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JarJarMojo.java
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JarJarMojo.java
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/**
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.tonicsystems.jarjar;
import java.io.File;
import java.util.List;
import java.util.Set;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.resolver.filter.AndArtifactFilter;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;
import org.apache.maven.shared.artifact.filter.StrictPatternExcludesArtifactFilter;
import org.apache.maven.shared.artifact.filter.StrictPatternIncludesArtifactFilter;
import org.codehaus.plexus.archiver.Archiver;
import org.codehaus.plexus.archiver.UnArchiver;
import org.codehaus.plexus.archiver.manager.ArchiverManager;
import org.codehaus.plexus.util.FileUtils;
import com.tonicsystems.jarjar.util.StandaloneJarProcessor;
/**
* Repackage dependencies and embed them into the final artifact.
*
* @goal jarjar
* @phase package
* @requiresDependencyResolution test
*/
public class JarJarMojo
extends AbstractMojo
{
/**
* @parameter expression="${project}"
* @required
* @readonly
*/
private MavenProject project;
/**
* @parameter default-value="${project.build.directory}/jarjar"
* @required
*/
private File workingDirectory;
/**
* List of JarJar rules.
*
* @parameter
* @required
*/
private List<PatternElement> rules;
/**
* Where to get the original classes.
*
* @parameter
*/
private String input;
/**
* Where to put the JarJar'd classes.
*
* @parameter
*/
private String output;
/**
* List of "groupId:artifactId" dependencies to include.
*
* @parameter
*/
private List<String> includes;
/**
* List of "groupId:artifactId" dependencies to exclude.
*
* @parameter
*/
private List<String> excludes;
/**
* When true, don't JarJar the manifest.
*
* @parameter
*/
private boolean skipManifest;
/**
* When true, apply JarJar even if output already exists.
*
* @parameter
*/
private boolean overwrite;
/**
* @component
*/
private ArchiverManager archiverManager;
@SuppressWarnings( "unchecked" )
public void execute()
throws MojoExecutionException
{
try
{
// VALIDATE INPUT / OUTPUT
if ( null == input && null != project.getArtifact() )
{
input = project.getArtifact().getFile().getAbsolutePath();
}
if ( "{classes}".equals( input ) )
{
input = project.getBuild().getOutputDirectory();
}
if ( "{test-classes}".equals( input ) )
{
input = project.getBuild().getTestOutputDirectory();
}
if ( null == input || !new File( input ).exists() )
{
getLog().info( "Nothing to process" );
return;
}
if ( null == output )
{
output = input;
}
final File inputFile = new File( input );
final File outputFile = new File( output );
final boolean inPlaceJarJar = inputFile.equals( outputFile );
final File backupFile = new File( outputFile.getParentFile(), "original-" + outputFile.getName() );
if ( backupFile.isDirectory() && backupFile.list().length == 0 )
{
backupFile.delete();
}
if ( !overwrite && ( inPlaceJarJar && backupFile.exists() || !inPlaceJarJar && outputFile.exists() ) )
{
getLog().info( "Already processed" );
return;
}
// SETUP JARJAR
final MainProcessor processor = new MainProcessor( rules, getLog().isDebugEnabled(), skipManifest );
final AndArtifactFilter filter = new AndArtifactFilter();
if ( null != includes )
{
filter.add( new StrictPatternIncludesArtifactFilter( includes ) );
}
if ( null != excludes )
{
filter.add( new StrictPatternExcludesArtifactFilter( excludes ) );
}
// BUILD UBER-ZIP OF ARTIFACT + DEPENDENCIES
getLog().info( "Processing: " + inputFile );
final File uberZip = new File( workingDirectory, "uber-" + inputFile.getName() );
final Archiver archiver = archiverManager.getArchiver( "zip" );
archiver.setDestFile( uberZip );
if ( inputFile.isDirectory() )
{
archiver.addDirectory( inputFile );
}
else
{
archiver.addArchivedFileSet( inputFile );
}
for ( final Artifact a : (Set<Artifact>) project.getArtifacts() )
{
if ( filter.include( a ) )
{
try
{
archiver.addArchivedFileSet( a.getFile(), null, new String[] { "META-INF/MANIFEST.MF" } );
}
catch ( final Throwable e )
{
getLog().info( "Ignoring: " + a );
getLog().debug( e );
}
}
}
if ( !archiver.getResources().hasNext() )
{
getLog().info( "Nothing to JarJar" );
return;
}
archiver.createArchive();
// JARJAR UBER-ZIP
getLog().info( "JarJar'ing to: " + outputFile );
final File hullZip = new File( workingDirectory, "hull-" + inputFile.getName() );
StandaloneJarProcessor.run( uberZip, hullZip, processor, true );
processor.strip( hullZip );
final boolean toDirectory = outputFile.isDirectory() || !outputFile.exists() && inputFile.isDirectory();
if ( inPlaceJarJar )
{
try
{
getLog().info( "Original: " + backupFile );
FileUtils.rename( outputFile, backupFile );
}
catch ( final Throwable e )
{
getLog().warn( e.toString() );
}
}
if ( toDirectory )
{
outputFile.mkdirs();
final UnArchiver unarchiver = archiverManager.getUnArchiver( "zip" );
unarchiver.setDestDirectory( outputFile );
unarchiver.setSourceFile( hullZip );
unarchiver.extract();
}
else
{
FileUtils.copyFile( hullZip, outputFile );
}
}
catch ( final Throwable e )
{
throw new MojoExecutionException( "Unable to JarJar: " + input + " cause: " + e.getMessage(), e );
}
}
}