From 854dcb76e4a753cc61271e2c5f33145d1f113eab Mon Sep 17 00:00:00 2001
From: Dependency Admin <personbruker@nav.no>
Date: Mon, 6 Jan 2025 14:35:54 +0000
Subject: [PATCH] Setter opp jar-bundling gradle plugin

---
 buildSrc/build.gradle.kts               | 16 ++++++
 buildSrc/src/main/kotlin/jarBundling.kt | 72 +++++++++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 buildSrc/src/main/kotlin/jarBundling.kt

diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index cbcc24a..380b8d8 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -1,5 +1,6 @@
 plugins {
     `kotlin-dsl`
+    `maven-publish`
 }
 
 repositories {
@@ -11,3 +12,18 @@ kotlin {
         languageVersion.set(JavaLanguageVersion.of(17))
     }
 }
+
+gradlePlugin {
+    plugins {
+        create("jar-bundling") {
+            id = "no.nav.tms.jar-bundling"
+            implementationClass = "JarBundling"
+        }
+    }
+}
+
+publishing {
+    repositories {
+        mavenLocal()
+    }
+}
diff --git a/buildSrc/src/main/kotlin/jarBundling.kt b/buildSrc/src/main/kotlin/jarBundling.kt
new file mode 100644
index 0000000..0dc80e1
--- /dev/null
+++ b/buildSrc/src/main/kotlin/jarBundling.kt
@@ -0,0 +1,72 @@
+import org.gradle.api.DefaultTask
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.plugins.JavaApplication
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.TaskAction
+import org.gradle.jvm.tasks.Jar
+import java.io.File
+
+// Managed by tms-dependency-admin.
+
+abstract class JarBundling : Plugin<Project> {
+
+    override fun apply(target: Project) {
+
+        val configureTask = target.tasks.register("configureJar", ConfigureJarTask::class.java) {
+            this.application = target
+
+            val classes = target.tasks.named("classes")
+
+            dependsOn(classes)
+        }
+
+        val packageTask = target.tasks.register("packageJar", BundleJarsTask::class.java) {
+            this.application = target
+        }
+
+        target.tasks.withType(Jar::class.java) {
+            dependsOn(configureTask)
+            finalizedBy(packageTask)
+        }
+    }
+}
+
+abstract class ConfigureJarTask : DefaultTask() {
+    @Input
+    lateinit var application: Project
+
+    @TaskAction
+    fun action() {
+        application.tasks.withType(Jar::class.java) {
+
+            val javaApplication = application.extensions.getByType(JavaApplication::class.java)
+
+            val mainClassName = javaApplication.mainClass
+
+            archiveBaseName.set("app")
+            manifest {
+                val classpath = application.configurations.getByName("runtimeClasspath")
+                attributes["Main-Class"] = mainClassName
+                attributes["Class-Path"] = classpath.joinToString(separator = " ") {
+                    it.name
+                }
+            }
+        }
+    }
+}
+
+abstract class BundleJarsTask : DefaultTask() {
+    @Input
+    lateinit var application: Project
+
+    @TaskAction
+    fun action() {
+        val classpath = application.configurations.getByName("runtimeClasspath")
+
+        classpath.forEach {
+            val file = File("${application.layout.buildDirectory.get()}/libs/${it.name}")
+            if (!file.exists()) it.copyTo(file)
+        }
+    }
+}