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'; // Ruby Protocol connection options interface RubyConnectionOptions extends SessionOptions { rubyPath?: string; rubyVersion?: string; scriptFile?: string; gemfile?: string; bundleExec?: boolean; interactive?: boolean; irb?: boolean; rubyFlags?: string[]; gemSet?: string; rvmUse?: string; rbenvVersion?: string; environment?: Record<string, string>; enableDebug?: boolean; debugPort?: number; enableProfiling?: boolean; railsApp?: boolean; railsEnv?: string; rakeTask?: string; } /** * Ruby Protocol Implementation * * Provides Ruby interpreter console access through ruby command * Supports IRB, script execution, Bundler, Rails, RVM, rbenv, debugging, and profiling */ export class RubyProtocol extends BaseProtocol { public readonly type: ConsoleType = 'ruby'; public readonly capabilities: ProtocolCapabilities; private rubyProcesses = 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('ruby'); 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: 20, 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 Ruby is available await this.checkRubyAvailability(); this.isInitialized = true; this.logger.info('Ruby protocol initialized with production features'); } catch (error: any) { this.logger.error('Failed to initialize Ruby protocol', error); throw error; } } async createSession(options: SessionOptions): Promise<ConsoleSession> { const sessionId = `ruby-${Date.now()}-${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 rubyProcess = this.rubyProcesses.get(sessionId); const session = this.sessions.get(sessionId); if (!rubyProcess || !rubyProcess.stdin || !session) { throw new Error(`No active Ruby session: ${sessionId}`); } rubyProcess.stdin.write(input); session.lastActivity = new Date(); this.emit('input-sent', { sessionId, input, timestamp: new Date(), }); this.logger.debug( `Sent input to Ruby session ${sessionId}: ${input.substring(0, 100)}` ); } async closeSession(sessionId: string): Promise<void> { try { const rubyProcess = this.rubyProcesses.get(sessionId); if (rubyProcess) { // Try graceful shutdown first rubyProcess.kill('SIGTERM'); // Force kill after timeout setTimeout(() => { if (rubyProcess && !rubyProcess.killed) { rubyProcess.kill('SIGKILL'); } }, 5000); this.rubyProcesses.delete(sessionId); } // Clean up base protocol session this.sessions.delete(sessionId); this.logger.info(`Ruby session ${sessionId} closed`); this.emit('session-closed', sessionId); } catch (error) { this.logger.error(`Error closing Ruby session ${sessionId}:`, error); throw error; } } async doCreateSession( sessionId: string, options: SessionOptions, sessionState: SessionState ): Promise<ConsoleSession> { if (!this.isInitialized) { await this.initialize(); } const rubyOptions = options as RubyConnectionOptions; // Build Ruby command const rubyCommand = this.buildRubyCommand(rubyOptions); // Spawn Ruby process const rubyProcess = spawn(rubyCommand[0], rubyCommand.slice(1), { stdio: ['pipe', 'pipe', 'pipe'], cwd: options.cwd || process.cwd(), env: { ...process.env, ...this.buildEnvironment(rubyOptions), ...options.env, }, }); // Set up output handling rubyProcess.stdout?.on('data', (data) => { const output: ConsoleOutput = { sessionId, type: 'stdout', data: data.toString(), timestamp: new Date(), }; this.addToOutputBuffer(sessionId, output); }); rubyProcess.stderr?.on('data', (data) => { const output: ConsoleOutput = { sessionId, type: 'stderr', data: data.toString(), timestamp: new Date(), }; this.addToOutputBuffer(sessionId, output); }); rubyProcess.on('error', (error) => { this.logger.error(`Ruby process error for session ${sessionId}:`, error); this.emit('session-error', { sessionId, error }); }); rubyProcess.on('close', (code) => { this.logger.info( `Ruby process closed for session ${sessionId} with code ${code}` ); this.markSessionComplete(sessionId, code || 0); }); // Store the process this.rubyProcesses.set(sessionId, rubyProcess); // Create session object const session: ConsoleSession = { id: sessionId, command: rubyCommand[0], args: rubyCommand.slice(1), cwd: options.cwd || process.cwd(), env: { ...process.env, ...this.buildEnvironment(rubyOptions), ...options.env, }, createdAt: new Date(), lastActivity: new Date(), status: 'running', type: this.type, streaming: options.streaming, executionState: 'idle', activeCommands: new Map(), pid: rubyProcess.pid, }; this.sessions.set(sessionId, session); this.logger.info( `Ruby session ${sessionId} created for ${rubyOptions.scriptFile || rubyOptions.rakeTask || rubyOptions.irb ? 