refactor: use TRANSIENT scope to avoid service bucket relay (#16985)

* refactor: use TRANSIENT scope to avoid service bucket relay

* lint: fix lints

* refactor: use transient for apResolver

* Update packages/backend/src/core/activitypub/models/ApImageService.ts

* fix

7 files changed, 48 insertions, 65 deletions

diff --git a/packages/backend/src/core/CoreModule.ts b/packages/backend/src/core/CoreModule.ts
index 87575ca59a..f075671d93 100644
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -141,7 +141,7 @@ import { ApLoggerService } from './activitypub/ApLoggerService.js';
 import { ApMfmService } from './activitypub/ApMfmService.js';
 import { ApRendererService } from './activitypub/ApRendererService.js';
 import { ApRequestService } from './activitypub/ApRequestService.js';
-import { ApResolverService } from './activitypub/ApResolverService.js';
+import { ApResolverService, Resolver } from './activitypub/ApResolverService.js';
 import { JsonLdService } from './activitypub/JsonLdService.js';
 import { RemoteLoggerService } from './RemoteLoggerService.js';
 import { RemoteUserResolveService } from './RemoteUserResolveService.js';
@@ -447,6 +447,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		ApRendererService,
 		ApRequestService,
 		ApResolverService,
+		Resolver,
 		JsonLdService,
 		RemoteLoggerService,
 		RemoteUserResolveService,
@@ -745,6 +746,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		ApRendererService,
 		ApRequestService,
 		ApResolverService,
+		Resolver,
 		JsonLdService,
 		RemoteLoggerService,
 		RemoteUserResolveService,
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index 81637580e3..ff47ca930d 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -95,7 +95,7 @@ export class ApInboxService {
 		if (isCollectionOrOrderedCollection(activity)) {
 			const results = [] as [string, string | void][];
 			// eslint-disable-next-line no-param-reassign
-			resolver ??= this.apResolverService.createResolver();
+			resolver ??= await this.apResolverService.createResolver();
 
 			const items = toArray(isCollection(activity) ? activity.items : activity.orderedItems);
 			if (items.length >= resolver.getRecursionLimit()) {
@@ -221,7 +221,7 @@ export class ApInboxService {
 		this.logger.info(`Accept: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(err => {
 			this.logger.error(`Resolution failed: ${err}`);
@@ -284,7 +284,7 @@ export class ApInboxService {
 		this.logger.info(`Announce: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		if (!activity.object) return 'skip: activity has no object property';
 		const targetUri = getApId(activity.object);
@@ -406,7 +406,7 @@ export class ApInboxService {
 		}
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -575,7 +575,7 @@ export class ApInboxService {
 		this.logger.info(`Reject: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -642,7 +642,7 @@ export class ApInboxService {
 		this.logger.info(`Undo: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -774,7 +774,7 @@ export class ApInboxService {
 		this.logger.debug('Update');
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
diff --git a/packages/backend/src/core/activitypub/ApResolverService.ts b/packages/backend/src/core/activitypub/ApResolverService.ts
index 646150455b..0f51b1ce8d 100644
--- a/packages/backend/src/core/activitypub/ApResolverService.ts
+++ b/packages/backend/src/core/activitypub/ApResolverService.ts
@@ -3,10 +3,17 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { IsNull, Not } from 'typeorm';
 import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
-import type { NotesRepository, PollsRepository, NoteReactionsRepository, UsersRepository, FollowRequestsRepository, MiMeta } from '@/models/_.js';
+import type {
+	FollowRequestsRepository,
+	MiMeta,
+	NoteReactionsRepository,
+	NotesRepository,
+	PollsRepository,
+	UsersRepository
+} from '@/models/_.js';
 import type { Config } from '@/config.js';
 import { HttpRequestService } from '@/core/HttpRequestService.js';
 import { DI } from '@/di-symbols.js';
@@ -16,26 +23,43 @@ import { LoggerService } from '@/core/LoggerService.js';
 import type Logger from '@/logger.js';
 import { SystemAccountService } from '@/core/SystemAccountService.js';
 import { IdentifiableError } from '@/misc/identifiable-error.js';
+import type { ICollection, IObject, IOrderedCollection } from './type.js';
 import { isCollectionOrOrderedCollection } from './type.js';
 import { ApDbResolverService } from './ApDbResolverService.js';
 import { ApRendererService } from './ApRendererService.js';
 import { ApRequestService } from './ApRequestService.js';
 import { FetchAllowSoftFailMask } from './misc/check-against-url.js';
-import type { IObject, ICollection, IOrderedCollection } from './type.js';
+import { ModuleRef } from '@nestjs/core';
 
+@Injectable({ scope: Scope.TRANSIENT })
 export class Resolver {
 	private history: Set<string>;
 	private user?: MiLocalUser;
 	private logger: Logger;
+	private recursionLimit = 256;
 
