001/*
002 * SonarQube
003 * Copyright (C) 2009-2017 SonarSource SA
004 * mailto:info AT sonarsource DOT com
005 *
006 * This program is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * This program is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019 */
020package org.sonar.api.utils;
021
022import java.io.File;
023import java.io.IOException;
024import java.nio.file.Files;
025import java.nio.file.Path;
026
027/**
028 * @deprecated since 4.0 use {@link TempFolder}
029 */
030@Deprecated
031public final class TempFileUtils {
032
033  private TempFileUtils() {
034    // only static methods
035  }
036
037  /**
038   * Create a temporary directory. This directory is NOT deleted when the JVM stops, because using File#deleteOnExit()
039   * is evil (google "deleteonExit evil"). Copied from http://stackoverflow.com/questions/617414/create-a-temporary-directory-in-java :
040   * <ol>
041   * <li>deleteOnExit() only deletes for normal JVM shutdowns, not crashes or killing the JVM process</li>
042   * <li>deleteOnExit() only deletes on JVM shutdown - not good for long running server processes because 3 :</li>
043   * <li>The most evil of all - deleteOnExit() consumes memory for each temp file entry. If your process is running for months,
044   * or creates a lot of temp files in a short time, you consume memory and never release it until the JVM
045   * shuts down.</li>
046   * </ol>
047   */
048  public static File createTempDirectory() throws IOException {
049    return createTempDirectory("temp");
050  }
051
052  public static File createTempDirectory(String prefix) throws IOException {
053    Path dir = Files.createTempDirectory(prefix);
054    return dir.toFile();
055  }
056}