Add a DFS repository description and reference it in each pack
Just as DfsPackDescription describes a pack but does not imply it is open in memory, a DfsRepositoryDescription describes a repository at a basic level without it necessarily being open. Change-Id: I890b5fccdda12c1090cfabf4083b5c0e98d717f6
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@ -111,15 +111,22 @@ public static enum PackSource {
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private final AtomicReference<PackList> packList;
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private final DfsRepository repository;
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private DfsReaderOptions readerOptions;
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/**
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* Initialize an object database for are repository.
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* Initialize an object database for our repository.
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*
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* @param repository
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* repository owning this object database.
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*
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* @param options
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* how readers should access the object database.
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*/
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protected DfsObjDatabase(DfsReaderOptions options) {
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protected DfsObjDatabase(DfsRepository repository,
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DfsReaderOptions options) {
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this.repository = repository;
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this.packList = new AtomicReference<PackList>(NO_PACKS);
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this.readerOptions = options;
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}
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@ -151,6 +158,11 @@ public DfsPackFile[] getPacks() throws IOException {
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return scanPacks(NO_PACKS).packs;
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}
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/** @return repository owning this object database. */
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protected DfsRepository getRepository() {
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return repository;
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}
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/**
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* Generate a new unique name for a pack file.
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*
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@ -57,6 +57,8 @@
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* modified once initialized and presented to the JGit DFS library.
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*/
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public class DfsPackDescription implements Comparable<DfsPackDescription> {
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private final DfsRepositoryDescription repoDesc;
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private final String packName;
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private long lastModified;
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@ -74,7 +76,7 @@ public class DfsPackDescription implements Comparable<DfsPackDescription> {
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private PackWriter.Statistics stats;
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/**
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* Initialize a description by pack name.
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* Initialize a description by pack name and repository.
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* <p>
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* The corresponding index file is assumed to exist and end with ".idx"
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* instead of ".pack". If this is not true implementors must extend the
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@ -85,11 +87,19 @@ public class DfsPackDescription implements Comparable<DfsPackDescription> {
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*
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* @param name
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* name of the pack file. Must end with ".pack".
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* @param repoDesc
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* description of the repo containing the pack file.
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*/
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public DfsPackDescription(String name) {
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public DfsPackDescription(DfsRepositoryDescription repoDesc, String name) {
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this.repoDesc = repoDesc;
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this.packName = name;
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}
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/** @return description of the repository. */
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public DfsRepositoryDescription getRepositoryDescription() {
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return repoDesc;
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}
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/** @return name of the pack file. */
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public String getPackName() {
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return packName;
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@ -231,8 +241,11 @@ public int hashCode() {
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@Override
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public boolean equals(Object b) {
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if (b instanceof DfsPackDescription)
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return getPackName().equals(((DfsPackDescription) b).getPackName());
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if (b instanceof DfsPackDescription) {
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DfsPackDescription desc = (DfsPackDescription) b;
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return getPackName().equals(desc.getPackName()) &&
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getRepositoryDescription().equals(desc.getRepositoryDescription());
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}
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return false;
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}
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@ -57,6 +57,8 @@
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public abstract class DfsRepository extends Repository {
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private final DfsConfig config;
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private final DfsRepositoryDescription description;
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/**
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* Initialize a DFS repository.
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*
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@ -66,6 +68,7 @@ public abstract class DfsRepository extends Repository {
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protected DfsRepository(DfsRepositoryBuilder builder) {
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super(builder);
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this.config = new DfsConfig();
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this.description = builder.getRepositoryDescription();
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}
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@Override
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@ -74,6 +77,11 @@ protected DfsRepository(DfsRepositoryBuilder builder) {
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@Override
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public abstract DfsRefDatabase getRefDatabase();
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/** @return a description of this repository. */
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public DfsRepositoryDescription getDescription() {
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return description;
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}
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/**
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* Check if the repository already exists.
