| /* |
| * 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.eclipse.jgit.storage.dht; |
| |
| import java.io.IOException; |
| import java.text.MessageFormat; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.StoredConfig; |
| import org.eclipse.jgit.storage.dht.spi.Database; |
| import org.eclipse.jgit.storage.file.ReflogReader; |
| |
| /** |
| * A Git repository storing its objects and references in a DHT. |
| * <p> |
| * With the exception of repository creation, this class is thread-safe, but |
| * readers created from it are not. When creating a new repository using the |
| * {@link #create(boolean)} method, the newly constructed repository object does |
| * not ensure the assigned {@link #getRepositoryKey()} will be visible to all |
| * threads. Applications are encouraged to use their own synchronization when |
| * sharing a Repository instance that was used to create a new repository. |
| */ |
| public class DhtRepository extends Repository { |
| private final RepositoryName name; |
| |
| private final Database db; |
| |
| private final DhtRefDatabase refdb; |
| |
| private final DhtObjDatabase objdb; |
| |
| private final DhtConfig config; |
| |
| private RepositoryKey key; |
| |
| /** |
| * Initialize an in-memory representation of a DHT backed repository. |
| * |
| * @param builder |
| * description of the repository and its data storage. |
| */ |
| public DhtRepository(DhtRepositoryBuilder builder) { |
| super(builder); |
| this.name = RepositoryName.create(builder.getRepositoryName()); |
| this.key = builder.getRepositoryKey(); |
| this.db = builder.getDatabase(); |
| |
| this.refdb = new DhtRefDatabase(this, db); |
| this.objdb = new DhtObjDatabase(this, builder); |
| this.config = new DhtConfig(); |
| } |
| |
| /** @return database cluster that houses this repository (among others). */ |
| public Database getDatabase() { |
| return db; |
| } |
| |
| /** @return human readable name used to open this repository. */ |
| public RepositoryName getRepositoryName() { |
| return name; |
| } |
| |
| /** @return unique identity of the repository in the {@link #getDatabase()}. */ |
| public RepositoryKey getRepositoryKey() { |
| return key; |
| } |
| |
| @Override |
| public StoredConfig getConfig() { |
| return config; |
| } |
| |
| @Override |
| public DhtRefDatabase getRefDatabase() { |
| return refdb; |
| } |
| |
| @Override |
| public DhtObjDatabase getObjectDatabase() { |
| return objdb; |
| } |
| |
| @Override |
| public void create(boolean bare) throws IOException { |
| if (!bare) |
| throw new IllegalArgumentException( |
| DhtText.get().repositoryMustBeBare); |
| |
| if (getObjectDatabase().exists()) |
| throw new DhtException(MessageFormat.format( |
| DhtText.get().repositoryAlreadyExists, name.asString())); |
| |
| try { |
| key = db.repository().nextKey(); |
| db.repositoryIndex().putUnique(name, key); |
| } catch (TimeoutException err) { |
| throw new DhtTimeoutException(MessageFormat.format( |
| DhtText.get().timeoutLocatingRepository, name), err); |
| } |
| |
| 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()); |
| } |
| |
| @Override |
| public void scanForRepoChanges() { |
| refdb.clearCache(); |
| } |
| |
| @Override |
| public String toString() { |
| return "DhtRepostitory[" + key + " / " + name + "]"; |
| } |
| |
| // TODO This method should be removed from the JGit API. |
| @Override |
| public ReflogReader getReflogReader(String refName) { |
| throw new UnsupportedOperationException(); |
| } |
| } |