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- /*
- * 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 static org.eclipse.jgit.storage.dht.KeyUtils.format32;
- import static org.eclipse.jgit.storage.dht.KeyUtils.parse32;
- import static org.eclipse.jgit.util.RawParseUtils.decode;
-
- import java.text.MessageFormat;
-
- import org.eclipse.jgit.lib.AnyObjectId;
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.lib.ObjectId;
-
- /** Identifies an ObjectId in the DHT. */
- public final class ObjectIndexKey extends ObjectId implements RowKey {
- private static final int KEYLEN = 52;
-
- /**
- * @param repo
- * @param objId
- * @return the key
- */
- public static ObjectIndexKey create(RepositoryKey repo, AnyObjectId objId) {
- return new ObjectIndexKey(repo.asInt(), objId);
- }
-
- /**
- * @param key
- * @return the key
- */
- public static ObjectIndexKey fromBytes(byte[] key) {
- if (key.length != KEYLEN)
- throw new IllegalArgumentException(MessageFormat.format(
- DhtText.get().invalidChunkKey, decode(key)));
-
- int repo = parse32(key, 3);
- ObjectId id = ObjectId.fromString(key, 12);
- return new ObjectIndexKey(repo, id);
- }
-
- /**
- * @param key
- * @return the key
- */
- public static ObjectIndexKey fromString(String key) {
- return fromBytes(Constants.encodeASCII(key));
- }
-
- private final int repo;
-
- ObjectIndexKey(int repo, AnyObjectId objId) {
- super(objId);
- this.repo = repo;
- }
-
- /** @return the repository that contains the object. */
- public RepositoryKey getRepositoryKey() {
- return RepositoryKey.fromInt(repo);
- }
-
- int getRepositoryId() {
- return repo;
- }
-
- public byte[] asBytes() {
- byte[] r = new byte[KEYLEN];
- copyTo(r, 12);
- format32(r, 3, repo);
- // bucket is the leading 2 digits of the SHA-1.
- r[11] = '.';
- r[2] = '.';
- r[1] = r[12 + 1];
- r[0] = r[12 + 0];
- return r;
- }
-
- public String asString() {
- return decode(asBytes());
- }
-
- @Override
- public String toString() {
- return "object-index:" + asString();
- }
- }
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