19.6.1
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150
test/test.memory-leak-check.node.ts
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150
test/test.memory-leak-check.node.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { SmartProxy, createHttpRoute } from '../ts/index.js';
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import * as http from 'http';
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tap.test('should not have memory leaks in long-running operations', async (tools) => {
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// Get initial memory usage
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const getMemoryUsage = () => {
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if (global.gc) {
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global.gc();
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}
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const usage = process.memoryUsage();
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return {
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heapUsed: Math.round(usage.heapUsed / 1024 / 1024), // MB
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external: Math.round(usage.external / 1024 / 1024), // MB
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rss: Math.round(usage.rss / 1024 / 1024) // MB
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};
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};
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// Create a target server
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const targetServer = http.createServer((req, res) => {
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res.writeHead(200, { 'Content-Type': 'text/plain' });
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res.end('OK');
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});
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await new Promise<void>((resolve) => targetServer.listen(3100, resolve));
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// Create the proxy - use non-privileged port
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const routes = [
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createHttpRoute(['test1.local', 'test2.local', 'test3.local'], { host: 'localhost', port: 3100 }),
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];
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// Update route to use port 8080
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routes[0].match.ports = 8080;
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const proxy = new SmartProxy({
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ports: [8080], // Use non-privileged port
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routes: routes
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});
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await proxy.start();
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console.log('Starting memory leak test...');
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const initialMemory = getMemoryUsage();
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console.log('Initial memory:', initialMemory);
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// Function to make requests
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const makeRequest = (domain: string): Promise<void> => {
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return new Promise((resolve, reject) => {
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const req = http.request({
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hostname: 'localhost',
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port: 8080,
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path: '/',
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method: 'GET',
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headers: {
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'Host': domain
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}
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}, (res) => {
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res.on('data', () => {});
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res.on('end', resolve);
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});
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req.on('error', reject);
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req.end();
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});
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};
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// Test 1: Many requests to the same routes
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console.log('Test 1: Making 1000 requests to same routes...');
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for (let i = 0; i < 1000; i++) {
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await makeRequest(`test${(i % 3) + 1}.local`);
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if (i % 100 === 0) {
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console.log(` Progress: ${i}/1000`);
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}
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}
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const afterSameRoutesMemory = getMemoryUsage();
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console.log('Memory after same routes:', afterSameRoutesMemory);
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// Test 2: Many requests to different routes (tests routeContextCache)
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console.log('Test 2: Making 1000 requests to different routes...');
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for (let i = 0; i < 1000; i++) {
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// Create unique domain to test cache growth
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await makeRequest(`test${i}.local`);
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if (i % 100 === 0) {
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console.log(` Progress: ${i}/1000`);
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}
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}
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const afterDifferentRoutesMemory = getMemoryUsage();
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console.log('Memory after different routes:', afterDifferentRoutesMemory);
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// Test 3: Check metrics collector memory
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console.log('Test 3: Checking metrics collector...');
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const stats = proxy.getStats();
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console.log(`Active connections: ${stats.getActiveConnections()}`);
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console.log(`Total connections: ${stats.getTotalConnections()}`);
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console.log(`RPS: ${stats.getRequestsPerSecond()}`);
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// Test 4: Many rapid connections (tests requestTimestamps array)
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console.log('Test 4: Making 10000 rapid requests...');
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const rapidRequests = [];
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for (let i = 0; i < 10000; i++) {
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rapidRequests.push(makeRequest('test1.local'));
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if (i % 1000 === 0) {
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// Wait a bit to let some complete
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await Promise.all(rapidRequests);
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rapidRequests.length = 0;
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console.log(` Progress: ${i}/10000`);
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}
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}
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await Promise.all(rapidRequests);
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const afterRapidMemory = getMemoryUsage();
