val ref = context.child(name).getOrElse(context.actorOf(props, name))
On Sun, Apr 5, 2015 at 11:53 PM, Adam <[email protected]> wrote:
> First of all, you shouldn't ever block like this, as you do with Await.
>
> As for your question - this sounds like something the parent actor should
> be responsible for.
> I'm not even sure the code above works (it at least never occurred to me
> to try to create an actor using a full path as I always understood the docs
> as if it shouldn't be possible).
> I think allowing the parent actor to determine if one of his children
> exists or not is cleaner.
> It also has direct access to this through the actor context, so the answer
> is immediate.
>
>
>
>
> On Sunday, April 5, 2015 at 10:50:28 PM UTC+3, Fatih Dönmez wrote:
>>
>> Hi,
>>
>> I want to create an actor if it didn't created already. To check its
>> existence I use actorSelection. If there is no actor defined by the path, I
>> create a new one with actorOf.
>> Is this approach correct? How can I improve the design? Here is the code
>> I come up with currently;
>>
>> val fullPath: String = path.format(appId)
>> var starter: ActorRef = null
>> implicit val timeout = Timeout(5 seconds)
>>
>> try {
>> starter = Await.result(context.actorSelection(fullPath).
>> resolveOne,FiniteDuration(5,TimeUnit.SECONDS))
>> } catch {
>> case e: ActorNotFound => {
>> starter = context.actorOf(Props(new StarterNode(customer,
>> appId)), name = fullPath)
>> logger.info("Actor [" + fullPath + "] creating for first time")
>> }
>> case e: Exception => logger.error("Actor [" + fullPath + "]
>> selection failed",e)
>> }
>>
>> //TODO
>> if(starter != null) {
>> starter ! event
>> } else {
>> logger.warn("Starter node failed with timeout")
>> }
>>
>>
>>
> --
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--
Cheers,
√
--
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>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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