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+"""
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+协议工具集合
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+
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+提供基于协议实现的工具接口：
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+- MCP Tool: 基于 fastmcp 库，用于连接和调用 MCP 服务器
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+- A2A Tool: 基于官方 a2a 库，用于 Agent 间通信（需要安装 a2a）
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+- ANP Tool: 基于概念实现，用于服务发现和网络管理
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+"""
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+
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+from typing import Dict, Any, List, Optional
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+from ..base import Tool, ToolParameter
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+import os
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+
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+# todo: 修改by xc
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+import gc
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+import asyncio
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+import sys
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+if sys.platform == "win32":
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+ # Windows 10+: 使用 SelectorEventLoop 替代 ProactorEventLoop，
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+ # 可避免 GetQueuedCompletionStatus 阻塞问题
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+ if sys.version_info >= (3, 8):
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+ asyncio.set_event_loop_policy(
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+ asyncio.WindowsSelectorEventLoopPolicy()
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+ )
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+
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+
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+# MCP服务器环境变量映射表
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+# 用于自动检测常见MCP服务器需要的环境变量
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+MCP_SERVER_ENV_MAP = {
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+ "server-github": ["GITHUB_PERSONAL_ACCESS_TOKEN"],
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+ "server-slack": ["SLACK_BOT_TOKEN", "SLACK_TEAM_ID"],
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+ "server-google-drive": ["GOOGLE_CLIENT_ID", "GOOGLE_CLIENT_SECRET", "GOOGLE_REFRESH_TOKEN"],
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+ "server-postgres": ["POSTGRES_CONNECTION_STRING"],
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+ "server-sqlite": [], # 不需要环境变量
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+ "server-filesystem": [], # 不需要环境变量
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+}
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+
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+
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+class MCPTool(Tool):
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+ """MCP (Model Context Protocol) 工具
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+
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+ 连接到 MCP 服务器并调用其提供的工具、资源和提示词。
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+
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+ 功能：
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+ - 列出服务器提供的工具
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+ - 调用服务器工具
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+ - 读取服务器资源
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+ - 获取提示词模板
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+
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+ 使用示例:
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+ >>> from hello_agents.tools.builtin import MCPTool
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+ >>>
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+ >>> # 方式1: 使用内置演示服务器
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+ >>> tool = MCPTool() # 自动创建内置服务器
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+ >>> result = tool.run({"action": "list_tools"})
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+ >>>
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+ >>> # 方式2: 连接到外部 MCP 服务器
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+ >>> tool = MCPTool(server_command=["python", "examples/mcp_example.py"])
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+ >>> result = tool.run({"action": "list_tools"})
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+ >>>
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+ >>> # 方式3: 使用自定义 FastMCP 服务器
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+ >>> from fastmcp import FastMCP
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+ >>> server = FastMCP("MyServer")
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+ >>> tool = MCPTool(server=server)
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+
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+ 注意：使用 fastmcp 库，已包含在依赖中
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+ """
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+
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+ def __init__(self,
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+ name: str = "mcp",
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+ description: Optional[str] = None,
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+ server_command: Optional[List[str]] = None,
