {}
+
+        for key, spec in self.keys.items():
+            value = None
+            for source in spec.get("sources", []):
+                value = _deep_get(payload, source)
+                if value not in (None, ""):
+                    break
+            out[key] = str(value) if value not in (None, "") else None
+
+        out["metadata"] = {
+            "identity_version": self.identity.get("version"),
+            "identity_source": str(self.path),
+        }
+
+        return out