Refactor (#4303)

### What problem does this PR solve?

### Type of change
- [x] Refactoring

api/apps/__init__.py

@@ -152,8 +152,8 @@ def load_user(web_request):
                 return user[0]
             else:
                 return None
-        except Exception:
-            logging.exception("load_user got exception")
+        except Exception as e:
+            logging.warning(f"load_user got exception {e}")
             return None
     else:
         return None

api/apps/conversation_app.py

@@ -65,10 +65,6 @@ def set_conversation():
             "message": [{"role": "assistant", "content": dia.prompt_config["prologue"]}]
         }
         ConversationService.save(**conv)
-        e, conv = ConversationService.get_by_id(conv["id"])
-        if not e:
-            return get_data_error_result(message="Fail to new a conversation!")
-        conv = conv.to_dict()
         return get_json_result(data=conv)
     except Exception as e:
         return server_error_response(e)

api/db/services/document_service.py

@@ -96,14 +96,11 @@ class DocumentService(CommonService):
     def insert(cls, doc):
         if not cls.save(**doc):
             raise RuntimeError("Database error (Document)!")
-        e, doc = cls.get_by_id(doc["id"])
-        if not e:
-            raise RuntimeError("Database error (Document retrieval)!")
-        e, kb = KnowledgebaseService.get_by_id(doc.kb_id)
+        e, kb = KnowledgebaseService.get_by_id(doc["kb_id"])
         if not KnowledgebaseService.update_by_id(
                 kb.id, {"doc_num": kb.doc_num + 1}):
             raise RuntimeError("Database error (Knowledgebase)!")
-        return doc
+        return Document(**doc)
 
     @classmethod
     @DB.connection_context()

api/utils/api_utils.py

@@ -98,6 +98,7 @@ def get_exponential_backoff_interval(retries, full_jitter=False):
 
 def get_data_error_result(code=settings.RetCode.DATA_ERROR,
                           message='Sorry! Data missing!'):
+    logging.exception(Exception(message))
     result_dict = {
         "code": code,
         "message": message}