org.jenkinsci.git.FileRepositoryOperation.java Source code

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Here is the source code for org.jenkinsci.git.FileRepositoryOperation.java

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/*
 * Copyright (c) 2011 GitHub Inc.
 *
 * 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.jenkinsci.git;

import hudson.FilePath.FileCallable;
import hudson.remoting.VirtualChannel;

import java.io.File;
import java.io.IOException;

import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
import org.eclipse.jgit.util.FS;

/**
 * Operation that resolves a file-based {@link Repository} for a
 * {@link BuildRepository}
 *
 * @author Kevin Sawicki (kevin@github.com)
 */
public class FileRepositoryOperation implements FileCallable<Repository> {

    /** serialVersionUID */
    private static final long serialVersionUID = -552221808510096678L;

    private final BuildRepository repo;

    /**
     * Create file repository operation
     *
     * @param repository
     */
    public FileRepositoryOperation(BuildRepository repository) {
        if (repository == null)
            throw new IllegalArgumentException("Repository cannot be null");
        repo = repository;
    }

    public Repository invoke(File file, VirtualChannel channel) throws IOException {
        String directory = repo.getDirectory();
        File gitDir;
        if (directory == null || directory.length() == 0 || ".".equals(directory))
            gitDir = file;
        else
            gitDir = new File(file, directory);
        FileRepositoryBuilder builder = new FileRepositoryBuilder();
        builder.setFS(FS.DETECTED);
        if (Constants.DOT_GIT.equals(gitDir.getName()))
            builder.setGitDir(gitDir);
        else
            builder.setWorkTree(gitDir);
        builder.setMustExist(true);
        try {
            return builder.build();
        } catch (RepositoryNotFoundException rnfe) {
            return null;
        }
    }
}