Hi Guys, Is it possible to run another gradlew project from gradlew project- Usecase: I've one backend service using gradlew, and I need to run another gradlew project which will be pulled in CI/CD pipeline. If yes, please suggest the way?

Hey... I'm writing some http endpoints that I want to return immediately and then do their work in the background. Can I use cooroutines for this or would threads be better?

Is there a nice Kotlin shim around `java.lang.Process`/`java.lang.ProcessBuilder` that has been packaged up into a library? Things I’d like: • Optionally captures stdout, stderr & exit status wrapped up as a data class as the return value • Allows piping the stdout of one subprocess as the stdin of another, and capture the final result I’m sort of looking for something like the syntax and ease of plugging other executables together that you get with bash or similar, but in Kotlin so it’s easier to actually write & test the business logic.

import kotlin.random.Random

fun main(args: Array<String>) {
    val quizCreator = QuizCreator()
    quizCreator.makeQuiz()
}

class QuizCreator {
    private val quizInstance = Quiz("", listOf())

    fun makeQuiz() {
        println("Choose quiz name:")

        quizInstance.quizName = readLine().toString()

        while (true) {
            println("New Question? (Y/n)")

            if (readLine()?.lowercase() == "y") {
                var question = Question(null, null)

                println("Question name?")

                question.questionText = readLine()

                println("Question answer?")

                question.questionAnswer = readLine()

                quizInstance.questions.toMutableList().add(question)

                println(quizInstance.questions[0])
            } else {
                println("OK")
                quizInstance.startQuiz()
                break
            }
        }
    }

}


data class Quiz(var quizName: String, val questions: List<Question>) {
    fun startQuiz() {
        for (question in questions) {
            println(question.questionText)

            val answer = readLine()

            if (answer?.lowercase() != question.questionAnswer?.lowercase()) {
                println("Incorrect, the answer was ${question.questionAnswer}")
            } else {
                println("Correct")
            }
        }
    }
}

data class Question(var questionText: String?, var questionAnswer: String?)

ok so I have this code, and for some reason when running this it's saying that the list of questions is empty:

Choose quiz name:
j
New Question? (Y/n)
y
Question name?
j
Question answer?
j
Exception in thread "main" java.lang.IndexOutOfBoundsException: Empty list doesn't contain element at index 0.
	at kotlin.collections.EmptyList.get(Collections.kt:36)
	at kotlin.collections.EmptyList.get(Collections.kt:24)
	at QuizCreator.makeQuiz(Main.kt:32)
	at MainKt.main(Main.kt:5)

Process finished with exit code 1

Does anyone here have any experience mocking an extension function and capturing the lambda parameter? I am using Mockk and I'm getting this error

java.lang.AbstractMethodError: Receiver class kotlin.jvm.functions.Function1$Subclass0 does not define or inherit an implementation of the resolved method 'abstract java.lang.Object invoke(java.lang.Object)' of interface kotlin.jvm.functions.Function1.

Here's my test:

@Test
    fun `attempt 2`() {
        val routing = mockk<Routing>(relaxed = true)

        val configure = slot<Route.() -> Unit>()
        val mockedRoute = mockk<Route>()

        every { any<Route>().static(capture(configure)) } answers {
            configure.captured.invoke(mockedRoute)
            mockedRoute
        }

        var testObj = ResourcePortalModuleRouter(routing, node)
        testObj.attachPortalCoreRoutes()

        verify {
            mockedRoute.default("index")
        }
    }

The error is thrown on the

every

line, and I don't understand why this isn't working

Hey everyone, I’m trying to make an

AutoRefreshToken

interceptor plugin in my Ktor client (

HttpClient

), which is supposed to see if the response is a token time-out error, and if it is, generate a new token and resend the request. For getting the response, should I intercept the

receivePipeline

or the

responsePipeline

?

Hey everyone, how can I copy an

HttpRequest

? I want to send a new request in

responsePipeline

based on the previous request, with a small difference in the body

I wonder how many people out there are using (or interesting in using) Kotlin with the Akka/Lightbend platform

Hey everyone, we have recently started working on developing Google Cloud Functions with Kotlin/JVM but we haven't found any examples on how to use coroutines in this environment. Has anyone worked on this or knows of any examples online we can look at? From what we found, seems like the calls to the cloud functions are blocking so we are using

runBlocking

to call suspend tunctions for now, but it doesn't sound right 🤔

Hi there 🙋‍♂️, is there a way to proguard or using dex on ktor backend application?

I'm from a startup in India called Hypto. We are investing in building some infrastructure and web-services in the fintech space and was exploring gRPC and Kotlin coroutine based server for our webservices. Managed to put together a basic starter for this - https://github.com/hwslabs/grpc-kotlin-starter At some point, we would need to generate clients across multiple programming languages. I'm thinking we should separate the proto files alone into an independent repo and include that as a dependency in the build process of various other repos (each of which is a different programming language). One of those could be the Kotlin server side impl and others would simply be the language-specific client impl. Any thoughts? Has someone tried something like this?

