gradle 8.1: Update code and build for Gradle 8.1 and Java 20

.github/workflows/cibuild.yml

@@ -39,7 +39,7 @@ jobs:
         - '8'
         - '11'
         - '17'
-        - '19'
+        - '20'
     name: Build JDK${{ matrix.java }} ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:

README.md

@@ -76,7 +76,9 @@ tasks.named("jar") {
 This plugin requires at least Gradle 6.1 for Java 8 to Java 15,
 at least Gradle 7.0 for Java 16,
 at least Gradle 7.3 for Java 17,
-and at least Gradle 7.5 for Java 18.
+at least Gradle 7.5 for Java 18,
+at least Gradle 7.6 for Java 19,
+and at least Gradle 8.1 for Java 20.
 
 
 [1]: https://maven.apache.org/shared/maven-archiver/index.html

build.gradle.kts

@@ -1,3 +1,6 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinJvmCompilerOptions
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask
 import java.util.*
 
 plugins {
@@ -26,7 +29,7 @@ localrepo?.let {
 	while (rootGradle.parent != null) {
 		rootGradle = rootGradle.parent!!
 	}
-	val maven_repo_local by extra(rootGradle.startParameter.currentDir.resolve(it).normalize().absolutePath)
+	extra.set("maven_repo_local", rootGradle.startParameter.currentDir.resolve(it).normalize().absolutePath)
 }
 val maven_repo_local: String? by extra
 
@@ -48,13 +51,16 @@ sourceSets {
 }
 
 configurations {
-	val dslCompileOnly by existing {
+	val dslCompileOnly by existing
+	dslCompileOnly {
 		extendsFrom(compileOnly.get())
 	}
-	val dslImplementation by existing {
+	val dslImplementation by existing
+	dslImplementation {
 		extendsFrom(implementation.get())
 	}
-	val dslRuntimeOnly by existing {
+	val dslRuntimeOnly by existing
+	dslRuntimeOnly {
 		extendsFrom(runtimeOnly.get())
 	}
 }
@@ -67,24 +73,19 @@ dependencies {
 
 // Gradle plugin descriptions
 gradlePlugin {
+	website.set("https://github.com/bjhargrave/add-maven-descriptor")
+	vcsUrl.set("https://github.com/bjhargrave/add-maven-descriptor.git")
 	plugins {
 		create("AddMavenDescriptor") {
 			id = "dev.hargrave.addmavendescriptor"
 			implementationClass = "dev.hargrave.gradle.addmavendescriptor.AddMavenDescriptorPlugin"
 			displayName = "Add Maven Descriptor Plugin"
 			description = "Gradle Plugin to add Maven descriptor information to built jars."
+			tags.set(listOf("maven", "pom"))
 		}
 	}
 }
 
-// Gradle plugin bundle description
-pluginBundle {
-	website = "https://github.com/bjhargrave/add-maven-descriptor"
-	vcsUrl = "https://github.com/bjhargrave/add-maven-descriptor.git"
-	description = "Gradle Plugin to add Maven descriptor information to built jars."
-	tags = listOf("maven", "pom")
-}
-
 publishing {
 	publications {
 		// Main plugin publication
@@ -94,10 +95,12 @@ publishing {
 				description.set("Add Maven Descriptor")
 			}
 			val publication = this
-			tasks.register<WriteProperties>("generatePomPropertiesFor${publication.name.capitalize()}Publication") {
+			tasks.register<WriteProperties>("generatePomPropertiesFor${publication.name.replaceFirstChar {
+				it.titlecase(Locale.ROOT)
+			}}Publication") {
 				description = "Generates the Maven pom.properties file for publication '${publication.name}'."
 				group = PublishingPlugin.PUBLISH_TASK_GROUP
-				setOutputFile(layout.buildDirectory.file("publications/${publication.name}/pom-default.properties"))
+				getDestinationFile().value(layout.buildDirectory.file("publications/${publication.name}/pom-default.properties"))
 				property("groupId", provider { publication.groupId })
 				property("artifactId", provider { publication.artifactId })
 				property("version", provider { publication.version })
@@ -142,6 +145,13 @@ publishing {
 	}
 }
 
+// Use same jvm target for kotlin code as for java code
+tasks.withType<KotlinCompilationTask<KotlinJvmCompilerOptions>>().configureEach {
+	compilerOptions {
+		jvmTarget.set(JvmTarget.fromTarget(java.targetCompatibility.toString()))
+	}
+}
+
 // Disable gradle module metadata
 tasks.withType<GenerateModuleMetadata>().configureEach {
 	enabled = false
@@ -209,7 +219,7 @@ tasks.test {
 	}
 	val testresourcesSource = layout.projectDirectory.dir("testresources")
 	inputs.files(testresourcesSource).withPathSensitivity(PathSensitivity.RELATIVE).withPropertyName("testresources")
-	systemProperty("org.gradle.warning.mode", gradle.startParameter.warningMode.name.toLowerCase(Locale.ROOT))
+	systemProperty("org.gradle.warning.mode", gradle.startParameter.warningMode.name.lowercase(Locale.ROOT))
 	maven_repo_local?.let {
 		systemProperty("maven.repo.local", it)
 	}

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
 networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -85,9 +85,6 @@ done
 APP_BASE_NAME=${0##*/}
 APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
 
@@ -144,15 +141,15 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -197,6 +194,10 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
 # Collect all arguments for the java command;
 #   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
 #     shell script including quotes and variable substitutions, so put them in

src/main/java/dev/hargrave/gradle/addmavendescriptor/AddMavenDescriptorPluginExtension.java

