进一步清理代码和注册过程

sync_state_machine/common/registry.py

@@ -17,7 +17,7 @@ Domain 注册中心
         node_type="contract",
         schema=ContractResponse,
         node_class=ContractSyncNode,
-        jsonl_handler_class=ContractJsonlHandler
+        jsonl_handler_class=ContractJsonlHandler,
     )
     
     # Collection 查询 SyncNode 类
@@ -47,7 +47,6 @@ class DomainRegistration:
     strategy_class: Optional[Type[Any]] = None  # 可选，部分 domain 可能只读
     jsonl_handler_class: Optional[Type[Any]] = None
     api_handler_class: Optional[Type[Any]] = None
-    db_handler_class: Optional[Type[Any]] = None
     handler_classes: Dict[str, Type[Any]] = field(default_factory=dict)
     metadata: Dict[str, Any] = field(default_factory=dict)  # 额外元数据
 
@@ -69,7 +68,6 @@ class DomainRegistry:
     _BUILTIN_HANDLER_ATTRS: Dict[str, str] = {
         "jsonl": "jsonl_handler_class",
         "api": "api_handler_class",
-        "db": "db_handler_class",
     }
     
     @classmethod
@@ -81,7 +79,6 @@ class DomainRegistry:
         strategy_class: Optional[Type[Any]] = None,
         jsonl_handler_class: Optional[Type[Any]] = None,
         api_handler_class: Optional[Type[Any]] = None,
-        db_handler_class: Optional[Type[Any]] = None,
         **metadata
     ) -> None:
         """
@@ -94,7 +91,6 @@ class DomainRegistry:
             strategy_class: Strategy 子类（可选）
             jsonl_handler_class: JSONL Handler 类（可选）
             api_handler_class: API Handler 类（可选）
-            db_handler_class: DB Handler 类（可选）
             **metadata: 额外的元数据
             
         Raises:
@@ -110,7 +106,6 @@ class DomainRegistry:
             strategy_class=strategy_class,
             jsonl_handler_class=jsonl_handler_class,
             api_handler_class=api_handler_class,
-            db_handler_class=db_handler_class,
             metadata=metadata
         )
         for datasource_type, attr_name in cls._BUILTIN_HANDLER_ATTRS.items():
@@ -187,10 +182,6 @@ class DomainRegistry:
             setattr(reg, attr_name, handler_class)
 
     @classmethod
-    def register_db_handler(cls, node_type: str, db_handler_class: Type[Any]) -> None:
-        """为已注册 domain 补充 DB Handler。"""
-        cls.register_handler(node_type, "db", db_handler_class)
-    
     @classmethod
     def get_schema(cls, node_type: str) -> Type[BaseModel]:
         """获取 Schema 类"""
@@ -245,7 +236,6 @@ class DomainRegistry:
             print(f"   Strategy Class:   {reg.strategy_class.__name__ if reg.strategy_class else '❌ None'}")
             print(f"   JSONL Handler:    {reg.jsonl_handler_class.__name__ if reg.jsonl_handler_class else '❌ None'}")
             print(f"   API Handler:      {reg.api_handler_class.__name__ if reg.api_handler_class else '❌ None'}")
-            print(f"   DB Handler:       {reg.db_handler_class.__name__ if reg.db_handler_class else '❌ None'}")
             extra_handler_types = sorted(
                 handler_type for handler_type in reg.handler_classes if handler_type not in cls._BUILTIN_HANDLER_ATTRS
             )
@@ -272,7 +262,7 @@ class DomainRegistry:
                     "has_strategy": True,
                     "has_jsonl_handler": True,
                     "has_api_handler": True,
-                    "has_db_handler": False
+                    "handler_types": []
                 },
                 ...
             }
@@ -284,7 +274,6 @@ class DomainRegistry:
                 "has_strategy": reg.strategy_class is not None,
                 "has_jsonl_handler": reg.jsonl_handler_class is not None,
                 "has_api_handler": reg.api_handler_class is not None,
-                "has_db_handler": reg.db_handler_class is not None,
                 "handler_types": sorted(reg.handler_classes.keys()),
             }
         return summary