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package org.apache.maven.plugin;
/*
* 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.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.repository.ComponentDescriptor;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.WorkspaceRepository;
/**
* Caches raw plugin descriptors. A raw plugin descriptor is a descriptor that has just been extracted from the plugin
* artifact and does not contain any runtime specific data. The cache must not be used for descriptors that hold runtime
* data like the plugin realm. <strong>Warning:</strong> This is an internal utility interface that is only public for
* technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
* prior notice.
*
* @since 3.0
* @author Benjamin Bentmann
*/
@Component( role = PluginDescriptorCache.class )
public class DefaultPluginDescriptorCache
implements PluginDescriptorCache
{
private Map<Key, PluginDescriptor> descriptors = new HashMap<Key, PluginDescriptor>( 128 );
public void flush()
{
descriptors.clear();
}
public Key createKey( Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session )
{
return new CacheKey( plugin, repositories, session );
}
public PluginDescriptor get( Key cacheKey )
{
return clone( descriptors.get( cacheKey ) );
}
public void put( Key cacheKey, PluginDescriptor pluginDescriptor )
{
descriptors.put( cacheKey, clone( pluginDescriptor ) );
}
protected static PluginDescriptor clone( PluginDescriptor original )
{
PluginDescriptor clone = null;
if ( original != null )
{
clone = new PluginDescriptor();
clone.setGroupId( original.getGroupId() );
clone.setArtifactId( original.getArtifactId() );
clone.setVersion( original.getVersion() );
clone.setGoalPrefix( original.getGoalPrefix() );
clone.setInheritedByDefault( original.isInheritedByDefault() );
clone.setName( original.getName() );
clone.setDescription( original.getDescription() );
clone.setRequiredMavenVersion( original.getRequiredMavenVersion() );
clone.setPluginArtifact( ArtifactUtils.copyArtifactSafe( original.getPluginArtifact() ) );
clone.setComponents( clone( original.getMojos(), clone ) );
clone.setId( original.getId() );
clone.setIsolatedRealm( original.isIsolatedRealm() );
clone.setSource( original.getSource() );
clone.setDependencies( original.getDependencies() );
}
return clone;
}
private static List<ComponentDescriptor<?>> clone( List<MojoDescriptor> mojos, PluginDescriptor pluginDescriptor )
{
List<ComponentDescriptor<?>> clones = null;
if ( mojos != null )
{
clones = new ArrayList<ComponentDescriptor<?>>( mojos.size() );
for ( MojoDescriptor mojo : mojos )
{
MojoDescriptor clone = mojo.clone();
clone.setPluginDescriptor( pluginDescriptor );
clones.add( clone );
}
}
return clones;
}
private static final class CacheKey
implements Key
{
private final String groupId;
private final String artifactId;
private final String version;
private final WorkspaceRepository workspace;
private final LocalRepository localRepo;
private final List<RemoteRepository> repositories;
private final int hashCode;
public CacheKey( Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session )
{
groupId = plugin.getGroupId();
artifactId = plugin.getArtifactId();
version = plugin.getVersion();
workspace = CacheUtils.getWorkspace( session );
localRepo = session.getLocalRepository();
this.repositories = new ArrayList<RemoteRepository>( repositories.size() );
for ( RemoteRepository repository : repositories )
{
if ( repository.isRepositoryManager() )
{
this.repositories.addAll( repository.getMirroredRepositories() );
}
else
{
this.repositories.add( repository );
}
}
int hash = 17;
hash = hash * 31 + groupId.hashCode();
hash = hash * 31 + artifactId.hashCode();
hash = hash * 31 + version.hashCode();
hash = hash * 31 + hash( workspace );
hash = hash * 31 + localRepo.hashCode();
hash = hash * 31 + CacheUtils.repositoriesHashCode( repositories );
this.hashCode = hash;
}
@Override
public int hashCode()
{
return hashCode;
}
@Override
public boolean equals( Object obj )
{
if ( this == obj )
{
return true;
}
if ( !( obj instanceof CacheKey ) )
{
return false;
}
CacheKey that = (CacheKey) obj;
return eq( this.artifactId, that.artifactId ) && eq( this.groupId, that.groupId )
&& eq( this.version, that.version ) && eq( this.localRepo, that.localRepo )
&& eq( this.workspace, that.workspace )
&& CacheUtils.repositoriesEquals( this.repositories, that.repositories );
}
@Override
public String toString()
{
return groupId + ':' + artifactId + ':' + version;
}
private static int hash( Object obj )
{
return obj != null ? obj.hashCode() : 0;
}
private static <T> boolean eq( T s1, T s2 )
{
return s1 != null ? s1.equals( s2 ) : s2 == null;
}
}
}
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