How to create Custom Directive by composing multiple directives in spray - scala

Question

I would like to write a custom directive for all get, post,put and delete requests, because all requests needs authorization. To keep code DRY, I want to abstract those boilerplate(I have to authorize more than 100 requests). I could handle all Get Requests as follows
def method1 = Try("hi") // controller methods
def method2 = Try("hello")
path("getData1") {
handleGetRequest(method1)
}
path("getData2") {
handleGetRequest(method2)
}
def customGetDirective: Directive0 = {
headerValueByName("token").flatMap { token =>
authorize(checkAuthorization(token, ""))
get.hflatMap {x=>
respondWithMediaType(`application/json`)
}
}
}
def handleGetRequest(fn: => Try[_]) = {
customGetDirective { ctx=>
val result = fn
val json = //result can be coverted to json
ctx.complete(json)
}
}
I want to write a similar Generic directive for POST request, so that I could use
path("postData1") {
handlePostRequest(saveToDb)
}
def handlePostRequest(fn: => Try[_]) = {
customPostDirective { (ctx, JsonData)=>
//.......
ctx.complete(json)
}
}
but, I dont know how to get RequestContext and JsonData as tuple
I can write like this,
entity(as[String]) { jsonData =>
customPostDirective{ ctx=>
}
}
If I get a tuple it will be more useful.
Thank you.