'IRB' : 'Ruby application'}` ); this.emit('session-created', { sessionId, type: 'ruby', 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: false, // Ruby sessions are typically persistent isPersistent: true, createdAt: session.createdAt, lastActivity: session.lastActivity, pid: session.pid, metadata: {}, }; } async handleError( error: Error, context: ErrorContext ): Promise<ErrorRecoveryResult> { this.logger.error( `Error in Ruby session ${context.sessionId}: ${error.message}` ); return { recovered: false, strategy: 'none', attempts: 0, duration: 0, error: error.message, }; } async recoverSession(sessionId: string): Promise<boolean> { const rubyProcess = this.rubyProcesses.get(sessionId); return (rubyProcess && !rubyProcess.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.rubyProcesses.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.checkRubyAvailability(); return { ...baseStatus, dependencies: { ruby: { available: true }, }, }; } catch (error) { return { ...baseStatus, isHealthy: false, errors: [...baseStatus.errors, `Ruby not available: ${error}`], dependencies: { ruby: { available: false }, }, }; } } private async checkRubyAvailability(): Promise<void> { return new Promise((resolve, reject) => { const testProcess = spawn('ruby', ['--version'], { stdio: 'pipe' }); testProcess.on('close', (code) => { if (code === 0) { resolve(); } else { reject(new Error('Ruby interpreter not found. Please install Ruby.')); } }); testProcess.on('error', () => { reject(new Error('Ruby interpreter not found. Please install Ruby.')); }); }); } private buildRubyCommand(options: RubyConnectionOptions): string[] { const command = []; // Handle RVM environment if (options.rvmUse) { command.push('rvm', options.rvmUse, 'do'); } // Handle rbenv environment if (options.rbenvVersion) { command.push('rbenv', 'exec'); } // Bundle exec wrapper if (options.bundleExec && options.gemfile) { command.push('bundle', 'exec'); } // Ruby executable if (options.rubyPath) { command.push(options.rubyPath); } else if (options.rubyVersion) { command.push(`ruby-${options.rubyVersion}`); } else { command.push('ruby'); } // Ruby flags if (options.rubyFlags) { command.push(...options.rubyFlags); } // Debug options if (options.enableDebug && options.debugPort) { command.push( '-rdebug-ide', `--host`, '0.0.0.0', `--port`, options.debugPort.toString() ); } // Profiling if (options.enableProfiling) { command.push('-rprofile'); } // Rails application if (options.railsApp) { if (options.railsEnv) { command.push('-e', `ENV['RAILS_ENV'] = '${options.railsEnv}'`); } command.push('-rrails/all'); } // IRB mode if (options.irb || options.interactive) { command.push('-i'); // Add IRB if not already a script if (!options.scriptFile && !options.rakeTask) { const irbIndex = command.indexOf('ruby'); if (irbIndex !== -1) { command[irbIndex] = 'irb'; } } } // Rake task if (options.rakeTask) { const rubyIndex = command.indexOf('ruby'); if (rubyIndex !== -1) { command[rubyIndex] = 'rake'; command.push(options.rakeTask); } } else if (options.scriptFile) { command.push(options.scriptFile); } else if (!options.irb && !options.interactive) { // Default to IRB if no script specified const rubyIndex = command.indexOf('ruby'); if (rubyIndex !== -1) { command[rubyIndex] = 'irb'; } } // Application arguments if (options.args) { command.push(...options.args); } return command; } private buildEnvironment( options: RubyConnectionOptions ): Record<string, string> { const env: Record<string, string> = {}; // Gemfile path if (options.gemfile) { env.BUNDLE_GEMFILE = options.gemfile; } // Gem set if (options.gemSet) { env.GEM_HOME = options.gemSet; env.GEM_PATH = options.gemSet; } // RVM environment if (options.rvmUse) { env.rvm_ruby_string = options.rvmUse; } // rbenv version if (options.rbenvVersion) { env.RBENV_VERSION = options.rbenvVersion; } // Rails environment if (options.railsEnv) { env.RAILS_ENV = options.railsEnv; } // Custom environment variables if (options.environment) { Object.assign(env, options.environment); } // Ruby path modifications if (options.rubyPath) { env.RUBY_PATH = options.rubyPath; } // Profiling if (options.enableProfiling) { env.RUBY_PROF = '1'; } return env; } async cleanup(): Promise<void> { this.logger.info('Cleaning up Ruby protocol'); // Close all Ruby processes for (const [sessionId, process] of Array.from(this.rubyProcesses)) { try { process.kill(); } catch (error) { this.logger.error( `Error killing Ruby process for session ${sessionId}:`, error ); } } // Clear all data this.rubyProcesses.clear(); // Call parent cleanup await super.cleanup(); } } export default RubyProtocol;