Hi! Does anyone know any load testing tool (maybe like gatling) that can be configured via kotlin?

Anyone want to share their opinion on using something like kotlinx.html for server side rendering vs a traditional templating engine like FreeMarker or Pebble? Just looking for advice or feedback on current best practices, if there are any.

I asked in #test too - but I am wondering if anyone has any better alternatives/suggestions to https://github.com/DiUS/pact-jvm/ - maybe I am even approaching the problem in the wrong way

Hey Everyone, I'm attempting to have my Ktor app's main method run once deployed to AppEngine. Currently the Ktor application's main method is only called when the app's hosted route is called: https://[yourProjectName].appspot.com. In the applications's main method is logic to retrieve content from an API request based on a Timer and save that information to a Firestore database which a client consumes. Thanks for the help! 🙂

Could you suggest how to generate build config fields with String type from gradle?

Hi! I’m trying out Ktor and can’t get auto-reload to work. I’ve added watch [ project-name ] to application.json under ktor.deployment. Then I build using ./gradlew -t build and run the app in a separate tab using ./gradlew run. The project is set up using the Ktor project wizard in IDEA I have a / route responding with plain text. When I load / in the browser it displays the text, but if I change the text and reload / in the browser it returns 200, but no text. I’m not sure how to figure out what goes wrong since I don’t get any errors in the terminal windows or in the response. Any ideas on how to figure out what’s going wrong?

Does anyone know, do I need to wrap the logic inside my

handleRequest

function into a

try catch

block in here? https://gist.github.com/rinnegan/3f65805a2f510519e738c4365b6fe97c#file-do-i-need-to-wrap-logic-in-try-catch-block-L20 I am confused because

processor.process(input, output)

will throw a checked exception in Java but Kotlin as no checked exceptions so I'm not sure what to do

Hello. I'm beginning on Kotlin, and I would like to trying it using Ktor. Is possible create a local server on Mac to use Ktor ? I look at the site https://ktor.io but i did not find

Hi, I was wondering, some poeple using ktor on GAE? I mean i checked demo on ktor.io but i would love to see "proper way" to acces datastore, use ofy or not, etc etc not to reinvent myslef 🙂 ?

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https://medium.com/@NetflixTechBlog/netflix-oss-and-spring-boot-coming-full-circle-4855947713a0 Not directly Kotlin related but a bug deal because Netflix is adopting Kotlin heavily and this makes Spring Boot more of a de facto standard...

Hello, I am building a rest server with Jersey 2.6. And for DB access, I am trying to switch from Hibernate JPA to JDBI since I kinda feel Hibernate does not work well with Kotlin. I and totally new to jdbi and I got a few questions like: whether it is a good practice to inject DAO with onDemand, how to use enum type, etc. Do you guys have any tutorials or sample projects to start with?

Guys, hello, Im using this framework to create auth2 server with ktor. But i dont understand how can i access methods for auth (Oauth2TokenService class, that i install as a feature) in my endpoints. https://github.com/myndocs/kotlin-oauth2-server Can someone look in it, please

I'm migrating to coroutine 1.0.0 for a SpringBoot app. Previously I can easily create an actor as Spring Bean. How can I create an actor that is injectable for SpringBoot and the new coroutine?

That's pretty cool...a versioned xml doc database 🙂

If you do JSON, it'd be mostly like MongoDB..then you'd have to look at supporting something like their query language which is relatively complicated.

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Has anyone used Hibernate successfully with Kotlin? Checked #hibernate but the channel seems pretty dead.

I have 2 independent servers - one A for user (auth, refresh, details, registration), the other one B - for data. if I want to access data on server B, I need to validate token first of all, that means that in my B server endpoint I need to call a

check

method from A server. Is it correct?

Does someone know how to use multiple conf files for Ktor project ?

Anyone having the same issue as me ?

Hi everyone, do you know a good tool for profiling memory consumption for a kotlin / JVM program ? The integrated Intellijea 2018.3 solution only profile CPU. Thanks for help !

Hi everybody, I've been a huge proponent of Kotlin and helped migrate Airbnb's Android team to Kotlin and am not well underway doing the same at Tonal (https://www.tonal.com/). I'm meeting with our backend team tomorrow to introduce the idea of using Kotlin to them. Right now, they do everything in Go but I think there could be a ton of value to having shared language/code/knowledge/tooling. Plus, Kotlin is wonderful. However, I have very limited experience with Java/Kotlin on the server side of things. Any suggestions for talking points or ideas I could lead that discussion with?

Hi everyone! I've recently decided that I want to rewrite my currently static portfolio website/blog as a dynamically served website with a server (mainly with the purpose of adding additional functionality). I love Kotlin and when looking into using it for the server I came across ktor and exposed which I think I would work well together. However, most of the server-side code I've written has been in Ruby under the Rails framework, which is super opinionated and pushes for a predefined structure that I certainly followed. Now I've started working with ktor and exposed and I'm a bit at a loss for how to organize my code. Have any of you figured out a way to organize your classes, functions, files, etc. that's scaled well?

I'm trying to run a ktor API on my raspberrypi but I get this error

io.ktor.client.call.ReceivePipelineException: Fail to run receive pipeline

doesn't happen locally, I'm thinking maybe I need to configure the client differently or something?

Hi everyone, is there a library out there that can generate Kotlin data class from SOAP WSDL?

I am trying to understand Ktor form authentication. To do so, I have created a very simple web app but I am stuck on an error for multiple hours and documentation seems incomplete or outdated.

fun Application.bank() {
    install(Authentication) {
        form("form") {
            challenge = FormAuthChallenge.Unauthorized
            passwordParamName = "password"
            userParamName = "username"
            validate { credentials ->
                println("Credentials : ${credentials.name}, ${credentials.password}")
                when {
                    credentials.name == "John" && credentials.password == "pa$$w0rd" -> UserIdPrincipal("John")
                    else -> null
                }
            }
        }
    }
    routing {
        authenticate("form") {
            route("account") {
                post {
                    call.respond(HttpStatusCode.OK, "connected")
                }
            }
        }
    }
}

To access the route /account I send this HTTP request :

POST <http://0.0.0.0:8081/account?username=Louis&password=pass>

But this raises an exception :

io.ktor.features.CannotTransformContentToTypeException: Cannot transform this request's content to class io.ktor.http.Parameters

So I guess I should not give credentials to the server via POST body. I have tried sending credentials in JSON with ContentNegocition installed but I get a similar error. If someone could help me ... I will update the documentation once I know how it works.

Hello. Maybe do you have some insights of my problem? I have a backend with many cores, C10k traffic, and DB. DB is the slowest part. Of course, I am using a Ktor. Question, which DB driver performs better (assume server hits 100% load): - sync driver. - async + coroutines. A thread is able to process another request while a DB query is working. I did some benchmarks on the artificial system and found, the sync driver was able to produce ~10% more reqs/sec. Also, the async driver takes much more memory on the same load. I assume coroutines have some overhead. I even tried to limit IO bandwidth inside docker to emulate IO cap. The sync driver was faster. However, I am not sure my benchmark was good. So, my question, why I should use async + coroutines? Maybe do you have some insights from real-world applications?

Please can someone with JAX-RS and Kotlin have a look at this question: https://stackoverflow.com/q/54674096/9506917