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[MSHADE-36] Support for injecting the dependency-reduced-pom.xml into the final shaded jar
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‎src/it/MSHADE-36-inject-dep-reduced-pom-in-final/invoker.properties‎

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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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invoker.goals = clean package
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invoker.java.version = 1.8+

‎src/it/MSHADE-36-inject-dep-reduced-pom-in-final/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<project>
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.apache.maven.plugins.shade.its</groupId>
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<artifactId>shade-parent</artifactId>
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<version>1.0</version>
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<relativePath>../setup-parent</relativePath>
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</parent>
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<groupId>org.apache.maven.its.shade.drp</groupId>
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<artifactId>test</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<name>MSHADE-36</name>
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<description>
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Test to see that the dependency-reduced-pom.xml is injected into the final jar instead of the normal pom.xml
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</description>
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<properties>
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<maven.compiler.source>1.4</maven.compiler.source>
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<maven.compiler.target>1.4</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>3.8.2</version>
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</dependency>
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<dependency>
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<groupId>org.codehaus.plexus</groupId>
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<artifactId>plexus-utils</artifactId>
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<version>1.4.1</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>2.0.2</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>@project.version@</version>
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<executions>
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<execution>
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<id>attach-shade</id>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<minimizeJar>true</minimizeJar>
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<createDependencyReducedPom>true</createDependencyReducedPom>
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<useDependencyReducedPomInJar>true</useDependencyReducedPomInJar>
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<relocations>
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<relocation>
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<pattern>org.codehaus.plexus</pattern>
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<shadedPattern>nl.example.shaded.org.codehaus.plexus</shadedPattern>
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</relocation>
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</relocations>
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<artifactSet>
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<includes>
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<include>junit:junit</include>
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<include>org.codehaus.plexus:plexus-utils</include>
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</includes>
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</artifactSet>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/it/MSHADE-36-inject-dep-reduced-pom-in-final/src/main/java/nl/example/Main.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package nl.example;
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import org.codehaus.plexus.util.StringUtils;
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public class Main
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{
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public static void main( String[] args ) {
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System.out.println( "Hello World!" + ( isEmpty("foo") ? " is empty!" : " -- ") );
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}
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public static boolean isEmpty( String input ) {
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return StringUtils.isEmpty( input );
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}
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}

‎src/it/MSHADE-36-inject-dep-reduced-pom-in-final/verify.bsh‎

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/*
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* Licensed to the Apache Software Foundation (ASF ) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License" ); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import java.io.*;
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import java.util.jar.*;
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import java.util.Arrays;
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import org.codehaus.plexus.util.*;
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String[] wanted =
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{
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"nl/example/Main.class",
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"junit/swingui/icons/error.gif",
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"nl/example/shaded/org/codehaus/plexus/util/StringUtils.class",
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};
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String[] unwanted =
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{
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"junit/swingui/TestRunner.class",
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"org/codehaus/plexus/util/StringUtils.class",
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};
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JarFile jarFile = null;
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try
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{
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jarFile = new JarFile( new File( basedir, "target/test-1.0.jar" ) );
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for( String path:wanted )
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{
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if( jarFile.getEntry( path )==null )
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{
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throw new IllegalStateException( "wanted path is missing: "+path );
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}
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}
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for( String path:unwanted )
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{
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if( jarFile.getEntry( path )!=null )
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{
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throw new IllegalStateException( "unwanted path is present: "+path );
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}
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}
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JarEntry jarEntry=jarFile.getEntry( "META-INF/maven/org.apache.maven.its.shade.drp/test/pom.xml" );
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String pomFile=IOUtil.toString( jarFile.getInputStream( jarEntry ),"UTF-8" );
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if( pomFile.contains( "<groupId>org.codehaus.plexus</groupId>" ) ){
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throw new IllegalStateException( "The pom.xml still contains a reference to the org.codehaus.plexus dependency" );
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}
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}
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finally
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{
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if ( jarFile != null ) {
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jarFile.close();
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}
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}

‎src/main/java/org/apache/maven/plugins/shade/mojo/ShadeMojo.java‎

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import java.util.Map;
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import java.util.Set;
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import static org.apache.maven.plugins.shade.resource.UseDependencyReducedPomXml.createPomXmlReplaceTransformers;
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/**
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* Mojo that performs shading delegating to the Shader component.
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*
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@Parameter( defaultValue = "false" )
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private boolean generateUniqueDependencyReducedPom;
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/**
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* Do we put the dependency reduced pom in the jar instead of the jar file provided by the project.
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*
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* @since 3.2.2
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*/
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@Parameter( defaultValue = "false" )
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private boolean useDependencyReducedPomInJar;
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/**
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* When true, dependencies are kept in the pom but with scope 'provided'; when false, the dependency is removed.
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*/
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List<ResourceTransformer> resourceTransformers = getResourceTransformers();
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if ( createDependencyReducedPom )
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{
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createDependencyReducedPom( artifactIds );
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}
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if ( useDependencyReducedPomInJar )
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{
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if ( !createDependencyReducedPom )
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{
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throw new MojoExecutionException(
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"Cannot use the dependency-reduced-pom.xml if it is not created." );
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}
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// In some cases the used implementation of the resourceTransformers is immutable.
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resourceTransformers = new ArrayList<>( resourceTransformers );
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resourceTransformers.addAll( createPomXmlReplaceTransformers( project, dependencyReducedPomLocation ) );
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}
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ShadeRequest shadeRequest = shadeRequest( artifacts, outputJar, filters, relocators, resourceTransformers );
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shader.shade( shadeRequest );
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projectHelper.attachArtifact( project, "jar", "tests", shadedTests );
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}
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if ( createDependencyReducedPom )
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{
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createDependencyReducedPom( artifactIds );
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}
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}
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}
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}

‎src/main/java/org/apache/maven/plugins/shade/resource/UseDependencyReducedPomXml.java‎

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package org.apache.maven.plugins.shade.resource;
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
8+
* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
19+
* under the License.
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*/
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import org.apache.maven.project.MavenProject;
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import java.io.File;
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import java.util.Arrays;
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import java.util.List;
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/**
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* Manually creates the resource processors needed to remove the original pom.xml and inject
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* the dependency-reduced-pom.xml in it's place in the shaded JAR.
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*/
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public class UseDependencyReducedPomXml
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{
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public static List<ResourceTransformer> createPomXmlReplaceTransformers(
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MavenProject project,
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File dependencyReducedPomLocation
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)
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{
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String pomXmlInFinalJarFilename =
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"META-INF/maven/" + project.getGroupId() + "/" + project.getArtifactId() + "/pom.xml";
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DontIncludeResourceTransformer removePomXML = new DontIncludeResourceTransformer();
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removePomXML.resource = pomXmlInFinalJarFilename;
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IncludeResourceTransformer insertDependencyReducedPomXML = new IncludeResourceTransformer();
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insertDependencyReducedPomXML.file = dependencyReducedPomLocation;
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insertDependencyReducedPomXML.resource = pomXmlInFinalJarFilename;
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return Arrays.asList(
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removePomXML,
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insertDependencyReducedPomXML
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);
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}
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}

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