You can check #ktor with Jetty/Netty (and Undertow in a branch, since it’s not completed on a websocket side yet), its host test suite is literally single code, just derived test classes that switch in different host

What's the best ORM to use with Kotlin, for doing things along the lines of user = User.find(3) or game = Game.findByUser(user).setStatus(Game.Status.STARTED).save There's some Java stuff but I'm not that familiar with them, more familiar with Ruby on Rails and Python, decided to learn Kotlin for fun.

@orangy we did the same 1LOC contract test with Http4k for jetty/undertow/netty, and the same for the clients (okhttp and apache so far). It's interesting how the various implementations vary - for instance especially to note how OkHttp is very strict with what types of message you can construct (no bodies in GET etc)

@jrp I’d recommend looking at jOOQ.

I’ve used it in production in a few places, it’s fantastic. Very active community. Easy to use from Kotlin.

@jrp Another vote for jOOQ, it's simply brilliant. IDEA currently has a bug with jOOQ/Kotlin (auto-suggest takes a long time) but it was marked as solved for the next version of the Kotlin plugin (1.1.3); You can instruct the code generator to create DAO objects if you appreciate helper methods for the common queries but I generally find no need.

You can combine it with Flyway for database versioning; add a few Gradle tasks for versioning and jOOQ model regeneration and you have a pretty nice setup - I'm not going back to Hibernate and its derivatives if I can help it 🙂

I love jooq, but be wary that jooq plans to deprecate DAO generation - https://github.com/jOOQ/jOOQ/issues/5984

is it okay to ask for feedback on a rest api library here?

Well, I think so, but be prepared 🙂

i'd be happy if you tore it to shreds 😄 web: https://javalin.io/documentation source: https://github.com/tipsy/javalin i'm pretty serious about good java/kotlin interoperability, which is why i left Javalin class + all SAM interfaces as Java

would be happy if anyone could come up with a way of converting everything to kotlin though

Before handlers, After handlers

Kotlin code not fully converted, can remove parenths

Handler groups

semicolons 🙂

get

with roles could better have lambda last, role second param

fix the first two, thanks

Semicolons and parenths are everywhere, check Kotlin docs

app.exception

could use reified generics

app.exception<NullPointerException> { … }

sorry, when the docs are very similar i lazily just use the java source for both 😇

HaltException

– I find it weird name, I think it should halt the server or something.

mm.. it's from sinatra

okay 🙂

any suggestion for what would be a better jvm-name?

Also fluent APIs are not very idiomatic Kotlin, though I understand you need to keep Java compatibility. In Kotlin we would make a builder, but you can do both with a couple of tricks.

like, define a function like this:

inline operator fun Application.invoke(builder: Application.()->Unit) = builder()

And you can

app {
  exception(…)
  error(…)
  before(…)
  get(…)
}

I assume from the API the whole framework is sync?

In Kotlin we would make a builder,

what about when you're mutating an existing object, like

response.status(200).body("ok")

I assume from the API the whole framework is sync?

yes

there's a

request.async()

method available for those who need it