f

Store/registry.py

@@ -25,6 +25,8 @@ from Store._base import Store as BaseStore
 
 _SHA256_HEX_RE = re.compile(r"^[0-9a-fA-F]{64}$")
 
+_DISCOVERED_CLASSES_CACHE: Optional[Dict[str, Type[BaseStore]]] = None
+
 # Backends that failed to initialize earlier in the current process.
 # Keyed by (store_type, instance_key) where instance_key is the name used under config.store.<type>.<instance_key>.
 _FAILED_BACKEND_CACHE: Dict[tuple[str,
@@ -56,6 +58,10 @@ def _discover_store_classes() -> Dict[str, Type[BaseStore]]:
     Convention:
     - The store type key is the normalized class name (e.g. HydrusNetwork -> hydrusnetwork).
     """
+    global _DISCOVERED_CLASSES_CACHE
+    if _DISCOVERED_CLASSES_CACHE is not None:
+        return _DISCOVERED_CLASSES_CACHE
+
     import Store as store_pkg
 
     discovered: Dict[str,
@@ -67,15 +73,21 @@ def _discover_store_classes() -> Dict[str, Type[BaseStore]]:
                            "registry"}:
             continue
 
-        module = importlib.import_module(f"Store.{module_name}")
-        for _, obj in vars(module).items():
-            if not inspect.isclass(obj):
-                continue
-            if obj is BaseStore:
-                continue
-            if not issubclass(obj, BaseStore):
-                continue
-            discovered[_normalize_store_type(obj.__name__)] = obj
+        try:
+            module = importlib.import_module(f"Store.{module_name}")
+            for _, obj in vars(module).items():
+                if not inspect.isclass(obj):
+                    continue
+                if obj is BaseStore:
+                    continue
+                if not issubclass(obj, BaseStore):
+                    continue
+                discovered[_normalize_store_type(obj.__name__)] = obj
+        except Exception as exc:
+            debug(f"[Store] Failed to import module '{module_name}': {exc}")
+            continue
+
+    _DISCOVERED_CLASSES_CACHE = discovered
     return discovered