feat: integrate MinIO-backed user filesystem

app-instance/instance-registry.py

@@ -46,6 +46,21 @@ def _normalize_record(record: dict[str, Any]) -> dict[str, Any]:
     return normalized
 
 
+def read_registry(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        return _default_data()
+    try:
+        data = json.loads(path.read_text(encoding="utf-8"))
+    except json.JSONDecodeError:
+        return _default_data()
+    if not isinstance(data, dict):
+        return _default_data()
+    if not isinstance(data.get("instances"), list):
+        data["instances"] = []
+    data["instances"] = [_normalize_record(item) for item in data["instances"] if isinstance(item, dict)]
+    return data
+
+
 @contextmanager
 def locked_registry(path: Path):
     path.parent.mkdir(parents=True, exist_ok=True)
@@ -118,8 +133,8 @@ def _get_record(
 
 def cmd_list(args: argparse.Namespace) -> int:
     path = Path(args.registry).expanduser()
-    with locked_registry(path) as data:
-        instances = list(data["instances"])
+    data = read_registry(path)
+    instances = list(data["instances"])
     if args.json:
         json.dump({"instances": instances}, sys.stdout, indent=2, ensure_ascii=False)
         sys.stdout.write("\n")
@@ -143,15 +158,15 @@ def cmd_list(args: argparse.Namespace) -> int:
 
 def cmd_get(args: argparse.Namespace) -> int:
     path = Path(args.registry).expanduser()
-    with locked_registry(path) as data:
-        record = _get_record(
-            data,
-            instance_id=args.instance_id,
-            slug=args.slug,
-            container_name=args.container_name,
-            username=args.username,
-            instance_host=args.instance_host,
-        )
+    data = read_registry(path)
+    record = _get_record(
+        data,
+        instance_id=args.instance_id,
+        slug=args.slug,
+        container_name=args.container_name,
+        username=args.username,
+        instance_host=args.instance_host,
+    )
     if record is None:
         return 1
     json.dump(record, sys.stdout, indent=2, ensure_ascii=False)