Hi everyone, I have a question concerning JSON de-/serialisation with the Kotless DSL: I have an easy example that multiplies two values. Therefore I want to extract a POST body like this:

{
  "value1": 20,
  "value2": 3.33
}

The result should look like this:

{
  "result": 66.6
}

Am I doing this right?

@Post("/multiply")
fun multiply(): String {
    val objectMapper = createObjectMapper()
    val requestBody = KotlessContext.HTTP.request.body?.let { String(it, UTF_8) }
    val request = objectMapper.readValue(requestBody, Request::class.java)
    val result = request.value1 * request.value2
    return objectMapper.writeValueAsString(Response(result))
}
data class Request(
    val value1: BigDecimal,
    val value2: BigDecimal
)

data class Response(
    val result: BigDecimal
)

private fun createObjectMapper() = ObjectMapper().findAndRegisterModules().setSerializationInclusion(NON_NULL)

Is this the only way to extract the body and create a JSON response? Or ist there anything more convenient like

@RequestBody

or to create the JSON response?

Hi folks, as we’re still in the evaluation process of Kotless I just wondered how “future-proof” the framework is. It looks really promising, however the last release was already 6 months ago. No pressure from our side, I’m just curious if it’s still relevant and will be developed and updated in the future. Many thanks! 🙂

Hello! Any plans on adding support for “Amazon RDS” (relational database)? Thank you 😊

BTW, I have released 0.1.7-beta-5 with support of Kotlin 1.4.21. BUT, it requires Gradle 6.8.1+

Hey @TanVD, could you please take a quick look at this? https://github.com/JetBrains/kotless/pull/95

Hi I just deployed the spring example url shortener @TanVD - but the CSS and JS are 404'ing The lambda is deployed at: https://x.amazonaws.com/STAGE The html/js looks for it at the root i.e. https://x.amazonaws.com/css/shortener.css But the actual API Gateway mappings are at: https://x.amazonaws.com/STAGE/css/shortener.css The only thing I removed is this

webapp {
        route53 = Route53("spring.short", "<http://kotless.io|kotless.io>")
    }

Wondering if this is expected behaviour or am I doing something wrong? Or is the sample broken? It works fine locally.

Hi there I tried to deploy the kotless shortner example, but the CSS and JS are giving 403 Forbidden errors (this is slightly different from the above question, which was spring and 404). I also commented out the route53 stanza. I’ve tried a few different things, in terms of access on the bucket, using a new bucket with open permissions, etc, but nothing has worked so far. It makes testing things hard since the JS for the button doesn’t work…

Hi there, I’m trying to pass a json object into a post request, my function looks like this:

@Post("/createItems")
fun createItems(info: ItemInfo): HttpResponse {
    ItemStorage.createItems(info)
    return HttpResponse(201, MimeType.JSON, "")
}

data class ItemInfo(
    val name: String,
    val count: Int,
    val details: String,
)

But when I make the following call, I get an error that the parameter is missing:

POST /1/createItems HTTP/1.1
Accept: application/json, */*;q=0.5

{
    "info": {
        "count": 10,
        "details": "test1 details",
        "name": "test1"
    }
}

Response is:

HTTP/1.1 500 Internal Server Error
Connection: keep-alive
Content-Length: 35
Content-Type: text/plain
Date: Wed, 03 Mar 2021 13:56:42 GMT

Required argument 'info' is missing

Hi there, we’re having problems with the generated terraform file. And have no clue what we have to change, perhaps someone here has a hint. The Gradle error when running e.g.

plan

is:

Error: Invalid resource name

  on <http://breakeven.tf|breakeven.tf> line 77, in resource "aws_iam_role" "0":
  77: resource "aws_iam_role" "0" {

A name must start with a letter or underscore and may contain only letters,
digits, underscores, and dashes.

The corresponding part of the terraform script looks like this:

resource "aws_iam_role" "0" {
  name = "0"
  assume_role_policy = data.aws_iam_policy_document.0_assume.json
}

The part of the

build.gradle.kts

like this:

kotless {
    config {
        bucket = "our-bucket-name"

        terraform {
            profile = "my-aws-user"
            region = "eu-central-1"
        }
    }
    webapp {
        lambda {
            kotless {
                packages = setOf("info.novatec")
            }
        }
    }
}

We’ve tried different Kotless versions (0.1.6, 0.1.7-beta-4, 0.1.7-beta-5). Anyone an idea what we’re doing wrong?

