Hi there. I have a question about clean architecture. Which module (

data

,

domain

,

presentation

) is responsible for handling API errors, for example if I have API method

/login

and it returns error

Email is incorrect

where should I handle it? I guess in repository inside

data

module/layer, but maybe I missed smth.

I use to do that handling on domain layer. It make sense for me because it is near to the

presentation

layer, and

presentation

will only comsume those exceptions coming from

domain

and show it for the user in someway. (I'm not sure if my thoughts are correct. 😄 Just sharing my option) Anyway, I'm curious about other point of view 🙂

Domain layer I believe

I would do it in domain layer too. IMHO, data should be responsible to serve raw data, and the domain layer should handle it accordingly to the domain rules, given by the person responsible for it i your org (Product Owner, business, etc etc)

Thank you guys for your answers. Will handle it in

domain

, agree with @nounours

Hm, I'd say in

data

and optionally in domain, no? You don't want api exeptions in

domain

because that's dependency leak. You handle it once in

data

, map it to some sort of error model from domain. Then, in

domain

itself you can do something with it, or just pass it to

ui

and

ui

will map it to its own models.