Configure Gradle's processResources to include the SBOM

This also configures the BootWar task to add the SBOM location to the
manifest.

Closes gh-40890

Author: mhalbritter

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/CycloneDxPluginAction.java

@@ -21,9 +21,17 @@
 import org.gradle.api.Action;
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
+import org.gradle.api.Task;
+import org.gradle.api.plugins.JavaPlugin;
+import org.gradle.api.plugins.JavaPluginExtension;
+import org.gradle.api.provider.Provider;
+import org.gradle.api.tasks.Copy;
+import org.gradle.api.tasks.SourceSet;
 import org.gradle.api.tasks.TaskProvider;
+import org.gradle.api.tasks.bundling.Jar;
 
 import org.springframework.boot.gradle.tasks.bundling.BootJar;
+import org.springframework.boot.gradle.tasks.bundling.BootWar;
 
 /**
  * {@link Action} that is executed in response to the {@link CycloneDxPlugin} being
@@ -40,24 +48,69 @@ public Class<? extends Plugin<? extends Project>> getPluginClass() {
 
 	@Override
 	public void execute(Project project) {
-		TaskProvider<CycloneDxTask> cyclonedxBom = project.getTasks().named("cyclonedxBom", CycloneDxTask.class);
-		cyclonedxBom.configure((task) -> {
+		TaskProvider<CycloneDxTask> cycloneDxTaskProvider = project.getTasks()
+			.named("cyclonedxBom", CycloneDxTask.class);
+		configureCycloneDxTask(cycloneDxTaskProvider);
+		configureJavaPlugin(project, cycloneDxTaskProvider);
+		configureSpringBootPlugin(project, cycloneDxTaskProvider);
+	}
+
+	private void configureCycloneDxTask(TaskProvider<CycloneDxTask> taskProvider) {
+		taskProvider.configure((task) -> {
 			task.getProjectType().convention("application");
 			task.getOutputFormat().convention("json");
 			task.getOutputName().convention("application.cdx");
 			task.getIncludeLicenseText().convention(false);
 		});
-		project.getTasks().named(SpringBootPlugin.BOOT_JAR_TASK_NAME, BootJar.class).configure((bootJar) -> {
-			CycloneDxTask cycloneDxTask = cyclonedxBom.get();
-			String sbomFileName = cycloneDxTask.getOutputName().get() + getSbomExtension(cycloneDxTask);
-			bootJar.from(cycloneDxTask, (spec) -> spec.include(sbomFileName).into("META-INF/sbom"));
-			bootJar.manifest((manifest) -> {
-				manifest.getAttributes().put("Sbom-Format", "CycloneDX");
-				manifest.getAttributes().put("Sbom-Location", "META-INF/sbom/" + sbomFileName);
+	}
+
+	private void configureJavaPlugin(Project project, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configurePlugin(project, JavaPlugin.class, (javaPlugin) -> {
+			JavaPluginExtension javaPluginExtension = project.getExtensions().getByType(JavaPluginExtension.class);
+			SourceSet main = javaPluginExtension.getSourceSets().getByName(SourceSet.MAIN_SOURCE_SET_NAME);
+			configureTask(project, main.getProcessResourcesTaskName(), Copy.class, (copy) -> {
+				copy.dependsOn(cycloneDxTaskProvider);
+				Provider<String> sbomFileName = cycloneDxTaskProvider
+					.map((cycloneDxTask) -> cycloneDxTask.getOutputName().get() + getSbomExtension(cycloneDxTask));
+				copy.from(cycloneDxTaskProvider, (spec) -> spec.include(sbomFileName.get()).into("META-INF/sbom"));
 			});
 		});
 	}
 
+	private void configureSpringBootPlugin(Project project, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configurePlugin(project, SpringBootPlugin.class, (springBootPlugin) -> {
+			configureBootJarTask(project, cycloneDxTaskProvider);
+			configureBootWarTask(project, cycloneDxTaskProvider);
+		});
+	}
+
+	private void configureBootJarTask(Project project, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configureTask(project, SpringBootPlugin.BOOT_JAR_TASK_NAME, BootJar.class,
+				(bootJar) -> configureBootJarTask(bootJar, cycloneDxTaskProvider));
+	}
+
+	private void configureBootWarTask(Project project, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configureTask(project, SpringBootPlugin.BOOT_WAR_TASK_NAME, BootWar.class,
+				(bootWar) -> configureBootWarTask(bootWar, cycloneDxTaskProvider));
+	}
+
+	private void configureBootJarTask(BootJar task, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configureJarTask(task, cycloneDxTaskProvider);
+	}
+
+	private void configureBootWarTask(BootWar task, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		configureJarTask(task, cycloneDxTaskProvider);
+	}
+
+	private void configureJarTask(Jar task, TaskProvider<CycloneDxTask> cycloneDxTaskProvider) {
+		Provider<String> sbomFileName = cycloneDxTaskProvider.map((cycloneDxTask) -> "META-INF/sbom/"
+				+ cycloneDxTask.getOutputName().get() + getSbomExtension(cycloneDxTask));
+		task.manifest((manifest) -> {
+			manifest.getAttributes().put("Sbom-Format", "CycloneDX");
+			manifest.getAttributes().put("Sbom-Location", sbomFileName);
+		});
+	}
+
 	private String getSbomExtension(CycloneDxTask task) {
 		String format = task.getOutputFormat().get();
 		if ("all".equals(format)) {
@@ -66,4 +119,16 @@ private String getSbomExtension(CycloneDxTask task) {
 		return "." + format;
 	}
 
+	private <T extends Task> void configureTask(Project project, String name, Class<T> type, Action<T> action) {
+		project.getTasks().withType(type).configureEach((task) -> {
+			if (task.getName().equals(name)) {
+				action.execute(task);
+			}
+		});
+	}
+
+	private <T extends Plugin<?>> void configurePlugin(Project project, Class<T> plugin, Action<T> action) {
+		project.getPlugins().withType(plugin, action);
+	}
+
 }