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+ server_args: Optional[List[str]] = None,
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+ server: Optional[Any] = None,
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+ auto_expand: bool = True,
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+ env: Optional[Dict[str, str]] = None,
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+ env_keys: Optional[List[str]] = None):
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+ """
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+ 初始化 MCP 工具
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+
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+ Args:
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+ name: 工具名称（默认为"mcp"，建议为不同服务器指定不同名称）
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+ description: 工具描述（可选，默认为通用描述）
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+ server_command: 服务器启动命令（如 ["python", "server.py"]）
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+ server_args: 服务器参数列表
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+ server: FastMCP 服务器实例（可选，用于内存传输）
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+ auto_expand: 是否自动展开为独立工具（默认True）
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+ env: 环境变量字典（优先级最高，直接传递给MCP服务器）
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+ env_keys: 要从系统环境变量加载的key列表（优先级中等）
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+
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+ 环境变量优先级（从高到低）：
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+ 1. 直接传递的env参数
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+ 2. env_keys指定的环境变量
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+ 3. 自动检测的环境变量（根据server_command）
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+
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+ 注意：如果所有参数都为空，将创建内置演示服务器
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+
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+ 示例：
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+ >>> # 方式1：直接传递环境变量（优先级最高）
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+ >>> github_tool = MCPTool(
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+ ... name="github",
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+ ... server_command=["npx", "-y", "@modelcontextprotocol/server-github"],
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+ ... env={"GITHUB_PERSONAL_ACCESS_TOKEN": "ghp_xxx"}
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+ ... )
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+ >>>
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+ >>> # 方式2：从.env文件加载指定的环境变量
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+ >>> github_tool = MCPTool(
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+ ... name="github",
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+ ... server_command=["npx", "-y", "@modelcontextprotocol/server-github"],
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+ ... env_keys=["GITHUB_PERSONAL_ACCESS_TOKEN"]
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+ ... )
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+ >>>
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+ >>> # 方式3：自动检测（最简单，推荐）
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+ >>> github_tool = MCPTool(
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+ ... name="github",
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+ ... server_command=["npx", "-y", "@modelcontextprotocol/server-github"]
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+ ... # 自动从环境变量加载GITHUB_PERSONAL_ACCESS_TOKEN
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+ ... )
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+ """
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+ self.server_command = server_command
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+ self.server_args = server_args or []
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+ self.server = server
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+ self._client = None
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+ self._available_tools = []
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+ self.auto_expand = auto_expand
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+ self.prefix = f"{name}_" if auto_expand else ""
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+
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+ # 环境变量处理（优先级：env > env_keys > 自动检测）
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+ self.env = self._prepare_env(env, env_keys, server_command)
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+
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+ # 如果没有指定任何服务器，创建内置演示服务器
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+ if not server_command and not server:
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+ self.server = self._create_builtin_server()
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+
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+ # 自动发现工具
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+ self._discover_tools()
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+
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+ # 设置默认描述或自动生成
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+ if description is None:
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+ description = self._generate_description()
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+
