feat(ChatKnowledge): Support Financial Report Analysis (#1702)

Co-authored-by: hzh97 <2976151305@qq.com>
Co-authored-by: Fangyin Cheng <staneyffer@gmail.com>
Co-authored-by: licunxing <864255598@qq.com>

dbgpt/serve/core/service.py

@@ -1,7 +1,8 @@
 from abc import ABC, abstractmethod
-from typing import Generic
+from typing import Generic, Optional
 
-from dbgpt.component import BaseComponent
+from dbgpt.component import BaseComponent, SystemApp
+from dbgpt.core.awel.dag.dag_manager import DAGManager
 from dbgpt.serve.core.config import BaseServeConfig
 from dbgpt.storage.metadata._base_dao import REQ, RES, BaseDao, T
 
@@ -9,8 +10,20 @@ from dbgpt.storage.metadata._base_dao import REQ, RES, BaseDao, T
 class BaseService(BaseComponent, Generic[T, REQ, RES], ABC):
     name = "dbgpt_serve_base_service"
 
+    _dag_manager: Optional[DAGManager] = None
+    _system_app: Optional[SystemApp] = None
+
     def __init__(self, system_app):
         super().__init__(system_app)
+        self._system_app = system_app
+
+    def init_app(self, system_app: SystemApp):
+        """Initialize the service
+
+        Args:
+            system_app (SystemApp): The system app
+        """
+        self._system_app = system_app
 
     @property
     @abstractmethod
@@ -32,3 +45,14 @@ class BaseService(BaseComponent, Generic[T, REQ, RES], ABC):
             RES: The response
         """
         return self.dao.create(request)
+
+    @property
+    def dag_manager(self) -> DAGManager:
+        if self._dag_manager is None:
+            raise ValueError("DAGManager is not initialized")
+        return self._dag_manager
+
+    def before_start(self):
+        """Execute before the application starts"""
+        # if not self._system_app
+        self._dag_manager = DAGManager.get_instance(self._system_app)