GradleProvisioner.java

/*
 * Copyright 2016 DiffPlug
 *
 * Licensed 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 com.diffplug.gradle.spotless;

import java.util.Objects;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.gradle.api.Project;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.artifacts.Dependency;

import com.diffplug.spotless.Provisioner;

/** Gradle integration for Provisioner. */
public class GradleProvisioner {
	private GradleProvisioner() {}

	public static Provisioner fromProject(Project project) {
		Objects.requireNonNull(project);
		return mavenCoords -> {
			try {
				Dependency[] deps = mavenCoords.stream()
						.map(project.getBuildscript().getDependencies()::create)
						.toArray(Dependency[]::new);
				Configuration config = project.getBuildscript().getConfigurations().detachedConfiguration(deps);
				config.setDescription(mavenCoords.toString());
				return config.resolve();
			} catch (Exception e) {
				logger.log(Level.SEVERE, "You probably need to add a repository containing the '" + mavenCoords + "' artifact, e.g.: 'buildscript { repositories { mavenCentral() }}'", e);
				throw e;
			}
		};
	}

	private static final Logger logger = Logger.getLogger(GradleProvisioner.class.getName());
}