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+ super().__init__(
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+ name=name,
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+ description=description
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+ )
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+
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+ def _prepare_env(self,
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+ env: Optional[Dict[str, str]],
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+ env_keys: Optional[List[str]],
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+ server_command: Optional[List[str]]) -> Dict[str, str]:
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+ """
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+ 准备环境变量
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+
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+ 优先级：env > env_keys > 自动检测
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+
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+ Args:
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+ env: 直接传递的环境变量字典
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+ env_keys: 要从系统环境变量加载的key列表
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+ server_command: 服务器命令（用于自动检测）
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+
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+ Returns:
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+ 合并后的环境变量字典
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+ """
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+ result_env = {}
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+
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+ # 1. 自动检测（优先级最低）
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+ if server_command:
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+ # 从命令中提取服务器名称
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+ server_name = None
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+ for part in server_command:
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+ if "server-" in part:
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+ # 提取类似 "@modelcontextprotocol/server-github" 中的 "server-github"
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+ server_name = part.split("/")[-1] if "/" in part else part
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+ break
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+
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+ # 查找映射表
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+ if server_name and server_name in MCP_SERVER_ENV_MAP:
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+ auto_keys = MCP_SERVER_ENV_MAP[server_name]
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+ for key in auto_keys:
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+ value = os.getenv(key)
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+ if value:
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+ result_env[key] = value
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+ print(f"🔑 自动加载环境变量: {key}")
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+
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+ # 2. env_keys指定的环境变量（优先级中等）
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+ if env_keys:
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+ for key in env_keys:
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+ value = os.getenv(key)
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+ if value:
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+ result_env[key] = value
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+ print(f"🔑 从env_keys加载环境变量: {key}")
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+ else:
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+ print(f"⚠️ 警告: 环境变量 {key} 未设置")
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+
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+ # 3. 直接传递的env（优先级最高）
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+ if env:
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+ result_env.update(env)
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+ for key in env.keys():
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+ print(f"🔑 使用直接传递的环境变量: {key}")
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+
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+ return result_env
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+
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+ def _create_builtin_server(self):
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+ """创建内置演示服务器"""
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+ try:
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+ from fastmcp import FastMCP
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+
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+ server = FastMCP("HelloAgents-BuiltinServer")
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+
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+ @server.tool()
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+ def add(a: float, b: float) -> float:
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+ """加法计算器"""
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+ return a + b
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+
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+ @server.tool()
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+ def subtract(a: float, b: float) -> float:
