GradleProjectUtils.java

/*
 *    This file is part of ReadonlyREST.
 *
 *    ReadonlyREST is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    ReadonlyREST is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with ReadonlyREST.  If not, see http://www.gnu.org/licenses/
 */
package org.elasticsearch.plugin.readonlyrest.utils.gradle;

import org.gradle.tooling.GradleConnector;
import org.gradle.tooling.ProjectConnection;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;

public class GradleProjectUtils {
  private static final GradleProperties properties = GradleProperties.create().get();

  public static Optional<File> assemble() {
    runTask(":assemble");
    File plugin = new File(getProjectDir().toFile(), "build/distributions/" + pluginName());
    if (!plugin.exists()) return Optional.empty();
    return Optional.of(plugin);
  }

  public static Path getProjectDir() {
    String projectDir = System.getProperty("project.dir");
    return projectDir != null ? Paths.get(projectDir) : new File(".").toPath();
  }

  private static String pluginName() {
    return String.format(
        "%s-%s_es%s.zip",
        properties.getProperty("pluginName"),
        properties.getProperty("pluginVersion"),
        properties.getProperty("esVersion")
    );
  }

  private static void runTask(String task) {
    GradleConnector connector = GradleConnector.newConnector().forProjectDirectory(getProjectDir().toFile());

    ProjectConnection connect = null;
    try {
      connect = connector.connect();
      connect.newBuild().forTasks(task).run();
    } finally {
      if (connect != null) connect.close();
    }
  }
}