package org.apache.maven.project;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.maven.artifact.InvalidRepositoryException;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.classrealm.ClassRealmManager;
import org.apache.maven.execution.scope.internal.MojoExecutionScope;
import org.apache.maven.model.Build;
import org.apache.maven.model.Extension;
import org.apache.maven.model.Model;
import org.apache.maven.model.Plugin;
import org.apache.maven.model.Repository;
import org.apache.maven.plugin.ExtensionRealmCache;
import org.apache.maven.plugin.PluginArtifactsCache;
import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.internal.PluginDependenciesResolver;
import org.apache.maven.plugin.version.DefaultPluginVersionRequest;
import org.apache.maven.plugin.version.PluginVersionRequest;
import org.apache.maven.plugin.version.PluginVersionResolutionException;
import org.apache.maven.plugin.version.PluginVersionResolver;
import org.apache.maven.repository.RepositorySystem;
import org.codehaus.plexus.DefaultPlexusContainer;
import org.codehaus.plexus.PlexusContainer;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.codehaus.plexus.logging.Logger;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.graph.DependencyNode;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.util.filter.ExclusionsDependencyFilter;
import org.eclipse.aether.util.graph.visitor.PreorderNodeListGenerator;
/**
* Assists the project builder. <strong>Warning:</strong> This is an internal utility class that is only public for
* technical reasons, it is not part of the public API. In particular, this class can be changed or deleted without
* prior notice.
*
* @author Benjamin Bentmann
*/
@Component( role = ProjectBuildingHelper.class )
public class DefaultProjectBuildingHelper
implements ProjectBuildingHelper
{
@Requirement
private Logger logger;
@Requirement
private PlexusContainer container;
@Requirement
private ClassRealmManager classRealmManager;
@Requirement
private PluginArtifactsCache pluginArtifactsCache;
@Requirement
private ExtensionRealmCache extensionRealmCache;
@Requirement
private ProjectRealmCache projectRealmCache;
@Requirement
private RepositorySystem repositorySystem;
@Requirement
private PluginVersionResolver pluginVersionResolver;
@Requirement
private PluginDependenciesResolver pluginDependenciesResolver;
private ExtensionDescriptorBuilder extensionDescriptorBuilder = new ExtensionDescriptorBuilder();
public List<ArtifactRepository> createArtifactRepositories( List<Repository> pomRepositories,
List<ArtifactRepository> externalRepositories,
ProjectBuildingRequest request )
throws InvalidRepositoryException
{
List<ArtifactRepository> internalRepositories = new ArrayList<ArtifactRepository>();
for ( Repository repository : pomRepositories )
{
internalRepositories.add( repositorySystem.buildArtifactRepository( repository ) );
}
repositorySystem.injectMirror( request.getRepositorySession(), internalRepositories );
repositorySystem.injectProxy( request.getRepositorySession(), internalRepositories );
repositorySystem.injectAuthentication( request.getRepositorySession(), internalRepositories );
List<ArtifactRepository> dominantRepositories;
List<ArtifactRepository> recessiveRepositories;
if ( ProjectBuildingRequest.RepositoryMerging.REQUEST_DOMINANT.equals( request.getRepositoryMerging() ) )
{
dominantRepositories = externalRepositories;
recessiveRepositories = internalRepositories;
}
else
{
dominantRepositories = internalRepositories;
recessiveRepositories = externalRepositories;
}
List<ArtifactRepository> artifactRepositories = new ArrayList<ArtifactRepository>();
Collection<String> repoIds = new HashSet<String>();
if ( dominantRepositories != null )
{
for ( ArtifactRepository repository : dominantRepositories )
{
repoIds.add( repository.getId() );
artifactRepositories.add( repository );
}
}
if ( recessiveRepositories != null )
{
for ( ArtifactRepository repository : recessiveRepositories )
{
if ( repoIds.add( repository.getId() ) )
{
artifactRepositories.add( repository );
}
}
}
artifactRepositories = repositorySystem.getEffectiveRepositories( artifactRepositories );
return artifactRepositories;
}
public synchronized ProjectRealmCache.CacheRecord createProjectRealm( MavenProject project, Model model,
ProjectBuildingRequest request )
throws PluginResolutionException, PluginVersionResolutionException
{
ClassRealm projectRealm;
List<Plugin> extensionPlugins = new ArrayList<Plugin>();
Build build = model.getBuild();
if ( build != null )
{
for ( Extension extension : build.getExtensions() )
{
Plugin plugin = new Plugin();
plugin.setGroupId( extension.getGroupId() );
plugin.setArtifactId( extension.getArtifactId() );
plugin.setVersion( extension.getVersion() );
extensionPlugins.add( plugin );
}
for ( Plugin plugin : build.getPlugins() )
{
if ( plugin.isExtensions() )
{
extensionPlugins.add( plugin );
}
}
}
if ( extensionPlugins.isEmpty() )
{
if ( logger.isDebugEnabled() )
{
logger.debug( "Extension realms for project " + model.getId() + ": (none)" );
}
return new ProjectRealmCache.CacheRecord( null, null );
}
List<ClassRealm> extensionRealms = new ArrayList<ClassRealm>();
