Initial SQL-only 1C adapter baseline

core/observability/store.py

@@ -0,0 +1,47 @@
+from __future__ import annotations
+
+import json
+import threading
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+
+
+def utc_now_iso() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+def resolve_audit_root(root: Path, *, service: str, env_var: str | None = None) -> Path:
+    import os
+
+    configured = os.environ.get(env_var or "", "").strip() if env_var else ""
+    if configured:
+        return Path(configured)
+    return root / "reports" / "observability" / service
+
+
+class JsonlAuditStore:
+    def __init__(self, root: Path, *, service: str) -> None:
+        self.root = root
+        self.service = service
+        self.root.mkdir(parents=True, exist_ok=True)
+        self._lock = threading.Lock()
+
+    def _path_for(self, event_type: str) -> Path:
+        stamp = datetime.now(timezone.utc).strftime("%Y%m%d")
+        return self.root / event_type / f"{stamp}.jsonl"
+
+    def write_event(self, event_type: str, payload: dict[str, Any]) -> dict[str, Any]:
+        record = {
+            "event_type": event_type,
+            "service": self.service,
+            "logged_at": utc_now_iso(),
+            **payload,
+        }
+        path = self._path_for(event_type)
+        path.parent.mkdir(parents=True, exist_ok=True)
+        line = json.dumps(record, ensure_ascii=False, separators=(",", ":")) + "\n"
+        with self._lock:
+            with path.open("a", encoding="utf-8") as handle:
+                handle.write(line)
+        return record