Include sources and javadoc artifacts while publishing to a Maven repository (#1049) (#1162)

This change fixes the issue where the sources and javadoc artifacts were not built and included with the publish.

Signed-off-by: Rabi Panda <[email protected]>

Author: adnapibar

buildSrc/src/main/java/org/opensearch/gradle/PublishPlugin.java

@@ -121,13 +121,19 @@ public String call() throws Exception {
             });
         });
 
-        // Add git origin info to generated POM files
         publishing.getPublications().withType(MavenPublication.class, publication -> {
+            // Add git origin info to generated POM files
             publication.getPom().withXml(PublishPlugin::addScmInfo);
 
             // have to defer this until archivesBaseName is set
             project.afterEvaluate(p -> publication.setArtifactId(getArchivesBaseName(project)));
 
+            // publish sources and javadoc for Java projects.
+            if (project.getPluginManager().hasPlugin("opensearch.java")) {
+                publication.artifact(project.getTasks().getByName("sourcesJar"));
+                publication.artifact(project.getTasks().getByName("javadocJar"));
+            }
+
             generatePomTask.configure(
                 t -> t.dependsOn(String.format("generatePomFileFor%sPublication", Util.capitalize(publication.getName())))
             );