Akka:向演员发送将来的消息 [英] Akka: Send a future message to an Actor
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问题描述
我在Actor中有以下代码
I have the following code inside an Actor
def receive = {
case All() => {
val collection: BSONCollection = db("ping")
val future:Future[List[Ping]] = collection.find(BSONDocument()).cursor[Ping].toList()
val zender = sender
future onComplete {
case Success(list) => zender ! list
case Failure(throwable) => zender ! List()
}
}
}
我不就像我必须使用onComplete函数将结果发送回发送方参与者一样。我想知道是否有可能将其转换为如下形式:
I don't like how I have to use the onComplete function to send the result back to the sender actor. I'd like to know if it is possible to convert it into something like this:
def receive = {
case All() => {
val collection: BSONCollection = db("ping")
val future:Future[List[Ping]] = collection.find(BSONDocument()).cursor[Ping].toList()
"sender ! future" // one option
"future.map( list => sender ! list)" //Another option. I know it's not map, but maybe another function
}
}
I感觉将来的链接会更好。
I feel that this flows better with future chaining.
推荐答案
您可以为此使用管道模式。只需 import akka.pattern.pipe
,您就可以使用 future pipeTo actor
。
You can use the pipe pattern for that. Just import akka.pattern.pipe
and then you'll be able to pipe messages from futures to actors with future pipeTo actor
.
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