Simplest sttp http client library json example using akkahttp backend. / published by https://github.com/dacr/code-examples-manager #2b623f40-e7df-4fb8-8b29-05d7907d63a0/88f28e35af7df769d16793112370cc26dbac6e91

http-client-sttp-json-simple-akkahttp.sc

// summary : Simplest sttp http client library json example using akkahttp backend.
// keywords : scala, sttp, http-client, json4s, json, akkahttp
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 2b623f40-e7df-4fb8-8b29-05d7907d63a0
// created-on : 2020-07-02T10:02:26Z
// managed-by : https://github.com/dacr/code-examples-manager
// execution : scala ammonite script (http://ammonite.io/) - run as follow 'amm scriptname.sc'

import $ivy.`com.softwaremill.sttp.client3::core:3.3.5`
import $ivy.`com.softwaremill.sttp.client3::akka-http-backend:3.3.5`
import $ivy.`com.softwaremill.sttp.client3::json4s:3.3.5`
import $ivy.`com.typesafe.akka::akka-stream:2.6.14`
import $ivy.`org.json4s::json4s-jackson:3.6.11`

import sttp.client3._
import sttp.client3.json4s._
import org.json4s._
import sttp.client3.akkahttp._
import scala.util.{Success, Failure, Try, Left, Right, Either}
import scala.concurrent.{Future, Await}
import scala.concurrent.duration._

object Status { // Embedded within an object to avoid issues between future and ammonite
  import scala.concurrent.ExecutionContext.Implicits.global
  val backend = AkkaHttpBackend()
  implicit val serialization = org.json4s.jackson.Serialization
  implicit val formats = org.json4s.DefaultFormats

  def check():Unit = {
    val jsonFuture = {
      basicRequest
        .get(uri"http://httpbin.org/ip")
        .response(asJson[JValue])
        .send(backend)
    }

    val resultFuture = {
      jsonFuture
        .map(_.body)
        .collect { case Right(json) => json }
        .map(json => (json \ "origin").extract[String])
    }

    Await.result(resultFuture.map(println), 2.seconds) // To avoid exiting before the result is ready to be printed
  }
}

Status.check()