services/jvm/src/test/scala/org/apache/gearpump/services/security/oauth2/MockOAuth2Server.scala

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.gearpump.services.security.oauth2

import scala.concurrent.{Await, Future}

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.Http.ServerBinding
import akka.http.scaladsl.model.{HttpRequest, HttpResponse}
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.Sink

import org.apache.gearpump.util.Util
// NOTE: This cannot be removed!!
import org.apache.gearpump.services.util.UpickleUtil._

/**
 * Serves as a fake OAuth2 server.
 */
class MockOAuth2Server(
    actorSystem: ActorSystem,
    var requestHandler: HttpRequest => HttpResponse) {

  implicit val system: ActorSystem = actorSystem
  implicit val materializer = ActorMaterializer()
  implicit val ec = system.dispatcher

  private var _port: Int = 0
  private var bindingFuture: Future[ServerBinding] = null

  def port: Int = _port

  def start(): Unit = {
    _port = Util.findFreePort().get

    val serverSource = Http().bind(interface = "127.0.0.1", port = _port)
    bindingFuture = {
      serverSource.to(Sink.foreach { connection =>
        connection handleWithSyncHandler requestHandler
      }).run()
    }
  }

  def stop(): Unit = {
    import scala.concurrent.duration._
    Await.result(bindingFuture.map(_.unbind()), 120.seconds)
  }
}