Hello I have been trying to compile a simple

hello world

Ktor

app with kotless plugin and Kotlin gradle DSL but keep hitting following error at gradle sync step

> Failed to notify project evaluation listener.
   > Could not initialize class io.kotless.parser.KotlessDescriptor

Here is gradle script that I have written

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import io.kotless.plugin.gradle.dsl.kotless
import io.kotless.resource.Lambda.Config.*

plugins {
    kotlin("jvm") version "1.4.21"
    id ("tanvd.kosogor") version "1.0.10"
    id("io.kotless") version "0.1.7-beta-5" apply true
}

buildscript {
    repositories {
        mavenCentral()
        gradlePluginPortal()
        jcenter()
    }

    dependencies {
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.21")
        classpath("io.kotless:gradle:0.1.7-beta-5")
    }
}

tasks.withType<KotlinCompile> {
    kotlinOptions {
        jvmTarget = "1.8"
        languageVersion = "1.4"
        apiVersion = "1.4"
    }
}

repositories {
    mavenCentral()
    gradlePluginPortal()
    jcenter()
}

group = "dev.abhishekbansal"
version = "1.0"


dependencies {
    implementation("io.kotless", "ktor-lang", "0.1.7-beta-5")
}

Here is link to full project https://github.com/abhishekBansal/hello-world-ktor-aws-lambda Any pointers here?

[SOLVED] If I have existing Ktor application do I still need to wrap application code in a

Kotless

child class like this

class Server : Kotless() {}

? I only want to run my application locally and without DynamoDB emulation.

[Solved] What is the best way to manage different deployment environments in Kotless? Like

staging

,

production

etc? One way that I can think of right now is to do this

profile = System.getEnv("ENV_PROFILE")

and so on instead of hardcoding them. And how can I set some of the environment variables on lambda. Like for instance if I am writing a service which calls some other service but that other service URL depends on an environment variable. Is that kind of configuration supported?

Is there a way to skip API Gateway configuration in kotless and just create the lambda?

Hello, I am trying to deploy a hello world application to AWS with GraalVM but I get this error :

Unable to find method ''boolean com.google.common.base.Platform.stringIsNullOrEmpty(java.lang.String)''
'boolean com.google.common.base.Platform.stringIsNullOrEmpty(java.lang.String)'

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network)
The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.

Stop Gradle build processes (requires restart)
Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

I deleted my gradle cache and it didn't solve the issue. My first intuition would be to believe I am missing something in my

reflection.json

but I am not sure. I can build the project, I can deploy locally, I cannot deploy to AWS. Versions : • JVM : 1.4.21 • Gradle : 7.0 • JVM Target: 11 • Kotless: 0.1.7-beta-5 • DSL: ktor-lang 0.1.7-beta-5 Here is the repo : https://github.com/AlexandreBrown/KotlessSetup Any help is appreciated

Hiya! I'm trying to see if kotless will work for us; I have a simple hello world running locally just fine, but whenever I try to generate, I get

Execution failed for task ':serverless:generate'.
> 'org.jetbrains.kotlin.analyzer.AnalysisResult org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration$default(org.jetbrains.kotlin.com.intellij.openapi.project.Project, java.util.Collection, org.jetbrains.kotlin.resolve.BindingTrace, org.jetbrains.kotlin.config.CompilerConfiguration, kotlin.jvm.functions.Function1, kotlin.jvm.functions.Function2, org.jetbrains.kotlin.com.intellij.psi.search.GlobalSearchScope, int, java.lang.Object)'

I have no idea where to go looking for how to troubleshoot this. Any suggestions?

Heyy I'm trying run my kotless project after adding the AWS dependency (similar to github example repo) But It is showing this error

Execution failed for task ':local'.
> Could not resolve all files for configuration ':runtimeClasspath'.
   > Could not find io.kotless:kotless-lang-aws:0.1.7-beta-5.
     Searched in the following locations:
       - <https://dl.google.com/dl/android/maven2/io/kotless/kotless-lang-aws/0.1.7-beta-5/kotless-lang-aws-0.1.7-beta-5.pom>
       - <https://repo.maven.apache.org/maven2/io/kotless/kotless-lang-aws/0.1.7-beta-5/kotless-lang-aws-0.1.7-beta-5.pom>
       - <https://jcenter.bintray.com/io/kotless/kotless-lang-aws/0.1.7-beta-5/kotless-lang-aws-0.1.7-beta-5.pom>
       - <https://maven.springframework.org/release/io/kotless/kotless-lang-aws/0.1.7-beta-5/kotless-lang-aws-0.1.7-beta-5.pom>
       - <https://maven.restlet.com/io/kotless/kotless-lang-aws/0.1.7-beta-5/kotless-lang-aws-0.1.7-beta-5.pom>
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib/kotless-lang-aws-0.1.7-beta-5.jar
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib/kotless-lang-aws.jar
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib1/kotless-lang-aws-0.1.7-beta-5.jar
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib1/kotless-lang-aws.jar
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib2/kotless-lang-aws-0.1.7-beta-5.jar
       - file:/Users/puliajay/Documents/kotlin_backend/Sample_Kotless/lib2/kotless-lang-aws.jar
     Required by:
         project :

