I'm confused about SpringApplication.run, I think I need to use a coorutine. ATM I have this SpringApplication.run statement in my main and 3 lines of other things I need to do every 5 minutes; how would I accomplish that?

In case anyone is interested, I just uploaded a sample of a kotlin project that uses Kotlin, bazel and gRPC with a small client and server: https://github.com/jdemeulenaere/kotlin-bazel-grpc. The documentation of gRPC and bazel are not really uptodate so I thought it might interest people who want to play with those tools 🙂. Note that I don't use any best practices (e.g. don't use blocking client) or fancy feature (e.g. coroutines) that we normally should, it's really just the simplest example I could do

any ktor admin panel template?

Hey guys! Does anyone know how to make Kotlin compiler understand that a method return type is nullable? There is a class

org.springframework.transaction.support.AbstractPlatformTransactionManager

which method

doGetTransaction

is actually nullable, but Kotlin compiler doesn't understand that. In the first picture - a method itself and in the second one - method which is used after

doGetTransaction

with nullable param. I'm 100% sure

doGetTransaction

return type should be treated as nullable.

I'm relatively new to kotlin and we want to introduce it to our (big) Java/Spring application. I was wondering if

kotlin-jpa

is the way to go when working with hibernate? It makes it easier to define

@Entity

classes as data-classes, but is that the best way 🤔

Hi, any one has faced this problem?

Oh, and CGLIB is what Spring is using to proxy the controller class, if that matters

I am in the process of converting Java samples to Kotlin in Spring reference documentation

Hi all. i am trying to generate kotlin from a Yaml file (with swagger codegen). And i have a lot of dependency problem, does anyone has already try it ?

Hello everyone, I have some dump question about Web Application, I’m newbie in Web industry . I have used

Ktor

for building my own API . But I’m so curious about Web Architecture between Java and Ktor. So what different Web Application between building base on `java`(Spring Java EE) and

Kotlin

(Ktor) ??? What is the relationship of Java and Kotlin when developing web? What different ? what the same things? Thanks

Hello everyone, I have a question about

Certificates- JKS file format - CER file format

I’m using Heroku for deploying my app , its running on HTTPs look like

<https://myapp.herokuapp.com/>

So Do I need to generate a Certificates, JSK, CER for security ?? Ref: https://ktor.io/servers/certificates.html#cer-file-format

Hello Everyone, I need some inputs regarding ktor swagger integration. I am prepping up to replace spring boot with ktor and want to showcase ktor to my team. So far the only missing feature I have found is Swagger support. This might prevent us to adopt ktor in near future. I haven’t so far found any definite answer or road map on the internet as well. Any thoughts!

Hello everyone, I curious about chat system, I want to build chat system on Ktor framework. so Do you think Socket.IO can have powerful to build medium/large chat system.? Or Can you suggestion some technical to build medium/large chat system ? Thanks

We've added a tutorial about the http4k OpenApi3 support to the website. Feedback (or upvotes 🙂 ) very welcome: https://www.reddit.com/r/Kotlin/comments/d36z03/tutorial_documenting_http4k_apis_with_openapi3/

Hey folks! Building a server with Ktor connected to a Postgres DB, and I am also planning to integrate Dagger for DI later on- does anyone know of any good resources/tutorials for Dagger + Kotlin (or, more specifically, Dagger with Ktor)? ALSO, I’m looking to learn Dropwizard with Kotlin- anyone know of any good resources for that as well?

Hello everyone, I am trying to get a #ktor api server jar build, and i tried both documented options with shadowJar and simple gradle jar build, and in both cases when i try running the jar via java -jar jarname.jar i get the following error: Error: Could not find or load main class io.ktor.server.netty.EngineMain. Could somebody please point me in the right direction how I can get the jar built and working ? In IntelliJ the server runs ok.

Does anyone have an overview of Kotlin specific improvements in the upcoming Spring 5.2 release?

Hi everyone! Sorry to come in with the cliché-ish question. But I am planning a talk in my company to try and lure some stakeholders to give it a try with kotlin but I am strugling to find success cases for mid to large scale companies that have made the shift for server side applications. Our stack is composed of microservices using Spring Boot + Kafka. If anyone has handy resources with stories of known or tech companies that have made the shift in that area and can share, that would be lovely. unfortunatelly, the most exciting stories I find are related to mobile apps which would not be that interesting for my group. Thank you!

👋 With

kotlinx.html

, is there a way to apply a class to all children of a tag? e.g. if I have

fun BODY.card(block: DIV.() -> Unit = {}) {
    div("card") {
        // I want to apply the "section" class to 
        // the top-level tags here
        block()
    }
}

https://github.com/kotlin/kotlinx.html/wiki/Interceptors mentions the ability to transform some HTML but doesn't actually say how. (I know this isn't best practice for CSS but I'm trying to make some generic functions for a CSS framework I'm using)

I have a single threaded context, is there a way to query if some coroutine is running in that context at any given time?

Where do you guys host you Kotlin-based servers? Ideally where you can also have a MongoDB running. Currently I use Heroku + MongoDB Atlas but performance wise it doesn't seem like a good fit 🤔

Hi, I'm starting a Kotlin Backend + Spring Boot and don't know what DI framework use, which do you recommend?

Hey guys. Has anybody found a good approach for backward & forward API compatibility based on capabilities rather than API versioning? Maybe even with Ktor & Kotlin Serialization. With capabilities-based I mean roughly like this:

Spring is exciting and terrifying at same time

Can someone please help me out https://stackoverflow.com/questions/58263749/java-lang-noclassdeffounderror-com-google-api-core-apifuture

Hey guys, is the process of hosting a spring application built with Kotlin same as java?

Hi, could you purpose me a book for Kotlin server side. Thanks.

Why is that nobody ever talks about dropwizard and kotlin together, am I missing something?

Hi all! For those who work not only with servers, but also serverless 🙂 (still web though) Kotless version 0.1.1 was released (https://github.com/JetBrains/kotless) Kotless stands for Kotlin serverless framework, it aims to reduce the routine of serverless deployment creation and generates it straight from the code of the application itself. Right now it supports deployment to AWS of API Gateway, scheduled jobs, granular permissions granting, static resources and providers familiar for all server-developers JAX RS-like interface. Take a look and join the discussion in #kotless