@@ -1,18 +1,22 @@
 package dev.hargrave.gradle.addmavendescriptor;
 
 import java.util.SortedSet;
+import java.util.function.BiConsumer;
 
 import org.gradle.api.NamedDomainObjectSet;
 import org.gradle.api.Project;
 import org.gradle.api.file.ProjectLayout;
+import org.gradle.api.file.RegularFile;
 import org.gradle.api.plugins.PluginManager;
 import org.gradle.api.provider.Property;
+import org.gradle.api.provider.Provider;
 import org.gradle.api.provider.ProviderFactory;
 import org.gradle.api.publish.PublishingExtension;
 import org.gradle.api.publish.maven.MavenPublication;
 import org.gradle.api.publish.plugins.PublishingPlugin;
 import org.gradle.api.tasks.TaskContainer;
 import org.gradle.api.tasks.WriteProperties;
+import org.gradle.util.GradleVersion;
 
 /**
  * Plugin extension to specify the MavenPublication name to
@@ -108,14 +112,19 @@ private void configureProject(Project project) {
 		ProjectLayout layout = project.getLayout();
 		ProviderFactory providers = project.getProviders();
 
+		@SuppressWarnings("deprecation")
+		BiConsumer<WriteProperties, Provider<RegularFile>> setDestinationFile = isGradleCompatible("8.1") ? //
+			(task, destinationFile) -> task.getDestinationFile()
+				.value(destinationFile) : //
+			(task, destinationFile) -> task.setOutputFile(destinationFile);
 		// Register generatePomProperties task for each MavenPublication
 		publications().configureEach(publication -> {
 			String pomPropertiesTaskName = "generatePomPropertiesFor" + capitalize(publication.getName()) + "Publication";
 			tasks.register(pomPropertiesTaskName, WriteProperties.class, task -> {
 				String publicationName = publication.getName();
 				task.setDescription("Generates the Maven pom.properties file for publication '" + publicationName + "'.");
 				task.setGroup(PublishingPlugin.PUBLISH_TASK_GROUP);
-				task.setOutputFile(layout.getBuildDirectory()
+				setDestinationFile.accept(task, layout.getBuildDirectory()
 					.file("publications/" + publicationName + "/pom-default.properties"));
 				task.property("groupId", providers.provider(publication::getGroupId));
 				task.property("artifactId", providers.provider(publication::getArtifactId));
@@ -148,4 +157,15 @@ static String capitalize(String string) {
 		}
 		return new String(codePoints, 0, count);
 	}
+
+	/**
+	 * Return whether the current Gradle is at least the specified version.
+	 *
+	 * @param requestedVersion The requested Gradle version.
+	 * @return Whether the current Gradle is at least the specified version.
+	 */
+	static boolean isGradleCompatible(String requestedVersion) {
+		return GradleVersion.current()
+			.compareTo(GradleVersion.version(requestedVersion)) >= 0;
+	}
 }

src/test/groovy/dev/hargrave/gradle/addmavendescriptor/TestAddMavenDescriptorPlugin.groovy

@@ -796,7 +796,7 @@ class TestAddMavenDescriptorPlugin extends Specification {
 
 		when:
 		UTF8Properties props = new UTF8Properties()
-		def result = TestHelper.getGradleRunner()
+		def result = TestHelper.getGradleRunner("7.6")
 			.withProjectDir(testProjectDir)
 			.withArguments("--parallel", "--stacktrace", "--debug", "build")
 			.withPluginClasspath()
@@ -842,7 +842,7 @@ class TestAddMavenDescriptorPlugin extends Specification {
 		jartask_jar.close()
 
 		when:
-		result = TestHelper.getGradleRunner()
+		result = TestHelper.getGradleRunner("7.6")
 			.withProjectDir(testProjectDir)
 			.withArguments("--parallel", "--stacktrace", "--debug", "build")
 			.withPluginClasspath()

src/test/groovy/dev/hargrave/gradle/addmavendescriptor/TestHelper.groovy

@@ -29,6 +29,9 @@ class TestHelper {
 	}
 
 	private static String gradleVersion() {
+		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_20)) {
+			return "8.1"
+		}
 		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_19)) {
 			return "7.6"
 		}

testresources/plugin14/build.gradle.kts

@@ -7,7 +7,7 @@ plugins {
 	id("dev.hargrave.addmavendescriptor")
 	groovy
 	`kotlin-dsl`
-	id("com.gradle.plugin-publish") version "1.0.0"
+	id("com.gradle.plugin-publish") version "1.2.0"
 }
 
 group = "test.addmavendescriptor.gradle"
@@ -25,24 +25,19 @@ dependencies {
 
 // Gradle plugin description
 gradlePlugin {
+	website.set("https://github.com/bjhargrave/add-maven-descriptor")
+	vcsUrl.set("https://github.com/bjhargrave/add-maven-descriptor.git")
 	plugins {
 		create("Test") {
 			id = "test.addmavendescriptor.gradle"
 			implementationClass = "doubler.impl.DoublerImpl"
 			displayName = "Test Gradle Plugin"
 			description = "Gradle Plugin for a test."
+			tags.set(listOf("gradle", "maven"))
 		}
 	}
 }
 
-// Gradle plugin bundle description
-pluginBundle {
-	website = "https://github.com/bjhargrave/add-maven-descriptor"
-	vcsUrl = "https://github.com/bjhargrave/add-maven-descriptor.git"
-	description = "Gradle Plugin for a test."
-	tags = listOf("gradle", "maven")
-}
-
 publishing {
 	publications {
 		create<MavenPublication>("pluginMaven") {