org.sonarsource.sonarlint.core.container.global.GlobalTempFolderProvider Maven / Gradle / Ivy
/*
* SonarLint Core - Implementation
* Copyright (C) 2016-2021 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program 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.
*
* This program 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.sonarsource.sonarlint.core.container.global;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.FileUtils;
import org.picocontainer.ComponentLifecycle;
import org.picocontainer.PicoContainer;
import org.picocontainer.injectors.ProviderAdapter;
import org.sonar.api.utils.TempFolder;
import org.sonar.api.utils.log.Logger;
import org.sonar.api.utils.log.Loggers;
import org.sonarsource.sonarlint.core.client.api.common.AbstractGlobalConfiguration;
public class GlobalTempFolderProvider extends ProviderAdapter implements ComponentLifecycle {
private static final Logger LOG = Loggers.get(GlobalTempFolderProvider.class);
private static final long CLEAN_MAX_AGE = TimeUnit.DAYS.toMillis(21);
static final String TMP_NAME_PREFIX = ".sonartmp_";
private boolean started = false;
private GlobalTempFolder tempFolder;
public GlobalTempFolder provide(AbstractGlobalConfiguration globalConfiguration) {
if (tempFolder == null) {
Path workingPath = globalConfiguration.getWorkDir();
try {
cleanTempFolders(workingPath);
} catch (IOException e) {
LOG.error(String.format("failed to clean global working directory: %s", workingPath), e);
}
Path tempDir = createTempFolder(workingPath);
tempFolder = new GlobalTempFolder(tempDir.toFile(), true);
}
return tempFolder;
}
private static Path createTempFolder(Path workingPath) {
try {
Files.createDirectories(workingPath);
} catch (IOException e) {
throw new IllegalStateException("Failed to create working path: " + workingPath, e);
}
try {
return Files.createTempDirectory(workingPath, TMP_NAME_PREFIX);
} catch (IOException e) {
throw new IllegalStateException("Failed to create temporary folder in " + workingPath, e);
}
}
private static void cleanTempFolders(Path path) throws IOException {
if (Files.exists(path)) {
try (DirectoryStream stream = Files.newDirectoryStream(path, new CleanFilter())) {
for (Path p : stream) {
FileUtils.deleteQuietly(p.toFile());
}
}
}
}
private static class CleanFilter implements DirectoryStream.Filter {
@Override
public boolean accept(Path path) throws IOException {
if (!Files.isDirectory(path)) {
return false;
}
if (!path.getFileName().toString().startsWith(TMP_NAME_PREFIX)) {
return false;
}
long threshold = System.currentTimeMillis() - CLEAN_MAX_AGE;
// we could also check the timestamp in the name, instead
BasicFileAttributes attrs;
try {
attrs = Files.readAttributes(path, BasicFileAttributes.class);
} catch (IOException ioe) {
LOG.error(String.format("Couldn't read file attributes for %s : ", path), ioe);
return false;
}
long creationTime = attrs.creationTime().toMillis();
return creationTime < threshold;
}
}
@Override
public void start(PicoContainer container) {
started = true;
}
@Override
public void stop(PicoContainer container) {
if (tempFolder != null) {
tempFolder.stop();
}
}
@Override
public void dispose(PicoContainer container) {
// nothing to do
}
@Override
public boolean componentHasLifecycle() {
return true;
}
@Override
public boolean isStarted() {
return started;
}
}