refactor: Storage 改用工厂模式，server reload 接入 uvicorn

- 新增 StorageFactory(BaseFactory[BaseStorage]) 替代手写 dict 注册
- H5Storage / JSONStorage 通过 @StorageFactory.register 注册
- dataset.py 使用 StorageFactory.create() 替代 create_storage()
- 删除 create_storage / available_storage_types 死函数
- server.py reload 参数正式传入 uvicorn.run()

astrai/dataset/__init__.py

@@ -9,8 +9,7 @@ from astrai.dataset.storage import (
     H5Storage,
     JSONStorage,
     MultiSegmentFetcher,
-    available_storage_types,
-    create_storage,
+    StorageFactory,
     detect_format,
     load_h5,
     load_json,
@@ -26,9 +25,8 @@ __all__ = [
     "BaseStorage",
     "H5Storage",
     "JSONStorage",
-    "create_storage",
+    "StorageFactory",
     "detect_format",
-    "available_storage_types",
     "save_h5",
     "load_h5",
     "save_json",

astrai/dataset/dataset.py

@@ -9,7 +9,7 @@ from torch.utils.data import Dataset
 
 from astrai.dataset.storage import (
     BaseStorage,
-    create_storage,
+    StorageFactory,
     detect_format,
 )
 from astrai.factory import BaseFactory
@@ -42,7 +42,7 @@ class BaseDataset(Dataset, ABC):
         """
         if storage_type is None:
             storage_type = detect_format(load_path)
-        self.storage = create_storage(storage_type)
+        self.storage = StorageFactory.create(storage_type)
         self.storage.load(load_path, tokenizer=tokenizer)
 
     def load_json(self, load_path: str, tokenizer=None):

astrai/dataset/storage.py

@@ -15,6 +15,8 @@ import h5py
 import torch
 from torch import Tensor
 
+from astrai.factory import BaseFactory
+
 
 def save_h5(file_path: str, file_name: str, tensor_group: Dict[str, List[Tensor]]):
     os.makedirs(file_path, exist_ok=True)
@@ -258,6 +260,24 @@ class BaseStorage(ABC):
         return self._fetcher.multi_keys
 
 
+class StorageFactory(BaseFactory["BaseStorage"]):
+    """Factory for creating storage backends by type name.
+
+    Example:
+        @StorageFactory.register("custom")
+        class CustomStorage(BaseStorage):
+            ...
+
+        storage = StorageFactory.create("custom")
+    """
+
+    @classmethod
+    def _validate_component(cls, storage_cls: type) -> None:
+        if not issubclass(storage_cls, BaseStorage):
+            raise TypeError(f"{storage_cls.__name__} must inherit from BaseStorage")
+
+
+@StorageFactory.register("h5")
 class H5Storage(BaseStorage):
     """HDF5-based storage backend (pre-tokenized data)."""
 
@@ -266,6 +286,7 @@ class H5Storage(BaseStorage):
         self._fetcher = MultiSegmentFetcher(segments)
 
 
+@StorageFactory.register("json")
 class JSONStorage(BaseStorage):
     """JSON-based storage backend.
 
@@ -278,35 +299,3 @@ class JSONStorage(BaseStorage):
     def load(self, load_path: str, tokenizer=None) -> None:
         segments = load_json(load_path, tokenizer=tokenizer)
         self._fetcher = MultiSegmentFetcher(segments)
-
-
-_STORAGE_REGISTRY: Dict[str, type] = {
-    "h5": H5Storage,
-    "json": JSONStorage,
-}
-
-
-def create_storage(storage_type: str) -> BaseStorage:
-    """Create a storage instance by type name.
-
-    Args:
-        storage_type: Storage type name ("h5", "json")
-
-    Returns:
-        Storage instance
-
-    Raises:
-        ValueError: If the storage type is unknown
-    """
-    storage_cls = _STORAGE_REGISTRY.get(storage_type)
-    if storage_cls is None:
-        raise ValueError(
-            f"Unknown storage type: '{storage_type}'. "
-            f"Available: {sorted(_STORAGE_REGISTRY.keys())}"
-        )
-    return storage_cls()
-
-
-def available_storage_types() -> List[str]:
-    """Return list of registered storage type names."""
-    return sorted(_STORAGE_REGISTRY.keys())

astrai/inference/api/server.py

@@ -163,4 +163,5 @@ def run_server(
         app,
         host=host,
         port=port,
+        reload=reload,
     )

tests/data/test_dataset.py

@@ -10,7 +10,7 @@ from astrai.dataset.storage import (
     BaseSegmentFetcher,
     H5Storage,
     MultiSegmentFetcher,
-    create_storage,
+    StorageFactory,
     detect_format,
     load_json,
     save_h5,
@@ -368,9 +368,9 @@ def test_detect_format_unsupported_file(base_test_env):
 
 
 def test_create_storage_invalid_type():
-    """create_storage raises ValueError for unknown type"""
-    with pytest.raises(ValueError, match="Unknown storage type"):
-        create_storage("parquet")
+    """StorageFactory.create raises ValueError for unknown type"""
+    with pytest.raises(ValueError, match="Unknown component"):
+        StorageFactory.create("parquet")
 
 
 def test_json_pretokenized_without_tokenizer(base_test_env):