310 lines
10 KiB
TypeScript
310 lines
10 KiB
TypeScript
import os from 'node:os'
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import path from 'node:path'
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import { isLinux, isMac, isWin } from '@main/constant'
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import { createInMemoryMCPServer } from '@main/mcpServers/factory'
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import { makeSureDirExists } from '@main/utils'
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import { getBinaryName, getBinaryPath } from '@main/utils/process'
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import { Client } from '@modelcontextprotocol/sdk/client/index.js'
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import { SSEClientTransport } from '@modelcontextprotocol/sdk/client/sse.js'
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import { getDefaultEnvironment, StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js'
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import { InMemoryTransport } from '@modelcontextprotocol/sdk/inMemory'
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import { nanoid } from '@reduxjs/toolkit'
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import { MCPServer, MCPTool } from '@types'
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import { app } from 'electron'
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import Logger from 'electron-log'
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import { CacheService } from './CacheService'
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class McpService {
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private clients: Map<string, Client> = new Map()
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private getServerKey(server: MCPServer): string {
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return JSON.stringify({
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baseUrl: server.baseUrl,
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command: server.command,
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args: server.args,
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registryUrl: server.registryUrl,
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env: server.env,
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id: server.id
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})
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}
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constructor() {
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this.initClient = this.initClient.bind(this)
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this.listTools = this.listTools.bind(this)
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this.callTool = this.callTool.bind(this)
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this.closeClient = this.closeClient.bind(this)
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this.removeServer = this.removeServer.bind(this)
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this.restartServer = this.restartServer.bind(this)
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this.stopServer = this.stopServer.bind(this)
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}
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async initClient(server: MCPServer): Promise<Client> {
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const serverKey = this.getServerKey(server)
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// Check if we already have a client for this server configuration
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const existingClient = this.clients.get(serverKey)
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if (existingClient) {
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// Check if the existing client is still connected
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const pingResult = await existingClient.ping()
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Logger.info(`[MCP] Ping result for ${server.name}:`, pingResult)
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// If the ping fails, remove the client from the cache
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// and create a new one
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if (!pingResult) {
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this.clients.delete(serverKey)
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} else {
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return existingClient
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}
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}
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// Create new client instance for each connection
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const client = new Client({ name: 'Cherry Studio', version: app.getVersion() }, { capabilities: {} })
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const args = [...(server.args || [])]
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let transport: StdioClientTransport | SSEClientTransport | InMemoryTransport
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try {
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// Create appropriate transport based on configuration
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if (server.type === 'inMemory') {
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Logger.info(`[MCP] Using in-memory transport for server: ${server.name}`)
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const [clientTransport, serverTransport] = InMemoryTransport.createLinkedPair()
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// start the in-memory server with the given name and environment variables
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const inMemoryServer = createInMemoryMCPServer(server.name, args, server.env || {})
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try {
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await inMemoryServer.connect(serverTransport)
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Logger.info(`[MCP] In-memory server started: ${server.name}`)
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} catch (error) {
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Logger.error(`[MCP] Error starting in-memory server: ${error}`)
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throw new Error(`Failed to start in-memory server: ${error}`)
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}
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// set the client transport to the client
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transport = clientTransport
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} else if (server.baseUrl) {
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transport = new SSEClientTransport(new URL(server.baseUrl))
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} else if (server.command) {
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let cmd = server.command
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if (server.command === 'npx' || server.command === 'bun' || server.command === 'bunx') {
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cmd = await getBinaryPath('bun')
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Logger.info(`[MCP] Using command: ${cmd}`)
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// add -x to args if args exist
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if (args && args.length > 0) {
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if (!args.includes('-y')) {
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!args.includes('-y') && args.unshift('-y')
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}
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if (!args.includes('x')) {
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args.unshift('x')
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}
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}
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if (server.registryUrl) {
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server.env = {
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...server.env,
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NPM_CONFIG_REGISTRY: server.registryUrl
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}
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// if the server name is mcp-auto-install, use the mcp-registry.json file in the bin directory
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if (server.name === 'mcp-auto-install') {
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const binPath = await getBinaryPath()
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makeSureDirExists(binPath)
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server.env.MCP_REGISTRY_PATH = path.join(binPath, 'mcp-registry.json')
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}
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}
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} else if (server.command === 'uvx' || server.command === 'uv') {
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cmd = await getBinaryPath(server.command)
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if (server.registryUrl) {
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server.env = {
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...server.env,
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UV_DEFAULT_INDEX: server.registryUrl,
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PIP_INDEX_URL: server.registryUrl
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}
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}
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}
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Logger.info(`[MCP] Starting server with command: ${cmd} ${args ? args.join(' ') : ''}`)
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// Logger.info(`[MCP] Environment variables for server:`, server.env)
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transport = new StdioClientTransport({
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command: cmd,
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args,
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env: {
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...getDefaultEnvironment(),
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PATH: this.getEnhancedPath(process.env.PATH || ''),
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...server.env
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}
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})
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} else {
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throw new Error('Either baseUrl or command must be provided')
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}
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await client.connect(transport)
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// Store the new client in the cache
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this.clients.set(serverKey, client)
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Logger.info(`[MCP] Activated server: ${server.name}`)
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return client
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} catch (error: any) {
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Logger.error(`[MCP] Error activating server ${server.name}:`, error)
