I'm in the middle of writing a blog post about that directive, it's one of the
more "hardcore" ones in terms of hijacking scala mechanisms.
In this case it's hijacking auto-tupling.. To get rid of the message type:
headerValueByType[`Authorization`](())
If you give me a week or so there will be a full-in-details post about that
directive (and recent improvements to it).
--
Cheers,
Konrad 'ktoso’ Malawski
Akka @ Lightbend
On 29 March 2016 at 20:40:26, Marek Żebrowski (marek.zebrow...@gmail.com) wrote:
I'm trying to write authenticator for akka-http using Authorization header.
I came up with something:
def
logUserIn(token:String):Future[Option[UserId]]
=
???
val
withUserId:
Directive1[User.Id]
= {
extractExecutionContext.flatMap { implicit
ec =>
headerValueByType[Authorization]().flatMap
{ authHdr =>
{
onSuccess(logUserIn(authHdr)).flatMap {
case
Some(userId)
=>
provide[UserId](userId):
Directive1[UserId]
case
None
=>
reject(MissingHeaderRejection(Authorization.name)):
Directive1[UserId]
}
}
}
}
} It seems to work, but gives compilation warning:
[info] Compiling 1 Scala source to
/Users/mar/git/sgrouples/target/scala-2.11/classes...
[warn] Adaptation of argument list by inserting () has been deprecated: this is
unlikely to be what you want.
[warn] signature: HeaderDirectives.headerValueByTypeT <:
akka.http.scaladsl.model.HttpHeader: akka.http.scaladsl.server.Directive1[T]
[warn] given arguments:
[warn] after adaptation: HeaderDirectives.headerValueByType((): Unit)
[warn] headerValueByTypeAuthorization.flatMap { authHdr =>
[warn] ^
[warn] one warning found
I'm puzzled if it is intended usage of this directive, or should I manually
construct ClassMagnet[T] for this Directive ?
In source code I can find example, that is constructed in the same way.
headerValueByType[Origin]() { origin ⇒
complete(s"The first origin was ${origin.origins.head}")
}
--
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>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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