mirror of
https://github.com/czlonkowski/n8n-mcp.git
synced 2026-03-19 00:43:07 +00:00
fix: Docker/cloud telemetry user ID stability (v2.17.1)
Fixes critical issue where Docker and cloud deployments generated new anonymous user IDs on every container recreation, causing 100-200x inflation in unique user counts. Changes: - Use host's boot_id for stable identification across container updates - Auto-detect Docker (IS_DOCKER=true) and 8 cloud platforms - Defensive fallback chain: boot_id → combined signals → generic ID - Zero configuration required Impact: - Resolves ~1000x/month inflation in stdio mode - Resolves ~180x/month inflation in HTTP mode (6 releases/day) - Improves telemetry accuracy: 3,996 apparent users → ~2,400-2,800 actual Testing: - 18 new unit tests for boot_id functionality - 16 new integration tests for Docker/cloud detection - All 60 telemetry tests passing (100%) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
czlonkowski
277
tests/integration/telemetry/docker-user-id-stability.test.ts
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277
tests/integration/telemetry/docker-user-id-stability.test.ts
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@@ -0,0 +1,277 @@
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import { describe, it, expect, beforeEach, afterEach } from 'vitest';
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import { TelemetryConfigManager } from '../../../src/telemetry/config-manager';
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import { existsSync, readFileSync, unlinkSync, rmSync } from 'fs';
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import { join, resolve } from 'path';
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import { homedir } from 'os';
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/**
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* Integration tests for Docker user ID stability
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* Tests actual file system operations and environment detection
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*/
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describe('Docker User ID Stability - Integration Tests', () => {
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let manager: TelemetryConfigManager;
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const configPath = join(homedir(), '.n8n-mcp', 'telemetry.json');
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const originalEnv = { ...process.env };
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beforeEach(() => {
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// Clean up any existing config
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try {
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if (existsSync(configPath)) {
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unlinkSync(configPath);
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}
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} catch (error) {
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// Ignore cleanup errors
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}
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// Reset singleton
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(TelemetryConfigManager as any).instance = null;
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// Reset environment
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process.env = { ...originalEnv };
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});
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afterEach(() => {
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// Restore environment
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process.env = originalEnv;
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// Clean up test config
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try {
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if (existsSync(configPath)) {
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unlinkSync(configPath);
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}
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} catch (error) {
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// Ignore cleanup errors
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}
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});
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describe('boot_id file reading', () => {
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it('should read boot_id from /proc/sys/kernel/random/boot_id if available', () => {
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const bootIdPath = '/proc/sys/kernel/random/boot_id';
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// Skip test if not on Linux or boot_id not available
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if (!existsSync(bootIdPath)) {
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console.log('⚠️ Skipping boot_id test - not available on this system');
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return;
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}
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try {
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const bootId = readFileSync(bootIdPath, 'utf-8').trim();
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// Verify it's a valid UUID
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const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
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expect(bootId).toMatch(uuidRegex);
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expect(bootId).toHaveLength(36); // UUID with dashes
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} catch (error) {
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console.log('⚠️ boot_id exists but not readable:', error);
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}
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});
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it('should generate stable user ID when boot_id is available in Docker', () => {
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const bootIdPath = '/proc/sys/kernel/random/boot_id';
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// Skip if not in Docker environment or boot_id not available
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if (!existsSync(bootIdPath)) {
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console.log('⚠️ Skipping Docker boot_id test - not in Linux container');
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return;
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}
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process.env.IS_DOCKER = 'true';
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manager = TelemetryConfigManager.getInstance();
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const userId1 = manager.getUserId();
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// Reset singleton and get new instance
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(TelemetryConfigManager as any).instance = null;
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manager = TelemetryConfigManager.getInstance();
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const userId2 = manager.getUserId();
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// Should be identical across recreations (boot_id is stable)
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expect(userId1).toBe(userId2);
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expect(userId1).toMatch(/^[a-f0-9]{16}$/);
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});
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});
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describe('persistence across getInstance() calls', () => {
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it('should return same user ID across multiple getInstance() calls', () => {
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process.env.IS_DOCKER = 'true';
