Documents are still added even when the abortTransaction was called

[AhtashamImtiyaz]

I managed to add transaction using @InjectConnection decorator from @nestjs/mongoose library and injecting the dependency in the service constructor but one of the two documents was added even when there was an error.

My code of AuthService class:

import {InjectConnection} from '@nestjs/mongoose';
import * as mongoose from 'mongoose';

export class AuthService {
constructor(
    private readonly userService: UserService,
    private readonly profileService: ProfileService
    @InjectConnection() private readonly connection: mongoose.Connection){}

The account creation function in AuthService

const transactionSession = await this.connection.startSession();
    transactionSession.startTransaction();

    try
    {
      const newSignupBody: CreateUserDto = {password: hashedPassword, email, username};
  
      const user: User = await this.userService.create(newSignupBody);

      //save the profile.
      const profile: Profile = await this.profileService.create(user['Id'], signupDto);

      const result:AuthResponseDto = this.getAuthUserResponse(user, profile);

      transactionSession.commitTransaction();
      return result;
    }
    catch(err)
    {
      //here it should abort the request because profile service return an error
      transactionSession.abortTransaction();
      throw new CustomErrorHandler(err)
    }
    finally
    {
      transactionSession.endSession();
    }

[AhtashamImtiyaz]

Following the mongoose documentation, it works in expressjs using the mongoose itself to initiate a transa tion.

But if we try to use mongoose directly in nestjs, it returns connection error referred to: https://stackoverflow.com/questions/67879357/nestjs-how-to-use-mongoose-to-start-a-session-for-transaction.

I resolved the connection issue by using nestjs/mongoose connection object.

But here, it is not aborting the transaction. The documents are still being added

[kamilmysliwiec]

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