Carlos Santos
07/23/2021, 8:21 AMAleksei Tirman [JB]
07/23/2021, 8:55 AMCarlos Santos
07/23/2021, 9:06 AMJoost Klitsie
07/23/2021, 12:11 PMAleksei Tirman [JB]
07/23/2021, 12:26 PMRoute
and in its body, create a new route with a custom selector. In that selector, you may have a validation logic. Here is an example:
fun main() {
embeddedServer(Netty, port = 8080) {
routing {
validate {
get("/") {
call.respondText { "ewqe" }
}
}
}
}.start(wait = true)
}
fun Route.validate(validator: MyValidator = MyValidator(), build: Route.() -> Unit): Route {
val newRoute = createChild(MySelector(validator))
newRoute.build()
return newRoute
}
class MySelector(private val validator: MyValidator): RouteSelector() {
override fun evaluate(context: RoutingResolveContext, segmentIndex: Int): RouteSelectorEvaluation {
if (validator.validate()) {
return RouteSelectorEvaluation.Constant
}
return RouteSelectorEvaluation.Failed
}
}
class MyValidator {
fun validate(): Boolean {
return true
}
}
Carlos Santos
07/23/2021, 1:07 PM...
routing {
authenticate(...){
validate {
get("/") {
call.respondText { "ewqe" }
}
}
}
}
Rustam Siniukov
07/23/2021, 1:47 PMevaluate
. Something like
fun Route.validate(validator: MyValidator = MyValidator(), build: Route.() -> Unit): Route {
val newRoute = createChild(MySelector())
newRoute.intercept(Call) { validator() }
return newRoute
}
Carlos Santos
07/23/2021, 2:24 PMRustam Siniukov
07/23/2021, 2:34 PMCarlos Santos
07/23/2021, 2:36 PM...
routing {
authenticate(...){
validate {
get("/") {
call.respondText { "ewqe" }
}
}
}
}
...
fun Route.validate(validator : Validator, build: Route.() -> Unit): Route {
val newRoute = createChild(MySelector(1.0))
newRoute.intercept(ApplicationCallPipeline.Features) {
doSomething
}
newRoute.build()
return newRoute
}
If i do this, it will run the intercep 1st and only after it will run the authenticationRustam Siniukov
07/23/2021, 2:58 PMAuthentication
adds it’s own phase.
You need a bit more code to make it work.
private val validationPhase = PipelinePhase("Validate")
fun Route.validate(validator : Validator, build: Route.() -> Unit): Route {
val newRoute = createChild(MySelector())
newRoute.insertPhaseAfter(ApplicationCallPipeline.Features, Authentication.ChallengePhase)
newRoute.insertPhaseAfter(Authentication.ChallengePhase, validationPhase)
newRoute.intercept(validationPhase) {
doSomething
}
newRoute.build()
return newRoute
}
class ValidationSelector: RouteSelector() {
fun evaluate(context: RoutingResolveContext, segmentIndex: Int) = RouteSelectorEvaluation.Transparent
}
This way you make sure that your phase for validation will be after authentication phases.
It’s a bit complicated and you need to know the internals of how phases work, that’s why we will implement simpler API in 2.0.0. You can follow it here https://youtrack.jetbrains.com/issue/KTOR-929Carlos Santos
07/23/2021, 3:08 PM