refactor/perf(backend): provide metadata statically (#14601)

* wip

* Update ReactionService.ts

* Update ApiCallService.ts

* Update timeline.ts

* Update GlobalModule.ts

* Update GlobalModule.ts

* Update NoteEntityService.ts

* wip

* wip

* wip

* Update ApPersonService.ts

* wip

* Update GlobalModule.ts

* Update mock-resolver.ts

* Update RoleService.ts

* Update activitypub.ts

* Update activitypub.ts

* Update activitypub.ts

* Update activitypub.ts

* Update activitypub.ts

* clean up

* Update utils.ts

* Update UtilityService.ts

* Revert "Update utils.ts"

This reverts commit a27d4be764.

* Revert "Update UtilityService.ts"

This reverts commit e5fd9e004c.

* vuwa-

* Revert "vuwa-"

This reverts commit 0c3bd12472.

* Update entry.ts

* Update entry.ts

* Update entry.ts

* Update entry.ts

* Update jest.setup.ts

packages/backend/src/GlobalModule.ts

@@ -13,6 +13,8 @@ import { createPostgresDataSource } from './postgres.js';
 import { RepositoryModule } from './models/RepositoryModule.js';
 import { allSettled } from './misc/promise-tracker.js';
 import type { Provider, OnApplicationShutdown } from '@nestjs/common';
+import { MiMeta } from '@/models/Meta.js';
+import { GlobalEvents } from './core/GlobalEventService.js';
 
 const $config: Provider = {
 	provide: DI.config,
@@ -86,11 +88,68 @@ const $redisForReactions: Provider = {
 	inject: [DI.config],
 };
 
+const $meta: Provider = {
+	provide: DI.meta,
+	useFactory: async (db: DataSource, redisForSub: Redis.Redis) => {
+		const meta = await db.transaction(async transactionalEntityManager => {
+			// 過去のバグでレコードが複数出来てしまっている可能性があるので新しいIDを優先する
+			const metas = await transactionalEntityManager.find(MiMeta, {
+				order: {
+					id: 'DESC',
+				},
+			});
+
+			const meta = metas[0];
+
+			if (meta) {
+				return meta;
+			} else {
+				// metaが空のときfetchMetaが同時に呼ばれるとここが同時に呼ばれてしまうことがあるのでフェイルセーフなupsertを使う
+				const saved = await transactionalEntityManager
+					.upsert(
+						MiMeta,
+						{
+							id: 'x',
+						},
+						['id'],
+					)
+					.then((x) => transactionalEntityManager.findOneByOrFail(MiMeta, x.identifiers[0]));
+
+				return saved;
+			}
+		});
+
+		async function onMessage(_: string, data: string): Promise<void> {
+			const obj = JSON.parse(data);
+
+			if (obj.channel === 'internal') {
+				const { type, body } = obj.message as GlobalEvents['internal']['payload'];
+				switch (type) {
+					case 'metaUpdated': {
+						for (const key in body) {
+							(meta as any)[key] = (body as any)[key];
+						}
+						meta.proxyAccount = null; // joinなカラムは通常取ってこないので
+						break;
+					}
+					default:
+						break;
+				}
+			}
+		}
+
+		redisForSub.on('message', onMessage);
+
+		return meta;
+	},
+	inject: [DI.db, DI.redisForSub],
+};
+
 @Global()
 @Module({
 	imports: [RepositoryModule],
-	providers: [$config, $db, $meilisearch, $redis, $redisForPub, $redisForSub, $redisForTimelines, $redisForReactions],
-	exports: [$config, $db, $meilisearch, $redis, $redisForPub, $redisForSub, $redisForTimelines, $redisForReactions, RepositoryModule],
+	providers: [$config, $db, $meta, $meilisearch, $redis, $redisForPub, $redisForSub, $redisForTimelines, $redisForReactions],
+	exports: [$config, $db, $meta, $meilisearch, $redis, $redisForPub, $redisForSub, $redisForTimelines, $redisForReactions, RepositoryModule],
 })
 export class GlobalModule implements OnApplicationShutdown {
 	constructor(