多个http请求的Akka流
在我的一个项目中,我有一个akka actor向我的谷歌fcm服务器发送请求。参与者需要一个ID列表,并且应该尽可能多地提出请求。我在runForeach(println(_))
中打印出服务器的响应,但我只收到一个打印输出的整个ID列表。为什么会发生?多个http请求的Akka流
class FCMActor(val key: String) extends Actor{ import fcm.FCMActor._
import akka.pattern.pipe
import context.dispatcher
private implicit def system: ActorSystem = ActorSystem()
final implicit val materializer: ActorMaterializer = ActorMaterializer(ActorMaterializerSettings(context.system))
def buildBody(id: Option[String]): String = {
Json.obj(
"to" -> id,
"priority" -> "high",
"data" -> Json.obj("message" -> "Firebase Clud Message"),
"time_to_live" -> 60
).toString()
}
def buildHttpRequest(body: String): HttpRequest = {
HttpRequest(method = HttpMethods.POST,
uri = s"/fcm/send",
entity = HttpEntity(MediaTypes.`application/json`, body),
headers = List(RawHeader("Authorization", s"key=$key")))
}
val connectionFlow: Flow[HttpRequest, HttpResponse, Future[Http.OutgoingConnection]] = {
Http().outgoingConnection("fcm.googleapis.com")
}
def send(ids: List[Option[String]]) = {
val httpRequests: List[HttpRequest] = ids.map(buildBody).map(buildHttpRequest)
println(httpRequests)
Source(httpRequests).via(connectionFlow).runForeach(println(_)) // << here I only get one println
}
override def receive: Receive = {
case SendToIds(ids: List[Option[String]]) =>
send(ids)
}
}
回答:
您没有使用服务器向您发送的响应实体。要了解为什么这很重要,请查看相关的docs page。
快速代码更改,试图解决这个问题是:
... .runForeach{ response => response.discardEntityBytes()
println(response)
}
或者,如果你在实体真正感兴趣的,沿着
... .runForeach{ _.entity.dataBytes .runFold(ByteString.empty) { case (acc, b) => acC++ b }
.map(println(_))
}
以上是 多个http请求的Akka流 的全部内容, 来源链接: utcz.com/qa/264318.html