| /* |
| * 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.ketch; |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| import static org.eclipse.jgit.internal.ketch.Proposal.State.EXECUTED; |
| import static org.eclipse.jgit.internal.ketch.Proposal.State.QUEUED; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.NOT_ATTEMPTED; |
| import static org.eclipse.jgit.transport.ReceiveCommand.Result.REJECTED_OTHER_REASON; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.transport.PreReceiveHook; |
| import org.eclipse.jgit.transport.ProgressSpinner; |
| import org.eclipse.jgit.transport.ReceiveCommand; |
| import org.eclipse.jgit.transport.ReceivePack; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * PreReceiveHook for handling push traffic in a Ketch system. |
| * <p> |
| * Install an instance on {@link org.eclipse.jgit.transport.ReceivePack} to |
| * capture the commands and other connection state and relay them through the |
| * {@link org.eclipse.jgit.internal.ketch.KetchLeader}, allowing the leader to |
| * gain consensus about the new reference state. |
| */ |
| public class KetchPreReceive implements PreReceiveHook { |
| private static final Logger log = LoggerFactory.getLogger(KetchPreReceive.class); |
| |
| private final KetchLeader leader; |
| |
| /** |
| * Construct a hook executing updates through a |
| * {@link org.eclipse.jgit.internal.ketch.KetchLeader}. |
| * |
| * @param leader |
| * leader for this repository. |
| */ |
| public KetchPreReceive(KetchLeader leader) { |
| this.leader = leader; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onPreReceive(ReceivePack rp, Collection<ReceiveCommand> cmds) { |
| cmds = ReceiveCommand.filter(cmds, NOT_ATTEMPTED); |
| if (cmds.isEmpty()) { |
| return; |
| } |
| |
| try { |
| Proposal proposal = new Proposal(rp.getRevWalk(), cmds) |
| .setPushCertificate(rp.getPushCertificate()) |
| .setAuthor(rp.getRefLogIdent()) |
| .setMessage("push"); //$NON-NLS-1$ |
| leader.queueProposal(proposal); |
| if (proposal.isDone()) { |
| // This failed fast, e.g. conflict or bad precondition. |
| return; |
| } |
| |
| ProgressSpinner spinner = new ProgressSpinner( |
| rp.getMessageOutputStream()); |
| if (proposal.getState() == QUEUED) { |
| waitForQueue(proposal, spinner); |
| } |
| if (!proposal.isDone()) { |
| waitForPropose(proposal, spinner); |
| } |
| } catch (IOException | InterruptedException e) { |
| String msg = JGitText.get().transactionAborted; |
| for (ReceiveCommand cmd : cmds) { |
| if (cmd.getResult() == NOT_ATTEMPTED) { |
| cmd.setResult(REJECTED_OTHER_REASON, msg); |
| } |
| } |
| log.error(msg, e); |
| } |
| } |
| |
| private void waitForQueue(Proposal proposal, ProgressSpinner spinner) |
| throws InterruptedException { |
| spinner.beginTask(KetchText.get().waitingForQueue, 1, SECONDS); |
| while (!proposal.awaitStateChange(QUEUED, 250, MILLISECONDS)) { |
| spinner.update(); |
| } |
| switch (proposal.getState()) { |
| case RUNNING: |
| default: |
| spinner.endTask(KetchText.get().starting); |
| break; |
| |
| case EXECUTED: |
| spinner.endTask(KetchText.get().accepted); |
| break; |
| |
| case ABORTED: |
| spinner.endTask(KetchText.get().failed); |
| break; |
| } |
| } |
| |
| private void waitForPropose(Proposal proposal, ProgressSpinner spinner) |
| throws InterruptedException { |
| spinner.beginTask(KetchText.get().proposingUpdates, 2, SECONDS); |
| while (!proposal.await(250, MILLISECONDS)) { |
| spinner.update(); |
| } |
| spinner.endTask(proposal.getState() == EXECUTED |
| ? KetchText.get().accepted |
| : KetchText.get().failed); |
| } |
| } |