514a65e453
* perf(backend): avoid N+1 selects from `user` table when packing many entities * perf(backend): use `packMany` instead of mapping to `pack`
58 lines
1.9 KiB
TypeScript
58 lines
1.9 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { Inject, Injectable } from '@nestjs/common';
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import { DI } from '@/di-symbols.js';
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import type { BlockingsRepository } from '@/models/_.js';
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import { awaitAll } from '@/misc/prelude/await-all.js';
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import type { Packed } from '@/misc/json-schema.js';
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import type { MiBlocking } from '@/models/Blocking.js';
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import type { MiUser } from '@/models/User.js';
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import { bindThis } from '@/decorators.js';
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import { IdService } from '@/core/IdService.js';
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import { UserEntityService } from './UserEntityService.js';
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@Injectable()
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export class BlockingEntityService {
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constructor(
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@Inject(DI.blockingsRepository)
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private blockingsRepository: BlockingsRepository,
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private userEntityService: UserEntityService,
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private idService: IdService,
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) {
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}
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@bindThis
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public async pack(
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src: MiBlocking['id'] | MiBlocking,
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me?: { id: MiUser['id'] } | null | undefined,
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hint?: {
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blockee?: Packed<'UserDetailedNotMe'>,
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},
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): Promise<Packed<'Blocking'>> {
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const blocking = typeof src === 'object' ? src : await this.blockingsRepository.findOneByOrFail({ id: src });
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return await awaitAll({
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id: blocking.id,
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createdAt: this.idService.parse(blocking.id).date.toISOString(),
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blockeeId: blocking.blockeeId,
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blockee: hint?.blockee ?? this.userEntityService.pack(blocking.blockeeId, me, {
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schema: 'UserDetailedNotMe',
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}),
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});
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}
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@bindThis
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public async packMany(
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blockings: MiBlocking[],
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me: { id: MiUser['id'] },
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) {
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const _blockees = blockings.map(({ blockee, blockeeId }) => blockee ?? blockeeId);
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const _userMap = await this.userEntityService.packMany(_blockees, me, { schema: 'UserDetailedNotMe' })
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.then(users => new Map(users.map(u => [u.id, u])));
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return Promise.all(blockings.map(blocking => this.pack(blocking, me, { blockee: _userMap.get(blocking.blockeeId) })));
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}
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}
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