Map<ClassRealm, List<String>> exportedPackages = new HashMap<ClassRealm, List<String>>();
Map<ClassRealm, List<String>> exportedArtifacts = new HashMap<ClassRealm, List<String>>();
List<Artifact> publicArtifacts = new ArrayList<Artifact>();
for ( Plugin plugin : extensionPlugins )
{
if ( plugin.getVersion() == null )
{
PluginVersionRequest versionRequest =
new DefaultPluginVersionRequest( plugin, request.getRepositorySession(),
project.getRemotePluginRepositories() );
plugin.setVersion( pluginVersionResolver.resolve( versionRequest ).getVersion() );
}
List<Artifact> artifacts;
PluginArtifactsCache.Key cacheKey =
pluginArtifactsCache.createKey( plugin, null, project.getRemotePluginRepositories(),
request.getRepositorySession() );
PluginArtifactsCache.CacheRecord recordArtifacts = pluginArtifactsCache.get( cacheKey );
if ( recordArtifacts != null )
{
artifacts = recordArtifacts.artifacts;
}
else
{
try
{
artifacts = resolveExtensionArtifacts( plugin, project.getRemotePluginRepositories(), request );
recordArtifacts = pluginArtifactsCache.put( cacheKey, artifacts );
}
catch ( PluginResolutionException e )
{
pluginArtifactsCache.put( cacheKey, e );
pluginArtifactsCache.register( project, recordArtifacts );
throw e;
}
}
pluginArtifactsCache.register( project, recordArtifacts );
ClassRealm extensionRealm;
ExtensionDescriptor extensionDescriptor = null;
ExtensionRealmCache.CacheRecord recordRealm = extensionRealmCache.get( artifacts );
if ( recordRealm != null )
{
extensionRealm = recordRealm.realm;
extensionDescriptor = recordRealm.desciptor;
}
else
{
extensionRealm = classRealmManager.createExtensionRealm( plugin, artifacts );
try
{
( (DefaultPlexusContainer) container ).discoverComponents( extensionRealm,
MojoExecutionScope.getScopeModule( container ) );
}
catch ( Exception e )
{
throw new IllegalStateException( "Failed to discover components in extension realm "
+ extensionRealm.getId(), e );
}
Artifact extensionArtifact = artifacts.get( 0 );
try
{
extensionDescriptor = extensionDescriptorBuilder.build( extensionArtifact.getFile() );
}
catch ( IOException e )
{
String message = "Invalid extension descriptor for " + plugin.getId() + ": " + e.getMessage();
if ( logger.isDebugEnabled() )
{
logger.error( message, e );
}
else
{
logger.error( message );
}
}
recordRealm = extensionRealmCache.put( artifacts, extensionRealm, extensionDescriptor );
}
extensionRealmCache.register( project, recordRealm );
extensionRealms.add( extensionRealm );
if ( extensionDescriptor != null )
{
exportedPackages.put( extensionRealm, extensionDescriptor.getExportedPackages() );
exportedArtifacts.put( extensionRealm, extensionDescriptor.getExportedArtifacts() );
}
if ( !plugin.isExtensions() && artifacts.size() == 2 && artifacts.get( 0 ).getFile() != null
&& "plexus-utils".equals( artifacts.get( 1 ).getArtifactId() ) )
{
/*
* This is purely for backward-compat with 2.x where <extensions> consisting of a single artifact where
* loaded into the core and hence available to plugins, in contrast to bigger extensions that were
* loaded into a dedicated realm which is invisible to plugins (MNG-2749).
*/
publicArtifacts.add( artifacts.get( 0 ) );
}
}
if ( logger.isDebugEnabled() )
{
logger.debug( "Extension realms for project " + model.getId() + ": " + extensionRealms );
}
ProjectRealmCache.CacheRecord record = projectRealmCache.get( extensionRealms );
if ( record == null )
{
projectRealm = classRealmManager.createProjectRealm( model, publicArtifacts );
Set<String> exclusions = new LinkedHashSet<String>();
for ( ClassRealm extensionRealm : extensionRealms )
{
List<String> excludes = exportedArtifacts.get( extensionRealm );
if ( excludes != null )
{
exclusions.addAll( excludes );
}
List<String> exports = exportedPackages.get( extensionRealm );
if ( exports == null || exports.isEmpty() )
{
/*
* Most existing extensions don't define exported packages, i.e. no classes are to be exposed to
* plugins, yet the components provided by the extension (e.g. artifact handlers) must be
* accessible, i.e. we still must import the extension realm into the project realm.
*/
exports = Arrays.asList( extensionRealm.getId() );
}
for ( String export : exports )
{
projectRealm.importFrom( extensionRealm, export );
}
}
DependencyFilter extensionArtifactFilter = null;
if ( !exclusions.isEmpty() )
{
extensionArtifactFilter = new ExclusionsDependencyFilter( exclusions );
}
record = projectRealmCache.put( extensionRealms, projectRealm, extensionArtifactFilter );
}
projectRealmCache.register( project, record );
return record;
}
private List<Artifact> resolveExtensionArtifacts( Plugin extensionPlugin, List<RemoteRepository> repositories,
ProjectBuildingRequest request )
throws PluginResolutionException
{
DependencyNode root =
pluginDependenciesResolver.resolve( extensionPlugin, null, null, repositories,
request.getRepositorySession() );
PreorderNodeListGenerator nlg = new PreorderNodeListGenerator();
root.accept( nlg );
return nlg.getArtifacts( false );
}
public void selectProjectRealm( MavenProject project )
{
ClassLoader projectRealm = project.getClassRealm();
if ( projectRealm == null )
{
projectRealm = classRealmManager.getCoreRealm();
}
Thread.currentThread().setContextClassLoader( projectRealm );
}
}