如何使用特性聚合akka-http路由？

Question

我试图在运行时使用一个特性聚合路由，到目前为止

object SMController {
  def aggregateRoutes(actorSystem: ActorSystem): List[Route] = {
    val runtimeMirror = universe.runtimeMirror(getClass.getClassLoader)
    val reflections = new Reflections("com.example.api")
    val subclasses = reflections.getSubTypesOf(classOf[Routable])
    val routesList = new ListBuffer[Route]()

    for (i <- subclasses) {
      val module = runtimeMirror.staticModule(i.getName)
      val obj = runtimeMirror.reflectModule(module)
      val someTrait: Routable = obj.instance.asInstanceOf[Routable]
      routesList += someTrait.getAllRoutes(actorSystem)
    }

    routesList.toList
  }
}

显然，上面的代码不起作用，因为项目列表不能传递给http().bindandhandle。

所以我的问题是，如何将列表[Routes]解析为HTTP().bindandhandle接受，或者如何从routable的子类动态加载路由？

Answer 1

foldLeft：我已经成功地将路由折叠并合并所有路由，如下所示

val routes = SMController.aggregateRoutes(system)
val bindingFuture = Http().bindAndHandle(
        routes.tail.foldLeft(routes.head)((a, b) => a ~ b), "localhost", 8080)

ReduceLeft：

routes.reduceLeft(_ ~ _)