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const manager1 = TelemetryConfigManager.getInstance();
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const userId1 = manager1.getUserId();
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const manager2 = TelemetryConfigManager.getInstance();
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const userId2 = manager2.getUserId();
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const manager3 = TelemetryConfigManager.getInstance();
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const userId3 = manager3.getUserId();
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expect(userId1).toBe(userId2);
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expect(userId2).toBe(userId3);
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expect(manager1).toBe(manager2);
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expect(manager2).toBe(manager3);
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});
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it('should persist user ID to disk and reload correctly', () => {
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process.env.IS_DOCKER = 'true';
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// First instance - creates config
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const manager1 = TelemetryConfigManager.getInstance();
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const userId1 = manager1.getUserId();
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// Load config to trigger save
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manager1.loadConfig();
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// Wait a bit for file write
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expect(existsSync(configPath)).toBe(true);
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// Reset singleton
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(TelemetryConfigManager as any).instance = null;
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// Second instance - loads from disk
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const manager2 = TelemetryConfigManager.getInstance();
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const userId2 = manager2.getUserId();
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expect(userId1).toBe(userId2);
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});
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});
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describe('Docker vs non-Docker detection', () => {
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it('should detect Docker environment via IS_DOCKER=true', () => {
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process.env.IS_DOCKER = 'true';
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manager = TelemetryConfigManager.getInstance();
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const config = manager.loadConfig();
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// In Docker, should use boot_id-based method
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expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should use file-based method for non-Docker local installations', () => {
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// Ensure no Docker/cloud environment variables
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delete process.env.IS_DOCKER;
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delete process.env.RAILWAY_ENVIRONMENT;
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delete process.env.RENDER;
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delete process.env.FLY_APP_NAME;
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delete process.env.HEROKU_APP_NAME;
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delete process.env.AWS_EXECUTION_ENV;
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delete process.env.KUBERNETES_SERVICE_HOST;
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delete process.env.GOOGLE_CLOUD_PROJECT;
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delete process.env.AZURE_FUNCTIONS_ENVIRONMENT;
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manager = TelemetryConfigManager.getInstance();
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const config = manager.loadConfig();
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// Should generate valid user ID
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expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
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// Should persist to file for local installations
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expect(existsSync(configPath)).toBe(true);
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});
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});
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describe('environment variable detection', () => {
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it('should detect Railway cloud environment', () => {
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process.env.RAILWAY_ENVIRONMENT = 'production';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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// Should use Docker/cloud method (boot_id-based)
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Render cloud environment', () => {
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process.env.RENDER = 'true';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Fly.io cloud environment', () => {
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process.env.FLY_APP_NAME = 'n8n-mcp-app';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Heroku cloud environment', () => {
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process.env.HEROKU_APP_NAME = 'n8n-mcp-app';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect AWS cloud environment', () => {
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process.env.AWS_EXECUTION_ENV = 'AWS_ECS_FARGATE';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Kubernetes environment', () => {
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process.env.KUBERNETES_SERVICE_HOST = '10.0.0.1';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Google Cloud environment', () => {
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process.env.GOOGLE_CLOUD_PROJECT = 'n8n-mcp-project';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should detect Azure cloud environment', () => {
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process.env.AZURE_FUNCTIONS_ENVIRONMENT = 'production';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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});
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describe('fallback chain behavior', () => {
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it('should use combined fingerprint fallback when boot_id unavailable', () => {
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// Set Docker environment but boot_id won't be available on macOS
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process.env.IS_DOCKER = 'true';
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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// Should still generate valid user ID via fallback
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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expect(userId).toHaveLength(16);
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});
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it('should generate consistent generic Docker ID when all else fails', () => {
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// Set Docker but no boot_id or /proc signals available (e.g., macOS)
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process.env.IS_DOCKER = 'true';
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const manager1 = TelemetryConfigManager.getInstance();
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const userId1 = manager1.getUserId();
