1 files changed, 112 insertions, 0 deletions
diff --git a/packages/backend/src/core/QueueModule.ts b/packages/backend/src/core/QueueModule.ts
new file mode 100644
index 0000000000..edd843977b
--- /dev/null
+++ b/packages/backend/src/core/QueueModule.ts
@@ -0,0 +1,112 @@
+import { Module } from '@nestjs/common';
+import Bull from 'bull';
+import { DI } from '@/di-symbols.js';
+import type { Config } from '@/config.js';
+import type { Provider } from '@nestjs/common';
+import type { DeliverJobData, InboxJobData, DbJobData, ObjectStorageJobData, EndedPollNotificationJobData, WebhookDeliverJobData } from '../queue/types.js';
+
+function q<T>(config: Config, name: string, limitPerSec = -1) {
+	return new Bull<T>(name, {
+		redis: {
+			port: config.redis.port,
+			host: config.redis.host,
+			family: config.redis.family == null ? 0 : config.redis.family,
+			password: config.redis.pass,
+			db: config.redis.db ?? 0,
+		},
+		prefix: config.redis.prefix ? `${config.redis.prefix}:queue` : 'queue',
+		limiter: limitPerSec > 0 ? {
+			max: limitPerSec,
+			duration: 1000,
+		} : undefined,
+		settings: {
+			backoffStrategies: {
+				apBackoff,
+			},
+		},
+	});
+}
+
+// ref. https://github.com/misskey-dev/misskey/pull/7635#issue-971097019
+function apBackoff(attemptsMade: number, err: Error) {
+	const baseDelay = 60 * 1000;	// 1min
+	const maxBackoff = 8 * 60 * 60 * 1000;	// 8hours
+	let backoff = (Math.pow(2, attemptsMade) - 1) * baseDelay;
+	backoff = Math.min(backoff, maxBackoff);
+	backoff += Math.round(backoff * Math.random() * 0.2);
+	return backoff;
+}
+
+export type SystemQueue = Bull.Queue<Record<string, unknown>>;
+export type EndedPollNotificationQueue = Bull.Queue<EndedPollNotificationJobData>;
+export type DeliverQueue = Bull.Queue<DeliverJobData>;
+export type InboxQueue = Bull.Queue<InboxJobData>;
+export type DbQueue = Bull.Queue<DbJobData>;
+export type ObjectStorageQueue = Bull.Queue<ObjectStorageJobData>;
+export type WebhookDeliverQueue = Bull.Queue<WebhookDeliverJobData>;
+
+const $system: Provider = {
+	provide: 'queue:system',
+	useFactory: (config: Config) => q(config, 'system'),
+	inject: [DI.config],
+};
+
+const $endedPollNotification: Provider = {
+	provide: 'queue:endedPollNotification',
+	useFactory: (config: Config) => q(config, 'endedPollNotification'),
+	inject: [DI.config],
+};
+
+const $deliver: Provider = {
+	provide: 'queue:deliver',
+	useFactory: (config: Config) => q(config, 'deliver', config.deliverJobPerSec ?? 128),
+	inject: [DI.config],
+};
+
+const $inbox: Provider = {
+	provide: 'queue:inbox',
+	useFactory: (config: Config) => q(config, 'inbox', config.inboxJobPerSec ?? 16),
+	inject: [DI.config],
+};
+
+const $db: Provider = {
+	provide: 'queue:db',
+	useFactory: (config: Config) => q(config, 'db'),
+	inject: [DI.config],
+};
+
+const $objectStorage: Provider = {
+	provide: 'queue:objectStorage',
+	useFactory: (config: Config) => q(config, 'objectStorage'),
+	inject: [DI.config],
+};
+
+const $webhookDeliver: Provider = {
+	provide: 'queue:webhookDeliver',
+	useFactory: (config: Config) => q(config, 'webhookDeliver', 64),
+	inject: [DI.config],
+};
+
+@Module({
+	imports: [
+	],
+	providers: [
+		$system,
+		$endedPollNotification,
+		$deliver,
+		$inbox,
+		$db,
+		$objectStorage,
+		$webhookDeliver,
+	],
+	exports: [
+		$system,
+		$endedPollNotification,
+		$deliver,
+		$inbox,
+		$db,
+		$objectStorage,
+		$webhookDeliver,
+	],
+})
+export class QueueModule {}