MavenDownloader.java

/*
 * Jabox Open Source Version
 * Copyright (C) 2009-2010 Dimitris Kapanidis                                                                                                                          
 * 
 * This file is part of Jabox
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package org.jabox.maven.helper;

import java.io.File;

import org.jabox.environment.Environment;
import org.jabox.maven.helper.aether.aether.Aether;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonatype.aether.collection.DependencyCollectionException;
import org.sonatype.aether.resolution.ArtifactResolutionException;
import org.sonatype.aether.transfer.ArtifactNotFoundException;

public class MavenDownloader {
    private static final Logger LOGGER = LoggerFactory
        .getLogger(MavenDownloader.class);

    private static final String MAVEN_REPO =
        "http://repo1.maven.org/maven2/";

    private static final String LOCAL_REPO = Environment
        .getCustomMavenHomeDir().getAbsolutePath() + "/repository/";

    /**
     * @param groupId
     * @param artifactId
     * @param version
     * @param extension
     */
    public static File downloadArtifact(final String groupId,
            final String artifactId, final String version,
            final String extension) {
        LOGGER.info("Downloading: " + groupId + ":" + artifactId + ":"
            + version + ":" + extension);
        try {
            return retrieveArtifact(groupId, artifactId, version,
                extension);
        } catch (ArtifactResolutionException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ArtifactNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (DependencyCollectionException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return null;
    }

    public static File getArtifactFile(final String groupId,
            final String artifactId, final String version,
            final String type) {
        String m2Home =
            Environment.getCustomMavenHomeDir().getAbsolutePath();
        assert m2Home != null;
        StringBuffer sb = new StringBuffer(m2Home);
        sb.append(File.separator);
        sb.append("repository");
        sb.append(File.separator);
        sb.append(groupId.replace('.', File.separatorChar));
        sb.append(File.separator);
        sb.append(artifactId);
        sb.append(File.separator);
        sb.append(version);
        sb.append(File.separator);
        sb.append(artifactId);
        sb.append("-");
        sb.append(version);
        sb.append(".");
        sb.append(type);
        File file = new File(sb.toString());
        assert file.exists();
        return file;
    }

    private static File retrieveArtifact(final String groupId,
            final String artifactId, final String version,
            final String extension)
            throws ArtifactResolutionException, ArtifactNotFoundException,
            DependencyCollectionException {
        Aether aether = new Aether(MAVEN_REPO, LOCAL_REPO);

        File result =
            aether
                .resolveArtifact(groupId, artifactId, version, extension);

        return result;
    }
}