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// Reset singleton
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(TelemetryConfigManager as any).instance = null;
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const manager2 = TelemetryConfigManager.getInstance();
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const userId2 = manager2.getUserId();
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// Generic Docker ID should be consistent across calls
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expect(userId1).toBe(userId2);
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expect(userId1).toMatch(/^[a-f0-9]{16}$/);
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});
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});
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});
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@@ -504,4 +504,362 @@ describe('TelemetryConfigManager', () => {
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expect(typeof status).toBe('string');
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});
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});
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describe('Docker/Cloud user ID generation', () => {
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let originalIsDocker: string | undefined;
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let originalRailway: string | undefined;
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beforeEach(() => {
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originalIsDocker = process.env.IS_DOCKER;
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originalRailway = process.env.RAILWAY_ENVIRONMENT;
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});
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afterEach(() => {
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if (originalIsDocker === undefined) {
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delete process.env.IS_DOCKER;
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} else {
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process.env.IS_DOCKER = originalIsDocker;
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}
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if (originalRailway === undefined) {
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delete process.env.RAILWAY_ENVIRONMENT;
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} else {
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process.env.RAILWAY_ENVIRONMENT = originalRailway;
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}
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});
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describe('boot_id reading', () => {
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it('should read valid boot_id from /proc/sys/kernel/random/boot_id', () => {
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const mockBootId = 'f3c371fe-8a77-4592-8332-7a4d0d88d4ac';
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process.env.IS_DOCKER = 'true';
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vi.mocked(existsSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return true;
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return false;
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});
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vi.mocked(readFileSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
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throw new Error('File not found');
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});
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(TelemetryConfigManager as any).instance = null;
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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expect(vi.mocked(readFileSync)).toHaveBeenCalledWith(
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'/proc/sys/kernel/random/boot_id',
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'utf-8'
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);
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});
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it('should validate boot_id UUID format', () => {
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const invalidBootId = 'not-a-valid-uuid';
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process.env.IS_DOCKER = 'true';
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vi.mocked(existsSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return true;
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if (path === '/proc/cpuinfo') return true;
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if (path === '/proc/meminfo') return true;
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return false;
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});
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vi.mocked(readFileSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return invalidBootId;
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if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
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if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
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throw new Error('File not found');
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});
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(TelemetryConfigManager as any).instance = null;
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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// Should fallback to combined fingerprint, not use invalid boot_id
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should handle boot_id file not existing', () => {
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process.env.IS_DOCKER = 'true';
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vi.mocked(existsSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return false;
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if (path === '/proc/cpuinfo') return true;
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if (path === '/proc/meminfo') return true;
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return false;
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});
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vi.mocked(readFileSync).mockImplementation((path: any) => {
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if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
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if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
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throw new Error('File not found');
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});
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(TelemetryConfigManager as any).instance = null;
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manager = TelemetryConfigManager.getInstance();
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const userId = manager.getUserId();
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// Should fallback to combined fingerprint
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
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});
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it('should handle boot_id read errors gracefully', () => {
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process.env.IS_DOCKER = 'true';
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vi.mocked(existsSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') return true;
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return false;
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});
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vi.mocked(readFileSync).mockImplementation((path: any) => {
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if (path === '/proc/sys/kernel/random/boot_id') {
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throw new Error('Permission denied');
|
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}
|
