I had a working implementation of a ktor server ap...

# ktor

[Tucker Barbour]

I had a working implementation of a ktor server application using oauth where the oauth provider was selected based on the url path. I was able to accomplish this using the now deprecated Locations plugin. I’m reading through the source for the newer Resource plugin but I’m having trouble accomplishing the same thing.

@Location("/") class index
@Location("/auth/{type?}") class login(val type: String = "")
@Location("/auth/{type}/callback") class callback(val type: String)

val loginProviders = listOf(
  OAuthServerSettings.OAuth2ServerSettings(..),
  OAuthServerSettings.OAuth2ServerSettings(..)
).associateBy { it.name }

fun Application.module() {
  install(Authentication) {
    oauth("oauth") {
      providerLookup = {
        loginProviders[application.locations.resolve<login>(login::class, this).type]
      }
      urlProvider = { p -> redirectUrl(callback(p.name), false) }
    }
  }
}

This is the gist with a bunch of other stuff left out. The key is begin able to map the url path to the name of the login provider. This ultimately allows a client to select which oauth provider to use. Any help or guidance would be appreciated.

[Aleksei Tirman [JB]]

You can do it with the following code:

providerLookup = {
    val resources = application.plugin(Resources)
    val resource = resources.resourcesFormat.decodeFromParameters(serializer<login>(), parameters)
    loginProviders[resource.type]
}

[Tucker Barbour]

I’ll give that a go, thanks!