net.vexelon.jdevlog.vcs.git.GitSource.java Source code

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Here is the source code for net.vexelon.jdevlog.vcs.git.GitSource.java

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/*
 * The MIT License
 * 
 * Copyright (c) 2012 Petar Petrov
 * 
 * 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 net.vexelon.jdevlog.vcs.git;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.LogCommand;
import org.eclipse.jgit.api.errors.NoHeadException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryCache;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
import org.eclipse.jgit.util.FS;

import net.vexelon.jdevlog.config.ConfigOptions;
import net.vexelon.jdevlog.config.Configuration;
import net.vexelon.jdevlog.vcs.SCMException;
import net.vexelon.jdevlog.vcs.SCMSource;
import net.vexelon.jdevlog.vcs.svn.SvnSource;

public class GitSource implements SCMSource {

    protected Configuration configuration;
    protected Repository repository;

    protected GitSource(Configuration configuration) {
        this.configuration = configuration;
    }

    @Override
    public void initialize() throws SCMException {

        FileRepositoryBuilder builder = new FileRepositoryBuilder();
        File repoPath = new File(configuration.get(ConfigOptions.SOURCE));

        try {
            //         repository = builder.setGitDir(repoPath).build();
            repository = RepositoryCache.open(RepositoryCache.FileKey.lenient(repoPath, FS.DETECTED), true);
        } catch (IOException e) {
            throw new SCMException("Could not locate Git repository in " + repoPath.getAbsolutePath(), e);
        }
    }

    @Override
    public void authenticate() throws SCMException {
        // Empty
    }

    @Override
    public Iterator<?> getLastHistory(long maxEntries) throws SCMException {

        Iterable<RevCommit> log = null;

        try {
            Git git = new Git(repository);
            LogCommand cmd = git.log();

            cmd.setMaxCount((int) maxEntries);
            //         cmd.addPath(Constants.MASTER);

            try {
                cmd.add(repository.resolve(Constants.MASTER));
            } catch (Exception e) {
                throw new SCMException("Error getting log messages!", e);
            }

            log = cmd.call();
        } catch (NoHeadException e) {
            throw new SCMException("Error getting log messages!", e);
        }

        return log.iterator();
    }

    // ----------------------------------------------------

    public static GitSource newInstance(Configuration configuration) {
        return new GitSource(configuration);
    }

}