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console.log('Memory after rapid requests:', afterRapidMemory);
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// Force garbage collection and check final memory
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await new Promise(resolve => setTimeout(resolve, 1000));
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const finalMemory = getMemoryUsage();
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console.log('Final memory:', finalMemory);
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// Memory leak checks
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const memoryGrowth = finalMemory.heapUsed - initialMemory.heapUsed;
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console.log(`Total memory growth: ${memoryGrowth} MB`);
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// Check for excessive memory growth
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// Allow some growth but not excessive (e.g., more than 50MB for this test)
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expect(memoryGrowth).toBeLessThan(50);
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// Check specific potential leaks
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// 1. Route context cache should not grow unbounded
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const routeHandler = proxy.routeConnectionHandler as any;
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if (routeHandler.routeContextCache) {
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console.log(`Route context cache size: ${routeHandler.routeContextCache.size}`);
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// Should not have 1000 entries from different routes test
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expect(routeHandler.routeContextCache.size).toBeLessThan(100);
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}
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// 2. Metrics collector should clean up old timestamps
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const metricsCollector = (proxy.getStats() as any);
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if (metricsCollector.requestTimestamps) {
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console.log(`Request timestamps array length: ${metricsCollector.requestTimestamps.length}`);
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// Should not exceed 10000 (the cleanup threshold)
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expect(metricsCollector.requestTimestamps.length).toBeLessThanOrEqual(10000);
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}
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// Cleanup
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await proxy.stop();
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await new Promise<void>((resolve) => targetServer.close(resolve));
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console.log('Memory leak test completed successfully');
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});
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// Run with: node --expose-gc test.memory-leak-check.node.ts
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tap.start();
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58
test/test.memory-leak-simple.ts
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58
test/test.memory-leak-simple.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { SmartProxy, createHttpRoute } from '../ts/index.js';
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import * as http from 'http';
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tap.test('memory leak fixes verification', async () => {
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// Test 1: MetricsCollector requestTimestamps cleanup
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console.log('\n=== Test 1: MetricsCollector requestTimestamps cleanup ===');
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const proxy = new SmartProxy({
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ports: [8081],
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routes: [
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createHttpRoute('test.local', { host: 'localhost', port: 3200 }),
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]
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});
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// Override route port
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proxy.settings.routes[0].match.ports = 8081;
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await proxy.start();
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const metricsCollector = (proxy.getStats() as any);
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// Check initial state
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console.log('Initial timestamps:', metricsCollector.requestTimestamps.length);
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// Simulate many requests to test cleanup
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for (let i = 0; i < 6000; i++) {
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metricsCollector.recordRequest();
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}
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// Should be cleaned up to MAX_TIMESTAMPS (5000)
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console.log('After 6000 requests:', metricsCollector.requestTimestamps.length);
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expect(metricsCollector.requestTimestamps.length).toBeLessThanOrEqual(5000);
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await proxy.stop();
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// Test 2: Verify intervals are cleaned up
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console.log('\n=== Test 2: Verify cleanup methods exist ===');
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// Check RequestHandler has destroy method
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const { RequestHandler } = await import('../ts/proxies/http-proxy/request-handler.js');
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const requestHandler = new RequestHandler({}, null as any);
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expect(typeof requestHandler.destroy).toEqual('function');
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console.log('✓ RequestHandler has destroy method');
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// Check FunctionCache has destroy method
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const { FunctionCache } = await import('../ts/proxies/http-proxy/function-cache.js');
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const functionCache = new FunctionCache({ debug: () => {}, info: () => {} } as any);
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expect(typeof functionCache.destroy).toEqual('function');
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console.log('✓ FunctionCache has destroy method');
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// Cleanup
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requestHandler.destroy();
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functionCache.destroy();
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console.log('\n✅ All memory leak fixes verified!');
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});
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tap.start();
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131
test/test.memory-leak-unit.ts
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131
test/test.memory-leak-unit.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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tap.test('memory leak fixes - unit tests', async () => {
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console.log('\n=== Testing MetricsCollector memory management ===');
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// Import and test MetricsCollector directly
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const { MetricsCollector } = await import('../ts/proxies/smart-proxy/metrics-collector.js');
