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/*
* SonarQube
* Copyright (C) 2009-2025 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.sonar.api.impl.utils;
import java.nio.file.FileVisitResult;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import org.apache.commons.io.FileUtils;
import org.sonar.api.Startable;
import org.sonar.api.utils.TempFolder;
import javax.annotation.Nullable;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DefaultTempFolder implements TempFolder, Startable {
private static final Logger LOG = LoggerFactory.getLogger(DefaultTempFolder.class);
private final File tempDir;
private final boolean deleteOnExit;
public DefaultTempFolder(File tempDir) {
this(tempDir, false);
}
public DefaultTempFolder(File tempDir, boolean deleteOnExit) {
this.tempDir = tempDir;
this.deleteOnExit = deleteOnExit;
}
@Override
public File newDir() {
return createTempDir(tempDir.toPath()).toFile();
}
private static Path createTempDir(Path baseDir) {
try {
return Files.createTempDirectory(baseDir, null);
} catch (IOException e) {
throw new IllegalStateException("Failed to create temp directory", e);
}
}
@Override
public File newDir(String name) {
File dir = new File(tempDir, name);
try {
FileUtils.forceMkdir(dir);
} catch (IOException e) {
throw new IllegalStateException("Failed to create temp directory - " + dir, e);
}
return dir;
}
@Override
public File newFile() {
return newFile(null, null);
}
@Override
public File newFile(@Nullable String prefix, @Nullable String suffix) {
return createTempFile(tempDir.toPath(), prefix, suffix).toFile();
}
private static Path createTempFile(Path baseDir, String prefix, String suffix) {
try {
return Files.createTempFile(baseDir, prefix, suffix);
} catch (IOException e) {
throw new IllegalStateException("Failed to create temp file", e);
}
}
public void clean() {
try {
if (tempDir.exists()) {
Files.walkFileTree(tempDir.toPath(), DeleteRecursivelyFileVisitor.INSTANCE);
}
} catch (IOException e) {
LOG.error("Failed to delete temp folder", e);
}
}
@Override
public void start() {
// nothing to do
}
@Override
public void stop() {
if (deleteOnExit) {
clean();
}
}
private static final class DeleteRecursivelyFileVisitor extends SimpleFileVisitor<Path> {
public static final DeleteRecursivelyFileVisitor INSTANCE = new DeleteRecursivelyFileVisitor();
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
Files.deleteIfExists(file);
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
Files.deleteIfExists(dir);
return FileVisitResult.CONTINUE;
}
}
}
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