Split dependenciesInfo task to its own plugin (#56957)

The dependenciesInfo task is used to gather information about all
dependencies in elasticsearch. This commit separates it into its own
gradle plugin.

buildSrc/src/main/groovy/org/elasticsearch/gradle/BuildPlugin.groovy

@@ -18,16 +18,11 @@
  */
 package org.elasticsearch.gradle
 
-import com.github.jengelman.gradle.plugins.shadow.ShadowBasePlugin
+
-import com.github.jengelman.gradle.plugins.shadow.ShadowExtension
-import com.github.jengelman.gradle.plugins.shadow.ShadowJavaPlugin
-import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import groovy.transform.CompileStatic
-import nebula.plugin.info.InfoBrokerPlugin
 import org.apache.commons.io.IOUtils
 import org.elasticsearch.gradle.info.BuildParams
 import org.elasticsearch.gradle.info.GlobalBuildInfoPlugin
-import org.elasticsearch.gradle.plugin.PluginBuildPlugin
 import org.elasticsearch.gradle.precommit.DependencyLicensesTask
 import org.elasticsearch.gradle.precommit.PrecommitTasks
 import org.elasticsearch.gradle.test.ErrorReportingTestListener
@@ -43,7 +38,6 @@ import org.gradle.api.NamedDomainObjectContainer
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.Task
-import org.gradle.api.XmlProvider
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.artifacts.Dependency
 import org.gradle.api.artifacts.ModuleDependency
@@ -55,32 +49,15 @@ import org.gradle.api.artifacts.repositories.IvyPatternRepositoryLayout
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository
 import org.gradle.api.credentials.HttpHeaderCredentials
 import org.gradle.api.execution.TaskActionListener
-import org.gradle.api.file.CopySpec
-import org.gradle.api.plugins.BasePlugin
-import org.gradle.api.plugins.BasePluginConvention
 import org.gradle.api.plugins.ExtraPropertiesExtension
 import org.gradle.api.plugins.JavaPlugin
-import org.gradle.api.publish.PublishingExtension
-import org.gradle.api.publish.maven.MavenPublication
-import org.gradle.api.publish.maven.plugins.MavenPublishPlugin
-import org.gradle.api.publish.maven.tasks.GenerateMavenPom
-import org.gradle.api.tasks.SourceSet
-import org.gradle.api.tasks.SourceSetContainer
 import org.gradle.api.tasks.TaskProvider
-import org.gradle.api.tasks.bundling.Jar
-import org.gradle.api.tasks.compile.JavaCompile
-import org.gradle.api.tasks.javadoc.Javadoc
 import org.gradle.api.tasks.testing.Test
 import org.gradle.authentication.http.HttpHeaderAuthentication
-import org.gradle.external.javadoc.CoreJavadocOptions
-import org.gradle.internal.jvm.Jvm
 import org.gradle.language.base.plugins.LifecycleBasePlugin
 import org.gradle.util.GradleVersion
 
 import java.nio.charset.StandardCharsets
-import java.nio.file.Files
-
-import static org.elasticsearch.gradle.util.GradleUtils.maybeConfigure
 
 /**
  * Encapsulates build configuration for elasticsearch projects.
@@ -112,6 +89,7 @@ class BuildPlugin implements Plugin<Project> {
         }
         project.pluginManager.apply('elasticsearch.java')
         project.pluginManager.apply('elasticsearch.publish')
+        project.pluginManager.apply(DependenciesInfoPlugin)
 
         // apply global test task failure listener
         project.rootProject.pluginManager.apply(TestFailureReportingPlugin)
@@ -121,7 +99,6 @@ class BuildPlugin implements Plugin<Project> {
         configureRepositories(project)
         project.extensions.getByType(ExtraPropertiesExtension).set('versions', VersionProperties.versions)
         configurePrecommit(project)
-        configureDependenciesInfo(project)
         configureFips140(project)
     }
 
@@ -311,16 +288,6 @@ class BuildPlugin implements Plugin<Project> {
         }
     }
 
-    private static configureDependenciesInfo(Project project) {
-        project.tasks.register("dependenciesInfo", DependenciesInfoTask, { DependenciesInfoTask task ->
-            task.runtimeConfiguration = project.configurations.getByName(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME)
-            task.compileOnlyConfiguration = project.configurations.getByName(JavaPlugin.COMPILE_ONLY_CONFIGURATION_NAME)
-            task.getConventionMapping().map('mappings') {
-                (project.tasks.getByName('dependencyLicenses') as DependencyLicensesTask).mappings
-            }
-        } as Action<DependenciesInfoTask>)
-    }
-
     private static class TestFailureReportingPlugin implements Plugin<Project> {
         @Override
         void apply(Project project) {

buildSrc/src/main/groovy/org/elasticsearch/gradle/DependenciesInfoPlugin.groovy

@@ -0,0 +1,41 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.gradle
+
+import org.elasticsearch.gradle.precommit.DependencyLicensesTask
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.plugins.JavaPlugin
+import org.gradle.api.tasks.TaskProvider
+
+class DependenciesInfoPlugin implements Plugin<Project> {
+    @Override
+    public void apply(Project project) {
+        TaskProvider<DependenciesInfoTask> depsInfo = project.getTasks().register("dependenciesInfo", DependenciesInfoTask.class);
+        depsInfo.configure { DependenciesInfoTask t ->
+            t.setRuntimeConfiguration(project.getConfigurations().getByName(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME));
+            t.setCompileOnlyConfiguration(project.getConfigurations().getByName(JavaPlugin.COMPILE_ONLY_CONFIGURATION_NAME));
+            t.getConventionMapping().map("mappings") { ->
+                TaskProvider<DependencyLicensesTask> depLic = project.getTasks().named("dependencyLicenses", DependencyLicensesTask.class);
+                return depLic.get().getMappings();
+            }
+        };
+    }
+}