perf(backend): createdAtをidから取得するように & 無駄なDateインスタンスの生成を避けるように

packages/backend/src/queue/processors/ExportNotesProcessorService.ts

@@ -17,6 +17,7 @@ import type { MiNote } from '@/models/Note.js';
 import { bindThis } from '@/decorators.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
 import { Packed } from '@/misc/json-schema.js';
+import { IdService } from '@/core/IdService.js';
 import { QueueLoggerService } from '../QueueLoggerService.js';
 import type * as Bull from 'bullmq';
 import type { DbJobDataWithUser } from '../types.js';
@@ -37,8 +38,8 @@ export class ExportNotesProcessorService {
 
 		private driveService: DriveService,
 		private queueLoggerService: QueueLoggerService,
-
 		private driveFileEntityService: DriveFileEntityService,
+		private idService: IdService,
 	) {
 		this.logger = this.queueLoggerService.logger.createSubLogger('export-notes');
 	}
@@ -103,7 +104,7 @@ export class ExportNotesProcessorService {
 						poll = await this.pollsRepository.findOneByOrFail({ noteId: note.id });
 					}
 					const files = await this.driveFileEntityService.packManyByIds(note.fileIds);
-					const content = JSON.stringify(serialize(note, poll, files));
+					const content = JSON.stringify(this.serialize(note, poll, files));
 					const isFirst = exportedNotesCount === 0;
 					await write(isFirst ? content : ',\n' + content);
 					exportedNotesCount++;
@@ -129,22 +130,22 @@ export class ExportNotesProcessorService {
 			cleanup();
 		}
 	}
-}
 
-function serialize(note: MiNote, poll: MiPoll | null = null, files: Packed<'DriveFile'>[]): Record<string, unknown> {
-	return {
-		id: note.id,
-		text: note.text,
-		createdAt: note.createdAt,
-		fileIds: note.fileIds,
-		files: files,
-		replyId: note.replyId,
-		renoteId: note.renoteId,
-		poll: poll,
-		cw: note.cw,
-		visibility: note.visibility,
-		visibleUserIds: note.visibleUserIds,
-		localOnly: note.localOnly,
-		reactionAcceptance: note.reactionAcceptance,
-	};
+	private serialize(note: MiNote, poll: MiPoll | null = null, files: Packed<'DriveFile'>[]): Record<string, unknown> {
+		return {
+			id: note.id,
+			text: note.text,
+			createdAt: this.idService.parse(note.id).date.toISOString(),
+			fileIds: note.fileIds,
+			files: files,
+			replyId: note.replyId,
+			renoteId: note.renoteId,
+			poll: poll,
+			cw: note.cw,
+			visibility: note.visibility,
+			visibleUserIds: note.visibleUserIds,
+			localOnly: note.localOnly,
+			reactionAcceptance: note.reactionAcceptance,
+		};
+	}
 }