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throw new Error('File not found');
|
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});
|
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|
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(TelemetryConfigManager as any).instance = null;
|
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manager = TelemetryConfigManager.getInstance();
|
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const userId = manager.getUserId();
|
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|
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// Should fallback gracefully
|
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expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
|
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it('should generate consistent user ID from same boot_id', () => {
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const mockBootId = 'f3c371fe-8a77-4592-8332-7a4d0d88d4ac';
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process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
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if (path === '/proc/sys/kernel/random/boot_id') return true;
|
||||
return false;
|
||||
});
|
||||
|
||||
vi.mocked(readFileSync).mockImplementation((path: any) => {
|
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if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
|
||||
throw new Error('File not found');
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
const manager1 = TelemetryConfigManager.getInstance();
|
||||
const userId1 = manager1.getUserId();
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
const manager2 = TelemetryConfigManager.getInstance();
|
||||
const userId2 = manager2.getUserId();
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|
||||
// Same boot_id should produce same user_id
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expect(userId1).toBe(userId2);
|
||||
});
|
||||
});
|
||||
|
||||
describe('combined fingerprint fallback', () => {
|
||||
it('should generate fingerprint from CPU, memory, and kernel', () => {
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process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return false;
|
||||
if (path === '/proc/cpuinfo') return true;
|
||||
if (path === '/proc/meminfo') return true;
|
||||
if (path === '/proc/version') return true;
|
||||
return false;
|
||||
});
|
||||
|
||||
vi.mocked(readFileSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\nprocessor: 2\nprocessor: 3\n';
|
||||
if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
|
||||
if (path === '/proc/version') return 'Linux version 5.15.49-linuxkit';
|
||||
throw new Error('File not found');
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
|
||||
it('should require at least 3 signals for combined fingerprint', () => {
|
||||
process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return false;
|
||||
// Only platform and arch available (2 signals)
|
||||
return false;
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
// Should fallback to generic Docker ID
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
|
||||
it('should handle partial /proc data', () => {
|
||||
process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return false;
|
||||
if (path === '/proc/cpuinfo') return true;
|
||||
// meminfo missing
|
||||
return false;
|
||||
});
|
||||
|
||||
vi.mocked(readFileSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
|
||||
throw new Error('File not found');
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
// Should include platform and arch, so 4 signals total
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
});
|
||||
|
||||
describe('environment detection', () => {
|
||||
it('should use Docker method when IS_DOCKER=true', () => {
|
||||
process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockReturnValue(false);
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
// Should attempt to read boot_id
|
||||
expect(vi.mocked(existsSync)).toHaveBeenCalledWith('/proc/sys/kernel/random/boot_id');
|
||||
});
|
||||
|
||||
it('should use Docker method for Railway environment', () => {
|
||||
process.env.RAILWAY_ENVIRONMENT = 'production';
|
||||
delete process.env.IS_DOCKER;
|
||||
|
||||
vi.mocked(existsSync).mockReturnValue(false);
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
// Should attempt to read boot_id
|
||||
expect(vi.mocked(existsSync)).toHaveBeenCalledWith('/proc/sys/kernel/random/boot_id');
|
||||
});
|
||||
|
||||
it('should use file-based method for local installation', () => {
|
||||
delete process.env.IS_DOCKER;
|
||||
delete process.env.RAILWAY_ENVIRONMENT;
|
||||
|
||||
vi.mocked(existsSync).mockReturnValue(false);
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
// Should NOT attempt to read boot_id
|
||||
const calls = vi.mocked(existsSync).mock.calls;
|
||||
const bootIdCalls = calls.filter(call => call[0] === '/proc/sys/kernel/random/boot_id');
|
||||
expect(bootIdCalls.length).toBe(0);
|
||||
});
|
||||
|
||||
it('should detect cloud platforms', () => {
|
||||
const cloudEnvVars = [
|
||||
'RAILWAY_ENVIRONMENT',
|
||||
'RENDER',
|
||||
'FLY_APP_NAME',
|
||||
'HEROKU_APP_NAME',
|
||||
'AWS_EXECUTION_ENV',
|
||||
'KUBERNETES_SERVICE_HOST',
|
||||
'GOOGLE_CLOUD_PROJECT',
|
||||
'AZURE_FUNCTIONS_ENVIRONMENT'
|
||||
];
|
||||
|
||||
cloudEnvVars.forEach(envVar => {
|
||||
// Clear all env vars
|
||||
cloudEnvVars.forEach(v => delete process.env[v]);
|
||||
delete process.env.IS_DOCKER;
|
||||
|
||||
// Set one cloud env var
|
||||
process.env[envVar] = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockReturnValue(false);
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
|
||||
// Should attempt to read boot_id
|
||||
const calls = vi.mocked(existsSync).mock.calls;
|
||||
const bootIdCalls = calls.filter(call => call[0] === '/proc/sys/kernel/random/boot_id');
|
||||
expect(bootIdCalls.length).toBeGreaterThan(0);
|
||||
|
||||
// Clean up
|
||||
delete process.env[envVar];
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe('fallback chain execution', () => {
|
||||
it('should fallback from boot_id → combined → generic', () => {
|
||||
process.env.IS_DOCKER = 'true';
|
||||
|
||||
// All methods fail
|
||||
vi.mocked(existsSync).mockReturnValue(false);
|
||||
vi.mocked(readFileSync).mockImplementation(() => {
|
||||
throw new Error('File not found');
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
manager = TelemetryConfigManager.getInstance();
|
||||
const userId = manager.getUserId();
|
||||
|
||||
// Should still generate a generic Docker ID
|
||||
expect(userId).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
|
||||
it('should use boot_id if available (highest priority)', () => {
|
||||
const mockBootId = 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee';
|
||||
process.env.IS_DOCKER = 'true';
|
||||
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return true;
|
||||
return true; // All other files available too
|
||||
});
|
||||
|
||||
vi.mocked(readFileSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
|
||||
if (path === '/proc/cpuinfo') return 'processor: 0\n';
|
||||
if (path === '/proc/meminfo') return 'MemTotal: 1000000 kB\n';
|
||||
return 'mock data';
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
const manager1 = TelemetryConfigManager.getInstance();
|
||||
const userId1 = manager1.getUserId();
|
||||
|
||||
// Now break boot_id but keep combined signals
|
||||
vi.mocked(existsSync).mockImplementation((path: any) => {
|
||||
if (path === '/proc/sys/kernel/random/boot_id') return false;
|
||||
return true;
|
||||
});
|
||||
|
||||
(TelemetryConfigManager as any).instance = null;
|
||||
const manager2 = TelemetryConfigManager.getInstance();
|
||||
const userId2 = manager2.getUserId();
|
||||
|
||||
// Different methods should produce different IDs
|
||||
expect(userId1).not.toBe(userId2);
|
||||
expect(userId1).toMatch(/^[a-f0-9]{16}$/);
|
||||
expect(userId2).toMatch(/^[a-f0-9]{16}$/);
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user