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* stable-4.8: SubmoduleUpdateCommand#setCallback should return 'this' CloneCommand#setCallback should return 'this' Prepare 4.7.2-SNAPSHOT builds JGit v4.7.1.201706071930-r ArchiveCommand: Create prefix entry with commit time Run auto GC in the background Update Orbit to the Oxygen version R20170516192513 Change-Id: Ibf90b4899d097474e7836e6baab8829e66fca524 Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>stable-4.9
David Pursehouse
8 years ago
20 changed files with 355 additions and 19 deletions
@ -1,7 +1,7 @@
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target "jgit-4.6" with source configurePhase |
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include "projects/jetty-9.4.5.tpd" |
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include "orbit/S20170306214312-Oxygen.tpd" |
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include "orbit/R20170516192513-Oxygen.tpd" |
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location "http://download.eclipse.org/releases/neon/" { |
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org.eclipse.osgi lazy |
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@ -1,7 +1,7 @@
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target "S20170306214312-Oxygen" with source configurePhase |
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target "R20170516192513-Oxygen" with source configurePhase |
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// see http://download.eclipse.org/tools/orbit/downloads/ |
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location "http://download.eclipse.org/tools/orbit/downloads/drops/S20170306214312/repository" { |
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location "http://download.eclipse.org/tools/orbit/downloads/drops/R20170516192513/repository" { |
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org.apache.ant [1.9.6.v201510161327,1.9.6.v201510161327] |
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org.apache.ant.source [1.9.6.v201510161327,1.9.6.v201510161327] |
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org.apache.commons.compress [1.6.0.v201310281400,1.6.0.v201310281400] |
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@ -0,0 +1,191 @@
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/* |
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* Copyright (C) 2017 Two Sigma Open Source |
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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.internal.storage.file; |
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import org.eclipse.jgit.api.errors.JGitInternalException; |
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import org.eclipse.jgit.internal.JGitText; |
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import org.eclipse.jgit.lib.ConfigConstants; |
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import org.eclipse.jgit.util.GitDateParser; |
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import org.eclipse.jgit.util.SystemReader; |
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import static java.nio.charset.StandardCharsets.UTF_8; |
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.IOException; |
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import java.nio.file.Files; |
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import java.nio.file.NoSuchFileException; |
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import java.nio.file.attribute.FileTime; |
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import java.text.MessageFormat; |
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import java.text.ParseException; |
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import java.time.Instant; |
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/** |
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* This class manages the gc.log file for a {@link FileRepository}. |
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*/ |
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class GcLog { |
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private final FileRepository repo; |
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private final File logFile; |
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private final LockFile lock; |
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private Instant gcLogExpire; |
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private static final String LOG_EXPIRY_DEFAULT = "1.day.ago"; //$NON-NLS-1$
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private boolean nonEmpty = false; |
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/** |
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* Construct a GcLog object for a {@link FileRepository} |
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* |
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* @param repo |
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* the repository |
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*/ |
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GcLog(FileRepository repo) { |
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this.repo = repo; |
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logFile = new File(repo.getDirectory(), "gc.log"); //$NON-NLS-1$
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lock = new LockFile(logFile); |
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} |
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private Instant getLogExpiry() throws ParseException { |
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if (gcLogExpire == null) { |
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String logExpiryStr = repo.getConfig().getString( |
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ConfigConstants.CONFIG_GC_SECTION, null, |
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ConfigConstants.CONFIG_KEY_LOGEXPIRY); |
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if (logExpiryStr == null) { |
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logExpiryStr = LOG_EXPIRY_DEFAULT; |
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} |
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gcLogExpire = GitDateParser.parse(logExpiryStr, null, |
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SystemReader.getInstance().getLocale()).toInstant(); |
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} |
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return gcLogExpire; |
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} |
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private boolean autoGcBlockedByOldLockFile(boolean background) { |
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try { |
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FileTime lastModified = Files.getLastModifiedTime(logFile.toPath()); |
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if (lastModified.toInstant().compareTo(getLogExpiry()) > 0) { |
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// There is an existing log file, which is too recent to ignore
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if (!background) { |
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try (BufferedReader reader = Files |
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.newBufferedReader(logFile.toPath())) { |
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char[] buf = new char[1000]; |
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int len = reader.read(buf, 0, 1000); |
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String oldError = new String(buf, 0, len); |
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throw new JGitInternalException(MessageFormat.format( |
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JGitText.get().gcLogExists, oldError, logFile)); |
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} |
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} |
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return true; |
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} |
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} catch (NoSuchFileException e) { |
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// No existing log file, OK.
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} catch (IOException | ParseException e) { |
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throw new JGitInternalException(e.getMessage(), e); |
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} |
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return false; |
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} |
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/** |
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* Lock the GC log file for updates |
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* |
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* @param background |
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* If true, and if gc.log already exists, unlock and return false |
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* @return {@code true} if we hold the lock |
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*/ |
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boolean lock(boolean background) { |
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try { |
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if (!lock.lock()) { |
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return false; |
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} |
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} catch (IOException e) { |
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throw new JGitInternalException(e.getMessage(), e); |
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} |
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if (autoGcBlockedByOldLockFile(background)) { |
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lock.unlock(); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Unlock (roll back) the GC log lock |
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*/ |
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void unlock() { |
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lock.unlock(); |
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} |
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/** |
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* Commit changes to the gc log, if there have been any writes. Otherwise, |
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* just unlock and delete the existing file (if any) |
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* |
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* @return true if committing (or unlocking/deleting) succeeds. |
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*/ |
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boolean commit() { |
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if (nonEmpty) { |
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return lock.commit(); |
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} else { |
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logFile.delete(); |
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lock.unlock(); |
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return true; |
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} |
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} |
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/** |
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* Write to the pending gc log. Content will be committed upon a call to |
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* commit() |
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* |
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* @param content |
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* The content to write |
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* @throws IOException |
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*/ |
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void write(String content) throws IOException { |
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if (content.length() > 0) { |
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nonEmpty = true; |
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} |
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lock.write(content.getBytes(UTF_8)); |
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} |
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} |
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