| /* |
| * Copyright (C) 2015, 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.pgm.debug; |
| |
| import static org.eclipse.jgit.lib.Constants.HEAD; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jgit.internal.storage.reftree.RefTree; |
| import org.eclipse.jgit.internal.storage.reftree.RefTreeDatabase; |
| import org.eclipse.jgit.lib.CommitBuilder; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectInserter; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.lib.PersonIdent; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.RefDatabase; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.StoredConfig; |
| import org.eclipse.jgit.pgm.Command; |
| import org.eclipse.jgit.pgm.TextBuiltin; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.kohsuke.args4j.Option; |
| |
| @Command(usage = "usage_RebuildRefTree") |
| class RebuildRefTree extends TextBuiltin { |
| @Option(name = "--enable", usage = "usage_RebuildRefTreeEnable") |
| boolean enable; |
| |
| private String txnNamespace; |
| private String txnCommitted; |
| |
| @Override |
| protected void run() throws Exception { |
| try (ObjectReader reader = db.newObjectReader(); |
| RevWalk rw = new RevWalk(reader); |
| ObjectInserter inserter = db.newObjectInserter()) { |
| RefDatabase refDb = db.getRefDatabase(); |
| if (refDb instanceof RefTreeDatabase) { |
| RefTreeDatabase d = (RefTreeDatabase) refDb; |
| refDb = d.getBootstrap(); |
| txnNamespace = d.getTxnNamespace(); |
| txnCommitted = d.getTxnCommitted(); |
| } else { |
| RefTreeDatabase d = new RefTreeDatabase(db, refDb); |
| txnNamespace = d.getTxnNamespace(); |
| txnCommitted = d.getTxnCommitted(); |
| } |
| |
| errw.format("Rebuilding %s from %s", //$NON-NLS-1$ |
| txnCommitted, refDb.getClass().getSimpleName()); |
| errw.println(); |
| errw.flush(); |
| |
| CommitBuilder b = new CommitBuilder(); |
| Ref ref = refDb.exactRef(txnCommitted); |
| RefUpdate update = refDb.newUpdate(txnCommitted, true); |
| ObjectId oldTreeId; |
| |
| if (ref != null && ref.getObjectId() != null) { |
| ObjectId oldId = ref.getObjectId(); |
| update.setExpectedOldObjectId(oldId); |
| b.setParentId(oldId); |
| oldTreeId = rw.parseCommit(oldId).getTree(); |
| } else { |
| update.setExpectedOldObjectId(ObjectId.zeroId()); |
| oldTreeId = ObjectId.zeroId(); |
| } |
| |
| RefTree tree = rebuild(refDb); |
| b.setTreeId(tree.writeTree(inserter)); |
| b.setAuthor(new PersonIdent(db)); |
| b.setCommitter(b.getAuthor()); |
| if (b.getTreeId().equals(oldTreeId)) { |
| return; |
| } |
| |
| update.setNewObjectId(inserter.insert(b)); |
| inserter.flush(); |
| |
| RefUpdate.Result result = update.update(rw); |
| switch (result) { |
| case NEW: |
| case FAST_FORWARD: |
| break; |
| default: |
| throw die(String.format("%s: %s", update.getName(), result)); //$NON-NLS-1$ |
| } |
| |
| if (enable && !(db.getRefDatabase() instanceof RefTreeDatabase)) { |
| StoredConfig cfg = db.getConfig(); |
| cfg.setInt("core", null, "repositoryformatversion", 1); //$NON-NLS-1$ //$NON-NLS-2$ |
| cfg.setString("extensions", null, "refsStorage", "reftree"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| cfg.save(); |
| errw.println("Enabled reftree."); //$NON-NLS-1$ |
| errw.flush(); |
| } |
| } |
| } |
| |
| private RefTree rebuild(RefDatabase refdb) throws IOException { |
| RefTree tree = RefTree.newEmptyTree(); |
| List<org.eclipse.jgit.internal.storage.reftree.Command> cmds |
| = new ArrayList<>(); |
| |
| Ref head = refdb.exactRef(HEAD); |
| if (head != null) { |
| cmds.add(new org.eclipse.jgit.internal.storage.reftree.Command( |
| null, |
| head)); |
| } |
| |
| for (Ref r : refdb.getRefs(RefDatabase.ALL).values()) { |
| if (r.getName().equals(txnCommitted) || r.getName().equals(HEAD) |
| || r.getName().startsWith(txnNamespace)) { |
| continue; |
| } |
| cmds.add(new org.eclipse.jgit.internal.storage.reftree.Command( |
| null, |
| db.peel(r))); |
| } |
| tree.apply(cmds); |
| return tree; |
| } |
| } |