/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* SonarQube is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.plugins.scm.git;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.diff.RawTextComparator;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.api.batch.fs.InputFile;
import org.sonar.api.batch.scm.BlameCommand;
import org.sonar.api.batch.scm.BlameLine;
import org.sonar.api.scan.filesystem.PathResolver;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
public class JGitBlameCommand extends BlameCommand {
private static final Logger LOG = LoggerFactory.getLogger(JGitBlameCommand.class);
private final PathResolver pathResolver;
public JGitBlameCommand(PathResolver pathResolver) {
this.pathResolver = pathResolver;
}
@Override
public void blame(BlameInput input, BlameOutput output) {
File basedir = input.fileSystem().baseDir();
Repository repo = buildRepository(basedir);
try {
Git git = Git.wrap(repo);
File gitBaseDir = repo.getWorkTree();
ExecutorService executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors() + 1);
List<Future<Void>> tasks = submitTasks(input, output, git, gitBaseDir, executorService);
waitForTaskToComplete(tasks);
} finally {
if (repo != null) {
repo.close();
}
}
}
private void waitForTaskToComplete(List<Future<Void>> tasks) {
for (Future<Void> task : tasks) {
try {
task.get();
} catch (ExecutionException e) {
// Unwrap ExecutionException
throw e.getCause() instanceof RuntimeException ? (RuntimeException) e.getCause() : new IllegalStateException(e.getCause());
} catch (InterruptedException e) {
throw new IllegalStateException(e);
}
}
}
private List<Future<Void>> submitTasks(BlameInput input, BlameOutput output, Git git, File gitBaseDir, ExecutorService executorService) {
List<Future<Void>> tasks = new ArrayList<Future<Void>>();
for (InputFile inputFile : input.filesToBlame()) {
tasks.add(submitTask(output, git, gitBaseDir, inputFile, executorService));
}
return tasks;
}
private Repository buildRepository(File basedir) {
try {
return new RepositoryBuilder()
.findGitDir(basedir)
.setMustExist(true)
.build();
} catch (IOException e) {
throw new IllegalStateException("Unable to open Git repository", e);
}
}
private Future<Void> submitTask(final BlameOutput output, final Git git, final File gitBaseDir, final InputFile inputFile, ExecutorService executorService) {
return executorService.submit(new Callable<Void>() {
@Override
public Void call() throws GitAPIException {
blame(output, git, gitBaseDir, inputFile);
return null;
}
});
}
private void blame(BlameOutput output, Git git, File gitBaseDir, InputFile inputFile) throws GitAPIException {
String filename = pathResolver.relativePath(gitBaseDir, inputFile.file());
org.eclipse.jgit.blame.BlameResult blameResult = git.blame()
// Equivalent to -w command line option
.setTextComparator(RawTextComparator.WS_IGNORE_ALL)
.setFilePath(filename).call();
List<BlameLine> lines = new ArrayList<BlameLine>();
for (int i = 0; i < blameResult.getResultContents().size(); i++) {
if (blameResult.getSourceAuthor(i) == null || blameResult.getSourceCommit(i) == null) {
LOG.info("Author: " + blameResult.getSourceAuthor(i));
LOG.info("Source commit: " + blameResult.getSourceCommit(i));
throw new IllegalStateException("Unable to blame file " + inputFile.relativePath() + ". No blame info at line " + (i + 1) + ". Is file commited?");
}
lines.add(new org.sonar.api.batch.scm.BlameLine().date(blameResult.getSourceAuthor(i).getWhen()).revision(blameResult.getSourceCommit(i).getName())
.author(blameResult.getSourceAuthor(i).getEmailAddress()));
}
if (lines.size() == inputFile.lines() - 1) {
// SONARPLUGINS-3097 Git do not report blame on last empty line
lines.add(lines.get(lines.size() - 1));
}
output.blameResult(inputFile, lines);
}
}