feat(rag): Support rag retriever evaluation (#1291)

dbgpt/core/awel/trigger/base.py

@@ -2,16 +2,18 @@
 from __future__ import annotations
 
 from abc import ABC, abstractmethod
+from typing import Any, Generic
 
 from ..operators.common_operator import TriggerOperator
+from ..task.base import OUT
 
 
-class Trigger(TriggerOperator, ABC):
+class Trigger(TriggerOperator[OUT], ABC, Generic[OUT]):
     """Base class for all trigger classes.
 
     Now only support http trigger.
     """
 
     @abstractmethod
-    async def trigger(self) -> None:
+    async def trigger(self, **kwargs) -> Any:
         """Trigger the workflow or a specific operation in the workflow."""