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*
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@ -60,6 +60,8 @@ public abstract class DfsRepositoryBuilder<B extends DfsRepositoryBuilder, R ext
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extends BaseRepositoryBuilder<B, R> {
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private DfsReaderOptions readerOptions;
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private DfsRepositoryDescription repoDesc;
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/** @return options used by readers accessing the repository. */
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public DfsReaderOptions getReaderOptions() {
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return readerOptions;
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@ -77,11 +79,30 @@ public B setReaderOptions(DfsReaderOptions opt) {
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return self();
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}
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/** @return a description of the repository. */
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public DfsRepositoryDescription getRepositoryDescription() {
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return repoDesc;
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}
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/**
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* Set the repository description.
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*
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* @param desc
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* new repository description object.
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* @return {@code this}
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*/
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public B setRepositoryDescription(DfsRepositoryDescription desc) {
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repoDesc = desc;
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return self();
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}
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@Override
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public B setup() throws IllegalArgumentException, IOException {
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super.setup();
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if (getReaderOptions() == null)
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setReaderOptions(new DfsReaderOptions());
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if (getRepositoryDescription() == null)
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setRepositoryDescription(new DfsRepositoryDescription());
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return self();
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}
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@ -0,0 +1,91 @@
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/*
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* Copyright (C) 2011, Google Inc.
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.storage.dfs;
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/** A description of a Git repository on a DFS. */
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public class DfsRepositoryDescription {
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private final String repositoryName;
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/** Initialize a new, empty repository description. */
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public DfsRepositoryDescription() {
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this(null);
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}
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/**
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* Initialize a new repository description.
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*
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* @param repositoryName
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* the name of the repository.
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*/
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public DfsRepositoryDescription(String repositoryName) {
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this.repositoryName = repositoryName;
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}
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/** @return the name of the repository. */
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public String getRepositoryName() {
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return repositoryName;
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}
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@Override
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public int hashCode() {
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if (getRepositoryName() != null)
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return getRepositoryName().hashCode();
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return System.identityHashCode(this);
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}
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@Override
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public boolean equals(Object b) {
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if (b instanceof DfsRepositoryDescription){
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String name = getRepositoryName();
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String otherName = ((DfsRepositoryDescription) b).getRepositoryName();
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return name != null ? name.equals(otherName) : this == b;
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}
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return false;
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}
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@Override
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public String toString() {
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return "DfsRepositoryDescription[" + getRepositoryName() + "]";
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}
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}
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@ -30,8 +30,13 @@ public class InMemoryRepository extends DfsRepository {
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private final DfsRefDatabase refdb;
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/** Initialize a new in-memory repository. */
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public InMemoryRepository() {
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/**
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* Initialize a new in-memory repository.
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*
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* @param repoDesc
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* description of the repository.
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*/
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public InMemoryRepository(DfsRepository repoDesc) {
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super(new DfsRepositoryBuilder<DfsRepositoryBuilder, InMemoryRepository>() {
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@Override
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public InMemoryRepository build() throws IOException {
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@ -39,7 +44,7 @@ public InMemoryRepository build() throws IOException {
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}
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});
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objdb = new MemObjDatabase();
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objdb = new MemObjDatabase(this);
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refdb = new MemRefDatabase();
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}
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@ -57,8 +62,8 @@ private class MemObjDatabase extends DfsObjDatabase {
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private final AtomicInteger packId = new AtomicInteger();
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private List<DfsPackDescription> packs = new ArrayList<DfsPackDescription>();
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MemObjDatabase() {
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super(new DfsReaderOptions());
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MemObjDatabase(DfsRepository repo) {
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super(repo, new DfsReaderOptions());
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}
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@Override
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@ -69,7 +74,8 @@ protected synchronized List<DfsPackDescription> listPacks() {
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@Override
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protected DfsPackDescription newPack(PackSource source) {
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int id = packId.incrementAndGet();
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return new MemPack("pack-" + id + "-" + source.name());
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return new MemPack("pack-" + id + "-" + source.name(),
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getRepository().getDescription());
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}
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@Override
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@ -136,8 +142,8 @@ private static class MemPack extends DfsPackDescription {
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private byte[] packIndex;
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MemPack(String name) {
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super(name);
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MemPack(String name, DfsRepositoryDescription repoDesc) {
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super(repoDesc, name);
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}
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}
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