Please tell me how to resolve this error.

Does

kotless

have a relationship to

ktor

?

I'm struggling with a "Hello world" example with kotless 0.1.7-beta-5, kotlin 1.4.21 - I can run locally, but the

deploy

or

plan

tasks fail with the error:

Execution failed for task ':initialize'.
> Command failed: 'D:\Development\Experiments\Kotless\KotlessTestBeta\build\kotless-bin\terraform  '

* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':initialize'.
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:188)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$$Lambda$481/0x0000000000000000.accept(Unknown Source)

In my build folder there is no folder called

kotless-bin\terraform

.

Hey guys, what is the status of kotless? Is it abandoned or something?

Hi, using Kotless + Ktor I've just added my first route with a route parameter -

get("/load-markdown/{s3key}")

- this is working fine locally, but when I try to deploy to AWS, terraform blows up with an Invalid resource name message:

Error: Invalid resource name

  on <http://KotlessTestBeta.tf|KotlessTestBeta.tf> line 79, in resource "aws_api_gateway_integration" "load_markdown_{s3key}_get":
  79: resource "aws_api_gateway_integration" "load_markdown_{s3key}_get" {

A name must start with a letter or underscore and may contain only letters,
digits, underscores, and dashes.

What horrible thing have I done wrong? (Kotless 0.2.0 compiled from source).

Hi everyone, I would like to help developing kotless. Is there a good issue to start with? The existing ones hardly have any tags assigned, so there is no "good for starters" issue. Any advice?

Hi everyone. I am playing around with kotless. So far so good. And I am deploying my test project to aws. In order to do that I am trying to use an aws role with minimal permissions. In a real project could be problematic to use a role with full admin permissions.

hey guys, noob question, is there currently any support for something real-time like websockets in kotless?

Does it possible to runs #kotless with Kotlin 1.5.z using latest version #kotless? (even though it says required 1.3.z)

Has anyone managed to debug kotless' Gradle task "local" with IntelliJ breakpoints? I have attempted to run with jvmarg

-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005

on jvm target 11, and subsequently my Remove JVM debug manages to connect, loggint the following message:

Connected to the target VM, address: 'localhost:5005', transport: 'socket'

. When I attempt to run my route endpoints IntelliJ does not stop on my breakpoints

Using kotless 0.2.0, kotlin 1.5.32, gradle 7.4 I get the following error. Any suggestions?

$ ./gradlew deploy
> Task :generate FAILED

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':generate' (type 'KotlessGenerateTask').
  - In plugin 'io.kotless' type 'io.kotless.plugin.gradle.tasks.gen.KotlessGenerateTask' property 'myTargetVersion' doesn't have a configured value.

what's the status in terms of integration and support of Terraform in Kotless?

Has anyone found an alternative to Kotless for serverless development? I know of Osiris https://github.com/cjkent/osiris , but like Kotless it appears to be dead.

Hi @TanVD We are excited about Kotless at VirtusLab and would like to create a PoC of Kotless with Pulumi (replacing terraform under the hood). What do you think? Does this make sense? I tested Kotless some time ago and had multiple terraform-related problems. For example, mapping method names to terraform resource names was a bit buggy.

Hi, I'm not sure where to ask, so I'll ask here: I'm a mobile dev and I'm trying to figure out how to set up a backend for a personal project. I expect to only ever need to

GET

data from the backend and I'd like to update that data on deployments (so people can submit updates to a GitHub repo for ease of collaboration). Is this an ideal usecase for serverless? I had a solution in Ktor that was deploying to Heroku, but they got rid of their free tier and now that I'm poking around again, it looks like serverless might naturally align with my usecase a little better (but I'm not sure, since I have no real backend experience to use as a reference point).