Move common Asciidoctor configuration into our conventions

Closes gh-26620

buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java

@@ -46,8 +46,15 @@ import org.springframework.util.StringUtils;
  * the plugin is applied:
  *
  * <ul>
+ * <li>The {@code https://repo.spring.io/release} Maven repository is configured and
+ * limited to dependencies in the following groups:
+ * <ul>
+ * <li>{@code io.spring.asciidoctor}
+ * <li>{@code io.spring.docresources}
+ * </ul>
  * <li>All warnings are made fatal.
  * <li>The version of AsciidoctorJ is upgraded to 2.4.1.
+ * <li>An {@code asciidoctorExtensions} configuration is created.
  * <li>A task is created to resolve and unzip our documentation resources (CSS and
  * Javascript).
  * <li>For each {@link AsciidoctorTask} (HTML only):
@@ -64,6 +71,7 @@ import org.springframework.util.StringUtils;
  * the current version, etc.
  * <li>{@link AbstractAsciidoctorTask#baseDirFollowsSourceDir() baseDirFollowsSourceDir()}
  * is enabled.
+ * <li>{@code asciidoctorExtensions} is added to the task's configurations.
  * </ul>
  * </ul>
  *
@@ -73,16 +81,20 @@ class AsciidoctorConventions {
 
 	private static final String ASCIIDOCTORJ_VERSION = "2.4.1";
 
+	private static final String EXTENSIONS_CONFIGURATION_NAME = "asciidoctorExtensions";
+
 	void apply(Project project) {
 		project.getPlugins().withType(AsciidoctorJPlugin.class, (asciidoctorPlugin) -> {
-			configureDocResourcesRepository(project);
+			configureDocumentationDependenciesRepository(project);
 			makeAllWarningsFatal(project);
 			upgradeAsciidoctorJVersion(project);
+			Configuration asciidoctorExtensions = createAsciidoctorExtensionsConfiguration(project);
 			UnzipDocumentationResources unzipResources = createUnzipDocumentationResourcesTask(project);
 			project.getTasks().withType(AbstractAsciidoctorTask.class, (asciidoctorTask) -> {
 				configureCommonAttributes(project, asciidoctorTask);
 				configureOptions(asciidoctorTask);
 				asciidoctorTask.baseDirFollowsSourceDir();
+				asciidoctorTask.configurations(asciidoctorExtensions);
 				Sync syncSource = createSyncDocumentationSourceTask(project, asciidoctorTask);
 				if (asciidoctorTask instanceof AsciidoctorTask) {
 					configureHtmlOnlyAttributes(asciidoctorTask);
@@ -104,10 +116,13 @@ class AsciidoctorConventions {
 		});
 	}
 
-	private void configureDocResourcesRepository(Project project) {
+	private void configureDocumentationDependenciesRepository(Project project) {
 		project.getRepositories().maven((mavenRepo) -> {
 			mavenRepo.setUrl(URI.create("https://repo.spring.io/release"));
-			mavenRepo.mavenContent((mavenContent) -> mavenContent.includeGroup("io.spring.docresources"));
+			mavenRepo.mavenContent((mavenContent) -> {
+				mavenContent.includeGroup("io.spring.asciidoctor");
+				mavenContent.includeGroup("io.spring.docresources");
+			});
 		});
 	}
 
@@ -119,6 +134,13 @@ class AsciidoctorConventions {
 		project.getExtensions().getByType(AsciidoctorJExtension.class).setVersion(ASCIIDOCTORJ_VERSION);
 	}
 
+	private Configuration createAsciidoctorExtensionsConfiguration(Project project) {
+		return project.getConfigurations().create(EXTENSIONS_CONFIGURATION_NAME,
+				(configuration) -> project.getConfigurations()
+						.matching((candidate) -> "dependencyManagement".equals(candidate.getName()))
+						.all((dependencyManagement) -> configuration.extendsFrom(dependencyManagement)));
+	}
+
 	private UnzipDocumentationResources createUnzipDocumentationResourcesTask(Project project) {
 		Configuration documentationResources = project.getConfigurations().maybeCreate("documentationResources");
 		documentationResources.getDependencies()

spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle

@@ -11,9 +11,6 @@ plugins {
 description = "Spring Boot Actuator AutoConfigure"
 
 configurations {
-	asciidoctorExtensions {
-		extendsFrom dependencyManagement
-	}
 	documentation
 }
 
@@ -158,7 +155,6 @@ task dependencyVersions(type: org.springframework.boot.build.constraints.Extract
 
 tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 	dependsOn dependencyVersions
-	baseDirFollowsSourceDir()
 	doFirst {
 		def versionConstraints = dependencyVersions.versionConstraints
 		def integrationVersion = versionConstraints["org.springframework.integration:spring-integration-core"]
@@ -170,14 +166,12 @@ tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 }
 
 asciidoctor {
-	configurations "asciidoctorExtensions"
 	sources {
 		include "index.adoc"
 	}
 }
 
 asciidoctorPdf {
-	configurations "asciidoctorExtensions"
 	sources {
 		include "index.adoc"
 	}

spring-boot-project/spring-boot-docs/build.gradle

@@ -10,9 +10,6 @@ description = "Spring Boot Docs"
 
 configurations {
 	actuatorApiDocumentation
-	asciidoctorExtensions {
-		extendsFrom dependencyManagement
-	}
 	autoConfiguration
 	configurationProperties
 	gradlePluginDocumentation
@@ -20,15 +17,6 @@ configurations {
 	testSlices
 }
 
-repositories {
-	maven {
-		url "https://repo.spring.io/release"
-		mavenContent {
-			includeGroup "io.spring.asciidoctor"
-		}
-	}
-}
-
 jar {
 	enabled = false
 }
@@ -187,8 +175,6 @@ task documentConfigurationProperties(type: org.springframework.boot.build.contex
 
 tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 	dependsOn dependencyVersions
-	configurations "asciidoctorExtensions"
-	baseDirFollowsSourceDir()
 	asciidoctorj {
 		fatalWarnings = ['^((?!successfully validated).)*$']
 	}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/build.gradle

@@ -15,21 +15,9 @@ toolchain {
 }
 
 configurations {
-	asciidoctorExtensions {
-		extendsFrom dependencyManagement
-	}
 	documentation
 }
 
-repositories {
-	maven {
-		url "https://repo.spring.io/release"
-		mavenContent {
-			includeGroup "io.spring.asciidoctor"
-		}
-	}
-}
-
 dependencies {
 	asciidoctorExtensions("io.spring.asciidoctor:spring-asciidoctor-extensions-block-switch")
 
@@ -85,7 +73,6 @@ tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 }
 
 asciidoctor {
-	configurations "asciidoctorExtensions"
 	sources {
 		include "index.adoc"
 	}