org.chodavarapu.jgitaws.jgit.AmazonRepository.java Source code

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Here is the source code for org.chodavarapu.jgitaws.jgit.AmazonRepository.java

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/*
 * Copyright (c) 2015, Ravi Chodavarapu (rchodava@gmail.com)
 *
 * Parts of this are based on JGit, which has the following notes:
 *
 * Copyright (C) 2011, Google Inc.
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.chodavarapu.jgitaws.jgit;

import org.chodavarapu.jgitaws.JGitAwsConfiguration;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.internal.storage.dfs.*;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.ReflogReader;
import org.eclipse.jgit.lib.StoredConfig;

import java.io.IOException;
import java.text.MessageFormat;

/**
 * @author Ravi Chodavarapu (rchodava@gmail.com)
 */
public class AmazonRepository extends DfsRepository {
    private final JGitAwsConfiguration configuration;
    private final StoredConfig storedConfig;
    private final DfsObjDatabase objectDatabase;
    private final DfsRefDatabase refDatabase;

    private AmazonRepository(Builder builder) {
        super(builder);

        this.configuration = builder.getConfiguration();
        this.storedConfig = new DynamoStoredConfig(this, this.configuration);
        this.objectDatabase = new S3WithDynamoMetaDataObjDatabase(this, builder.getReaderOptions(),
                this.configuration);
        this.refDatabase = new DynamoRefDatabase(this, this.configuration);
    }

    public String getRepositoryName() {
        return getDescription().getRepositoryName();
    }

    @Override
    public void create(boolean bare) throws IOException {
        if (exists())
            throw new IOException(MessageFormat.format(JGitText.get().repositoryAlreadyExists, ""));

        String master = Constants.R_HEADS + Constants.MASTER;
        RefUpdate.Result result = updateRef(Constants.HEAD, true).link(master);
        if (result != RefUpdate.Result.NEW)
            throw new IOException(result.name());
    }

    public boolean exists() throws IOException {
        return true;
    }

    @Override
    public StoredConfig getConfig() {
        return storedConfig;
    }

    @Override
    public DfsObjDatabase getObjectDatabase() {
        return objectDatabase;
    }

    @Override
    public DfsRefDatabase getRefDatabase() {
        return refDatabase;
    }

    @Override
    public ReflogReader getReflogReader(String refName) throws IOException {
        throw new UnsupportedOperationException();
    }

    public static class Builder extends DfsRepositoryBuilder<Builder, AmazonRepository> {
        private JGitAwsConfiguration configuration;

        public JGitAwsConfiguration getConfiguration() {
            return configuration;
        }

        public Builder setConfiguration(JGitAwsConfiguration configuration) {
            this.configuration = configuration;
            return this;
        }

        @Override
        public Builder setup() throws IllegalArgumentException, IOException {
            if (getReaderOptions() == null)
                setReaderOptions(new DfsReaderOptions());
            if (getRepositoryDescription() == null)
                setRepositoryDescription(new DfsRepositoryDescription());
            return this;
        }

        @Override
        public AmazonRepository build() throws IOException {
            return new AmazonRepository(setup());
        }
    }
}