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+ """减法计算器"""
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+ return a - b
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+
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+ @server.tool()
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+ def multiply(a: float, b: float) -> float:
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+ """乘法计算器"""
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+ return a * b
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+
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+ @server.tool()
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+ def divide(a: float, b: float) -> float:
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+ """除法计算器"""
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+ if b == 0:
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+ raise ValueError("除数不能为零")
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+ return a / b
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+
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+ @server.tool()
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+ def greet(name: str = "World") -> str:
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+ """友好问候"""
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+ return f"Hello, {name}! 欢迎使用 HelloAgents MCP 工具！"
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+
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+ @server.tool()
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+ def get_system_info() -> dict:
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+ """获取系统信息"""
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+ import platform
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+ import sys
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+ return {
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+ "platform": platform.system(),
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+ "python_version": sys.version,
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+ "server_name": "HelloAgents-BuiltinServer",
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+ "tools_count": 6
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+ }
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+
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+ return server
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+
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+ except ImportError:
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+ raise ImportError(
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+ "创建内置 MCP 服务器需要 fastmcp 库。请安装: pip install fastmcp"
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+ )
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+
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+ def _discover_tools(self):
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+ """发现MCP服务器提供的所有工具"""
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+ try:
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+ from hello_agents.protocols.mcp.client import MCPClient
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+ import asyncio
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+
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+ async def discover():
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+ client_source = self.server if self.server else self.server_command
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+ async with MCPClient(client_source, self.server_args, env=self.env) as client:
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+ tools = await client.list_tools()
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+ return tools
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+
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+ # 运行异步发现
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+ try:
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+ loop = asyncio.get_running_loop()
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+ # 如果已有循环，在新线程中运行
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+ import concurrent.futures
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+ def run_in_thread():
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+ new_loop = asyncio.new_event_loop()
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+ asyncio.set_event_loop(new_loop)
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+ try:
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+ return new_loop.run_until_complete(discover())
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+ finally:
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+ new_loop.close()
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+
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+ with concurrent.futures.ThreadPoolExecutor() as executor:
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+ future = executor.submit(run_in_thread)
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+ self._available_tools = future.result()
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+ except RuntimeError:
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+ # 没有运行中的循环
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+ self._available_tools = asyncio.run(discover())
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+
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+ except Exception as e:
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+ # 工具发现失败不影响初始化
