mirror of
https://github.com/czlonkowski/n8n-mcp.git
synced 2026-02-09 14:53:07 +00:00
6e52afd5af
- Added proper SIGTERM/SIGINT signal handlers to stdio-wrapper.ts - Removed problematic trap commands from docker-entrypoint.sh - Added STOPSIGNAL directive to Dockerfile for explicit signal handling - Implemented graceful shutdown in MCP server with database cleanup - Added stdin close detection for proper cleanup when Claude Desktop closes the pipe - Containers now properly exit with the --rm flag, preventing accumulation - Added --init flag to all Docker configuration examples - Updated documentation with container lifecycle management best practices - Bumped version to 2.7.20 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
#!/usr/bin/env node
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/**
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* Stdio wrapper for MCP server
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* Ensures clean JSON-RPC communication by suppressing all non-JSON output
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*/
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// CRITICAL: Set environment BEFORE any imports to prevent any initialization logs
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process.env.MCP_MODE = 'stdio';
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process.env.DISABLE_CONSOLE_OUTPUT = 'true';
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process.env.LOG_LEVEL = 'error';
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// Suppress all console output before anything else
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const originalConsoleLog = console.log;
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const originalConsoleError = console.error;
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const originalConsoleWarn = console.warn;
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const originalConsoleInfo = console.info;
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const originalConsoleDebug = console.debug;
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const originalConsoleTrace = console.trace;
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const originalConsoleDir = console.dir;
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const originalConsoleTime = console.time;
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const originalConsoleTimeEnd = console.timeEnd;
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// Override ALL console methods to prevent any output
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console.log = () => {};
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console.error = () => {};
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console.warn = () => {};
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console.info = () => {};
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console.debug = () => {};
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console.trace = () => {};
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console.dir = () => {};
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console.time = () => {};
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console.timeEnd = () => {};
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console.timeLog = () => {};
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console.group = () => {};
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console.groupEnd = () => {};
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console.table = () => {};
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console.clear = () => {};
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console.count = () => {};
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console.countReset = () => {};
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// Import and run the server AFTER suppressing output
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import { N8NDocumentationMCPServer } from './server';
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let server: N8NDocumentationMCPServer | null = null;
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async function main() {
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try {
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server = new N8NDocumentationMCPServer();
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await server.run();
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} catch (error) {
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// In case of fatal error, output to stderr only
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originalConsoleError('Fatal error:', error);
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process.exit(1);
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}
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}
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// Handle uncaught errors silently
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process.on('uncaughtException', (error) => {
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originalConsoleError('Uncaught exception:', error);
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process.exit(1);
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});
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process.on('unhandledRejection', (reason) => {
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originalConsoleError('Unhandled rejection:', reason);
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process.exit(1);
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});
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// Handle termination signals for proper cleanup
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let isShuttingDown = false;
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async function shutdown(signal: string) {
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if (isShuttingDown) return;
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isShuttingDown = true;
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// Log to stderr only (not stdout which would corrupt JSON-RPC)
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originalConsoleError(`Received ${signal}, shutting down gracefully...`);
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try {
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// Shutdown the server if it exists
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if (server) {
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await server.shutdown();
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}
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} catch (error) {
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originalConsoleError('Error during shutdown:', error);
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}
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// Close stdin to signal we're done reading
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process.stdin.pause();
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process.stdin.destroy();
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// Exit with timeout to ensure we don't hang
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setTimeout(() => {
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process.exit(0);
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}, 500).unref(); // unref() allows process to exit if this is the only thing keeping it alive
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// But also exit immediately if nothing else is pending
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process.exit(0);
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}
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// Register signal handlers
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process.on('SIGTERM', () => void shutdown('SIGTERM'));
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process.on('SIGINT', () => void shutdown('SIGINT'));
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process.on('SIGHUP', () => void shutdown('SIGHUP'));
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// Also handle stdin close (when Claude Desktop closes the pipe)
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process.stdin.on('end', () => {
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originalConsoleError('stdin closed, shutting down...');
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void shutdown('STDIN_CLOSE');
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});
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main(); |