feat: harden containers and ci

backend/src/config/index.js

@@ -39,6 +39,11 @@ const config = {
   rateLimit: {
     windowMs: optionalNumber(process.env.RATE_LIMIT_WINDOW_MS, 15 * 60 * 1000),
     max: optionalNumber(process.env.RATE_LIMIT_MAX, 100)
+  },
+  db: {
+    max: optionalNumber(process.env.DB_POOL_MAX, 10),
+    idleTimeoutMillis: optionalNumber(process.env.DB_POOL_IDLE_MS, 30000),
+    connectionTimeoutMillis: optionalNumber(process.env.DB_POOL_CONNECTION_TIMEOUT_MS, 5000)
   }
 };
 

backend/src/database/connection.js

@@ -3,7 +3,10 @@ const config = require('../config');
 
 const pool = new Pool({
   connectionString: config.databaseUrl,
-  ssl: config.env === 'production' ? { rejectUnauthorized: false } : false
+  ssl: config.env === 'production' ? { rejectUnauthorized: false } : false,
+  max: config.db.max,
+  idleTimeoutMillis: config.db.idleTimeoutMillis,
+  connectionTimeoutMillis: config.db.connectionTimeoutMillis
 });
 
 // Test database connection

backend/src/index.js

@@ -1,6 +1,45 @@
 const app = require('./server');
 const config = require('./config');
+const pool = require('./database/connection');
 
-app.listen(config.port, config.host, () => {
+const server = app.listen(config.port, config.host, () => {
   console.info(`MerchantsOfHope-SupplyANdDemandPortal backend server running on ${config.host}:${config.port}`);
 });
+
+let terminating = false;
+
+async function shutdown(reason, exitCode = 0) {
+  if (terminating) {
+    return;
+  }
+
+  terminating = true;
+  console.info(`Shutting down server (${reason})`);
+
+  try {
+    await new Promise((resolve) => {
+      server.close(resolve);
+    });
+    await pool.end();
+    console.info('Server shutdown complete.');
+  } catch (error) {
+    console.error('Error during shutdown:', error);
+    exitCode = exitCode || 1;
+  } finally {
+    process.exit(exitCode);
+  }
+}
+
+['SIGTERM', 'SIGINT'].forEach((signal) => {
+  process.on(signal, () => shutdown(signal));
+});
+
+process.on('unhandledRejection', (reason) => {
+  console.error('Unhandled promise rejection:', reason);
+  shutdown('unhandledRejection', 1);
+});
+
+process.on('uncaughtException', (error) => {
+  console.error('Uncaught exception:', error);
+  shutdown('uncaughtException', 1);
+});