Hi Johan!
Go figure it would be you to bail me out, just like in the good old
Plotagon days! :)
However this time I couldn't get it compiling with your suggestion. Fails
with the same error. I got it working in another way though:
trait Microservice {
import directives.AuthDirectives._
private def parseScopes(scopeStr: String): Set[OAuthScope] =
scopeStr
.split(" ")
.flatMap(scopeFromString)
.toSet
def verifyScopes(required: Set[OAuthScope]): Directive1[AuthHeaders] =
parseAuthHeaders(parseScopes).flatMap {
case headers if OAuthScope.hasScopes(required, headers.scopes) =>
provide(headers)
case _ => reject(AuthorizationFailedRejection)
}
/**
* Each service has it own set of scopes, which we know nothing about at
this point
*/
protected def scopeFromString(str: String): Option[OAuthScope]
}
On Thursday, January 7, 2016 at 2:36:55 PM UTC+1, Johan Andrén wrote:
>
> Hi Durre,
>
> Marking a method implicit like that makes it available to do implicit
> conversion, which means that if
> there is some code where you have a String and need a Set[OAuthScope] the
> compiler
> will insert a call to the method to convert types. This is often confusing
> and makes the code a bit
> hard to read, something to be careful with.
>
> What you are looking for is an implicit value that is to be passed to
> methods with implicit paremeters
> when not explicitly provided. The compiler will try to find some implicit
> value that matches the type
> in the current scope, so as your method takes a function:
>
> String => Set[OAuthScope]
>
> you need a value of that type to be available in the scope. You can
> provide that like this for example:
>
> implicit val parseScopes: String => Set[OAuthScope] = str => str.split("
> ").flatMap(scopeFromString).toSet
>
> Good luck!
> --
> Johan Andrén
> Typesafe - Reactive apps on the JVM
> Twitter: @apnylle
>
> On Thursday, January 7, 2016 at 11:25:53 AM UTC+1, durre wrote:
>>
>> This is probably more of a generic scala question, but I figured the very
>> best scala developers are clearly found in the akka mailing list, right? :)
>>
>> I would like my verifyScopes directive to magically find my parseScopes
>> function without me having to explicitly pass it as a parameter. If I do
>> pass it, it works. If I dont it fails with:
>>
>> [error] found : akka.http.scaladsl.server.StandardRoute
>> [error] required: Set[models.OAuthScope]
>> [error] complete("All good")
>>
>>
>>
>>
>> implicit def parseScopes(scopeStr: String): Set[OAuthScope] =
>> scopeStr
>> .split(" ")
>> .flatMap(scopeFromString)
>> .toSet
>>
>> def parseAuthHeaders(parseScopes: String => Set[OAuthScope]) =
>> authHeaders.tmap {
>> case (userId, orgId, scopes) =>
>> AuthHeaders(
>> userId = UUID.fromString(userId),
>> orgId = UUID.fromString(orgId),
>> scopes = parseScopes(scopes)
>> )
>> }
>>
>>
>> def verifyScopes(required: Set[OAuthScope])(implicit parser: String =>
>> Set[OAuthScope]): Directive1[AuthHeaders] =
>> parseAuthHeaders(parseScopes).flatMap {
>> case headers if OAuthScope.hasScopes(required, headers.scopes) =>
>> provide(headers)
>> case _ => reject(AuthorizationFailedRejection)
>> }
>>
>>
>>
>> val route =
>> get {
>>
>> verifyScopes(Set(MyScope)) { headers =>
>> complete("All good")
>> }
>> }
>>
>>
>>
--
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>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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