なんかもうめっちゃ変えた

packages/backend/src/daemons/QueueStatsService.ts

@@ -0,0 +1,77 @@
+import { Inject, Injectable } from '@nestjs/common';
+import Xev from 'xev';
+import { DI } from '@/di-symbols.js';
+import { QueueService } from '@/core/QueueService.js';
+import type { OnApplicationShutdown } from '@nestjs/common';
+
+const ev = new Xev();
+
+const interval = 10000;
+
+@Injectable()
+export class QueueStatsService implements OnApplicationShutdown {
+	#intervalId: NodeJS.Timer;
+
+	constructor(
+		private queueService: QueueService,
+	) {
+	}
+
+	/**
+	 * Report queue stats regularly
+	 */
+	public start(): void {
+		const log = [] as any[];
+
+		ev.on('requestQueueStatsLog', x => {
+			ev.emit(`queueStatsLog:${x.id}`, log.slice(0, x.length ?? 50));
+		});
+
+		let activeDeliverJobs = 0;
+		let activeInboxJobs = 0;
+
+		this.queueService.deliverQueue.on('global:active', () => {
+			activeDeliverJobs++;
+		});
+
+		this.queueService.inboxQueue.on('global:active', () => {
+			activeInboxJobs++;
+		});
+
+		const tick = async () => {
+			const deliverJobCounts = await this.queueService.deliverQueue.getJobCounts();
+			const inboxJobCounts = await this.queueService.inboxQueue.getJobCounts();
+
+			const stats = {
+				deliver: {
+					activeSincePrevTick: activeDeliverJobs,
+					active: deliverJobCounts.active,
+					waiting: deliverJobCounts.waiting,
+					delayed: deliverJobCounts.delayed,
+				},
+				inbox: {
+					activeSincePrevTick: activeInboxJobs,
+					active: inboxJobCounts.active,
+					waiting: inboxJobCounts.waiting,
+					delayed: inboxJobCounts.delayed,
+				},
+			};
+
+			ev.emit('queueStats', stats);
+
+			log.unshift(stats);
+			if (log.length > 200) log.pop();
+
+			activeDeliverJobs = 0;
+			activeInboxJobs = 0;
+		};
+
+		tick();
+
+		this.#intervalId = setInterval(tick, interval);
+	}
+
+	public onApplicationShutdown(signal?: string | undefined) {
+		clearInterval(this.#intervalId);
+	}
+}