createWorkspaceMembers 도 transaction 걸어줘야 하나요?

안녕하세요 이장우 닮은 제로초 선생님,

// workspaces.service.ts

async createWorkspaceMembers(url: string, email: string) {
    const workspace = await this.workspacesRepository.findOne({
      where: { url },
      relations: ['Channels'],
    });

    // queryBuilder 버전
    this.workspacesRepository
      .createQueryBuilder('workspaces')
      // typeorm은 innerJoin 하면 join한 테이블은 가져오지 않는데,
      // innerJoinAndSelect을 하면 join한 테이블을 다 가져온다.
      .innerJoinAndSelect('workspaces.Channels', 'channels')
      .getOne();

    const user = await this.usersRepository.findOne({ where: { email } });
    if (!user) return null;

    const workspaceMember = new WorkspaceMembers();
    workspaceMember.WorkspaceId = workspace.id;
    workspaceMember.UserId = user.id;
    await this.workspaceMembersRepository.save(workspaceMember);

    const channelMember = new ChannelMembers();
    channelMember.ChannelId = workspace.Channels.find(
      (v) => v.name === '일반',
    ).id;
    channelMember.UserId = user.id;
    await this.channelMembersRepository.save(channelMember);
  }

강의에서 위와 같이 createWorkspaceMembers 를 작성하셨는데, 여기도 transaction을 걸어주는게 낫겠죠?

걸어주는게 맞다면, 아래와 같이 하면 되나요?

 async createWorkspaceMembers(url: string, email: string) {
    const queryRunner = this.dataSource.createQueryRunner();
    await queryRunner.connect();
    await queryRunner.startTransaction();
  
    try {
      const workspace = await queryRunner.manager.findOne(Workspaces, {
        where: { url },
        relations: ['Channels'],
      });
  
      const user = await queryRunner.manager.findOne(Users, { where: { email } });
      if (!user) return null;
  
      const workspaceMember = new WorkspaceMembers();
      workspaceMember.WorkspaceId = workspace.id;
      workspaceMember.UserId = user.id;
      await queryRunner.manager.save(workspaceMember);
  
      const channelMember = new ChannelMembers();
      channelMember.ChannelId = workspace.Channels.find(
        (v) => v.name === '일반',
      ).id;
      channelMember.UserId = user.id;
      await queryRunner.manager.save(channelMember);
  
      await queryRunner.commitTransaction();
    } catch (error) {
      console.error(error);
      await queryRunner.rollbackTransaction();
    } finally {
      await queryRunner.release();
    }
  }