GenericDaemonGenerator

/**
 * The MIT License
 *
 * Copyright 2006-2012 The Codehaus.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.codehaus.mojo.appassembler.daemon.generic;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.project.MavenProject;
import org.codehaus.mojo.appassembler.daemon.DaemonGenerationRequest;
import org.codehaus.mojo.appassembler.daemon.DaemonGenerator;
import org.codehaus.mojo.appassembler.daemon.DaemonGeneratorException;
import org.codehaus.mojo.appassembler.daemon.merge.DaemonMerger;
import org.codehaus.mojo.appassembler.model.Classpath;
import org.codehaus.mojo.appassembler.model.Daemon;
import org.codehaus.mojo.appassembler.model.Dependency;
import org.codehaus.mojo.appassembler.model.io.stax.AppassemblerModelStaxWriter;
import org.codehaus.plexus.logging.AbstractLogEnabled;
import org.codehaus.plexus.util.FileUtils;
import org.codehaus.plexus.util.IOUtil;

import javax.xml.stream.XMLStreamException;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Iterator;

/**
 * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
 * @version $Id: GenericDaemonGenerator.java 16492 2012-04-29 18:26:21Z khmarbaise $
 * @plexus.component role-hint="generic"
 */
public class GenericDaemonGenerator extends AbstractLogEnabled implements DaemonGenerator
{
    /**
     * @plexus.requirement
     */
    private DaemonMerger daemonMerger;

    // -----------------------------------------------------------------------
    // DaemonGenerator Implementation
    // -----------------------------------------------------------------------

    /*
     * (non-Javadoc)
     * @see org.codehaus.mojo.appassembler.daemon.DaemonGenerator#generate(org.codehaus.mojo.appassembler.daemon.
     * DaemonGenerationRequest)
     */
    public void generate ( DaemonGenerationRequest request ) throws DaemonGeneratorException
    {
        // -----------------------------------------------------------------------
        // Create the daemon from the Maven project
        // -----------------------------------------------------------------------

        Daemon createdDaemon = createDaemon ( request.getMavenProject ( ), request.getRepositoryLayout ( ) );

        // -----------------------------------------------------------------------
        // Merge the given stub daemon and the generated
        // -----------------------------------------------------------------------

        Daemon mergedDaemon = daemonMerger.mergeDaemons ( request.getDaemon ( ), createdDaemon );

        // -----------------------------------------------------------------------
        // Write out the project
        // -----------------------------------------------------------------------

        OutputStreamWriter writer = null;

        try
        {

            FileUtils.forceMkdir ( request.getOutputDirectory ( ) );

            File outputFile = new File ( request.getOutputDirectory ( ), mergedDaemon.getId ( ) + ".xml" );

            FileOutputStream fos = new FileOutputStream ( outputFile );

            writer = new OutputStreamWriter ( fos, "UTF-8" );

            AppassemblerModelStaxWriter staxWriter = new AppassemblerModelStaxWriter ( );
            staxWriter.write ( writer, mergedDaemon );
        }
        catch ( IOException e )
        {
            throw new DaemonGeneratorException (
                    "Error while writing output file: " + request.getOutputDirectory ( ), e );
        }
        catch ( XMLStreamException e )
        {
            throw new DaemonGeneratorException (
                    "Error while writing output file: " + request.getOutputDirectory ( ), e );
        }
        finally
        {
            IOUtil.close ( writer );
        }
    }

    // -----------------------------------------------------------------------
    // Private
    // -----------------------------------------------------------------------

    private Daemon createDaemon ( MavenProject project, ArtifactRepositoryLayout layout )
    {
        Daemon complete = new Daemon ( );

        complete.setClasspath ( new Classpath ( ) );

        // -----------------------------------------------------------------------
        // Add the project itself as a dependency.
        // -----------------------------------------------------------------------
        Dependency projectDependency = new Dependency ( );
        Artifact projectArtifact = project.getArtifact ( );
        projectArtifact.isSnapshot ( );
        projectDependency.setGroupId ( projectArtifact.getGroupId ( ) );
        projectDependency.setArtifactId ( projectArtifact.getArtifactId ( ) );
        projectDependency.setVersion ( projectArtifact.getVersion ( ) );
        projectDependency.setClassifier ( projectArtifact.getClassifier ( ) );
        projectDependency.setRelativePath ( layout.pathOf ( projectArtifact ) );
        complete.getClasspath ( ).addDependency ( projectDependency );

        // -----------------------------------------------------------------------
        // Add all the dependencies of the project.
        // -----------------------------------------------------------------------
        for ( Iterator it = project.getRuntimeArtifacts ( ).iterator ( ); it.hasNext ( ); )
        {
            Artifact artifact = ( Artifact ) it.next ( );

            artifact.isSnapshot ( );

            Dependency dependency = new Dependency ( );
            dependency.setGroupId ( artifact.getGroupId ( ) );
            dependency.setArtifactId ( artifact.getArtifactId ( ) );
            dependency.setVersion ( artifact.getVersion ( ) );

            dependency.setClassifier ( artifact.getClassifier ( ) );
            dependency.setRelativePath ( layout.pathOf ( artifact ) );

            complete.getClasspath ( ).addDependency ( dependency );
        }

        return complete;
    }
}