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| 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 | + |
| 20 | +import java.net.*; |
| 21 | +import java.io.*; |
| 22 | +import java.nio.channels.*; |
| 23 | +import java.util.Properties; |
| 24 | + |
| 25 | +public class MavenWrapperDownloader |
| 26 | +{ |
| 27 | + private static final String WRAPPER_VERSION = "3.1.0"; |
| 28 | + |
| 29 | + /** |
| 30 | + * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided. |
| 31 | + */ |
| 32 | + private static final String DEFAULT_DOWNLOAD_URL = |
| 33 | + "https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/" + WRAPPER_VERSION |
| 34 | + + "/maven-wrapper-" + WRAPPER_VERSION + ".jar"; |
| 35 | + |
| 36 | + /** |
| 37 | + * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to use instead of the |
| 38 | + * default one. |
| 39 | + */ |
| 40 | + private static final String MAVEN_WRAPPER_PROPERTIES_PATH = ".mvn/wrapper/maven-wrapper.properties"; |
| 41 | + |
| 42 | + /** |
| 43 | + * Path where the maven-wrapper.jar will be saved to. |
| 44 | + */ |
| 45 | + private static final String MAVEN_WRAPPER_JAR_PATH = ".mvn/wrapper/maven-wrapper.jar"; |
| 46 | + |
| 47 | + /** |
| 48 | + * Name of the property which should be used to override the default download url for the wrapper. |
| 49 | + */ |
| 50 | + private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl"; |
| 51 | + |
| 52 | + public static void main( String args[] ) |
| 53 | + { |
| 54 | + System.out.println( "- Downloader started" ); |
| 55 | + File baseDirectory = new File( args[0] ); |
| 56 | + System.out.println( "- Using base directory: " + baseDirectory.getAbsolutePath() ); |
| 57 | + |
| 58 | + // If the maven-wrapper.properties exists, read it and check if it contains a custom |
| 59 | + // wrapperUrl parameter. |
| 60 | + File mavenWrapperPropertyFile = new File( baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH ); |
| 61 | + String url = DEFAULT_DOWNLOAD_URL; |
| 62 | + if ( mavenWrapperPropertyFile.exists() ) |
| 63 | + { |
| 64 | + FileInputStream mavenWrapperPropertyFileInputStream = null; |
| 65 | + try |
| 66 | + { |
| 67 | + mavenWrapperPropertyFileInputStream = new FileInputStream( mavenWrapperPropertyFile ); |
| 68 | + Properties mavenWrapperProperties = new Properties(); |
| 69 | + mavenWrapperProperties.load( mavenWrapperPropertyFileInputStream ); |
| 70 | + url = mavenWrapperProperties.getProperty( PROPERTY_NAME_WRAPPER_URL, url ); |
| 71 | + } |
| 72 | + catch ( IOException e ) |
| 73 | + { |
| 74 | + System.out.println( "- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'" ); |
| 75 | + } |
| 76 | + finally |
| 77 | + { |
| 78 | + try |
| 79 | + { |
| 80 | + if ( mavenWrapperPropertyFileInputStream != null ) |
| 81 | + { |
| 82 | + mavenWrapperPropertyFileInputStream.close(); |
| 83 | + } |
| 84 | + } |
| 85 | + catch ( IOException e ) |
| 86 | + { |
| 87 | + // Ignore ... |
| 88 | + } |
| 89 | + } |
| 90 | + } |
| 91 | + System.out.println( "- Downloading from: " + url ); |
| 92 | + |
| 93 | + File outputFile = new File( baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH ); |
| 94 | + if ( !outputFile.getParentFile().exists() ) |
| 95 | + { |
| 96 | + if ( !outputFile.getParentFile().mkdirs() ) |
| 97 | + { |
| 98 | + System.out.println( "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() |
| 99 | + + "'" ); |
| 100 | + } |
| 101 | + } |
| 102 | + System.out.println( "- Downloading to: " + outputFile.getAbsolutePath() ); |
| 103 | + try |
| 104 | + { |
| 105 | + downloadFileFromURL( url, outputFile ); |
| 106 | + System.out.println( "Done" ); |
| 107 | + System.exit( 0 ); |
| 108 | + } |
| 109 | + catch ( Throwable e ) |
| 110 | + { |
| 111 | + System.out.println( "- Error downloading" ); |
| 112 | + e.printStackTrace(); |
| 113 | + System.exit( 1 ); |
| 114 | + } |
| 115 | + } |
| 116 | + |
| 117 | + private static void downloadFileFromURL( String urlString, File destination ) |
| 118 | + throws Exception |
| 119 | + { |
| 120 | + if ( System.getenv( "MVNW_USERNAME" ) != null && System.getenv( "MVNW_PASSWORD" ) != null ) |
| 121 | + { |
| 122 | + String username = System.getenv( "MVNW_USERNAME" ); |
| 123 | + char[] password = System.getenv( "MVNW_PASSWORD" ).toCharArray(); |
| 124 | + Authenticator.setDefault( new Authenticator() |
| 125 | + { |
| 126 | + @Override |
| 127 | + protected PasswordAuthentication getPasswordAuthentication() |
| 128 | + { |
| 129 | + return new PasswordAuthentication( username, password ); |
| 130 | + } |
| 131 | + } ); |
| 132 | + } |
| 133 | + URL website = new URL( urlString ); |
| 134 | + ReadableByteChannel rbc; |
| 135 | + rbc = Channels.newChannel( website.openStream() ); |
| 136 | + FileOutputStream fos = new FileOutputStream( destination ); |
| 137 | + fos.getChannel().transferFrom( rbc, 0, Long.MAX_VALUE ); |
| 138 | + fos.close(); |
| 139 | + rbc.close(); |
| 140 | + } |
| 141 | + |
| 142 | +} |
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