source: trip-planner/.mvn/wrapper/MavenWrapperDownloader.java

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 4.8 KB
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1/*
2 * Copyright 2007-present the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import java.net.*;
18import java.io.*;
19import java.nio.channels.*;
20import java.util.Properties;
21
22public class MavenWrapperDownloader {
23
24 private static final String WRAPPER_VERSION = "0.5.6";
25 /**
26 * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
27 */
28 private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
29 + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
30
31 /**
32 * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
33 * use instead of the default one.
34 */
35 private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
36 ".mvn/wrapper/maven-wrapper.properties";
37
38 /**
39 * Path where the maven-wrapper.jar will be saved to.
40 */
41 private static final String MAVEN_WRAPPER_JAR_PATH =
42 ".mvn/wrapper/maven-wrapper.jar";
43
44 /**
45 * Name of the property which should be used to override the default download url for the wrapper.
46 */
47 private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
48
49 public static void main(String args[]) {
50 System.out.println("- Downloader started");
51 File baseDirectory = new File(args[0]);
52 System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
53
54 // If the maven-wrapper.properties exists, read it and check if it contains a custom
55 // wrapperUrl parameter.
56 File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
57 String url = DEFAULT_DOWNLOAD_URL;
58 if (mavenWrapperPropertyFile.exists()) {
59 FileInputStream mavenWrapperPropertyFileInputStream = null;
60 try {
61 mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
62 Properties mavenWrapperProperties = new Properties();
63 mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
64 url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
65 } catch (IOException e) {
66 System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
67 } finally {
68 try {
69 if (mavenWrapperPropertyFileInputStream != null) {
70 mavenWrapperPropertyFileInputStream.close();
71 }
72 } catch (IOException e) {
73 // Ignore ...
74 }
75 }
76 }
77 System.out.println("- Downloading from: " + url);
78
79 File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
80 if (!outputFile.getParentFile().exists()) {
81 if (!outputFile.getParentFile().mkdirs()) {
82 System.out.println(
83 "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
84 }
85 }
86 System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
87 try {
88 downloadFileFromURL(url, outputFile);
89 System.out.println("Done");
90 System.exit(0);
91 } catch (Throwable e) {
92 System.out.println("- Error downloading");
93 e.printStackTrace();
94 System.exit(1);
95 }
96 }
97
98 private static void downloadFileFromURL(String urlString, File destination) throws Exception {
99 if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
100 String username = System.getenv("MVNW_USERNAME");
101 char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
102 Authenticator.setDefault(new Authenticator() {
103 @Override
104 protected PasswordAuthentication getPasswordAuthentication() {
105 return new PasswordAuthentication(username, password);
106 }
107 });
108 }
109 URL website = new URL(urlString);
110 ReadableByteChannel rbc;
111 rbc = Channels.newChannel(website.openStream());
112 FileOutputStream fos = new FileOutputStream(destination);
113 fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
114 fos.close();
115 rbc.close();
116 }
117
118}
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