gistfile1.scala

  val client = MongoClients.create(new ConnectionString("localhost:27017"))
  val db = client.getDatabase("myDb")
  val collection = db.getCollection("myCollection")

  def findAndModify(filter: Document, update: Document, options: FindOneAndUpdateOptions): Future[Document] = {
    val p: Promise[Document] = Promise()

    collection.findOneAndUpdate(
      filter, update, options,
      new SingleResultCallback[Document] {
        override def onResult(result: Document, t: Throwable): Unit =
          if (t == null) p.success(result) else p.failure(t)
      })

    p.future
  }

  val queryOptions =
    new FindOneAndUpdateOptions()
      .upsert(true)
      .returnDocument(ReturnDocument.AFTER)
      .upsert(false)

  findAndModify(new Document("lastName", "Smith"), new Document("lastName", "Jones"), queryOptions)