HDFS MCP Server

HDFS MCP Server

A Model Context Protocol server that enables interaction with Hadoop Distributed File System, allowing operations like listing, reading, writing, and managing HDFS files and directories.

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README

HDFS MCP 服务器

这是一个真正的Model Context Protocol (MCP) 服务器,用于管理Hadoop分布式文件系统。它实现了MCP标准,可以与支持MCP的客户端(如Claude Desktop)集成。

项目结构

src/
├── index.ts              # 主入口文件
├── interface/
│   └── types.ts         # 类型定义
├── connection/
│   └── HDFSConnection.ts # HDFS连接管理
├── server/
│   └── HDFSMCPServer.ts # MCP服务器实现
├── tools/
│   └── HDFSTools.ts     # HDFS操作工具
└── utils/
    └── HDFSUtils.ts     # 工具函数

功能

  • 列出HDFS目录中的文件
  • 读取HDFS文件内容
  • 写入内容到HDFS文件
  • 删除HDFS文件或目录
  • 创建HDFS目录
  • 获取HDFS文件或目录信息
  • 测试HDFS连接

安装

npm install

构建

npm run build

运行

npm start

配置

服务器使用以下HDFS配置:

  • NameService: haclusterdev
  • NameNodes: n1, n2
  • RPC地址:
    • n1: 1.hadoopdev.com:8020
    • n2: 2.hadoopdev.com:8020
  • HTTP地址:
    • n1: 1.hadoopdev.com:8090
    • n2: 2.hadoopdev.com:8090

环境变量配置

可以通过环境变量自定义配置:

export HDFS_NAMESERVICES=haclusterdev
export HDFS_NAMENODES=n1,n2
export HDFS_RPC_N1=1.hadoopdev.com:8020
export HDFS_RPC_N2=2.hadoopdev.com:8020
export HDFS_HTTP_N1=1.hadoopdev.com:8090
export HDFS_HTTP_N2=2.hadoopdev.com:8090
export HDFS_USERNAME=hadoop
export HDFS_PASSWORD=your_password

MCP 工具

服务器实现了以下MCP工具:

  1. hdfs_list_files - 列出HDFS目录内容
  2. hdfs_read_file - 读取HDFS文件内容
  3. hdfs_write_file - 写入内容到HDFS文件
  4. hdfs_delete_file - 删除HDFS文件或目录
  5. hdfs_create_directory - 创建HDFS目录
  6. hdfs_get_file_info - 获取HDFS文件信息
  7. hdfs_test_connection - 测试HDFS连接

使用方法

作为MCP服务器运行

  1. 构建项目:

    npm run build
    
  2. 启动MCP服务器:

    npm start
    
  3. 在支持MCP的客户端中配置:

    {
      "mcpServers": {
        "hdfs": {
          "command": "node",
          "args": ["dist/index.js"]
        }
      }
    }
    

作为独立客户端使用

import { HDFSMCPServer } from './dist/server/HDFSMCPServer.js';
import { HDFSConfig } from './dist/interface/types.js';

const config: HDFSConfig = {
  nameservices: 'haclusterdev',
  namenodes: ['n1', 'n2'],
  rpcAddresses: {
    n1: '1.hadoopdev.com:8020',
    n2: '2.hadoopdev.com:8020'
  },
  httpAddresses: {
    n1: '1.hadoopdev.com:8090',
    n2: '2.hadoopdev.com:8090'
  },
  sharedEditsDir: 'qjournal://1.hadoopdev.com:8485;2.hadoopdev.com:8485;3.hadoopdev.com:8485/haclusterdev',
  failoverProvider: 'org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider'
};

const server = new HDFSMCPServer(config);
await server.initialize();

特性

  • 高可用性支持: 支持HDFS HA集群,自动故障转移
  • 重试机制: 网络错误时自动重试
  • 路径验证: 自动验证和规范化HDFS路径
  • 详细日志: 完整的操作日志记录
  • 错误处理: 友好的错误信息和处理
  • 类型安全: 完整的TypeScript类型定义

开发

# 开发模式运行
npm run dev

# 运行测试
npm test

许可证

MIT

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