How to wrap API responses to handle success and error based on Clean Architecture?

问题

What is the approach to wrapping responses from the server and then process? The API is returning responses in the following format:

SUCCESS:

 {
   "data": [],
   "statusCode": 200,
   "statusMessage": "Operation success",
   "success": true
 }

FAILURE:

  {
    "errors": [],
    "statusCode": 500,
    "statusMessage": "Something went wrong",
    "success": false
  }

I'm trying to apply Clean Architecture principles to my application and I want to know how can I wrap the responses to better handle errors?

回答1:

fillCities() calls getCities()
getCities() calls getCityList()

getCities processes the response that comes from getCityList endpoint through funcErrorCheckAndTransform and returns back an observable to presenter layer

fun <T> funcErrorCheckAndTransform(): (BaseResponse<T>) -> Observable<T> {
  return { response ->
    if (response.isSuccess) {
      Observable.just(response.data)
    } else {
      val e = Exception(response.errorMsg)
      Timber.e(e)
      Observable.error(e)
    }
  }
}



override fun getCities(): Observable<out Cities> {
  return locationService.getCityList()
      .subscribeOn(schedulerProvider.io())
      .flatMap(funcErrorCheckAndTransform())
      .observeOn(schedulerProvider.ui())
}



 @GET("getcitylist")
 fun getCityList():
     Observable<BaseResponse<ProfileResponse.Cities>>



  override fun fillCities(defaultCityName: String?) {
    view.showProgress(R.string.cities_are_getting_dialog_message)
    compositeDisposable.add(
        interactor.getCities().subscribe(
            {
              view.hideProgress()
              view.fetchCities(it, defaultCityName)
            },
            { error ->
              view.onError(error)
            }
        ))
  }

来源：https://stackoverflow.com/questions/51608002/how-to-wrap-api-responses-to-handle-success-and-error-based-on-clean-architectur

标签

android

json

kotlin

retrofit

clean-architecture