de.akquinet.innovation.play.maven.AbstractPlay2Mojo Maven / Gradle / Ivy

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A Maven Plugin to build Play2 Application

There is a newer version: 1.2.1

/*
 * Copyright 2012 akquinet
 * 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 de.akquinet.innovation.play.maven;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.MavenProjectHelper;

import java.io.File;

/**
 * Common parent of all Play 2 Mojo
 */
public abstract class AbstractPlay2Mojo extends AbstractMojo {

    /**
     * The maven project.
     *
     * @parameter expression="${project}"
     * @required
     * @readonly
     */
    MavenProject project;

    /**
     * The maven session.
     *
     * @parameter expression="${session}"
     * @required
     * @readonly
     */
    MavenSession session;

    /**
     * Maven ProjectHelper.
     *
     * @component
     * @readonly
     */
    MavenProjectHelper projectHelper;


    public static final String ENV_PLAY2_HOME = "PLAY2_HOME";

    public String getPlay2HomeOrThrow() throws MojoExecutionException {
        // First check, system variable        
        String home = System.getProperty(ENV_PLAY2_HOME); 
        if (home != null  && home.length() != 0) {
            return home;
        }

        // Second check, environment variable
        home = System.getenv(ENV_PLAY2_HOME);
        if (home != null  && home.length() != 0) {
            return home;
        }

        throw new MojoExecutionException(ENV_PLAY2_HOME + " system variable not set");

    }
    
    public File getPlay2() throws MojoExecutionException {
        String path = getPlay2HomeOrThrow();
        File play2 = new File(path, "play");
        if (! play2.exists()) {
            play2 = new File(path, "play.bat");
        }
        if (! play2.exists()) {
            throw new MojoExecutionException("Can't find the play executable in " + path);
        }
        return play2;
    }

}