com.marvelution.maven.components.migration.manager.phases.rollback.DeleteGeneratedPomPhase Maven / Gradle / Ivy

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Maven 2.x Plexus Migration Manager Component used by the maven-migrator-plugin

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/*
 * Licensed to Marvelution under one or more contributor license 
 * agreements.  See the NOTICE file distributed with this work 
 * for additional information regarding copyright ownership.
 * Marvelution 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 com.marvelution.maven.components.migration.manager.phases.rollback;

import java.io.File;
import java.io.IOException;

import org.codehaus.plexus.util.FileUtils;

import com.marvelution.maven.components.migration.manager.MigrationResult;
import com.marvelution.maven.components.migration.manager.configuration.MigrationDescriptor;
import com.marvelution.maven.components.migration.manager.environment.MigrationEnvironment;
import com.marvelution.maven.components.migration.manager.exception.MigrationExecutionException;
import com.marvelution.maven.components.migration.manager.exception.MigrationFailureException;
import com.marvelution.maven.components.migration.manager.phases.AbstractMigrationPhase;
import com.marvelution.utils.maven.model.ModelUtils;

/**
 * {@link MigrationPhase} to delete the the generated POM
 * 
 * @author Mark Rekveld
 */
public class DeleteGeneratedPomPhase extends AbstractMigrationPhase {

	/**
	 * {@inheritDoc}
	 */
	public MigrationResult execute(final MigrationDescriptor descriptor, final MigrationEnvironment environment)
					throws MigrationExecutionException, MigrationFailureException {
		final MigrationResult result = new MigrationResult();
		final File backup = new File(descriptor.getWorkingDirectory(), ModelUtils.POMV4 + ".migrationBackup");
		final File pomFile = new File(descriptor.getWorkingDirectory(), ModelUtils.POMV4);
		if (backup.exists()) {
			try {
				getLogger().info("Restoring backup pom.xml");
				FileUtils.copyFile(backup, pomFile);
			} catch (IOException e) {
				getLogger().error("Failed to restore orgininal pom.xml from backup", e);
			} finally {
				try {
					FileUtils.forceDelete(backup);
				} catch (IOException e) {
					getLogger().error("Failed to delete backup pom.xml file", e);
				}
			}
		} else {
			try {
				getLogger().info("Deleting generated pom.xml");
				FileUtils.forceDelete(pomFile);
			} catch (IOException e) {
				getLogger().error("Failed to delete generated pom.xml file", e);
			}
		}
		result.setResultCode(MigrationResult.SUCCESS);
		return result;
	}

}