MCP Console Automation Server

import { spawn, ChildProcess } from 'child_process'; import { BaseProtocol } from '../core/BaseProtocol.js'; import { ConsoleSession, SessionOptions, ConsoleType, ConsoleOutput, } from '../types/index.js'; import { ProtocolCapabilities, SessionState, ErrorContext, ProtocolHealthStatus, ErrorRecoveryResult, ResourceUsage, } from '../core/IProtocol.js'; // Go Protocol connection options interface GoConnectionOptions extends SessionOptions { goPath?: string; goRoot?: string; goVersion?: string; module?: string; packagePath?: string; buildFlags?: string[]; runFlags?: string[]; testFlags?: string[]; sourceFile?: string; mainPackage?: string; buildTags?: string[]; cgEnabled?: boolean; goOs?: string; goArch?: string; environment?: Record<string, string>; enableRace?: boolean; enablePprof?: boolean; pprofPort?: number; workspaceMode?: boolean; vendorMode?: boolean; modMode?: 'readonly' | 'vendor' | 'mod'; enableDebug?: boolean; debugPort?: number; delveDebugger?: boolean; } /** * Go (Golang) Protocol Implementation * * Provides Go development environment console access through go command * Supports building, running, testing, modules, workspaces, debugging with Delve, and profiling */ export class GoLangProtocol extends BaseProtocol { public readonly type: ConsoleType = 'golang'; public readonly capabilities: ProtocolCapabilities; private goProcesses = new Map<string, ChildProcess>(); // Compatibility property for old ProtocolFactory interface public get healthStatus(): ProtocolHealthStatus { return { isHealthy: this.isInitialized, lastChecked: new Date(), errors: [], warnings: [], metrics: { activeSessions: this.sessions.size, totalSessions: this.sessions.size, averageLatency: 0, successRate: 100, uptime: 0, }, dependencies: {}, }; } constructor() { super('golang'); this.capabilities = { supportsStreaming: true, supportsFileTransfer: false, supportsX11Forwarding: false, supportsPortForwarding: false, supportsAuthentication: false, supportsEncryption: false, supportsCompression: false, supportsMultiplexing: false, supportsKeepAlive: true, supportsReconnection: true, supportsBinaryData: false, supportsCustomEnvironment: true, supportsWorkingDirectory: true, supportsSignals: true, supportsResizing: false, supportsPTY: true, maxConcurrentSessions: 25, defaultTimeout: 30000, supportedEncodings: ['utf-8'], supportedAuthMethods: [], platformSupport: { windows: true, linux: true, macos: true, freebsd: true, }, }; } async initialize(): Promise<void> { if (this.isInitialized) return; try { // Check if Go is available await this.checkGoAvailability(); this.isInitialized = true; this.logger.info('Go protocol initialized with production features'); } catch (error: any) { this.logger.error('Failed to initialize Go protocol', error); throw error; } } async createSession(options: SessionOptions): Promise<ConsoleSession> { const sessionId = `go-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`; return await this.createSessionWithTypeDetection(sessionId, options); } async dispose(): Promise<void> { await this.cleanup(); } async executeCommand( sessionId: string, command: string, args?: string[] ): Promise<void> { const fullCommand = args && args.length > 0 ? `${command} ${args.join(' ')}` : command; await this.sendInput(sessionId, fullCommand + '\n'); } async sendInput(sessionId: string, input: string): Promise<void> { const goProcess = this.goProcesses.get(sessionId); const session = this.sessions.get(sessionId); if (!goProcess || !goProcess.stdin || !session) { throw new Error(`No active Go session: ${sessionId}`); } goProcess.stdin.write(input); session.lastActivity = new Date(); this.emit('input-sent', { sessionId, input, timestamp: new Date(), }); this.logger.debug( `Sent input to Go session ${sessionId}: ${input.substring(0, 100)}` ); } async closeSession(sessionId: string): Promise<void> { try { const goProcess = this.goProcesses.get(sessionId); if (goProcess) { // Try graceful shutdown first goProcess.kill('SIGTERM'); // Force kill after timeout setTimeout(() => { if (goProcess && !goProcess.killed) { goProcess.kill('SIGKILL'); } }, 