Autowire 介绍
Autowire 包含一对宏，可以让你在两个 Scala 系统之间执行类型安全、无反射的 RPC 远程过程调用。示例代码：
// shared interface
trait Api{
def add(x: Int, y: Int, z: Int): Int
}
// server-side router and implementation
object Server extends autowire.Server...
object ApiImpl extends Api
def add(x: Int, y: Int, z: Int) = x + y + z
}
// client-side callsite
object Client extends autowire.Client...
Client[Api].add(1, 2, 3).call(): Future[Int]
// | | |
// | | The T is pickled and wrapped in a Future[T]
// | The arguments to that method are pickled automatically
// Call a method on the `Api` trait