当我使用Spray.io开发RESTful API时,我应该如何构建我的应用程序?
我已经看过如何分割Spray应用程序的this answer,但我对此并不满意,因为它似乎没有使用“每个请求一个actor”的方法。我可以根据路径将根执行者的请求转发给我的应用程序中的其他actor,并在这些actor中定义相关的路由吗?
由于
答案 0 :(得分:8)
您当然可以根据路径或其他任何方式将请求从一个actor转发到另一个actor。查看我的示例项目(它是示例项目的fork的分支):
来自接收所有请求的主actor的相关代码,并将它们路由到处理每个服务的其他actor:
def receive = runRoute {
compressResponseIfRequested(){
alwaysCache(simpleCache) {
pathPrefix("movies") { ctx => asb.moviesRoute ! ctx } ~
pathPrefix("people") { ctx => asb.peopleRoute ! ctx }
} ~
pathPrefix("login") { ctx => asb.loginRoute ! ctx } ~
pathPrefix("account") { ctx => asb.accountRoute ! ctx }
}
}
例如电影路线:
def receive = runRoute {
get {
parameters('query, 'page ? 1).as(TitleSearchQuery) { query =>
val titleSearchResults = ms.getTitleSearchResults(query)
complete(titleSearchResults)
}~
path(LongNumber) { movieId =>
val movie = ms.getMovie(movieId)
complete(movie)
}~
path(LongNumber / "cast") { movieId =>
val movieCast = ms.getMovieCast(movieId)
complete(movieCast)
}~
path(LongNumber / "trailers") { movieId =>
val trailers = ms.getTrailers(movieId)
complete(trailers)
}
}
}
答案 1 :(得分:0)
我在创建第一个完整的REST项目时遇到了很多困难。我发现的例子是世界级的......我读过很少的博客,很少有评论,我决定创建示例项目。它基于scala / akka / spray / mysql
完整的工作示例,使用websocket通知客户数据已更改等。您可以在https://github.com/vixxx123/scalasprayslickexample上查看
以下是该项目的路由示例代码:
val personCreateHandler = actorRefFactory.actorOf(RoundRobinPool(2).props(Props[CreateActor]), s"${TableName}CreateRouter")
val personPutHandler = actorRefFactory.actorOf(RoundRobinPool(5).props(Props[UpdateActor]), s"${TableName}PutRouter")
val personGetHandler = actorRefFactory.actorOf(RoundRobinPool(20).props(Props[GetActor]), s"${TableName}GetRouter")
val personDeleteHandler = actorRefFactory.actorOf(RoundRobinPool(2).props(Props[DeleteActor]), s"${TableName}DeleteRouter")
val userRoute =
pathPrefix("person") {
pathEnd {
get {
ctx => personGetHandler ! GetMessage(ctx, None)
} ~
post {
entity(as[Person]) {
entity =>
ctx => personCreateHandler ! CreateMessage(ctx, entity)
}
}
} ~
pathPrefix (IntNumber){
entityId => {
pathEnd {
get {
ctx => personGetHandler ! GetMessage(ctx, Some(entityId))
} ~ put {
entity(as[Person]) { entity =>
ctx => personPutHandler ! PutMessage(ctx, entity.copy(id = Some(entityId)))
}
} ~ delete {
ctx => personDeleteHandler ! DeleteMessage(ctx, entityId)
} ~ patch {
ctx => personPutHandler ! PatchMessage(ctx, entityId)
}
}
}
}
}
来自create actor handler的样本:
override def receive: Receive = {
case CreateMessage(ctx, person) =>
val localCtx = ctx
connectionPool withSession {
implicit session =>
try {
val resId = PersonsIdReturning += person
val addedPerson = person.copy(id = Some(resId.asInstanceOf[Int]))
localCtx.complete(addedPerson)
publishAll(CreatePublishMessage(TableName, localCtx.request.uri + "/" + addedPerson.id.get, addedPerson))
L.debug(s"Person create success")
} catch {
case e: Exception =>
L.error(s"Ups cannot create person: ${e.getMessage}", e)
localCtx.complete(e)
}
}
}
仍然缺少两个重要的事情:oauth2和通过websocket向特定用户/连接推送通知