 	constructor(
+		@Inject(DI.config)
 		private config: Config,
+
+		@Inject(DI.meta)
 		private meta: MiMeta,
+
+		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
+
+		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
+
+		@Inject(DI.pollsRepository)
 		private pollsRepository: PollsRepository,
+
+		@Inject(DI.noteReactionsRepository)
 		private noteReactionsRepository: NoteReactionsRepository,
+
+		@Inject(DI.followRequestsRepository)
 		private followRequestsRepository: FollowRequestsRepository,
+
 		private utilityService: UtilityService,
 		private systemAccountService: SystemAccountService,
 		private apRequestService: ApRequestService,
@@ -43,7 +67,6 @@ export class Resolver {
 		private apRendererService: ApRendererService,
 		private apDbResolverService: ApDbResolverService,
 		private loggerService: LoggerService,
-		private recursionLimit = 256,
 	) {
 		this.history = new Set();
 		this.logger = this.loggerService.getLogger('ap-resolve');
@@ -180,54 +203,12 @@ export class Resolver {
 @Injectable()
 export class ApResolverService {
 	constructor(
-		@Inject(DI.config)
-		private config: Config,
-
-		@Inject(DI.meta)
-		private meta: MiMeta,
-
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		@Inject(DI.notesRepository)
-		private notesRepository: NotesRepository,
-
-		@Inject(DI.pollsRepository)
-		private pollsRepository: PollsRepository,
-
-		@Inject(DI.noteReactionsRepository)
-		private noteReactionsRepository: NoteReactionsRepository,
-
-		@Inject(DI.followRequestsRepository)
-		private followRequestsRepository: FollowRequestsRepository,
-
-		private utilityService: UtilityService,
-		private systemAccountService: SystemAccountService,
-		private apRequestService: ApRequestService,
-		private httpRequestService: HttpRequestService,
-		private apRendererService: ApRendererService,
-		private apDbResolverService: ApDbResolverService,
-		private loggerService: LoggerService,
+		private moduleRef: ModuleRef,
 	) {
 	}
 
 	@bindThis
-	public createResolver(): Resolver {
-		return new Resolver(
-			this.config,
-			this.meta,
-			this.usersRepository,
-			this.notesRepository,
-			this.pollsRepository,
-			this.noteReactionsRepository,
-			this.followRequestsRepository,
-			this.utilityService,
-			this.systemAccountService,
-			this.apRequestService,
-			this.httpRequestService,
-			this.apRendererService,
-			this.apDbResolverService,
-			this.loggerService,
-		);
+	public async createResolver(): Promise<Resolver> {
+		return await this.moduleRef.create(Resolver);
 	}
 }
diff --git a/packages/backend/src/core/activitypub/models/ApImageService.ts b/packages/backend/src/core/activitypub/models/ApImageService.ts
index e7ece87b01..0496774c19 100644
--- a/packages/backend/src/core/activitypub/models/ApImageService.ts
+++ b/packages/backend/src/core/activitypub/models/ApImageService.ts
@@ -46,7 +46,7 @@ export class ApImageService {
 			throw new Error('actor has been suspended');
 		}
 
-		const image = await this.apResolverService.createResolver().resolve(value);
+		const image = await (await this.apResolverService.createResolver()).resolve(value);
 
 		if (!isDocument(image)) return null;
 
diff --git a/packages/backend/src/core/activitypub/models/ApNoteService.ts b/packages/backend/src/core/activitypub/models/ApNoteService.ts
index 214d32f67f..1fc5728c98 100644
--- a/packages/backend/src/core/activitypub/models/ApNoteService.ts
+++ b/packages/backend/src/core/activitypub/models/ApNoteService.ts
@@ -128,7 +128,7 @@ export class ApNoteService {
 	@bindThis
 	public async createNote(value: string | IObject, actor?: MiRemoteUser, resolver?: Resolver, silent = false): Promise<MiNote | null> {
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(value);
 
diff --git a/packages/backend/src/core/activitypub/models/ApPersonService.ts b/packages/backend/src/core/activitypub/models/ApPersonService.ts
index e52078ed0f..ebe8e9c964 100644
--- a/packages/backend/src/core/activitypub/models/ApPersonService.ts
+++ b/packages/backend/src/core/activitypub/models/ApPersonService.ts
@@ -310,7 +310,7 @@ export class ApPersonService implements OnModuleInit {
 		}
 
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(uri);
 		if (object.id == null) throw new Error('invalid object.id: ' + object.id);
@@ -500,7 +500,7 @@ export class ApPersonService implements OnModuleInit {
 		//#endregion
 
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = hint ?? await resolver.resolve(uri);
 
@@ -678,7 +678,7 @@ export class ApPersonService implements OnModuleInit {
 
 		// リモートサーバーからフェッチしてきて登録
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 		return await this.createPerson(uri, resolver);
 	}
 
@@ -707,7 +707,7 @@ export class ApPersonService implements OnModuleInit {
 
 		this.logger.info(`Updating the featured: ${user.uri}`);
 
-		const _resolver = resolver ?? this.apResolverService.createResolver();
+		const _resolver = resolver ?? await this.apResolverService.createResolver();
 
 		// Resolve to (Ordered)Collection Object
 		const collection = await _resolver.resolveCollection(user.featured);
diff --git a/packages/backend/src/core/activitypub/models/ApQuestionService.ts b/packages/backend/src/core/activitypub/models/ApQuestionService.ts
index a2cdaf02ca..8ac2f21e26 100644
--- a/packages/backend/src/core/activitypub/models/ApQuestionService.ts
+++ b/packages/backend/src/core/activitypub/models/ApQuestionService.ts
@@ -45,7 +45,7 @@ export class ApQuestionService {
 	@bindThis
 	public async extractPollFromQuestion(source: string | IObject, resolver?: Resolver): Promise<IPoll> {
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const question = await resolver.resolve(source);
 		if (!isQuestion(question)) throw new Error('invalid type');
@@ -91,7 +91,7 @@ export class ApQuestionService {
 
 		// resolve new Question object
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 		const question = await resolver.resolve(value);
 		this.logger.debug(`fetched question: ${JSON.stringify(question, null, 2)}`);