Browser MCP Server

/** * MCP服务器处理器实现 */ import { IMCPServerHandler, IToolRegistry, ToolExecutionContext } from '../interfaces/mcp.js'; import { MCPProtocolError, ToolExecutionError } from '../errors/index.js'; import { v4 as uuidv4 } from 'uuid'; export class MCPServerHandler implements IMCPServerHandler { private toolRegistry: IToolRegistry; private status: 'stopped' | 'starting' | 'running' | 'stopping' = 'stopped'; constructor(toolRegistry: IToolRegistry) { this.toolRegistry = toolRegistry; } /** * 初始化MCP服务器 */ async initialize(): Promise<void> { this.status = 'starting'; console.log('MCP服务器处理器初始化中...'); // 这里可以添加其他初始化逻辑 this.status = 'running'; console.log('MCP服务器处理器初始化完成'); } /** * 启动服务器 */ async start(): Promise<void> { if (this.status === 'running') { console.log('MCP服务器已经在运行中'); return; } this.status = 'starting'; console.log('MCP服务器启动中...'); // 这里可以添加启动逻辑 this.status = 'running'; console.log('MCP服务器已启动'); } /** * 停止服务器 */ async stop(): Promise<void> { if (this.status === 'stopped') { console.log('MCP服务器已经停止'); return; } this.status = 'stopping'; console.log('MCP服务器停止中...'); // 这里可以添加停止逻辑 this.status = 'stopped'; console.log('MCP服务器已停止'); } /** * 处理工具调用 */ async handleToolCall(name: string, args: any): Promise<any> { if (this.status !== 'running') { throw new MCPProtocolError(`MCP服务器未运行，当前状态: ${this.status}`); } const tool = this.toolRegistry.getTool(name); if (!tool) { throw new MCPProtocolError(`找不到工具: ${name}`); } const context: ToolExecutionContext = { toolName: name, args, timestamp: new Date(), requestId: uuidv4() }; try { console.log(`执行工具: ${name}`, args); const result = await tool.execute(args, context); console.log(`工具执行成功: ${name}`); return result; } catch (error) { console.error(`工具执行失败: ${name}`, error); if (error instanceof ToolExecutionError || error instanceof MCPProtocolError) { throw error; } throw new ToolExecutionError(`执行工具 ${name} 失败: ${(error as Error).message}`, error as Error); } } /** * 获取服务器状态 */ getStatus(): 'stopped' | 'starting' | 'running' | 'stopping' { return this.status; } }