| 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.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import javax.inject.Named; |
| import javax.inject.Singleton; |
| |
| import org.codehaus.plexus.classworlds.realm.ClassRealm; |
| import org.codehaus.plexus.classworlds.realm.NoSuchRealmException; |
| import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable; |
| import org.eclipse.aether.graph.DependencyFilter; |
| |
| /** |
| * Default project realm cache implementation. Assumes cached data does not change. |
| */ |
| @Named |
| @Singleton |
| public class DefaultProjectRealmCache |
| implements ProjectRealmCache, Disposable |
| { |
| /** |
| * CacheKey |
| */ |
| protected static class CacheKey |
| implements Key |
| { |
| |
| private final List<? extends ClassRealm> extensionRealms; |
| |
| private final int hashCode; |
| |
| public CacheKey( List<? extends ClassRealm> extensionRealms ) |
| { |
| this.extensionRealms = ( extensionRealms != null ) |
| ? Collections.unmodifiableList( extensionRealms ) |
| : Collections.emptyList(); |
| |
| this.hashCode = this.extensionRealms.hashCode(); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return hashCode; |
| } |
| |
| @Override |
| public boolean equals( Object o ) |
| { |
| if ( o == this ) |
| { |
| return true; |
| } |
| |
| if ( !( o instanceof CacheKey ) ) |
| { |
| return false; |
| } |
| |
| CacheKey other = (CacheKey) o; |
| |
| return extensionRealms.equals( other.extensionRealms ); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return extensionRealms.toString(); |
| } |
| } |
| |
| protected final Map<Key, CacheRecord> cache = new ConcurrentHashMap<>(); |
| |
| @Override |
| public Key createKey( List<? extends ClassRealm> extensionRealms ) |
| { |
| return new CacheKey( extensionRealms ); |
| } |
| |
| public CacheRecord get( Key key ) |
| { |
| return cache.get( key ); |
| } |
| |
| public CacheRecord put( Key key, ClassRealm projectRealm, DependencyFilter extensionArtifactFilter ) |
| { |
| Objects.requireNonNull( projectRealm, "projectRealm cannot be null" ); |
| |
| if ( cache.containsKey( key ) ) |
| { |
| throw new IllegalStateException( "Duplicate project realm for extensions " + key ); |
| } |
| |
| CacheRecord record = new CacheRecord( projectRealm, extensionArtifactFilter ); |
| |
| cache.put( key, record ); |
| |
| return record; |
| } |
| |
| public void flush() |
| { |
| for ( CacheRecord record : cache.values() ) |
| { |
| ClassRealm realm = record.getRealm(); |
| try |
| { |
| realm.getWorld().disposeRealm( realm.getId() ); |
| } |
| catch ( NoSuchRealmException e ) |
| { |
| // ignore |
| } |
| } |
| cache.clear(); |
| } |
| |
| public void register( MavenProject project, Key key, CacheRecord record ) |
| { |
| // default cache does not track record usage |
| } |
| |
| @Override |
| public void dispose() |
| { |
| flush(); |
| } |
| |
| } |