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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.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.component.annotations.Component;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.WorkspaceRepository;
/**
* @author Igor Fedorenko
* @author Benjamin Bentmann
*/
@Component( role = PluginArtifactsCache.class )
public class DefaultPluginArtifactsCache
implements PluginArtifactsCache
{
protected static class CacheKey
implements Key
{
private final Plugin plugin;
private final WorkspaceRepository workspace;
private final LocalRepository localRepo;
private final List<RemoteRepository> repositories;
private final DependencyFilter filter;
private final int hashCode;
public CacheKey( Plugin plugin, DependencyFilter extensionFilter, List<RemoteRepository> repositories,
RepositorySystemSession session )
{
this.plugin = plugin.clone();
workspace = CacheUtils.getWorkspace( session );
this.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 );
}
}
this.filter = extensionFilter;
int hash = 17;
hash = hash * 31 + CacheUtils.pluginHashCode( plugin );
hash = hash * 31 + hash( workspace );
hash = hash * 31 + hash( localRepo );
hash = hash * 31 + CacheUtils.repositoriesHashCode( repositories );
hash = hash * 31 + hash( extensionFilter );
this.hashCode = hash;
}
@Override
public String toString()
{
return plugin.getId();
}
@Override
public int hashCode()
{
return hashCode;
}
private static int hash( Object obj )
{
return obj != null ? obj.hashCode() : 0;
}
@Override
public boolean equals( Object o )
{
if ( o == this )
{
return true;
}
if ( !( o instanceof CacheKey ) )
{
return false;
}
CacheKey that = (CacheKey) o;
return CacheUtils.pluginEquals( plugin, that.plugin ) && eq( workspace, that.workspace )
&& eq( localRepo, that.localRepo ) && CacheUtils.repositoriesEquals( repositories, that.repositories )
&& eq( filter, that.filter );
}
private static <T> boolean eq( T s1, T s2 )
{
return s1 != null ? s1.equals( s2 ) : s2 == null;
}
}
protected final Map<Key, CacheRecord> cache = new ConcurrentHashMap<Key, CacheRecord>();
public Key createKey( Plugin plugin, DependencyFilter extensionFilter, List<RemoteRepository> repositories,
RepositorySystemSession session )
{
return new CacheKey( plugin, extensionFilter, repositories, session );
}
public CacheRecord get( Key key )
throws PluginResolutionException
{
CacheRecord cacheRecord = cache.get( key );
if ( cacheRecord != null && cacheRecord.exception != null )
{
throw cacheRecord.exception;
}
return cacheRecord;
}
public CacheRecord put( Key key, List<Artifact> pluginArtifacts )
{
if ( pluginArtifacts == null )
{
throw new NullPointerException();
}
assertUniqueKey( key );
CacheRecord record =
new CacheRecord( Collections.unmodifiableList( new ArrayList<Artifact>( pluginArtifacts ) ) );
cache.put( key, record );
return record;
}
protected void assertUniqueKey( Key key )
{
if ( cache.containsKey( key ) )
{
throw new IllegalStateException( "Duplicate artifact resolution result for plugin " + key );
}
}
public CacheRecord put( Key key, PluginResolutionException exception )
{
if ( exception == null )
{
throw new NullPointerException();
}
assertUniqueKey( key );
CacheRecord record = new CacheRecord( exception );
cache.put( key, record );
return record;
}
public void flush()
{
cache.clear();
}
protected static int pluginHashCode( Plugin plugin )
{
return CacheUtils.pluginHashCode( plugin );
}
protected static boolean pluginEquals( Plugin a, Plugin b )
{
return CacheUtils.pluginEquals( a, b );
}
public void register( MavenProject project, Key cacheKey, CacheRecord record )
{
// default cache does not track record usage
}
}
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