org.codehaus.mojo.properties.SetSystemPropertiesMojo Maven / Gradle / Ivy

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The Yaml Properties Maven Plugin is here to make life a little easier when dealing with properties. It provides goals to read and write properties from files.

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package org.codehaus.mojo.properties;

/*
 * 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.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;

import java.util.Enumeration;
import java.util.Properties;

/**
 * Sets system properties.
 *
 * @author Mark Hobson
 * @version $Id$
 */
@Mojo(name = "set-system-properties", defaultPhase = LifecyclePhase.INITIALIZE, threadSafe = true)
public class SetSystemPropertiesMojo
        extends AbstractMojo {
    // fields -----------------------------------------------------------------

    /**
     * The system properties to set.
     */
    @Parameter(required = true)
    private Properties properties;

    // Mojo methods -----------------------------------------------------------

    /**
     * {@inheritDoc}
     */
    public void execute()
            throws MojoExecutionException, MojoFailureException {
        if (properties.isEmpty()) {
            getLog().debug("No system properties found");

            return;
        }

        getLog().debug("Setting system properties:");

        for (Enumeration propertyNames = properties.propertyNames(); propertyNames.hasMoreElements(); ) {
            String propertyName = propertyNames.nextElement().toString();
            String propertyValue = properties.getProperty(propertyName);

            getLog().debug("- " + propertyName + " = " + propertyValue);

            System.setProperty(propertyName, propertyValue);
        }

        int count = properties.size();

        getLog().info("Set " + count + " system " + (count > 1 ? "properties" : "property"));
    }
}