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+ self._available_tools = []
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+
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+ def _generate_description(self) -> str:
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+ """生成增强的工具描述"""
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+ if not self._available_tools:
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+ return "连接到 MCP 服务器，调用工具、读取资源和获取提示词。支持内置服务器和外部服务器。"
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+
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+ if self.auto_expand:
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+ # 展开模式：简单描述
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+ return f"MCP工具服务器，包含{len(self._available_tools)}个工具。这些工具会自动展开为独立的工具供Agent使用。"
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+ else:
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+ # 非展开模式：详细描述
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+ desc_parts = [
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+ f"MCP工具服务器，提供{len(self._available_tools)}个工具："
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+ ]
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+
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+ # 列出所有工具
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+ for tool in self._available_tools:
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+ tool_name = tool.get('name', 'unknown')
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+ tool_desc = tool.get('description', '无描述')
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+ # 简化描述，只取第一句
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+ short_desc = tool_desc.split('.')[0] if tool_desc else '无描述'
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+ desc_parts.append(f" • {tool_name}: {short_desc}")
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+
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+ # 添加调用格式说明
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+ desc_parts.append("\n调用格式：返回JSON格式的参数")
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+ desc_parts.append('{"action": "call_tool", "tool_name": "工具名", "arguments": {...}}')
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+
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+ # 添加示例
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+ if self._available_tools:
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+ first_tool = self._available_tools[0]
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+ tool_name = first_tool.get('name', 'example')
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+ desc_parts.append(f'\n示例：{{"action": "call_tool", "tool_name": "{tool_name}", "arguments": {{...}}}}')
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+
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+ return "\n".join(desc_parts)
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+
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+ def get_expanded_tools(self) -> List['Tool']: # type: ignore
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+ """
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+ 获取展开的工具列表
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+
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+ 将MCP服务器的每个工具包装成独立的Tool对象
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+
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+ Returns:
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+ Tool对象列表
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+ """
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+ if not self.auto_expand:
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+ return []
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+
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+ from .mcp_wrapper_tool import MCPWrappedTool
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+
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+ expanded_tools = []
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+ for tool_info in self._available_tools:
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+ wrapped_tool = MCPWrappedTool(
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+ mcp_tool=self,
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+ tool_info=tool_info,
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+ prefix=self.prefix
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+ )
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+ expanded_tools.append(wrapped_tool)
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+
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+ return expanded_tools
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+
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+ def run(self, parameters: Dict[str, Any]) -> str:
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+ """
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+ 执行 MCP 操作
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+
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+ Args:
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+ parameters: 包含以下参数的字典
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+ - action: 操作类型 (list_tools, call_tool, list_resources, read_resource, list_prompts, get_prompt)
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+ 如果不指定action但指定了tool_name，会自动推断为call_tool
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+ - tool_name: 工具名称（call_tool 需要）
