Kotlin DSL support

[crummy]

Shadow Version

2.0.0

Gradle Version

4.1

Expected Behavior

I should be able to run ./gradlew shadowJar with a build.gradle.kts file

Actual Behavior

Task 'shadowJar' not found in root project 'hello-world'.

Gradle Build Script(s)

import org.gradle.api.JavaVersion
import org.gradle.kotlin.dsl.*


buildscript {
    repositories {
        maven {
            setUrl("https://plugins.gradle.org/m2/")
        }
    }
    dependencies {
        classpath("com.github.jengelman.gradle.plugins:shadow:2.0.0")
    }
}

plugins {
    application
}

application {
    mainClassName = "samples.HelloWorld"
}

java {
    sourceCompatibility = JavaVersion.VERSION_1_7
    targetCompatibility = JavaVersion.VERSION_1_7
}

dependencies {
    testCompile("junit:junit:4.12")
}

repositories {
    jcenter()
}

[thiagogcm]

try this

import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
...

tasks {
    "shadowJar"(ShadowJar::class) {
        baseName = project.name
        classifier = null
        version = null
    }
...
}

[crummy]

That succeeded without any errors, but it doesn't seem to be picking up my main class: no main manifest attribute...

[crummy]

Additionally, the shadow jar seems to be empty. I changed your suggestion to this so I could separate the jars:

tasks {
    "shadowJar"(ShadowJar::class) {
        baseName = project.name + "-all"
        classifier = null
        version = null
    }
}

But here's the result:

 ~/code/kotlin-dsl/samples/hello-world   master ●  ./gradlew build shadowJar
Starting a Gradle Daemon (subsequent builds will be faster)

BUILD SUCCESSFUL in 11s
8 actionable tasks: 7 executed, 1 up-to-date
 ~/code/kotlin-dsl/samples/hello-world   master ●  jar -tvf build/libs/hello-world.jar
     0 Thu Aug 17 17:01:40 CEST 2017 META-INF/
    25 Thu Aug 17 09:24:34 CEST 2017 META-INF/MANIFEST.MF
     0 Thu Aug 17 09:24:34 CEST 2017 samples/
   637 Thu Aug 17 09:24:34 CEST 2017 samples/HelloWorld.class
 ~/code/kotlin-dsl/samples/hello-world   master ●  jar -tvf build/libs/hello-world-all.jar
     0 Thu Aug 17 17:01:42 CEST 2017 META-INF/
    25 Thu Aug 17 17:01:42 CEST 2017 META-INF/MANIFEST.MF

[mikroskeem]

Any update on this?

[johnrengelman]

@crummy you didn't actually apply the shadow plugin in your example build file. You've added teh jar to the classpath, but you haven't applied the plugin.

The example that @thiagogcm gives doesn't work because it's just creating a standalone ShadowJar task that isn't autoconfigured.

[THUFIR]

Perhaps there's a preliminary step before:

import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar

as here:

https://stackoverflow.com/q/48659849/262852

[mikaelhg]

Since I originally came to this issue page looking for a solution for customizing ShadowJar tasks in Kotlin, I'd better leave the answer I came up with:

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar

plugins {
    kotlin("jvm") version "1.2.51"
    id("com.github.johnrengelman.shadow") version "2.0.4"
    application
}

group = "io.mikael"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
}

dependencies {
    implementation(kotlin("stdlib-jdk8"))
    implementation("io.pebbletemplates:pebble:3.0.0")
    implementation("com.atlassian.commonmark:commonmark:0.11.0")
    implementation("org.yaml:snakeyaml:1.21")
    implementation("org.slf4j:slf4j-nop:1.7.25")
}

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

application {
    mainClassName = "io.mikael.static.AppKt"
}

tasks.withType<ShadowJar> {
    baseName = "app"
    classifier = ""
    version = ""
}

[bk-mz]

import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar

tasks {
    named<ShadowJar>("shadowJar") {
        archiveBaseName.set("app")
        mergeServiceFiles()
        manifest {
            attributes(mapOf("Main-Class" to "com.app.App"))
        }
    }
}