server: fix restarted job retaining the right mode

When a web or queue worker exited unexpectedly, the new restarted worker would
not have any mode set and so would try to do web and queue worker stuff at the
same time, which was not the intended behaviour.

Changelog: Fixed

packages/backend/src/boot/index.ts

@@ -1,5 +1,4 @@
 import cluster from 'node:cluster';
-import chalk from 'chalk';
 import Xev from 'xev';
 
 import Logger from '@/services/logger.js';
@@ -57,14 +56,6 @@ cluster.on('online', worker => {
 	clusterLogger.debug(`Process is now online: [${worker.id}]`);
 });
 
-// Listen for dying workers
-cluster.on('exit', worker => {
-	// Replace the dead worker,
-	// we're not sentimental
-	clusterLogger.error(chalk.red(`[${worker.id}] died :(`));
-	cluster.fork();
-});
-
 // Display detail of unhandled promise rejection
 if (envOption.logLevel !== LOG_LEVELS.quiet) {
 	process.on('unhandledRejection', console.dir);

packages/backend/src/boot/master.ts

@@ -168,6 +168,10 @@ async function spawnWorkers(clusterLimits: Required<Config['clusterLimits']>): P
 function spawnWorker(mode: 'web' | 'queue'): Promise<void> {
 	return new Promise(res => {
 		const worker = cluster.fork({ mode });
+		worker.on('exit', async (code, signal) => {
+			logger.error(mode + ' worker died, restarting...');
+			await spawnWorker(mode);
+		});
 		worker.on('message', message => {
 			switch (message) {
 				case 'listenFailed':