core-it-support/core-it-plugins/maven-it-plugin-fork/src/main/java/org/apache/maven/plugin/coreit/ForkLifecycleMojo.java

package org.apache.maven.plugin.coreit;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.
 */

import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;

import java.io.File;

/**
 * @goal fork
 *
 * @execute phase="generate-sources" lifecycle="foo"
 */
public class ForkLifecycleMojo
    extends AbstractMojo
{
    /**
     * @parameter default-value="${project}"
     */
    private MavenProject project;

    /**
     * @parameter default-value="${executedProject}"
     */
    private MavenProject executedProject;

    /**
     * @parameter default-value="${project.build.directory}"
     */
    private File touchDirectory;

    public void execute()
        throws MojoExecutionException
    {
        TouchMojo.touch( touchDirectory, "fork-lifecycle.txt" );

        if ( !executedProject.getBuild().getFinalName().equals( TouchMojo.FINAL_NAME ) )
        {
            throw new MojoExecutionException( "Unexpected result, final name of executed project is "
                + executedProject.getBuild().getFinalName() + " (should be \'" + TouchMojo.FINAL_NAME + "\')." );
        }

        if ( project.getBuild().getFinalName().equals( TouchMojo.FINAL_NAME ) )
        {
            throw new MojoExecutionException( "forked project was polluted. (should NOT be \'" + TouchMojo.FINAL_NAME
                + "\')." );
        }
    }
}