How to get the URL endpoint and the GET/POST method when an Exception occurs?

[vstung89]

Hello everyone, I need help with an issue.

I use a suspend function to call the API as shown in the code below. How can I get the URL endpoint and the GET/POST method when an Exception occurs?

suspend fun <T : BaseResponse> safeCallApi(
	api: suspend () -> Response<T>
): Result<T> {
	return try {
		val response = api()
		if (response.isSuccessful) {
			val body = response.body()
			if (body != null) {
				Result.success(body)
			} else {
				Result.failure(BodyNullException())
			}
		} else {
			Result.failure(ServerException())
		}
	} catch (e: Exception) {
		// I want to obtain the information about the URL endpoint and the GET/POST method there.
		Result.failure(UnknownException(e))
	}
}

[angusholder]

You'll need to change your API method from

suspend fun myApiMethod(): Response<T>

to

fun myApiMethod(): Call<T>

then change your code above to

val call: Call<T> = api()
try {
    val response: Response<T> = call.awaitResponse()
    ..
} catch (e: Exception) {
    call.request().method // use me
    call.request().url // use me
    Result.failure(UnknownException(e))
}

[JakeWharton]

Yeah there's basically no way to do this when using a "raw" suspend function because we become at the mercy of underlying libraries and how they throw exceptions. An HttpException includes a Response from which you can get the Request, but IOException subtypes won't have that. The only way to retrieve that information is as posted above, where you create the Call explicitly and perform suspended-execution separately.