1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.surefire.api.util;
20
21 import java.io.File;
22 import java.util.Objects;
23 import java.util.stream.Stream;
24
25 /**
26 * Centralized file management of temporary files in surefire.<br>
27 * Files are deleted on VM exit.
28 *
29 * @author Markus Spann
30 */
31 public final class SureFireFileManager {
32
33 private static TempFileManager instance = create();
34
35 private static TempFileManager create() {
36 String subDirName = "surefire";
37
38 // create directory name suffix from legal chars in the current user name
39 // or a millisecond timestamp as fallback
40 String userSuffix = Stream.of("user.name", "USER", "USERNAME")
41 .map(System::getProperty)
42 .filter(Objects::nonNull)
43 .findFirst()
44 .map(u -> u.replaceAll("[^A-Za-z0-9\\-_]", ""))
45 .map(u -> u.isEmpty() ? null : u)
46 .orElse(Long.toString(System.currentTimeMillis()));
47
48 if (userSuffix != null) {
49 subDirName += "-" + userSuffix;
50 }
51
52 TempFileManager tfm = TempFileManager.instance(subDirName);
53 tfm.setDeleteOnExit(true);
54 return tfm;
55 }
56
57 public static File createTempFile(String prefix, String suffix) {
58 return instance.createTempFile(prefix, suffix);
59 }
60 }