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+ - arguments: 工具参数（call_tool 需要）
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+ - uri: 资源 URI（read_resource 需要）
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+ - prompt_name: 提示词名称（get_prompt 需要）
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+ - prompt_arguments: 提示词参数（get_prompt 可选）
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+
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+ Returns:
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+ 操作结果
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+ """
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+ from hello_agents.protocols.mcp.client import MCPClient
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+
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+ timeout = getattr(self, 'timeout', 10)
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+
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|
|
+ # 智能推断action：如果没有action但有tool_name，自动设置为call_tool
|
|
|
+ action = parameters.get("action", "").lower()
|
|
|
+ if not action and "tool_name" in parameters:
|
|
|
+ action = "call_tool"
|
|
|
+ parameters["action"] = action
|
|
|
+
|
|
|
+ if not action:
|
|
|
+ return "错误：必须指定 action 参数或 tool_name 参数"
|
|
|
+
|
|
|
+ try:
|
|
|
+ # 使用增强的异步客户端
|
|
|
+ import asyncio
|
|
|
+ from hello_agents.protocols.mcp.client import MCPClient
|
|
|
+
|
|
|
+ async def run_mcp_operation():
|
|
|
+ # 根据配置选择客户端创建方式
|
|
|
+ if self.server:
|
|
|
+ # 使用内置服务器（内存传输）
|
|
|
+ client_source = self.server
|
|
|
+ else:
|
|
|
+ # 使用外部服务器命令
|
|
|
+ client_source = self.server_command
|
|
|
+
|
|
|
+ async with MCPClient(client_source, self.server_args, env=self.env) as client:
|
|
|
+ if action == "list_tools":
|
|
|
+ tools = await client.list_tools()
|
|
|
+ if not tools:
|
|
|
+ return "没有找到可用的工具"
|
|
|
+ result = f"找到 {len(tools)} 个工具:\n"
|
|
|
+ for tool in tools:
|
|
|
+ result += f"- {tool['name']}: {tool['description']}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ elif action == "call_tool":
|
|
|
+ tool_name = parameters.get("tool_name")
|
|
|
+ arguments = parameters.get("arguments", {})
|
|
|
+ if not tool_name:
|
|
|
+ return "错误：必须指定 tool_name 参数"
|
|
|
+
|
|
|
+ # todo: 修改by xc
|
|
|
+ result = await asyncio.wait_for(client.call_tool(tool_name, arguments), timeout=timeout)
|
|
|
+ # result = await client.call_tool(tool_name, arguments)
|
|
|
+ return f"工具 '{tool_name}' 执行结果:\n{result}"
|
|
|
+
|
|
|
+ elif action == "list_resources":
|
|
|
+ resources = await client.list_resources()
|
|
|
+ if not resources:
|
|
|
+ return "没有找到可用的资源"
|
|
|
+ result = f"找到 {len(resources)} 个资源:\n"
|
|
|
+ for resource in resources:
|
|
|
+ result += f"- {resource['uri']}: {resource['name']}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ elif action == "read_resource":
|
|
|
+ uri = parameters.get("uri")
|
|
|
+ if not uri:
|
|
|
+ return "错误：必须指定 uri 参数"
|
|
|
+ content = await client.read_resource(uri)
|
|
|
+ return f"资源 '{uri}' 内容:\n{content}"
|
|
|
+
|
|
|
+ elif action == "list_prompts":
|
|
|
+ prompts = await client.list_prompts()
|
|
|
+ if not prompts:
|
|
|
+ return "没有找到可用的提示词"
|
|
|
+ result = f"找到 {len(prompts)} 个提示词:\n"
|
|
|
+ for prompt in prompts:
|
|
|
+ result += f"- {prompt['name']}: {prompt['description']}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ elif action == "get_prompt":
|
|
|
+ prompt_name = parameters.get("prompt_name")
|
|
|
+ prompt_arguments = parameters.get("prompt_arguments", {})
|
|
|
+ if not prompt_name:
|
|
|
+ return "错误：必须指定 prompt_name 参数"
|
|
|
+ messages = await client.get_prompt(prompt_name, prompt_arguments)
|
|
|
+ result = f"提示词 '{prompt_name}':\n"
|
|
|
+ for msg in messages:
|
|
|
+ result += f"[{msg['role']}] {msg['content']}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ else:
|
|
|
+ return f"错误：不支持的操作 '{action}'"
|
|
|
+
|
|
|
+ # 运行异步操作
|
|
|
+ try:
|
|
|
+ # 检查是否已有运行中的事件循环
|
|
|
+ try:
|
|
|
+ loop = asyncio.get_running_loop()
|
|
|
+ # 如果有运行中的循环，在新线程中运行新的事件循环
|
|
|
+ import concurrent.futures
|
|
|
+ import threading
|
|
|
+
|
|
|
+ def run_in_thread():
|
|
|
+ # 在新线程中创建新的事件循环
|
|
|
+ new_loop = asyncio.new_event_loop()
|
|
|
+ asyncio.set_event_loop(new_loop)
|
|
|
+ try:
|
|
|
+ return new_loop.run_until_complete(run_mcp_operation())
|
|
|
+ finally:
|
|
|
+ # todo: 修改by xc
|
|
|
+ # 🔑 关键清理 1：取消所有残留任务，防止 transport 未关闭
|
|
|
+ pending = asyncio.all_tasks(new_loop)
|
|
|
+ for task in pending:
|
|
|
+ task.cancel()
|
|
|
+ if pending:
|
|
|
+ new_loop.run_until_complete(
|
|
|
+ asyncio.gather(*pending, return_exceptions=True)
|
|
|
+ )
|
|
|
+
|
|
|
+ new_loop.close()
|
|
|
+
|
|
|
+ # todo: 修改by xc
|
|
|
+ executor = concurrent.futures.ThreadPoolExecutor(max_workers=1)
|
|
|
+ try:
|
|
|
+ future = executor.submit(run_in_thread)
|
|
|
+ # 🔑 关键清理 2：设置超时，避免永久阻塞
|
|
|
+ return future.result(timeout=timeout)
|
|
|
+ finally:
|
|
|
+ # 🔑 关键清理 3：不等待残留线程，直接关闭线程池
|
|
|
+ executor.shutdown(wait=False, cancel_futures=True)
|
|
|
+
|
|
|
+ except RuntimeError:
|
|
|
+ # 没有运行中的循环，直接运行
|
|
|
+ return asyncio.run(run_mcp_operation())
|
|
|
+ except Exception as e:
|
|
|
+ return f"异步操作失败: {str(e)}"
|
|
|
+ finally:
|
|
|
+ # todo: 修改by xc
|
|
|
+ # 🔑 关键清理 4：强制回收未关闭的管道/文件描述符
|
|
|
+ gc.collect()
|
|
|
+
|
|
|
+ except Exception as e:
|
|
|
+ return f"MCP 操作失败: {str(e)}"
|
|
|
+
|
|
|
+ def get_parameters(self) -> List[ToolParameter]:
|
|
|
+ """获取工具参数定义"""
|
|
|
+ return [
|
|
|
+ ToolParameter(
|
|
|
+ name="action",
|
|
|
+ type="string",
|
|
|
