nandi.uk
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refactor: introduce IProcess interface and separate process implementations
Co-authored-by: aider (anthropic/claude-sonnet-4-20250514) <aider@aider.chat>
author
Wesley Finck
co-author
aider (anthropic/claude-sonnet-4-20250514)
date
(Aug 11, 2025, 3:13 PM -0700)
commit
81c1c05b
81c1c05b325a698a9bc3f953fe5ae99e126cf844
parent
7109ae2d
7109ae2d24e966325b9bbd35479622bf656c884d
+144
-110
+10
-36
src/index.ts
+10
-36
src/index.ts
···
1
-
import { createExpressApp } from './shared/infrastructure/http/app';
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import { DatabaseFactory } from './shared/infrastructure/database/DatabaseFactory';
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import { configService } from './shared/infrastructure/config';
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import { startFeedWorker } from './workers/feed-worker';
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async function startServer() {
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// Get configuration
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const config = configService.get();
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const useMockRepos = process.env.USE_MOCK_REPOS === 'true';
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if (!useMockRepos) {
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// Create database connection with config
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const db = DatabaseFactory.createConnection(
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configService.getDatabaseConfig(),
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);
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// Run migrations
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try {
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await DatabaseFactory.runMigrations(db);
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console.log('Database migrations completed successfully');
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} catch (error) {
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console.error('Error running database migrations:', error);
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process.exit(1);
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}
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}
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import { AppProcess } from './shared/infrastructure/processes/AppProcess';
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import { FeedWorkerProcess } from './shared/infrastructure/processes/FeedWorkerProcess';
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// Create and start Express app with config
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const app = createExpressApp(configService);
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const PORT = config.server.port;
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const HOST = config.server.host;
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async function main() {
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const appProcess = new AppProcess(configService);
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app.listen(PORT, HOST, () => {
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console.log(
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`Server running on http://${HOST}:${PORT} in ${config.environment} environment`,
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);
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});
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// Start the app process
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await appProcess.start();
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// Start feed worker in the same process if using in-memory events
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const useInMemoryEvents = process.env.USE_IN_MEMORY_EVENTS === 'true';
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if (useInMemoryEvents) {
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console.log('Starting feed worker in the same process...');
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await startFeedWorker();
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const feedWorkerProcess = new FeedWorkerProcess(configService);
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await feedWorkerProcess.start();
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}
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}
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startServer().catch((error) => {
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console.error('Failed to start server:', error);
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main().catch((error) => {
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console.error('Failed to start application:', error);
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process.exit(1);
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});
+6
-74
src/workers/feed-worker.ts
+6
-74
src/workers/feed-worker.ts
···
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import { EnvironmentConfigService } from '../shared/infrastructure/config/EnvironmentConfigService';
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import { RepositoryFactory } from '../shared/infrastructure/http/factories/RepositoryFactory';
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import { ServiceFactory } from '../shared/infrastructure/http/factories/ServiceFactory';
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import { UseCaseFactory } from '../shared/infrastructure/http/factories/UseCaseFactory';
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import { CardAddedToLibraryEventHandler } from '../modules/feeds/application/eventHandlers/CardAddedToLibraryEventHandler';
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import { CardAddedToCollectionEventHandler } from '../modules/feeds/application/eventHandlers/CardAddedToCollectionEventHandler';
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import { CardCollectionSaga } from '../modules/feeds/application/sagas/CardCollectionSaga';
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import { QueueNames } from '../shared/infrastructure/events/QueueConfig';
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import { EventNames } from '../shared/infrastructure/events/EventConfig';
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export async function startFeedWorker() {
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console.log('Starting feed worker...');
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import { FeedWorkerProcess } from '../shared/infrastructure/processes/FeedWorkerProcess';
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async function main() {
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const configService = new EnvironmentConfigService();
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// Create dependencies using factories
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const repositories = RepositoryFactory.create(configService);
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const services = ServiceFactory.createForWorker(configService, repositories);
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const useCases = UseCaseFactory.createForWorker(repositories, services);
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// Test Redis connection (only if using Redis)
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if (services.redisConnection) {
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try {
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await services.redisConnection.ping();
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console.log('Connected to Redis successfully');
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} catch (error) {
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console.error('Failed to connect to Redis:', error);
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process.exit(1);
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}
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} else {
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console.log('Using in-memory event system');
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}
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// Create subscriber for feeds queue
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const eventSubscriber = services.createEventSubscriber(QueueNames.FEEDS);
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// Create the saga with proper dependencies
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const cardCollectionSaga = new CardCollectionSaga(
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useCases.addActivityToFeedUseCase,
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);
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// Create event handlers with the saga
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const cardAddedToLibraryHandler = new CardAddedToLibraryEventHandler(
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cardCollectionSaga,
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);
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const cardAddedToCollectionHandler = new CardAddedToCollectionEventHandler(
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cardCollectionSaga,
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);
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// Register handlers
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await eventSubscriber.subscribe(
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EventNames.CARD_ADDED_TO_LIBRARY,
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cardAddedToLibraryHandler,
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);
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await eventSubscriber.subscribe(
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EventNames.CARD_ADDED_TO_COLLECTION,
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cardAddedToCollectionHandler,
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);
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// Start the worker
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await eventSubscriber.start();
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console.log('Feed worker started and listening for events...');
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// Graceful shutdown
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const shutdown = async () => {
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console.log('Shutting down feed worker...');
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await eventSubscriber.stop();
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if (services.redisConnection) {
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await services.redisConnection.quit();
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}
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process.exit(0);
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};
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const feedWorkerProcess = new FeedWorkerProcess(configService);
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process.on('SIGTERM', shutdown);
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process.on('SIGINT', shutdown);
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await feedWorkerProcess.start();
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}
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+
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if (process.env.USE_IN_MEMORY_EVENTS !== 'true') {
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startFeedWorker().catch((error) => {
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main().catch((error) => {
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console.error('Failed to start feed worker:', error);
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process.exit(1);
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});