Handle mongo/mongoose error in nestjs not - mongodb

Question

I would like to set up a filter to catch mongo errors (I'm using mongoose on this project) but nothing I do works and my research / test of what is on the internet does nothing.
mongoExceptionFilter.ts
import {
ArgumentsHost,
ConflictException,
BadRequestException,
Catch,
ExceptionFilter
} from '#nestjs/common';
import { MongoError } from 'mongodb';
#Catch(MongoError)
export class MongoExceptionFilter implements ExceptionFilter {
catch(exception: MongoError, host: ArgumentsHost): unknown {
switch (exception.code) {
case 11000: // duplicate exception
throw new ConflictException();
default:
throw new BadRequestException(`error ${exception.code}`);
}
}
}
I test a call here main.ts :
async function bootstrap() {
const app = await NestFactory.create(AppModule);
app.useGlobalPipes(new ValidationPipe());
app.useGlobalFilters(new MongoExceptionFilter());
await app.listen(3001);
}
and here users.controller.ts :
#Post()
#UseFilters(MongoExceptionFilter)
createUser(#Body() body: UsersDto): Promise<Users> {
return this.userService.createUser(body.name, body.password);
}
Some link i found just for information :
How to handle mongoose error with nestjs
NestJs - Catching MongoDB errors with a custom filter and #Catch(MongoError)

Answer 1

Same problem here. The only solution for me now is to catch the MongoError imported from mongodb in the global filter and check for it there

Answer 2

As per this MongoError from MongoDb is different from MongoError from mongoose package. So it seems you are using both the packages i.e. Mongodb and mongoose.

Answer 3

With Custom messages, I combined solutions from answers How to handle mongoose error with nestjs
import { ArgumentsHost, Catch, ExceptionFilter, RpcExceptionFilter } from '#nestjs/common';
import { Error } from 'mongoose';
import { IDTOError } from '../errors/bad-request-exception.error';
import ValidationError = Error.ValidationError;
import { MongoError } from 'mongodb';
#Catch(MongoError)
export class MongoExceptionFilter implements ExceptionFilter {
catch(exception: MongoError, host: ArgumentsHost) {
// switch (exception.code) {
// case 11000:
// default: console.log(exception,'ALERT ERROR CATCHED');
// // duplicate exception
// // do whatever you want here, for instance send error to client
// /** MAIGOD */
// }
const ctx = host.switchToHttp(),
response = ctx.getResponse();
return response.status(400).json(<IDTOError>{
statusCode: 400,
createdBy: 'ValidationErrorFilter, Schema or Model definition',
errors: exception,
});
}
}
#Catch(ValidationError)
export class ValidationErrorFilter implements RpcExceptionFilter {
catch(exception: ValidationError, host: ArgumentsHost): any {
const ctx = host.switchToHttp(),
response = ctx.getResponse();
return response.status(400).json(<IDTOError>{
statusCode: 400,
createdBy: 'ValidationErrorFilter, Schema or Model definition',
errors: exception.errors,
});
}
}