/**
* Simple PackageCache test - demonstrates cache layer functionality
*/
import { dockerClient } from './docker/DockerClient.js';
import { Container } from './docker/Container.js';
import { PackageCache } from './core/PackageCache.js';
import { PythonRuntime } from './runtimes/PythonRuntime.js';
async function testPackageCache() {
console.log('🧪 Testing PackageCache (simplified demo)...\n');
console.log('=' .repeat(60));
const cache = PackageCache.getInstance();
const runtime = new PythonRuntime();
let container: Container | null = null;
try {
// 1. Clear cache
console.log('\n1️⃣ Clearing cache...');
await cache.clearCache();
let stats = await cache.getStats();
console.log(` ✅ Cache cleared`);
console.log(` 📊 Layers: ${stats.totalLayers}, Size: ${stats.sizeMB.toFixed(2)} MB`);
// 2. Create container
console.log('\n2️⃣ Creating Python container...');
const dockerContainer = await dockerClient.createContainer({
image: runtime.defaultImage,
language: 'python',
memory: '512m',
cpus: '1.0',
});
container = new Container(dockerContainer, 'python');
await container.start();
console.log(` ✅ Container: ${container.id.substring(0, 12)}`);
// 3. First install (cache miss expected)
console.log('\n3️⃣ Installing packages (cache miss expected)...');
const packages = ['requests', 'urllib3'];
const start1 = Date.now();
const result1 = await cache.install('python', packages, container, runtime);
const duration1 = Date.now() - start1;
console.log(` ${result1.success ? '✅' : '❌'} Success: ${result1.success}`);
console.log(` 📦 Cached: ${result1.cached ? 'YES' : 'NO (expected)'}`);
console.log(` ⏱️ Duration: ${duration1}ms`);
// 4. Check stats after first install
console.log('\n4️⃣ Cache stats after first install...');
stats = await cache.getStats();
console.log(` 📊 Total layers: ${stats.totalLayers}`);
console.log(` 📊 Hit rate: ${stats.hitRate.toFixed(1)}%`);
console.log(` 📊 Cache size: ${stats.sizeMB.toFixed(2)} MB`);
// 5. Second "install" with same packages (cache hit)
console.log('\n5️⃣ Second install attempt (cache hit expected)...');
const start2 = Date.now();
const result2 = await cache.install('python', packages, container, runtime);
const duration2 = Date.now() - start2;
console.log(` ${result2.success ? '✅' : '❌'} Success: ${result2.success}`);
console.log(` 📦 Cached: ${result2.cached ? 'YES (cache hit!)' : 'NO'}`);
console.log(` ⏱️ Duration: ${duration2}ms`);
console.log(` ⚡ Speedup: ${duration1}ms → ${duration2}ms`);
// 6. Different packages (cache miss)
console.log('\n6️⃣ Installing different packages (cache miss)...');
const packages2 = ['beautifulsoup4'];
const start3 = Date.now();
const result3 = await cache.install('python', packages2, container, runtime);
const duration3 = Date.now() - start3;
console.log(` ${result3.success ? '✅' : '❌'} Success: ${result3.success}`);
console.log(` 📦 Cached: ${result3.cached ? 'YES' : 'NO (expected)'}`);
console.log(` ⏱️ Duration: ${duration3}ms`);
// 7. Final stats
console.log('\n7️⃣ Final cache statistics...');
stats = await cache.getStats();
console.log(` 📊 Total layers: ${stats.totalLayers}`);
console.log(` 📊 Hit rate: ${stats.hitRate.toFixed(1)}%`);
console.log(` 📊 Cache size: ${stats.sizeMB.toFixed(2)} MB`);
const cacheSize = await cache.getCacheSize();
console.log(` 💾 Formatted size: ${cache.formatCacheSize(cacheSize)}`);
console.log('\n' + '='.repeat(60));
console.log('\n🎉 PackageCache test completed!\n');
console.log('Key takeaways:');
console.log(' - First install: Cache miss (installs packages)');
console.log(' - Same packages again: Cache hit (< 1ms)');
console.log(' - Different packages: Cache miss (installs)');
console.log(' - Cache tracks installations and creates Docker layers');
console.log('');
} catch (error: any) {
console.error('\n❌ Test failed:', error.message);
if (error.stack) {
console.error(error.stack);
}
process.exit(1);
} finally {
if (container) {
console.log('🧹 Cleaning up...');
try {
await container.stop();
await container.remove();
console.log(' ✅ Container removed\n');
} catch (error: any) {
console.error(' ⚠️ Cleanup error:', error.message);
}
}
}
}
testPackageCache();
