Spray REST API应用程序结构 - 需要建议(Spray REST API Application Structure - Suggestions Needed)

 我有以下使用sbt构建的多模块项目结构： 
 
myProject-api
myProject-core
 
 myProject-core的组织如下： 
 
 它包含某些演员作为我的服务的外观。 例如，我有一个位于UserService前面的UserActor。 位于NotificationService之前的NotificationActor等。 
 
 我有另一个特征，让任何感兴趣的人暴露于演员： 
 
trait MyProjectCoreActors {

  def myAppCfg = MyProjConfig.appCfg      

  def userActor = myAppCfg.userActor
  def notifyActor = myAppCfg.notifyActor
}
object MyProjectCoreActors {

  ... some initialization routing that initializes the MyProjConfig
}
 
 我的UserActor因此被定义为： 
 
class UserActor(service: UserService) extends Actor {

  ...
  ...
}
 
 我的UserService如下所示： 
 
class UserService(dbConfig: DbConfig) {

  ...
  ...
}
 
 我有另一个名为MyProjectConfig的类，我使用application.conf文件进行初始化。 在这个文件中，我有连接细节到数据库等等。 MyProjectConfig初始化如下： 
 
trait MyProjectConfig {

  def actorSystem: ActorSystem

  // the actors
  def userActor: ActorRef
}
object MyProjectConfig {

  def apply(appConfig: Config, system: ActorSystem): MyProjectConfig = {

    new MyProjectConfig {
      private val dbConfig = loadDBConfig(appConfig)

      override val actorSystem = system

      // each actor gets its own DBConfigInstance instance
      override val userActor =
        actorSystem.actorOf(
          Props(new UserActor(UserService(dbConfig)))
        )
    }
  }
}
 
 我现在有如下定义的喷涂路线： 
 
trait MyProjectService extends HttpService with MyProjectCoreActors {

  def pingRoute = path("ping") {
    get {
      userActor ! "newUser"
      complete("pong!")
    }
  }

  def pongRoute = path("pong") {
    get { complete("pong!?") }
  }

  def route = pingRoute ~ pongRoute
}
 
 现在缺少的是一种调用MyProjectConfig.apply（....）方法并传入Actor系统和底层application.conf的方法！ 
 
 这本来是一个基于Play的应用程序，我有一个Lifecycle插件，可以从我获得配置和actor系统访问底层应用程序。 我现在怎么能和Spray一样呢？ 
 
 我有一个Boot类，看起来像这样： 
 
object MyBootHttpService extends App {

  implicit val actorSystem = ActorSystem("myproj-actor-system")

}
 
 我怎么能把这个ActorSytem传递给MyProjectConfig.apply（....）？ 并从哪里可以得到application.conf？ 

I have the following multi-module project structure built using sbt:
 
myProject-api
myProject-core
 
myProject-core is organized as below:
 
It contains certain actors which acts as a facade to my services. For example., I have a UserActor that sits in front of a UserService. A NotificationActor that sits in front of a NotificationService and so on.
 
I have another trait that exposes there actors to anybody that is interested:
 
trait MyProjectCoreActors {

  def myAppCfg = MyProjConfig.appCfg      

  def userActor = myAppCfg.userActor
  def notifyActor = myAppCfg.notifyActor
}
object MyProjectCoreActors {

  ... some initialization routing that initializes the MyProjConfig
}
 
My UserActor is thus defined as:
 
class UserActor(service: UserService) extends Actor {

  ...
  ...
}
 
My UserService is as follows:
 
class UserService(dbConfig: DbConfig) {

  ...
  ...
}
 
I have another class called MyProjectConfig which I initialize using the application.conf file. In this file I have the connection details to the database and so on. The MyProjectConfig is initialized as below:
 
trait MyProjectConfig {

  def actorSystem: ActorSystem

  // the actors
  def userActor: ActorRef
}
object MyProjectConfig {

  def apply(appConfig: Config, system: ActorSystem): MyProjectConfig = {

    new MyProjectConfig {
      private val dbConfig = loadDBConfig(appConfig)

      override val actorSystem = system

      // each actor gets its own DBConfigInstance instance
      override val userActor =
        actorSystem.actorOf(
          Props(new UserActor(UserService(dbConfig)))
        )
    }
  }
}
 
I have now the Spray routing as defined below:
 
trait MyProjectService extends HttpService with MyProjectCoreActors {

  def pingRoute = path("ping") {
    get {
      userActor ! "newUser"
      complete("pong!")
    }
  }

  def pongRoute = path("pong") {
    get { complete("pong!?") }
  }

  def route = pingRoute ~ pongRoute
}
 
What is now missing is a way to call the MyProjectConfig.apply(....) method and pass in the Actor System and the underlying application.conf! 
 
This was originally a Play based application, where I had a Lifecycle plug in which had access to the underlying Application from where I got the config and the actor system. How could I now get the same here with Spray?
 
I have a Boot class that looks like this:
 
object MyBootHttpService extends App {

  implicit val actorSystem = ActorSystem("myproj-actor-system")

}
 
How could I pass this ActorSytem to MyProjectConfig.apply(....)? and from where could I get the application.conf?

原文：https://stackoverflow.com/questions/33570741