feat: prompt 加载器的扩展性

pkg/provider/sysprompt/loader.py

@@ -1,13 +1,27 @@
 from __future__ import annotations
 import abc
+import typing
 
 from ...core import app
 from . import entities
 
 
+preregistered_loaders: list[typing.Type[PromptLoader]] = []
+
+def loader_class(name: str):
+
+    def decorator(cls: typing.Type[PromptLoader]) -> typing.Type[PromptLoader]:
+        cls.name = name
+        preregistered_loaders.append(cls)
+        return cls
+    
+    return decorator
+
+
 class PromptLoader(metaclass=abc.ABCMeta):
     """Prompt加载器抽象类
     """
+    name: str
 
     ap: app.Application
 

pkg/provider/sysprompt/loaders/scenario.py

@@ -8,6 +8,7 @@ from .. import entities
 from ....provider import entities as llm_entities
 
 
+@loader.loader_class("full_scenario")
 class ScenarioPromptLoader(loader.PromptLoader):
     """加载scenario目录下的json"""
 

pkg/provider/sysprompt/loaders/single.py

@@ -6,6 +6,7 @@ from .. import entities
 from ....provider import entities as llm_entities
 
 
+@loader.loader_class("normal")
 class SingleSystemPromptLoader(loader.PromptLoader):
     """配置文件中的单条system prompt的prompt加载器
     """

pkg/provider/sysprompt/sysprompt.py

@@ -20,12 +20,14 @@ class PromptManager:
 
     async def initialize(self):
 
-        loader_map = {
-            "normal": single.SingleSystemPromptLoader,
-            "full_scenario": scenario.ScenarioPromptLoader
-        }
+        mode_name = self.ap.provider_cfg.data['prompt-mode']
 
-        loader_cls = loader_map[self.ap.provider_cfg.data['prompt-mode']]
+        for loader_cls in loader.preregistered_loaders:
+            if loader_cls.name == mode_name:
+                loader_cls = loader_cls
+                break
+        else:
+            raise ValueError(f'未知的 Prompt 加载器: {mode_name}')
 
         self.loader_inst: loader.PromptLoader = loader_cls(self.ap)