setup docker build

.dockerignore

@@ -0,0 +1,50 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### Git ###
+.git
+.gitignore
+
+### Docker ###
+.dockerignore
+Dockerfile
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

Dockerfile

@@ -0,0 +1,33 @@
+FROM eclipse-temurin:21-jdk-alpine AS build
+
+WORKDIR /root/app
+
+# Download Gradle
+COPY ./gradle ./gradle
+COPY ./gradlew ./
+RUN ./gradlew --no-daemon --info --stacktrace
+
+# Download Dependencies
+COPY ./buildSrc ./buildSrc
+COPY ./settings.gradle.kts ./
+COPY ./bot-api/build.gradle.kts ./bot-api/
+COPY ./bot-database/build.gradle.kts ./bot-database/
+COPY ./management/build.gradle.kts ./management/
+COPY ./server/build.gradle.kts ./server/
+COPY ./bots/ping-bot/build.gradle.kts ./bots/ping-bot/
+COPY ./bots/pizza-bot/build.gradle.kts ./bots/pizza-bot/
+RUN ./gradlew deps --no-daemon --info --stacktrace
+
+# Build Application
+COPY . .
+RUN ./gradlew build :server:jlink --no-daemon --info --stacktrace
+
+FROM alpine:3.19.1
+
+WORKDIR /opt/chat/
+COPY --from=build /root/app/server/build/dist/jre /opt/chat/
+
+ENV JAVA_HOME="/opt/chat"
+ENV JAVA_OPTS="--enable-preview"
+ENV CHAT_BOT_CONFIG="file:/etc/chat/config.json"
+ENTRYPOINT $JAVA_HOME/bin/java $JAVA_OPTS --module eu.jonahbauer.chat.server

bot-api/build.gradle.kts

@@ -20,12 +20,12 @@ java {
     }
 }
 
-val configApi by configurations
 val configCompileOnly by configurations
+val configCompileOnlyApi by configurations
 val configAnnotationProcessor by configurations
 
 dependencies {
-    api(libs.annotations)
+    compileOnlyApi(libs.annotations)
     api(project(path)) {
         capabilities {
             requireCapability("${project.group}:${project.name}-config")
@@ -33,8 +33,8 @@ dependencies {
     }
     implementation(libs.gson)
 
-    configApi(libs.annotations)
     configCompileOnly(libs.lombok)
+    configCompileOnlyApi(libs.annotations)
     configAnnotationProcessor(libs.lombok)
 }
 

bot-database/build.gradle.kts

@@ -7,7 +7,7 @@ group = "eu.jonahbauer.chat"
 version = "0.1.0-SNAPSHOT"
 
 dependencies {
-    api(libs.annotations)
+    compileOnlyApi(libs.annotations)
     implementation(libs.sqlite)
     implementation(libs.hikari)
     implementation(libs.slf4j)

buildSrc/src/main/kotlin/chat-bot.java-conventions.gradle.kts

@@ -35,6 +35,15 @@ tasks.withType<Test> {
     jvmArgs("--enable-preview")
 }
 
+tasks.register("deps") {
+    group = "build"
+    description = "resolves all resolvable configurations"
+
+    doLast {
+        configurations.filter { it.isCanBeResolved }.forEach { it.resolve() }
+    }
+}
+
 val application = extensions.findByType<JavaApplication>()
 application?.apply {
     applicationDefaultJvmArgs = listOf("--enable-preview")

buildSrc/src/main/kotlin/eu/jonahbauer/chat/build/jlink/JLinkTask.kt

@@ -0,0 +1,68 @@
+package eu.jonahbauer.chat.build.jlink
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.ConfigurableFileCollection
+import org.gradle.api.file.DirectoryProperty
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.plugins.JavaPluginExtension
+import org.gradle.api.plugins.internal.JavaPluginHelper
+import org.gradle.api.provider.ListProperty
+import org.gradle.api.tasks.*
+import org.gradle.api.tasks.internal.JavaExecExecutableUtils
+import org.gradle.jvm.toolchain.JavaToolchainService
+import org.gradle.jvm.toolchain.internal.JavaExecutableUtils
+import org.gradle.kotlin.dsl.getByType
+
+abstract class JLinkTask : DefaultTask() {
+    @get:OutputDirectory
+    abstract val output : DirectoryProperty
+
+    @get:InputFile
+    abstract val executable : RegularFileProperty
+
+    @get:InputFiles
+    abstract val modulePath : ConfigurableFileCollection
+
+    @get:Input
+    abstract val modules : ListProperty<String>
+
+    @get:Input
+    abstract val options : ListProperty<String>
+
+    init {
+        group = "distribution"
+        description = "assembles a modular runtime image using jlink"
+
+        output.convention(project.layout.buildDirectory.dir("dist/jre"))
+        modules.convention(listOf("ALL-MODULE-PATH"))
+
+        if (project.pluginManager.hasPlugin("java")) {
+            val feature = JavaPluginHelper.getJavaComponent(project).mainFeature
+            modulePath.from(feature.runtimeClasspathConfiguration)
+            modulePath.from(feature.jarTask)
+
+            val toolchains = project.extensions.getByType(JavaToolchainService::class)
+            val java = project.extensions.getByType(JavaPluginExtension::class)
+
+            executable.convention(toolchains.launcherFor(java.toolchain)
+                    .map { it.metadata.installationPath }
+                    .map { it.dir("bin").file("jlink") })
+        }
+    }
+
+    @TaskAction
+    fun execute() {
+        val args = options.get() + listOf(
+                "--module-path", modulePath.asPath,
+                "--output", output.get().asFile.path,
+                "--add-modules", modules.get().joinToString(",")
+        )
+        val executable = executable.get().asFile.path
+
+        project.delete(output)
+        project.exec {
+            this.executable = executable
+            this.args = args
+        }
+    }
+}

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-rc-4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

server/build.gradle.kts

@@ -1,12 +1,16 @@
+import eu.jonahbauer.chat.build.jlink.JLinkTask
+
 plugins {
     id("chat-bot.java-conventions")
-    application
 }
 
 group = "eu.jonahbauer.chat"
 version = "0.1.0-SNAPSHOT"
 
-val bots = project(":bots").subprojects
+val bot : Configuration by configurations.creating
+configurations.runtimeOnly {
+    extendsFrom(bot)
+}
 
 dependencies {
     implementation(project(":bot-api"))
@@ -16,13 +20,27 @@ dependencies {
 
     runtimeOnly(libs.logback)
 
-    bots.forEach {
+    project.project(":bots").subprojects.forEach {
-        implementation(project(it.path))
+        bot(project(it.path))
     }
 }
 
-application {
+tasks.named<JavaCompile>("compileJava") {
-    mainClass.set("eu.jonahbauer.chat.server.Main")
+    options.javaModuleMainClass = "eu.jonahbauer.chat.server.Main"
-    mainModule.set("eu.jonahbauer.chat.server")
-    applicationDefaultJvmArgs = listOf("--enable-preview")
 }
+
+tasks.register<JLinkTask>("jlink") {
+    modules = listOf("ALL-MODULE-PATH", "jdk.crypto.ec")
+    options = listOf("--no-header-files", "--no-man-pages", "--strip-debug", "--compress=zip-6")
+}
+
+tasks.register<Exec>("run") {
+    group = "application"
+    description = "runs the application using the custom runtime image"
+
+    executable = project.layout.buildDirectory.file("dist/jre/bin/java").get().asFile.path
+    args("--enable-preview", "-m", "eu.jonahbauer.chat.server")
+
+    dependsOn(tasks.named<JLinkTask>("jlink"))
+}
+