5000); this.goProcesses.delete(sessionId); } // Clean up base protocol session this.sessions.delete(sessionId); this.logger.info(`Go session ${sessionId} closed`); this.emit('session-closed', sessionId); } catch (error) { this.logger.error(`Error closing Go session ${sessionId}:`, error); throw error; } } async doCreateSession( sessionId: string, options: SessionOptions, sessionState: SessionState ): Promise<ConsoleSession> { if (!this.isInitialized) { await this.initialize(); } const goOptions = options as GoConnectionOptions; // Build Go command const goCommand = this.buildGoCommand(goOptions); // Spawn Go process const goProcess = spawn(goCommand[0], goCommand.slice(1), { stdio: ['pipe', 'pipe', 'pipe'], cwd: options.cwd || process.cwd(), env: { ...process.env, ...this.buildEnvironment(goOptions), ...options.env, }, }); // Set up output handling goProcess.stdout?.on('data', (data) => { const output: ConsoleOutput = { sessionId, type: 'stdout', data: data.toString(), timestamp: new Date(), }; this.addToOutputBuffer(sessionId, output); }); goProcess.stderr?.on('data', (data) => { const output: ConsoleOutput = { sessionId, type: 'stderr', data: data.toString(), timestamp: new Date(), }; this.addToOutputBuffer(sessionId, output); }); goProcess.on('error', (error) => { this.logger.error(`Go process error for session ${sessionId}:`, error); this.emit('session-error', { sessionId, error }); }); goProcess.on('close', (code) => { this.logger.info( `Go process closed for session ${sessionId} with code ${code}` ); this.markSessionComplete(sessionId, code || 0); }); // Store the process this.goProcesses.set(sessionId, goProcess); // Create session object const session: ConsoleSession = { id: sessionId, command: goCommand[0], args: goCommand.slice(1), cwd: options.cwd || process.cwd(), env: { ...process.env, ...this.buildEnvironment(goOptions), ...options.env, }, createdAt: new Date(), lastActivity: new Date(), status: 'running', type: this.type, streaming: options.streaming, executionState: 'idle', activeCommands: new Map(), pid: goProcess.pid, }; this.sessions.set(sessionId, session); this.logger.info( `Go session ${sessionId} created for ${goOptions.sourceFile || goOptions.packagePath || goOptions.module || 'Go application'}` ); this.emit('session-created', { sessionId, type: 'golang', session }); return session; } // Override getOutput to satisfy old ProtocolFactory interface (returns string) async getOutput(sessionId: string, since?: Date): Promise<any> { const outputs = await super.getOutput(sessionId, since); return outputs.map((output) => output.data).join(''); } // Missing IProtocol methods for compatibility getAllSessions(): ConsoleSession[] { return Array.from(this.sessions.values()); } getActiveSessions(): ConsoleSession[] { return Array.from(this.sessions.values()).filter( (session) => session.status === 'running' ); } getSessionCount(): number { return this.sessions.size; } async getSessionState(sessionId: string): Promise<SessionState> { const session = this.sessions.get(sessionId); if (!session) { throw new Error(`Session ${sessionId} not found`); } return { sessionId, status: session.status, isOneShot: true, // Go commands are typically one-shot unless running a server isPersistent: false, createdAt: session.createdAt, lastActivity: session.lastActivity, pid: session.pid, metadata: {}, }; } async handleError( error: Error, context: ErrorContext ): Promise<ErrorRecoveryResult> { this.logger.error( `Error in Go session ${context.sessionId}: ${error.message}` ); return { recovered: false, strategy: 'none', attempts: 0, duration: 0, error: error.message, }; } async recoverSession(sessionId: string): Promise<boolean> { const goProcess = this.goProcesses.get(sessionId); return (goProcess && !goProcess.killed) || false; } getResourceUsage(): ResourceUsage { const memUsage = process.memoryUsage(); const cpuUsage = process.cpuUsage(); return { memory: { used: memUsage.heapUsed, available: memUsage.heapTotal, peak: memUsage.heapTotal, }, cpu: { usage: cpuUsage.user + cpuUsage.system, load: [0, 0, 0], }, network: { bytesIn: 0, bytesOut: 0, connectionsActive: this.goProcesses.size, }, storage: { bytesRead: 0, bytesWritten: 0, }, sessions: { active: this.sessions.size, total: this.sessions.size, peak: this.sessions.size, }, }; } async getHealthStatus(): Promise<ProtocolHealthStatus> { const baseStatus = await super.getHealthStatus(); try { await this.checkGoAvailability(); return { ...baseStatus, dependencies: { go: { available: true }, }, }; } catch (error) { return { ...baseStatus, isHealthy: false, errors: [...baseStatus.errors, `Go not available: ${error}`], dependencies: { go: { available: false }, }, }; } } private async checkGoAvailability(): Promise<void> { return new Promise((resolve, reject) => { const testProcess = spawn('go', ['version'], { stdio: 'pipe' }); testProcess.on('close', (code) => { if (code === 0) { resolve(); } else { reject(new Error('Go toolchain not found. Please install Go.')); } }); testProcess.on('error', () => { reject(new Error('Go toolchain not found. Please install Go.')); }); }); } private buildGoCommand(options: GoConnectionOptions): string[] { const command = []; // Delve debugger for debugging if (options.enableDebug && options.delveDebugger && options.debugPort) { command.push('dlv', 'debug'); if (options.packagePath) { command.push(options.packagePath); } command.push( '--headless', '--listen', `:${options.debugPort}`, '--api-version=2' ); return command; } // Go executable if (options.goPath && options.goPath.includes('go')) { command.push(options.goPath); } else { command.push('go'); } // Determine the Go subcommand if (options.sourceFile) { // Running a single Go file command.push('run'); // Build flags for run if (options.buildFlags) { command.push(...options.buildFlags); } // Race detection if (options.enableRace) { command.push('-race'); } // Build tags if (options.buildTags) { command.push('-tags', options.buildTags.join(',')); } command.push(options.sourceFile); } else if (options.packagePath && options.packagePath.includes('test')) { // Running tests command.push('test'); // Test flags if (options.testFlags) { command.push(...options.testFlags); } // Race detection for tests if (options.enableRace) { command.push('-race'); } command.push(options.packagePath); } else if (options.mainPackage || options.packagePath) { // Running a package command.push('run'); // Build flags if (options.buildFlags) { command.push(...options.buildFlags); } // Race detection if (options.enableRace) { command.push('-race'); } // Build tags if (options.buildTags) { command.push('-tags', options.buildTags.join(',')); } command.push(options.mainPackage || options.packagePath); } else { // Default to version if nothing specified command.push('version'); } // Application arguments if (options.args) { command.push('--'); command.push(...options.args); } return command; } private buildEnvironment( options: GoConnectionOptions ): Record<string, string> { const env: Record<string, string> = {}; // Go environment variables if (options.goPath) { env.GOPATH = options.goPath; } if (options.goRoot) { env.GOROOT = options.goRoot; } // Cross-compilation if (options.goOs) { env.GOOS = options.goOs; } if (options.goArch) { env.GOARCH = options.goArch; } // CGO settings if (options.cgEnabled !== undefined) { env.CGO_ENABLED = options.cgEnabled ? '1' : '0'; } // Module mode if (options.modMode) { env.GOFLAGS = `-mod=${options.modMode}`; } // Vendor mode if (options.vendorMode) { env.GOFLAGS = env.GOFLAGS ? `${env.GOFLAGS} -mod=vendor` : '-mod=vendor'; } // Workspace mode if (options.workspaceMode) { env.GOWORK = 'auto'; } // Profiling if (options.enablePprof && options.pprofPort) { env.GOPPROF_PORT = options.pprofPort.toString(); } // Custom environment variables if (options.environment) { Object.assign(env, options.environment); } return env; } async cleanup(): Promise<void> { this.logger.info('Cleaning up Go protocol'); // Close all Go processes for (const [sessionId, process] of Array.from(this.goProcesses)) { try { process.kill(); } catch (error) { this.logger.error( `Error killing Go process for session ${sessionId}:`, error ); } } // Clear all data this.goProcesses.clear(); // Call parent cleanup await super.cleanup(); } } export default GoLangProtocol;