core-it-support/core-it-plugins/maven-it-plugin-settings/src/main/java/org/apache/maven/plugin/coreit/SettingsReadItMojo.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.settings.Settings;
import org.apache.maven.settings.io.xpp3.SettingsXpp3Writer;

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

/**
 * Goal which read settings and dump it to a file
 *
 * @goal settings-read
 * @phase validate
 */
public class SettingsReadItMojo
    extends AbstractMojo
{
    /**
     * @parameter default-value="${settings}"
     * @required
     * @readonly
     */
    private Settings settings;

    /**
     * @parameter default-value="target/settings-dump.xml"
     * @required
     */
    private File dumpFile;

    public void execute()
        throws MojoExecutionException
    {
        if ( dumpFile.exists() )
        {
            dumpFile.delete();
        }
        dumpFile.getParentFile().mkdirs();
        try ( FileWriter fw = new FileWriter( dumpFile ) )
        {
            SettingsXpp3Writer writer = new SettingsXpp3Writer();
            writer.write( fw, settings );
        }
        catch ( IOException e )
        {
            throw new MojoExecutionException( e.getMessage(), e );
        }
    }


}