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throw error
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}
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}
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async closeClient(serverKey: string) {
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const client = this.clients.get(serverKey)
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if (client) {
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// Remove the client from the cache
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await client.close()
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Logger.info(`[MCP] Closed server: ${serverKey}`)
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this.clients.delete(serverKey)
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CacheService.remove(`mcp:list_tool:${serverKey}`)
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Logger.info(`[MCP] Cleared cache for server: ${serverKey}`)
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} else {
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Logger.warn(`[MCP] No client found for server: ${serverKey}`)
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}
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}
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async stopServer(_: Electron.IpcMainInvokeEvent, server: MCPServer) {
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const serverKey = this.getServerKey(server)
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Logger.info(`[MCP] Stopping server: ${server.name}`)
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await this.closeClient(serverKey)
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}
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async removeServer(_: Electron.IpcMainInvokeEvent, server: MCPServer) {
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const serverKey = this.getServerKey(server)
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const existingClient = this.clients.get(serverKey)
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if (existingClient) {
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await this.closeClient(serverKey)
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}
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}
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async restartServer(_: Electron.IpcMainInvokeEvent, server: MCPServer) {
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Logger.info(`[MCP] Restarting server: ${server.name}`)
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const serverKey = this.getServerKey(server)
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await this.closeClient(serverKey)
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await this.initClient(server)
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}
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async listTools(_: Electron.IpcMainInvokeEvent, server: MCPServer) {
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const client = await this.initClient(server)
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const serverKey = this.getServerKey(server)
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const cacheKey = `mcp:list_tool:${serverKey}`
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if (CacheService.has(cacheKey)) {
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Logger.info(`[MCP] Tools from ${server.name} loaded from cache`)
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const cachedTools = CacheService.get<MCPTool[]>(cacheKey)
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if (cachedTools && cachedTools.length > 0) {
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return cachedTools
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}
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}
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Logger.info(`[MCP] Listing tools for server: ${server.name}`)
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const { tools } = await client.listTools()
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const serverTools: MCPTool[] = []
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tools.map((tool: any) => {
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const serverTool: MCPTool = {
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...tool,
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id: `f${nanoid()}`,
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serverId: server.id,
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serverName: server.name
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}
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serverTools.push(serverTool)
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})
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CacheService.set(cacheKey, serverTools, 5 * 60 * 1000)
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return serverTools
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}
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/**
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* Call a tool on an MCP server
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*/
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public async callTool(
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_: Electron.IpcMainInvokeEvent,
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{ server, name, args }: { server: MCPServer; name: string; args: any }
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): Promise<any> {
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try {
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Logger.info('[MCP] Calling:', server.name, name, args)
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const client = await this.initClient(server)
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const result = await client.callTool({ name, arguments: args })
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return result
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} catch (error) {
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Logger.error(`[MCP] Error calling tool ${name} on ${server.name}:`, error)
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throw error
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}
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}
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public async getInstallInfo() {
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const dir = path.join(os.homedir(), '.cherrystudio', 'bin')
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const uvName = await getBinaryName('uv')
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const bunName = await getBinaryName('bun')
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const uvPath = path.join(dir, uvName)
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const bunPath = path.join(dir, bunName)
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return { dir, uvPath, bunPath }
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}
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/**
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* Get enhanced PATH including common tool locations
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*/
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private getEnhancedPath(originalPath: string): string {
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// 将原始 PATH 按分隔符分割成数组
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const pathSeparator = process.platform === 'win32' ? ';' : ':'
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const existingPaths = new Set(originalPath.split(pathSeparator).filter(Boolean))
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const homeDir = process.env.HOME || process.env.USERPROFILE || ''
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// 定义要添加的新路径
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const newPaths: string[] = []
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if (isMac) {
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newPaths.push(
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'/bin',
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'/usr/bin',
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'/usr/local/bin',
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'/usr/local/sbin',
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'/opt/homebrew/bin',
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'/opt/homebrew/sbin',
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'/usr/local/opt/node/bin',
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`${homeDir}/.nvm/current/bin`,
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`${homeDir}/.npm-global/bin`,
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`${homeDir}/.yarn/bin`,
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`${homeDir}/.cargo/bin`,
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`${homeDir}/.cherrystudio/bin`,
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'/opt/local/bin'
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)
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}
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if (isLinux) {
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newPaths.push(
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'/bin',
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'/usr/bin',
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'/usr/local/bin',
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`${homeDir}/.nvm/current/bin`,
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`${homeDir}/.npm-global/bin`,
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`${homeDir}/.yarn/bin`,
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`${homeDir}/.cargo/bin`,
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`${homeDir}/.cherrystudio/bin`,
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'/snap/bin'
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)
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}
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if (isWin) {
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newPaths.push(
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`${process.env.APPDATA}\\npm`,
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`${homeDir}\\AppData\\Local\\Yarn\\bin`,
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`${homeDir}\\.cargo\\bin`,
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`${homeDir}\\.cherrystudio\\bin`
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)
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}
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// 只添加不存在的路径
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newPaths.forEach((path) => {
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if (path && !existingPaths.has(path)) {
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existingPaths.add(path)
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}
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})
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// 转换回字符串
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return Array.from(existingPaths).join(pathSeparator)
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}
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}
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export default new McpService()
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