How to create sourceset in custom plugin - gradle

Question

I'm writing custom plugin which should create number of sourcesets depends on plugin extension.
How can I do it in apply method?
Here's my code snippets (both don't work), labels - list from extension:
1.
project.sourceSets {
labels.each { info ->
"${info.lower}Src" {
java.srcDirs = ['src'] + info.srcPostfix.collect { postfix -> "src_custom/${postfix}" }
}
}
main { java.srcDirs = ['src'] + labels.collect { info -> "src_custom/${info.lower}" } }
test { java.srcDirs = ['test'] + labels.collect { info -> "test_custom/${info.lower}" } }
}
2.
labels.each { info ->
SourceSet modelSrc = project.sourceSets.create("${info.lower}Src")
modelSrc.getJava().setSrcDirs(['src'] + info.srcPostfix.collect { postfix -> "src_custom/${postfix}" })
}
SourceSetContainer sourceSets = project.convention.getPlugin(JavaPluginConvention).sourceSets
SourceSet mainSourceSet = sourceSets.getByName(MAIN_SOURCE_SET_NAME)
mainSourceSet.getJava().setSrcDirs(['src'] + labels.collect { info -> "src_custom/${info.lower}" })
SourceSet testSourceSet = sourceSets.getByName(TEST_SOURCE_SET_NAME)
testSourceSet.getJava().setSrcDirs(['test'] + labels.collect { info -> "test_custom/${info.lower}" })

Answer 1

I know this is old, but here's what I ran into. I needed to create a plugin that would create a sourceSet. What I had before was this in my build.gradle
sourceSets {
myNewSet {
groovy.srcDir file("${project.myNewSet_src}")
resources.srcDir file("${project.myNewSet_resources}")
}
}
So when I created my plugin, in the apply method, I had this:
project.getSourceSets().create("myNewSet", {
groovy.srcDir new File("${project.getProjectDir()}/${project.myNewSet_src}")
resources.srcDir new File("${project.getProjectDir()}/${project.myNewSet_resources}")
});
Hope this helps someone.

Answer 2

Here is an example what does it look like in Kotlin Gradle DSL, configuring Spring Boot's BootRun task project-wide in multiproject build:
tasks {
withType<BootRun> {
val createGitRevisionReport: GitRevisionReportTask by this#tasks
dependsOn(createGitRevisionReport)
val sourceSets = project.convention.getPlugin(JavaPluginConvention::class.java).sourceSets
val additionalSourceSet = sourceSets.create("bootRunAdditionalSourceSet") {
resources.srcDir(createGitRevisionReport.gitRevisionReportDir)
}
sourceResources(additionalSourceSet)
}
}