cleanup kg

lightrag/kg/__init__.py

@@ -134,3 +134,25 @@ STORAGES = {
     "FaissVectorDBStorage": ".kg.faiss_impl",
     "QdrantVectorDBStorage": ".kg.qdrant_impl",
 }
+
+def verify_storage_implementation(
+        storage_type: str, storage_name: str
+    ) -> None:
+        """Verify if storage implementation is compatible with specified storage type
+
+        Args:
+            storage_type: Storage type (KV_STORAGE, GRAPH_STORAGE etc.)
+            storage_name: Storage implementation name
+
+        Raises:
+            ValueError: If storage implementation is incompatible or missing required methods
+        """
+        if storage_type not in STORAGE_IMPLEMENTATIONS:
+            raise ValueError(f"Unknown storage type: {storage_type}")
+
+        storage_info = STORAGE_IMPLEMENTATIONS[storage_type]
+        if storage_name not in storage_info["implementations"]:
+            raise ValueError(
+                f"Storage implementation '{storage_name}' is not compatible with {storage_type}. "
+                f"Compatible implementations are: {', '.join(storage_info['implementations'])}"
+            )