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Imagine I have a Duration value defined in my application.conf file. The documentation says it can parse Durations, but I can't see how.

timeout = 60 milliseconds

Can I parse it directly as a duration value? Ideally I would like to do something like this

val timeout = current.configuration.getMilliseconds("timeout")
(myActor ? GiveMeSomething)(timeout).mapTo[...]

but timeout is an Option[Long]. Thanks for any tips.

ticofab
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  • Typesafe's `Config` class reads HOCON files and provides a `getDuration(path: String): Duration` method. I guess you'd have to do all the legwork of figuring out the proper places from which to read the configuration files as [described in Play's docs](https://www.playframework.com/documentation/2.5.x/ProductionConfiguration) – Carl G Jun 19 '16 at 23:28

5 Answers5

2

Play's configuration does support Duration, FiniteDuration and other Scala types. Use: configuration.get[FiniteDuration]("path.to.duration") The Configuration.get function takes an implicit ConfigLoader[A]. Play comes with a lot of implementations and easy to add additional ones.

Joost den Boer
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Try getDuration(String, TimeUnit) method.

val timeout = config.getDuration("timeout", TimeUnit.MILLISECONDS)
grzesiekw
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    I don't think that method exists on the Play `Configuration` class. It does exist on the Typesafe `Config` class, but it returns a long. I think the question is to get a `Duration` return type. So one answer would be to use the `.getDuration(path: String): Duration` method on the Typesafe `Config` class. – Carl G Jun 19 '16 at 23:32
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try something like this:

import scala.concurrent.duration._
config.getMilliseconds("timeout").map(_.milliseconds)

that'll give you an Option[Duration]; you can get/getOrElse to get a concrete value.

mizerlou
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You can use the Duration apply method as such:

Duration.apply(configuration.get[String]("timeout"))

And then in configuration you would have something like this:

timeout = 15 seconds
Mike Cuthbert
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-5

I don't believe you can parse it directly as a duration value.

I usually have a helper class/method that does it for me, similar to this: http://pierreandrews.net/posts/config-scala.html

colinjwebb
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