update:合并最新代码

main/xiaozhi-server/core/mcp/MCPClient.py

@@ -0,0 +1,86 @@
+from datetime import timedelta
+from typing import Optional
+from contextlib import AsyncExitStack
+import os, shutil
+from mcp import ClientSession, StdioServerParameters
+from mcp.client.stdio import stdio_client
+
+from config.logger import setup_logging
+
+TAG = __name__
+
+class MCPClient:
+    def __init__(self, config):
+        # Initialize session and client objects
+        self.session: Optional[ClientSession] = None
+        self.exit_stack = AsyncExitStack()
+        self.logger = setup_logging()
+        self.config = config
+        self.tolls = []
+
+    async def initialize(self):
+        args = self.config.get("args", [])
+
+        command = (
+            shutil.which("npx")
+            if self.config["command"] == "npx"
+            else self.config["command"]
+        )
+        
+        env={**os.environ}
+        if self.config.get("env"):
+            env.update(self.config["env"])
+        
+        server_params = StdioServerParameters(
+            command=command,
+            args=args,
+            env=env
+        )
+        
+        stdio_transport = await self.exit_stack.enter_async_context(stdio_client(server_params))
+        self.stdio, self.write = stdio_transport
+        time_out_delta =  timedelta(seconds=15)
+        self.session = await self.exit_stack.enter_async_context(ClientSession(read_stream=self.stdio, write_stream=self.write, read_timeout_seconds=time_out_delta))
+        
+        await self.session.initialize()
+        
+        # List available tools
+        response = await self.session.list_tools()
+        tools = response.tools
+        self.tools = tools
+        self.logger.bind(tag=TAG).info(f"Connected to server with tools:{[tool.name for tool in tools]}")
+    
+    def has_tool(self, tool_name):
+        return any(tool.name == tool_name for tool in self.tools)
+    
+    def get_available_tools(self):
+        available_tools = [{"type": "function", "function":{ 
+            "name": tool.name,
+            "description": tool.description,
+            "parameters": tool.inputSchema
+        } } for tool in self.tools]
+
+        return available_tools
+    
+    async def call_tool(self, tool_name: str, tool_args: dict):
+        self.logger.bind(tag=TAG).info(f"MCPClient Calling tool {tool_name} with args: {tool_args}")
+        try:
+            response = await self.session.call_tool(tool_name, tool_args)
+        except Exception as e:
+            self.logger.bind(tag=TAG).error(f"Error calling tool {tool_name}: {e}")
+            from types import SimpleNamespace
+            error_content = SimpleNamespace(
+                type='text',
+                text=f"Error calling tool {tool_name}: {e}"
+            )
+            error_response = SimpleNamespace(
+                content=[error_content],
+                isError=True
+            )
+            return error_response
+        self.logger.bind(tag=TAG).info(f"MCPClient Response from tool {tool_name}: {response}")
+        return response
+
+    async def cleanup(self):
+        """Clean up resources"""
+        await self.exit_stack.aclose()

main/xiaozhi-server/core/mcp/manager.py

@@ -0,0 +1,110 @@
+"""MCP服务管理器"""
+import os, json
+from typing import Dict, Any, List
+from .MCPClient import MCPClient
+from config.logger import setup_logging
+from core.utils.util import get_project_dir
+from plugins_func.register import register_function, ActionResponse, Action, ToolType
+
+TAG = __name__
+
+class MCPManager:
+    """管理多个MCP服务的集中管理器"""
+
+    def __init__(self,conn) -> None:
+        """
+        初始化MCP管理器
+        """
+        self.conn = conn
+        self.logger = setup_logging()
+        self.config_path = get_project_dir() + 'data/.mcp_server_settings.json'
+        if os.path.exists(self.config_path) == False:
+            self.config_path = ""
+            self.logger.bind(tag=TAG).warning(f"请检查mcp服务配置文件：data/.mcp_server_settings.json")
+        self.client: Dict[str, MCPClient] = {}
+        self.tools = []
+
+    def load_config(self) -> Dict[str, Any]:
+        """加载MCP服务配置
+        Returns:
+            Dict[str, Any]: 服务配置字典
+        """
+        if len(self.config_path) == 0:
+            return {}
+        
+        try:
+            with open(self.config_path, 'r', encoding='utf-8') as f:
+                config = json.load(f)
+            return config.get('mcpServers', {})
+        except Exception as e:
+            self.logger.bind(tag=TAG).error(f"Error loading MCP config from {self.config_path}: {e}")
+            return {}
+
+    async def initialize_servers(self) -> None:
+        """初始化所有MCP服务"""
+        config = self.load_config()
+        for name, srv_config in config.items():
+            if not srv_config.get("command"):
+                self.logger.bind(tag=TAG).warning(f"Skipping server {name}: command not specified")
+                continue
+
+            try:
+                client = MCPClient(srv_config)
+                await client.initialize()
+                self.client[name] = client
+                self.logger.bind(tag=TAG).info(f"Initialized MCP client: {name}")
+                client_tools = client.get_available_tools()
+                self.tools.extend(client_tools)
+                for tool in client_tools:
+                    func_name = "mcp_"+tool["function"]["name"]
+                    register_function(func_name, tool, ToolType.MCP_CLIENT)(self.execute_tool)
+                    self.conn.func_handler.function_registry.register_function(func_name)
+
+            except Exception as e:
+                self.logger.bind(tag=TAG).error(f"Failed to initialize MCP server {name}: {e}")
+        self.conn.func_handler.upload_functions_desc()
+
+    def get_all_tools(self) -> List[Dict[str, Any]]:
+        """获取所有服务的工具function定义
+        Returns:
+            List[Dict[str, Any]]: 所有工具的function定义列表
+        """
+        return self.tools
+
+    def is_mcp_tool(self, tool_name: str) -> bool:
+        """检查是否是MCP工具
+        Args:
+            tool_name: 工具名称
+        Returns:
+            bool: 是否是MCP工具
+        """
+        for tool in self.tools:
+            if tool.get("function") != None and tool["function"].get("name") == tool_name:
+                return True
+        return False
+
+    async def execute_tool(self, tool_name: str, arguments: Dict[str, Any]) -> Any:
+        """执行工具调用
+        Args:
+            tool_name: 工具名称
+            arguments: 工具参数 
+        Returns:
+            Any: 工具执行结果
+        Raises:
+            ValueError: 工具未找到时抛出
+        """
+        self.logger.bind(tag=TAG).info(f"Executing tool {tool_name} with arguments: {arguments}")
+        for client in self.client.values():
+            if client.has_tool(tool_name):
+                return await client.call_tool(tool_name, arguments)
+            
+        raise ValueError(f"Tool {tool_name} not found in any MCP server")
+
+    async def cleanup_all(self) -> None:
+        for name, client in self.client.items():
+            try:
+                await client.cleanup()
+                self.logger.bind(tag=TAG).info(f"Cleaned up MCP client: {name}")
+            except Exception as e:
+                self.logger.bind(tag=TAG).error(f"Error cleaning up MCP client {name}: {e}")
+        self.client.clear()