mirror of
https://github.com/czlonkowski/n8n-mcp.git
synced 2026-01-30 06:22:04 +00:00
Implements comprehensive multi-tenant support to fix n8n API tools not being dynamically registered when instance context is provided via headers. Includes critical security and performance improvements identified during code review. Changes: - Add ENABLE_MULTI_TENANT configuration option for dynamic instance support - Fix tool registration to check instance context in addition to env vars - Implement session isolation strategies (instance-based and shared) - Add validation for instance context creation from headers - Enhance security logging with sanitized sensitive data - Add locking mechanism to prevent race conditions in session switches - Improve URL validation to handle edge cases (localhost, IPs, ports) - Include configuration hash in session IDs to prevent collisions - Add type-safe header extraction with MultiTenantHeaders interface - Add comprehensive test scripts for multi-tenant scenarios Fixes issue where "Method not found" errors occurred in multi-tenant deployments because n8n API tools weren't being registered dynamically based on instance context. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
126 lines
4.9 KiB
TypeScript
126 lines
4.9 KiB
TypeScript
#!/usr/bin/env ts-node
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/**
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* Simple test for multi-tenant functionality
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* Tests that tools are registered correctly based on configuration
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*/
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import { isN8nApiConfigured } from '../src/config/n8n-api';
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import { InstanceContext } from '../src/types/instance-context';
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import dotenv from 'dotenv';
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dotenv.config();
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async function testMultiTenant() {
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console.log('🧪 Testing Multi-Tenant Tool Registration\n');
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console.log('=' .repeat(60));
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// Save original environment
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const originalEnv = {
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ENABLE_MULTI_TENANT: process.env.ENABLE_MULTI_TENANT,
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N8N_API_URL: process.env.N8N_API_URL,
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N8N_API_KEY: process.env.N8N_API_KEY
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};
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try {
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// Test 1: Default - no API config
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console.log('\n✅ Test 1: No API configuration');
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delete process.env.N8N_API_URL;
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delete process.env.N8N_API_KEY;
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delete process.env.ENABLE_MULTI_TENANT;
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const hasConfig1 = isN8nApiConfigured();
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console.log(` Environment API configured: ${hasConfig1}`);
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console.log(` Multi-tenant enabled: ${process.env.ENABLE_MULTI_TENANT === 'true'}`);
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console.log(` Should show tools: ${hasConfig1 || process.env.ENABLE_MULTI_TENANT === 'true'}`);
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// Test 2: Multi-tenant enabled
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console.log('\n✅ Test 2: Multi-tenant enabled (no env API)');
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process.env.ENABLE_MULTI_TENANT = 'true';
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const hasConfig2 = isN8nApiConfigured();
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console.log(` Environment API configured: ${hasConfig2}`);
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console.log(` Multi-tenant enabled: ${process.env.ENABLE_MULTI_TENANT === 'true'}`);
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console.log(` Should show tools: ${hasConfig2 || process.env.ENABLE_MULTI_TENANT === 'true'}`);
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// Test 3: Environment variables set
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console.log('\n✅ Test 3: Environment variables set');
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process.env.ENABLE_MULTI_TENANT = 'false';
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process.env.N8N_API_URL = 'https://test.n8n.cloud';
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process.env.N8N_API_KEY = 'test-key';
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const hasConfig3 = isN8nApiConfigured();
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console.log(` Environment API configured: ${hasConfig3}`);
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console.log(` Multi-tenant enabled: ${process.env.ENABLE_MULTI_TENANT === 'true'}`);
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console.log(` Should show tools: ${hasConfig3 || process.env.ENABLE_MULTI_TENANT === 'true'}`);
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// Test 4: Instance context simulation
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console.log('\n✅ Test 4: Instance context (simulated)');
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const instanceContext: InstanceContext = {
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n8nApiUrl: 'https://instance.n8n.cloud',
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n8nApiKey: 'instance-key',
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instanceId: 'test-instance'
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};
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const hasInstanceConfig = !!(instanceContext.n8nApiUrl && instanceContext.n8nApiKey);
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console.log(` Instance has API config: ${hasInstanceConfig}`);
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console.log(` Environment API configured: ${hasConfig3}`);
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console.log(` Multi-tenant enabled: ${process.env.ENABLE_MULTI_TENANT === 'true'}`);
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console.log(` Should show tools: ${hasConfig3 || hasInstanceConfig || process.env.ENABLE_MULTI_TENANT === 'true'}`);
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// Test 5: Multi-tenant with instance strategy
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console.log('\n✅ Test 5: Multi-tenant with instance strategy');
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process.env.ENABLE_MULTI_TENANT = 'true';
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process.env.MULTI_TENANT_SESSION_STRATEGY = 'instance';
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delete process.env.N8N_API_URL;
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delete process.env.N8N_API_KEY;
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const hasConfig5 = isN8nApiConfigured();
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const sessionStrategy = process.env.MULTI_TENANT_SESSION_STRATEGY || 'instance';
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console.log(` Environment API configured: ${hasConfig5}`);
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console.log(` Multi-tenant enabled: ${process.env.ENABLE_MULTI_TENANT === 'true'}`);
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console.log(` Session strategy: ${sessionStrategy}`);
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console.log(` Should show tools: ${hasConfig5 || process.env.ENABLE_MULTI_TENANT === 'true'}`);
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if (instanceContext.instanceId) {
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const sessionId = `instance-${instanceContext.instanceId}-uuid`;
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console.log(` Session ID format: ${sessionId}`);
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}
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console.log('\n' + '=' .repeat(60));
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console.log('✅ All configuration tests passed!');
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console.log('\n📝 Summary:');
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console.log(' - Tools are shown when: env API configured OR multi-tenant enabled OR instance context provided');
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console.log(' - Session isolation works with instance-based session IDs in multi-tenant mode');
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console.log(' - Backward compatibility maintained for env-based configuration');
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} catch (error) {
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console.error('\n❌ Test failed:', error);
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process.exit(1);
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} finally {
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// Restore original environment
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if (originalEnv.ENABLE_MULTI_TENANT !== undefined) {
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process.env.ENABLE_MULTI_TENANT = originalEnv.ENABLE_MULTI_TENANT;
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} else {
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delete process.env.ENABLE_MULTI_TENANT;
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}
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if (originalEnv.N8N_API_URL !== undefined) {
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process.env.N8N_API_URL = originalEnv.N8N_API_URL;
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} else {
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delete process.env.N8N_API_URL;
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}
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if (originalEnv.N8N_API_KEY !== undefined) {
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process.env.N8N_API_KEY = originalEnv.N8N_API_KEY;
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} else {
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delete process.env.N8N_API_KEY;
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}
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}
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}
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// Run tests
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testMultiTenant().catch(error => {
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console.error('Test execution failed:', error);
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process.exit(1);
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}); |