+ description="操作类型: list_tools, call_tool, list_resources, read_resource, list_prompts, get_prompt",
|
|
|
+ required=True
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="tool_name",
|
|
|
+ type="string",
|
|
|
+ description="工具名称（call_tool 操作需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="arguments",
|
|
|
+ type="object",
|
|
|
+ description="工具参数（call_tool 操作需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="uri",
|
|
|
+ type="string",
|
|
|
+ description="资源 URI（read_resource 操作需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="prompt_name",
|
|
|
+ type="string",
|
|
|
+ description="提示词名称（get_prompt 操作需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="prompt_arguments",
|
|
|
+ type="object",
|
|
|
+ description="提示词参数（get_prompt 操作可选）",
|
|
|
+ required=False
|
|
|
+ )
|
|
|
+ ]
|
|
|
+
|
|
|
+
|
|
|
+class A2ATool(Tool):
|
|
|
+ """A2A (Agent-to-Agent Protocol) 工具
|
|
|
+
|
|
|
+ 连接到 A2A Agent 并进行通信。
|
|
|
+
|
|
|
+ 功能：
|
|
|
+ - 向 Agent 提问
|
|
|
+ - 获取 Agent 信息
|
|
|
+ - 发送自定义消息
|
|
|
+
|
|
|
+ 使用示例:
|
|
|
+ >>> from hello_agents.tools.builtin import A2ATool
|
|
|
+ >>> # 连接到 A2A Agent（使用默认名称）
|
|
|
+ >>> tool = A2ATool(agent_url="http://localhost:5000")
|
|
|
+ >>> # 连接到 A2A Agent（自定义名称和描述）
|
|
|
+ >>> tool = A2ATool(
|
|
|
+ ... agent_url="http://localhost:5000",
|
|
|
+ ... name="tech_expert",
|
|
|
+ ... description="技术专家，回答技术相关问题"
|
|
|
+ ... )
|
|
|
+ >>> # 提问
|
|
|
+ >>> result = tool.run({"action": "ask", "question": "计算 2+2"})
|
|
|
+ >>> # 获取信息
|
|
|
+ >>> result = tool.run({"action": "get_info"})
|
|
|
+
|
|
|
+ 注意：需要安装官方 a2a-sdk 库: pip install a2a-sdk
|
|
|
+ 详见文档: docs/chapter10/A2A_GUIDE.md
|
|
|
+ 官方仓库: https://github.com/a2aproject/a2a-python
|
|
|
+ """
|
|
|
+
|
|
|
+ def __init__(self, agent_url: str, name: str = "a2a", description: str = None):
|
|
|
+ """
|
|
|
+ 初始化 A2A 工具
|
|
|
+
|
|
|
+ Args:
|
|
|
+ agent_url: Agent URL
|
|
|
+ name: 工具名称（可选，默认为 "a2a"）
|
|
|
+ description: 工具描述（可选）
|
|
|
+ """
|
|
|
+ if description is None:
|
|
|
+ description = "连接到 A2A Agent，支持提问和获取信息。需要安装官方 a2a-sdk 库。"
|
|
|
+
|
|
|
+ super().__init__(
|
|
|
+ name=name,
|
|
|
+ description=description
|
|
|
+ )
|
|
|
+ self.agent_url = agent_url
|
|
|
+
|
|
|
+ def run(self, parameters: Dict[str, Any]) -> str:
|
|
|
+ """
|
|
|
+ 执行 A2A 操作
|
|
|
+
|
|
|
+ Args:
|
|
|
+ parameters: 包含以下参数的字典
|
|
|
+ - action: 操作类型 (ask, get_info)
|
|
|
+ - question: 问题文本（ask 需要）
|
|
|
+
|
|
|
+ Returns:
|
|
|
+ 操作结果
|
|
|
+ """
|
|
|
+ try:
|
|
|
+ from hello_agents.protocols.a2a.implementation import A2AClient, A2A_AVAILABLE
|
|
|
+ if not A2A_AVAILABLE:
|
|
|
+ return ("错误：需要安装 a2a-sdk 库\n"
|
|
|
+ "安装命令: pip install a2a-sdk\n"
|
|
|
+ "详见文档: docs/chapter10/A2A_GUIDE.md\n"
|
|
|
+ "官方仓库: https://github.com/a2aproject/a2a-python")
|
|
|
+ except ImportError:
|
|
|
+ return ("错误：无法导入 A2A 模块\n"
|
|
|
+ "安装命令: pip install a2a-sdk\n"
|
|
|
+ "详见文档: docs/chapter10/A2A_GUIDE.md\n"
|
|
|
+ "官方仓库: https://github.com/a2aproject/a2a-python")
|
|
|
+
|
|
|
+ action = parameters.get("action", "").lower()
|
|
|
+
|
|
|
+ if not action:
|
|
|
+ return "错误：必须指定 action 参数"
|
|
|
+
|
|
|
+ try:
|
|
|
+ client = A2AClient(self.agent_url)
|
|
|
+
|
|
|
+ if action == "ask":
|
|
|
+ question = parameters.get("question")
|
|
|
+ if not question:
|
|
|
+ return "错误：必须指定 question 参数"
|
|
|
+ response = client.ask(question)
|
|
|
+ return f"Agent 回答:\n{response}"
|
|
|
+
|
|
|
+ elif action == "get_info":
|
|
|
+ info = client.get_info()
|
|
|
+ result = "Agent 信息:\n"
|
|
|
+ for key, value in info.items():
|
|
|
+ result += f"- {key}: {value}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ else:
|
|
|
+ return f"错误：不支持的操作 '{action}'"
|
|
|
+
|
|
|
+ except Exception as e:
|
|
|
+ return f"A2A 操作失败: {str(e)}"
|
|
|
+
|
|
|
+ def get_parameters(self) -> List[ToolParameter]:
|
|
|
+ """获取工具参数定义"""
|
|
|
+ return [
|
|
|
+ ToolParameter(
|
|
|
+ name="action",
|
|
|
+ type="string",
|
|
|
+ description="操作类型: ask(提问), get_info(获取信息)",
|
|
|
+ required=True
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="question",
|
|
|
+ type="string",
|
|
|
+ description="问题文本（ask 操作需要）",
|
|
|
+ required=False
|
|
|
+ )
|
|
|
+ ]
|
|
|
+
|
|
|
+
|
|
|
+class ANPTool(Tool):
|
|
|
+ """ANP (Agent Network Protocol) 工具
|
|
|
+
|
|
|
+ 提供智能体网络管理功能，包括服务发现、节点管理和消息路由。
|
|
|
+ 这是一个概念性实现，用于演示 Agent 网络管理的核心理念。
|
|
|
+
|
|
|
+ 功能：
|
|
|
+ - 注册和发现服务
|
|
|
+ - 添加和管理网络节点
|
|
|
+ - 消息路由
|
|
|
+ - 网络统计
|
|
|
+
|
|
|
+ 使用示例:
|
|
|
+ >>> from hello_agents.tools.builtin import ANPTool
|
|
|
+ >>> tool = ANPTool()
|
|
|
+ >>> # 注册服务
|
|
|
+ >>> result = tool.run({
|
|
|
+ ... "action": "register_service",
|
|
|
+ ... "service_id": "calc-1",
|
|
|
+ ... "service_type": "calculator",
|
|
|
+ ... "endpoint": "http://localhost:5001"
|
|
|
+ ... })
|
|
|
+ >>> # 发现服务
|
|
|
+ >>> result = tool.run({
|
|
|
+ ... "action": "discover_services",
|
|
|
+ ... "service_type": "calculator"
|
|
|
+ ... })
|
|
|
+ >>> # 添加节点
|
|
|
+ >>> result = tool.run({
|
|
|
+ ... "action": "add_node",
|
|
|
+ ... "node_id": "agent-1",
|
|
|
+ ... "endpoint": "http://localhost:5001"
|
|
|
+ ... })
|
|
|
+
|
|
|
+ 注意：这是概念性实现，不需要额外依赖
|
|
|
+ 详见文档: docs/chapter10/ANP_CONCEPTS.md
|
|
|
+ """
|
|
|
+
|
|
|
+ def __init__(self, name: str = "anp", description: str = None, discovery=None, network=None):
|
|
|
+ """初始化 ANP 工具
|
|
|
+
|
|
|
+ Args:
|
|
|
+ name: 工具名称
|
|
|
+ description: 工具描述
|
|
|
+ discovery: 可选的 ANPDiscovery 实例，如果不提供则创建新实例
|
|
|
+ network: 可选的 ANPNetwork 实例，如果不提供则创建新实例
|
|
|
+ """
|
|
|
