Deploy JavaDoc with Antora

Closes gh-2243

docs/antora.yml

@@ -6,7 +6,7 @@ nav:
 ext:
   collector:
     run:
-      command: gradlew -q -PbuildSrc.skipTests=true "-Dorg.gradle.jvmargs=-Xmx3g -XX:+HeapDumpOnOutOfMemoryError" :spring-authorization-server-docs:generateAntoraYml
+      command: gradlew -q -PbuildSrc.skipTests=true "-Dorg.gradle.jvmargs=-Xmx3g -XX:+HeapDumpOnOutOfMemoryError" :spring-authorization-server-docs:generateAntoraResources
       local: true
     scan:
       dir: ./build/generated-antora-resources

docs/modules/ROOT/nav.adoc

@@ -1,6 +1,7 @@
 * xref:overview.adoc[]
 * xref:getting-help.adoc[]
 * xref:getting-started.adoc[]
+* xref:attachment$api/java/index.html[Javadoc]
 * xref:configuration-model.adoc[]
 * xref:core-model-components.adoc[]
 * xref:protocol-endpoints.adoc[]

docs/spring-authorization-server-docs.gradle

@@ -24,10 +24,20 @@ antora {
 	]
 }
 
+tasks.register("syncAntoraAttachments", Sync) {
+	group = 'Documentation'
+	description = 'Syncs the Antora attachments'
+	from project.provider( { project.tasks.api.outputs } )
+	into project.layout.buildDirectory.dir('generated-antora-resources/modules/ROOT/assets/attachments/api/java')
+}
+
 tasks.named("generateAntoraYml") {
 	asciidocAttributes = project.provider( { generateAttributes() } )
 }
 
+tasks.register("generateAntoraResources") {
+	dependsOn 'generateAntoraYml', 'syncAntoraAttachments'
+}
 
 def generateAttributes() {
 	return [