MVN_REPOURL env var usage for Maven binary download

maven-wrapper/CHANGELOG.md

@@ -25,6 +25,13 @@ The following provides most information at an easier glance.
   - see https://github.com/takari/maven-wrapper/pull/105
   - fixes https://github.com/takari/maven-wrapper/issues/104
   - contributed by Manfred Moser http://www.simpligility.com
+- Support MVNW_REPOURL environment variable usage
+  -  during wrapper install and wrapper usage
+  - for wrapper and maven distro download
+  - in scripts and wrapper binary
+    - contributed by Manfred Moser http://www.simpligility.com
+
+Release performed by Manfred Moser - http://www.simpligility.com
 
 ## Version 0.4.2 - 2018-07-02
 
@@ -33,6 +40,8 @@ The following provides most information at an easier glance.
 - end of line in properties file
 - parent pom upgrade
 
+Release performed by Manfred Moser - http://www.simpligility.com
+
 ## Version 0.4.0 - 2018-02-19
 
 - Allow for wrapper to work without the jar file
@@ -44,6 +53,8 @@ The following provides most information at an easier glance.
 - Change URLs used to official Maven repo URL
   - done as part of above changes
 
+Release performed by Manfred Moser - http://www.simpligility.com
+
 ## Version 0.3.0 - 2017-10-25
 
 - Set title on shell window in Windows

maven-wrapper/src/main/java/org/apache/maven/wrapper/Installer.java

@@ -32,6 +32,7 @@ import java.util.Locale;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 
+
 /**
  * @author Hans Dockter
  */
@@ -48,7 +49,15 @@ public class Installer {
   }
 
   public File createDist(WrapperConfiguration configuration) throws Exception {
-    URI distributionUrl = configuration.getDistribution();
+    URI distributionUrl;
+    String mvnwRepoUrl = System.getenv(MavenWrapperMain.MVNW_REPOURL);
+    if (mvnwRepoUrl != null && !mvnwRepoUrl.isEmpty()) {
+      distributionUrl = new URI(mvnwRepoUrl + "/" + MavenWrapperMain.MVN_PATH);
+      Logger.info("Detected MVNW_REPOURL environment variable " + mvnwRepoUrl);
+    } else {
+      distributionUrl = configuration.getDistribution();
+    }
+    Logger.info("Downloading Maven binary from " + distributionUrl);
     boolean alwaysDownload = configuration.isAlwaysDownload();
     boolean alwaysUnpack = configuration.isAlwaysUnpack();
 

maven-wrapper/src/main/java/org/apache/maven/wrapper/MavenWrapperMain.java

@@ -38,6 +38,11 @@ public class MavenWrapperMain {
   public static final String MVNW_VERBOSE = "MVNW_VERBOSE";
   public static final String MVNW_USERNAME = "MVNW_USERNAME";
   public static final String MVNW_PASSWORD = "MVNW_PASSWORD";
+  public static final String MVNW_REPOURL = "MVNW_REPOURL";
+
+  public static final String MVN_VERSION = "3.6.0";
+  public static final String MVN_PATH =
+      "org/apache/maven/apache-maven/" + MVN_VERSION + "/apache-maven-"+ MVN_VERSION + "-bin.zip";
 
   public static void main(String[] args) throws Exception {
     File wrapperJar = wrapperJar();