| /* |
| * Copyright (C) 2016, 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.internal.storage.reftree; |
| |
| import static org.eclipse.jgit.lib.Constants.OBJ_TREE; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.NOT_ATTEMPTED; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.OK; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.REJECTED_NONFASTFORWARD; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.REJECTED_OTHER_REASON; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Type.UPDATE; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Type.UPDATE_NONFASTFORWARD; |
| |
| import java.io.IOException; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jgit.annotations.Nullable; |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.lib.BatchRefUpdate; |
| import org.eclipse.jgit.lib.CommitBuilder; |
| import org.eclipse.jgit.lib.NullProgressMonitor; |
| 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.ProgressMonitor; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.transport.ReceiveCommand; |
| |
| /** Batch update a {@link RefTreeDatabase}. */ |
| class RefTreeBatch extends BatchRefUpdate { |
| private final RefTreeDatabase refdb; |
| private Ref src; |
| private ObjectId parentCommitId; |
| private ObjectId parentTreeId; |
| private RefTree tree; |
| private PersonIdent author; |
| private ObjectId newCommitId; |
| |
| RefTreeBatch(RefTreeDatabase refdb) { |
| super(refdb); |
| this.refdb = refdb; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void execute(RevWalk rw, ProgressMonitor monitor) |
| throws IOException { |
| List<Command> todo = new ArrayList<>(getCommands().size()); |
| for (ReceiveCommand c : getCommands()) { |
| if (!isAllowNonFastForwards()) { |
| if (c.getType() == UPDATE) { |
| c.updateType(rw); |
| } |
| if (c.getType() == UPDATE_NONFASTFORWARD) { |
| c.setResult(REJECTED_NONFASTFORWARD); |
| if (isAtomic()) { |
| ReceiveCommand.abort(getCommands()); |
| return; |
| } |
| continue; |
| } |
| } |
| todo.add(new Command(rw, c)); |
| } |
| init(rw); |
| execute(rw, todo); |
| } |
| |
| void init(RevWalk rw) throws IOException { |
| src = refdb.getBootstrap().exactRef(refdb.getTxnCommitted()); |
| if (src != null && src.getObjectId() != null) { |
| RevCommit c = rw.parseCommit(src.getObjectId()); |
| parentCommitId = c; |
| parentTreeId = c.getTree(); |
| tree = RefTree.read(rw.getObjectReader(), c.getTree()); |
| } else { |
| parentCommitId = ObjectId.zeroId(); |
| parentTreeId = new ObjectInserter.Formatter() |
| .idFor(OBJ_TREE, new byte[] {}); |
| tree = RefTree.newEmptyTree(); |
| } |
| } |
| |
| @Nullable |
| Ref exactRef(ObjectReader reader, String name) throws IOException { |
| return tree.exactRef(reader, name); |
| } |
| |
| /** |
| * Execute an update from {@link RefTreeUpdate} or {@link RefTreeRename}. |
| * |
| * @param rw |
| * current RevWalk handling the update or rename. |
| * @param todo |
| * commands to execute. Must never be a bootstrap reference name. |
| * @throws IOException |
| * the storage system is unable to read or write data. |
| */ |
| void execute(RevWalk rw, List<Command> todo) throws IOException { |
| for (Command c : todo) { |
| if (c.getResult() != NOT_ATTEMPTED) { |
| Command.abort(todo, null); |
| return; |
| } |
| if (refdb.conflictsWithBootstrap(c.getRefName())) { |
| c.setResult(REJECTED_OTHER_REASON, MessageFormat |
| .format(JGitText.get().invalidRefName, c.getRefName())); |
| Command.abort(todo, null); |
| return; |
| } |
| } |
| |
| if (apply(todo) && newCommitId != null) { |
| commit(rw, todo); |
| } |
| } |
| |
| private boolean apply(List<Command> todo) throws IOException { |
| if (!tree.apply(todo)) { |
| // apply set rejection information on commands. |
| return false; |
| } |
| |
| Repository repo = refdb.getRepository(); |
| try (ObjectInserter ins = repo.newObjectInserter()) { |
| CommitBuilder b = new CommitBuilder(); |
| b.setTreeId(tree.writeTree(ins)); |
| if (parentTreeId.equals(b.getTreeId())) { |
| for (Command c : todo) { |
| c.setResult(OK); |
| } |
| return true; |
| } |
| if (!parentCommitId.equals(ObjectId.zeroId())) { |
| b.setParentId(parentCommitId); |
| } |
| |
| author = getRefLogIdent(); |
| if (author == null) { |
| author = new PersonIdent(repo); |
| } |
| b.setAuthor(author); |
| b.setCommitter(author); |
| b.setMessage(getRefLogMessage()); |
| newCommitId = ins.insert(b); |
| ins.flush(); |
| } |
| return true; |
| } |
| |
| private void commit(RevWalk rw, List<Command> todo) throws IOException { |
| ReceiveCommand commit = new ReceiveCommand( |
| parentCommitId, newCommitId, |
| refdb.getTxnCommitted()); |
| updateBootstrap(rw, commit); |
| |
| if (commit.getResult() == OK) { |
| for (Command c : todo) { |
| c.setResult(OK); |
| } |
| } else { |
| Command.abort(todo, commit.getResult().name()); |
| } |
| } |
| |
| private void updateBootstrap(RevWalk rw, ReceiveCommand commit) |
| throws IOException { |
| BatchRefUpdate u = refdb.getBootstrap().newBatchUpdate(); |
| u.setAllowNonFastForwards(true); |
| u.setPushCertificate(getPushCertificate()); |
| if (isRefLogDisabled()) { |
| u.disableRefLog(); |
| } else { |
| u.setRefLogIdent(author); |
| u.setRefLogMessage(getRefLogMessage(), false); |
| } |
| u.addCommand(commit); |
| u.execute(rw, NullProgressMonitor.INSTANCE); |
| } |
| } |