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// Create a mock SmartProxy with minimal required properties
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const mockProxy = {
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connectionManager: {
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getConnectionCount: () => 0,
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getConnections: () => new Map(),
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getTerminationStats: () => ({ incoming: {} })
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},
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routeConnectionHandler: {
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newConnectionSubject: {
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subscribe: () => ({ unsubscribe: () => {} })
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}
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},
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settings: {}
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};
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const collector = new MetricsCollector(mockProxy as any);
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collector.start();
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// Test timestamp cleanup
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console.log('Testing requestTimestamps cleanup...');
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// Add 6000 timestamps
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for (let i = 0; i < 6000; i++) {
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collector.recordRequest();
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}
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// Access private property for testing
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let timestamps = (collector as any).requestTimestamps;
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console.log(`Timestamps after 6000 requests: ${timestamps.length}`);
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// Force one more request to trigger cleanup
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collector.recordRequest();
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timestamps = (collector as any).requestTimestamps;
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console.log(`Timestamps after cleanup trigger: ${timestamps.length}`);
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// Now check the RPS window - all timestamps are within 1 minute so they won't be cleaned
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const now = Date.now();
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const oldestTimestamp = Math.min(...timestamps);
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const windowAge = now - oldestTimestamp;
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console.log(`Window age: ${windowAge}ms (should be < 60000ms for all to be kept)`);
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// Since all timestamps are recent (within RPS window), they won't be cleaned by window
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// But the array size should still be limited
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console.log(`MAX_TIMESTAMPS: ${(collector as any).MAX_TIMESTAMPS}`);
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// The issue is our rapid-fire test - all timestamps are within the window
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// Let's test with older timestamps
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console.log('\nTesting with mixed old/new timestamps...');
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(collector as any).requestTimestamps = [];
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// Add some old timestamps (older than window)
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const oldTime = now - 70000; // 70 seconds ago
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for (let i = 0; i < 3000; i++) {
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(collector as any).requestTimestamps.push(oldTime);
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}
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// Add new timestamps to exceed limit
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for (let i = 0; i < 3000; i++) {
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collector.recordRequest();
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}
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timestamps = (collector as any).requestTimestamps;
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console.log(`After mixed timestamps: ${timestamps.length} (old ones should be cleaned)`);
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// Old timestamps should be cleaned when we exceed MAX_TIMESTAMPS
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expect(timestamps.length).toBeLessThanOrEqual(5000);
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// Stop the collector
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collector.stop();
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console.log('\n=== Testing FunctionCache cleanup ===');
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const { FunctionCache } = await import('../ts/proxies/http-proxy/function-cache.js');
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const mockLogger = {
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debug: () => {},
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info: () => {},
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warn: () => {},
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error: () => {}
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};
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const cache = new FunctionCache(mockLogger as any);
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// Check that cleanup interval was set
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expect((cache as any).cleanupInterval).toBeTruthy();
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// Test destroy method
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cache.destroy();
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// Cleanup interval should be cleared
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expect((cache as any).cleanupInterval).toBeNull();
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console.log('✓ FunctionCache properly cleans up interval');
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console.log('\n=== Testing RequestHandler cleanup ===');
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const { RequestHandler } = await import('../ts/proxies/http-proxy/request-handler.js');
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const mockConnectionPool = {
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getConnection: () => null,
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releaseConnection: () => {}
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};
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const handler = new RequestHandler(
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{ logLevel: 'error' },
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mockConnectionPool as any
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);
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// Check that cleanup interval was set
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expect((handler as any).rateLimitCleanupInterval).toBeTruthy();
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// Test destroy method
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handler.destroy();
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// Cleanup interval should be cleared
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expect((handler as any).rateLimitCleanupInterval).toBeNull();
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console.log('✓ RequestHandler properly cleans up interval');
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console.log('\n✅ All memory leak fixes verified!');
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});
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tap.start();
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