001package org.apache.maven.scm.provider.git.jgit.command.info;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 * http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022
023import java.io.File;
024import java.util.Collections;
025
026import org.apache.maven.scm.CommandParameters;
027import org.apache.maven.scm.ScmException;
028import org.apache.maven.scm.ScmFileSet;
029import org.apache.maven.scm.ScmResult;
030import org.apache.maven.scm.command.AbstractCommand;
031import org.apache.maven.scm.command.info.InfoItem;
032import org.apache.maven.scm.command.info.InfoScmResult;
033import org.apache.maven.scm.provider.ScmProviderRepository;
034import org.apache.maven.scm.provider.git.command.GitCommand;
035import org.apache.maven.scm.provider.git.jgit.command.JGitUtils;
036import org.codehaus.plexus.util.StringUtils;
037import org.eclipse.jgit.api.Git;
038import org.eclipse.jgit.lib.ObjectId;
039
040/**
041 * @since 1.9.5
042 */
043public class JGitInfoCommand
044    extends AbstractCommand
045    implements GitCommand
046{
047    @Override
048    protected ScmResult executeCommand( ScmProviderRepository repository, ScmFileSet fileSet,
049                                        CommandParameters parameters )
050        throws ScmException
051    {
052        Git git = null;
053        try
054        {
055            File basedir = fileSet.getBasedir();
056
057            git = Git.open( basedir );
058
059            ObjectId objectId = git.getRepository().resolve( "HEAD" );
060
061            InfoItem infoItem = new InfoItem();
062            infoItem.setRevision( StringUtils.trim( objectId.name() ) );
063            infoItem.setURL( basedir.getPath() );
064
065            return new InfoScmResult( Collections.singletonList( infoItem ),
066                                      new ScmResult( "JGit.resolve(HEAD)", "", objectId.toString(), true ) );
067        }
068        catch ( Exception e )
069        {
070            throw new ScmException( "JGit resolve failure!", e );
071        }
072        finally
073        {
074            JGitUtils.closeRepo( git );
075        }
076    }
077}