svcc2013-TypeSafetyValidation.scala

val httpClient: HttpClient = ???
val httpResponse: HttpResponse = Await.result(httpClient.get(someUrl, someHeaders).apply(), 1.second)

//bodyAsIfResponseCode will return a Success if:
//- the HttpResponse returned with HttpResponseCode.OK
//- the function in the second argument returned a Success
val bodyValidation1: Validation[Throwable, String] = httpResponse.bodyAsIfResponseCode(HttpResponseCode.OK,
  { httpResponse: HttpResponse =>
    Success(httpResponse.bodyString)
  }
)

val bodyValidation2: Validation[Throwable, Int] = httpResponse.bodyAsIfResponseCode(HttpResponseCode.OK,
  { httpResponse: HttpResponse =>
    try {
      //toInt will throw if the String isn't a valid integer
      Success(httpResponse.bodyString().toInt)
    } catch {
      case t: Throwable => Failure(t)
    }
  }
)

//here we want to fail if:
//- the response code is not 404
//- the response code is 404 but it doesn't have the special 404 page
//this code could be useful for testing
val bodyValidation3: Validation[Throwable, Unit] = httpResponse.bodyAsIfResponseCode(HttpResponseCode.NotFound,
  { httpResponse: HttpResponse =>
    val bodyStr = httpResponse.bodyString()
    if(bodyStr != "fail sea otter") {
      Failure(new Exception("what do you call a failure to fail?")
    } else {
      Success(())
    }
  }
)