Launching Quarkus Kotlin Gradle App from IDE fails

[ojacquemart]

Describe the bug
Create a fresh app from code.quarkus.io with the 1.5.2 version:

• build tool: gradle
• extension: kotlin

Create a main App like:

import io.quarkus.runtime.Quarkus
import io.quarkus.runtime.QuarkusApplication

object App {

    @JvmStatic
    fun main(args: Array<String>) {
        Quarkus.run(Main::class.java, *args)
    }

    class Main : QuarkusApplication {
        @Throws(Exception::class)
        override fun run(vararg args: String): Int {
            println("Do startup logic here")
            Quarkus.waitForExit()
            return 0
        }
    }

}

Expected behavior
The app starts

Actual behavior
The app does not start and gives the following exception:

Exception in thread "main" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at io.quarkus.launcher.QuarkusLauncher.launch(QuarkusLauncher.java:50)
	at io.quarkus.runtime.Quarkus.launchFromIDE(Quarkus.java:93)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:79)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:38)
	at org.acme.App.main(App.kt:10)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at io.quarkus.launcher.QuarkusLauncher.launch(QuarkusLauncher.java:47)
	... 4 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException
	at io.quarkus.bootstrap.IDELauncherImpl.launch(IDELauncherImpl.java:30)
	... 9 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException
	at io.quarkus.bootstrap.app.CuratedApplication.runInCl(CuratedApplication.java:134)
	at io.quarkus.bootstrap.app.CuratedApplication.runInAugmentClassLoader(CuratedApplication.java:84)
	at io.quarkus.bootstrap.IDELauncherImpl.launch(IDELauncherImpl.java:28)
	... 9 more
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
	at io.quarkus.deployment.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:325)
	at io.quarkus.deployment.dev.IDEDevModeMain.accept(IDEDevModeMain.java:39)
	at io.quarkus.deployment.dev.IDEDevModeMain.accept(IDEDevModeMain.java:15)
	at io.quarkus.bootstrap.app.CuratedApplication.runInCl(CuratedApplication.java:131)
	... 11 more
Caused by: java.lang.NullPointerException
	at io.quarkus.deployment.dev.IsolatedDevModeMain.lambda$setupRuntimeCompilation$0(IsolatedDevModeMain.java:159)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
	at io.quarkus.deployment.dev.IsolatedDevModeMain.setupRuntimeCompilation(IsolatedDevModeMain.java:159)
	at io.quarkus.deployment.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:296)
	... 14 more

To Reproduce
Steps to reproduce the behavior:

1. generate the app
2. add a main file
3. run the main

Environment (please complete the following information):

• Output of uname -a or ver: windows 10
• Output of java -version: 14.0.1
• GraalVM version (if different from Java):
• Quarkus version or git rev: 1.5.2.Final
• Build tool (ie. output of mvnw --version or gradlew --version): gradle

[quarkusbot]

/cc @quarkusio/devtools

[geoand]

I can reproduce this on Gradle. The same application in Maven works

[aloubyansky]

On master as well @geoand ?

[geoand]

I also tried Java Gradle project and that fails to, so I guess the IDE launcher doesn't work for Gradle?

[geoand]

On master as well @geoand ?

Good question! Let me check

[geoand]

Same thing for master - with a simple Gradle Java project it fails - but I am seeing a different error than OP, most likely because my IDE is trying to launch Gradle or something...

[aloubyansky]

Ok, thanks, we need Gradle workspace discovery for that. @glefloch is looking into that.

[geoand]

Excellent 👌

[aloubyansky]

Should be fixed with #10459