+ if description is None:
|
|
|
+ description = "智能体网络管理工具，支持服务发现、节点管理和消息路由。概念性实现。"
|
|
|
+
|
|
|
+ super().__init__(
|
|
|
+ name=name,
|
|
|
+ description=description
|
|
|
+ )
|
|
|
+ from hello_agents.protocols.anp.implementation import ANPDiscovery, ANPNetwork
|
|
|
+ self._discovery = discovery if discovery is not None else ANPDiscovery()
|
|
|
+ self._network = network if network is not None else ANPNetwork()
|
|
|
+
|
|
|
+ def run(self, parameters: Dict[str, Any]) -> str:
|
|
|
+ """
|
|
|
+ 执行 ANP 操作
|
|
|
+
|
|
|
+ Args:
|
|
|
+ parameters: 包含以下参数的字典
|
|
|
+ - action: 操作类型 (register_service, discover_services, add_node, route_message, get_stats)
|
|
|
+ - service_id, service_type, endpoint: 服务信息（register_service 需要）
|
|
|
+ - node_id, endpoint: 节点信息（add_node 需要）
|
|
|
+ - from_node, to_node, message: 路由信息（route_message 需要）
|
|
|
+
|
|
|
+ Returns:
|
|
|
+ 操作结果
|
|
|
+ """
|
|
|
+ from hello_agents.protocols.anp.implementation import ServiceInfo
|
|
|
+
|
|
|
+ action = parameters.get("action", "").lower()
|
|
|
+
|
|
|
+ if not action:
|
|
|
+ return "错误：必须指定 action 参数"
|
|
|
+
|
|
|
+ try:
|
|
|
+ if action == "register_service":
|
|
|
+ service_id = parameters.get("service_id")
|
|
|
+ service_type = parameters.get("service_type")
|
|
|
+ endpoint = parameters.get("endpoint")
|
|
|
+ metadata = parameters.get("metadata", {})
|
|
|
+
|
|
|
+ if not all([service_id, service_type, endpoint]):
|
|
|
+ return "错误：必须指定 service_id, service_type 和 endpoint 参数"
|
|
|
+
|
|
|
+ service = ServiceInfo(service_id, service_type, endpoint, metadata)
|
|
|
+ self._discovery.register_service(service)
|
|
|
+ return f"✅ 已注册服务 '{service_id}'"
|
|
|
+
|
|
|
+ elif action == "unregister_service":
|
|
|
+ service_id = parameters.get("service_id")
|
|
|
+ if not service_id:
|
|
|
+ return "错误：必须指定 service_id 参数"
|
|
|
+
|
|
|
+ # 使用 ANPDiscovery 的 unregister_service 方法
|
|
|
+ success = self._discovery.unregister_service(service_id)
|
|
|
+
|
|
|
+ if success:
|
|
|
+ return f"✅ 已注销服务 '{service_id}'"
|
|
|
+ else:
|
|
|
+ return f"错误：服务 '{service_id}' 不存在"
|
|
|
+
|
|
|
+ elif action == "discover_services":
|
|
|
+ service_type = parameters.get("service_type")
|
|
|
+ services = self._discovery.discover_services(service_type)
|
|
|
+
|
|
|
+ if not services:
|
|
|
+ return "没有找到服务"
|
|
|
+
|
|
|
+ result = f"找到 {len(services)} 个服务:\n\n"
|
|
|
+ for service in services:
|
|
|
+ result += f"服务ID: {service.service_id}\n"
|
|
|
+ result += f" 名称: {service.service_name}\n"
|
|
|
+ result += f" 类型: {service.service_type}\n"
|
|
|
+ result += f" 端点: {service.endpoint}\n"
|
|
|
+ if service.capabilities:
|
|
|
+ result += f" 能力: {', '.join(service.capabilities)}\n"
|
|
|
+ if service.metadata:
|
|
|
+ result += f" 元数据: {service.metadata}\n"
|
|
|
+ result += "\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ elif action == "add_node":
|
|
|
+ node_id = parameters.get("node_id")
|
|
|
+ endpoint = parameters.get("endpoint")
|
|
|
+ metadata = parameters.get("metadata", {})
|
|
|
+
|
|
|
+ if not all([node_id, endpoint]):
|
|
|
+ return "错误：必须指定 node_id 和 endpoint 参数"
|
|
|
+
|
|
|
+ self._network.add_node(node_id, endpoint, metadata)
|
|
|
+ return f"✅ 已添加节点 '{node_id}'"
|
|
|
+
|
|
|
+ elif action == "route_message":
|
|
|
+ from_node = parameters.get("from_node")
|
|
|
+ to_node = parameters.get("to_node")
|
|
|
+ message = parameters.get("message", {})
|
|
|
+
|
|
|
+ if not all([from_node, to_node]):
|
|
|
+ return "错误：必须指定 from_node 和 to_node 参数"
|
|
|
+
|
|
|
+ path = self._network.route_message(from_node, to_node, message)
|
|
|
+ if path:
|
|
|
+ return f"消息路由路径: {' -> '.join(path)}"
|
|
|
+ else:
|
|
|
+ return "无法找到路由路径"
|
|
|
+
|
|
|
+ elif action == "get_stats":
|
|
|
+ stats = self._network.get_network_stats()
|
|
|
+ result = "网络统计:\n"
|
|
|
+ for key, value in stats.items():
|
|
|
+ result += f"- {key}: {value}\n"
|
|
|
+ return result
|
|
|
+
|
|
|
+ else:
|
|
|
+ return f"错误：不支持的操作 '{action}'"
|
|
|
+
|
|
|
+ except Exception as e:
|
|
|
+ return f"ANP 操作失败: {str(e)}"
|
|
|
+
|
|
|
+ def get_parameters(self) -> List[ToolParameter]:
|
|
|
+ """获取工具参数定义"""
|
|
|
+ return [
|
|
|
+ ToolParameter(
|
|
|
+ name="action",
|
|
|
+ type="string",
|
|
|
+ description="操作类型: register_service, unregister_service, discover_services, add_node, route_message, get_stats",
|
|
|
+ required=True
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="service_id",
|
|
|
+ type="string",
|
|
|
+ description="服务 ID（register_service, unregister_service 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="service_type",
|
|
|
+ type="string",
|
|
|
+ description="服务类型（register_service 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="endpoint",
|
|
|
+ type="string",
|
|
|
+ description="端点地址（register_service, add_node 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="node_id",
|
|
|
+ type="string",
|
|
|
+ description="节点 ID（add_node 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="from_node",
|
|
|
+ type="string",
|
|
|
+ description="源节点 ID（route_message 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="to_node",
|
|
|
+ type="string",
|
|
|
+ description="目标节点 ID（route_message 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="message",
|
|
|
+ type="object",
|
|
|
+ description="消息内容（route_message 需要）",
|
|
|
+ required=False
|
|
|
+ ),
|
|
|
+ ToolParameter(
|
|
|
+ name="metadata",
|
|
|
+ type="object",
|
|
|
+ description="元数据（register_service, add_node 可选）",
|
|
|
+ required=False
|
|
|
+ )
|
|
|
+ ]
|
|
|
+
|
jjyaoao