Hello everyone, I'm trying to learn ktor for server side development so can anyone tell me some good blogs for this

Has anyone noticed any differences in Json deserialization when upgrading to kotlin 1.5? We haven’t been able to confirm that it’s that exact change that did it, but it’s one of our guesses. We have some kotlin classes that have multiple @JvmStatic valueOf methods (that take different types), and one private constructor (that takes a long). Previously this was deserializing from json without any configuration. When we upgraded to kotlin 1.5 (from 1.4) and spring-boot 2.5 it stopped working specifically for the Kotlin classes (the java classes that are declared in an identical fashion as far as we can tell still work). We can get it to work by adding @JsonCreator to one of the valueOf methods, but we are a bit concerned that it’s going to be tricky to find all classes where the deserialization is broken.

What is the best kotlin server to use? I’m looking for good compile times, and good compatability / startup times for graalvm. I’ve been nervous to use some of the servers that rely on annotation processors due to compile times.

Hi there! Do you have any recommendations for "scheduling/background jobs" framework other than Quartz? Ideally more kotlin-friendly.

Hi! Is there any solution to build SSL websocket server with ktor in Android? Here I think Android is not main point. Main point is that how I can implement SSL websocket server with ktor. Thanks.

Everyone I'm creating a Pixel art editor for Android called PyxlMoose in Kotlin, come and contribute! https://github.com/realtomjoney/PyxlMoose

Hello everyone, I've been able to build RESTAPI with Ktor, but now I'm planning on building a bill payment platform RESTAPI for mobile, thinking if I could still use Ktor for it

Hi guys, I am running into an error when trying to mock method calls that use inline classes as parameters using mockito. I have uploaded a very small proof of concept on my personal github so that you can see the issue. https://github.com/CarlosR-B/mockito_inline_classes

I’m struggling with micronaut trying to deserialize stuff that isn’t there

Hey guys! Does anyone knows how to order big lists in Kotlin with great performance? Is it possible to use parallel stream? Basically, I have a list of almost 100k records and need to order based on two fields: ID (string) and Date(OffsetDateTime).

Hey guys! Are there any examples on server-side rendering using Kotlin JS node with routing? I'm currently using this GitHub project for the server-side rendering bit: https://github.com/techprd/kotlin_node_js_seed. However, this approach is suitable if there is only 1 component in the project and no routing is involved. Cheers!

Hey guys! I have a server application with standard KTOR configuration (generated with Ktor Project Generator). I wish to configure different build configurations. Here the primary interest is that i can add command line arguments for expose (dbName, password, etc), port, produktion checks, etc. I was not able to find any official documentation regarding that. Has any one accomplished that? Or know how i can do that

Hello folks 👋 Is someone using Quarkus with K for a while? I’d like to know about pain-points when comparing to Boot or Micronaut that seems to have better Kotlin support (and more love from the Kotlin community)

I don’t want to derail @Luiz Aguiar question above, but what makes Ktor a non-contender in these cases? 🙏 @nfrankel @Richard Gomez

Please do a thumbs up if you’d like to see more of Kotlin around: 1. Functional event-driven microservices 2. Cloud-Native Event Stream Processing 3. Unified Batch and Streaming Pipelines 4. Edge IoT Analytics feel free to comment any thoughts - would love other people’s thoughts on where kotlin is headed in the data world [Kotlin, Arrow, Apache Flink, Apache Pulsar, Delta Lake for Lakehouses, Trino and Kubernetes]

Is it possible to let kotlin (ktor) make a beeping sound on the terminal output? On MacOs I could just print:

say "hello"

but when I print this with kotlin it is not working, I also tried

afplay /System/Library/Sounds/Ping.aiff

which is working in terminal, but not when using println or logger.info()

Example how to set up a Ktor Native server using the 2.0.0 EAP releases. https://github.com/ESchouten/KtorNativeServer Slack Conversation

Hello everyone, I've been working with Kotlin, spring boot and microservices on the server side for the last 3 years, I was wondering what do you think would be interesting to write about on a blog post if you could choose on a topic? Testing, deploying to AWS, building resiliency, bootstrapping an app end to end?

Hello everyone, i've been working on Kotlin server application for a while now and i am thinking of adding automated linting checks on future PRs. I've searched a bit on the internet what linting plugins are available for Kotlin. I could not find anything that is official Jetbrains developed. So the question is: 1. Are there any plans of developing an official linting library for Kotlin? 2. Are there any recommendations from Kotlin team what linting library developers should use?