feat(mcp): available for provider reloading

pkg/provider/tools/loaders/mcp.py

@@ -30,8 +30,11 @@ class RuntimeMCPSession:
         self.server_name = server_name
         self.server_config = server_config
         self.ap = ap
+        
+        self.session = None
 
         self.exit_stack = AsyncExitStack()
+        self.functions = []
 
     async def _init_stdio_python_server(self):
         server_params = StdioServerParameters(
@@ -101,6 +104,10 @@ class RuntimeMCPSession:
                 func=func,
             ))
 
+    async def shutdown(self):
+        """关闭工具"""
+        await self.session._exit_stack.aclose()
+
 @loader.loader_class("mcp")
 class MCPLoader(loader.ToolLoader):
     """MCP 工具加载器。
@@ -112,6 +119,11 @@ class MCPLoader(loader.ToolLoader):
 
     _last_listed_functions: list[tools_entities.LLMFunction] = []
 
+    def __init__(self, ap: app.Application):
+        super().__init__(ap)
+        self.sessions = {}
+        self._last_listed_functions = []
+
     async def initialize(self):
 
         for server_config in self.ap.provider_cfg.data.get("mcp", {}).get("servers", []):
@@ -125,7 +137,7 @@ class MCPLoader(loader.ToolLoader):
     async def get_tools(self, enabled: bool=True) -> list[tools_entities.LLMFunction]:
         all_functions = []
 
-        for server_name, session in self.sessions.items():
+        for session in self.sessions.values():
             all_functions.extend(session.functions)
 
         self._last_listed_functions = all_functions
@@ -141,4 +153,9 @@ class MCPLoader(loader.ToolLoader):
                 if function.name == name:
                     return await function.func(query, **parameters)
 
-        raise ValueError(f"未找到工具: {name}")
+        raise ValueError(f"未找到工具: {name}")
+
+    async def shutdown(self):
+        """关闭工具"""
+        for session in self.sessions.values():
+            await session.shutdown()

pkg/provider/tools/loaders/plugin.py

@@ -85,4 +85,8 @@ class PluginToolLoader(loader.ToolLoader):
                     },
                     function_name=function.name,
                     function_description=function.description,
-                )
+                )
+
+    async def shutdown(self):
+        """关闭工具"""
+        pass