| 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.io.File; |
| import java.util.ArrayList; |
| 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.apache.maven.artifact.Artifact; |
| import org.apache.maven.project.ExtensionDescriptor; |
| import org.apache.maven.project.MavenProject; |
| import org.codehaus.plexus.classworlds.realm.ClassRealm; |
| import org.codehaus.plexus.classworlds.realm.NoSuchRealmException; |
| import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable; |
| |
| /** |
| * Default extension realm cache implementation. Assumes cached data does not change. |
| */ |
| @Named |
| @Singleton |
| public class DefaultExtensionRealmCache |
| implements ExtensionRealmCache, Disposable |
| { |
| /** |
| * CacheKey |
| */ |
| protected static class CacheKey |
| implements Key |
| { |
| |
| private final List<File> files; |
| |
| private final List<Long> timestamps; |
| |
| private final List<Long> sizes; |
| |
| private final List<String> ids; |
| |
| private final int hashCode; |
| |
| public CacheKey( List<Artifact> extensionArtifacts ) |
| { |
| this.files = new ArrayList<>( extensionArtifacts.size() ); |
| this.timestamps = new ArrayList<>( extensionArtifacts.size() ); |
| this.sizes = new ArrayList<>( extensionArtifacts.size() ); |
| this.ids = new ArrayList<>( extensionArtifacts.size() ); |
| |
| for ( Artifact artifact : extensionArtifacts ) |
| { |
| File file = artifact.getFile(); |
| files.add( file ); |
| timestamps.add( ( file != null ) ? Long.valueOf( file.lastModified() ) : Long.valueOf( 0 ) ); |
| sizes.add( ( file != null ) ? Long.valueOf( file.length() ) : Long.valueOf( 0 ) ); |
| ids.add( artifact.getVersion() ); |
| } |
| |
| this.hashCode = |
| 31 * files.hashCode() + 31 * ids.hashCode() + 31 * timestamps.hashCode() + 31 * sizes.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 ids.equals( other.ids ) && files.equals( other.files ) && timestamps.equals( other.timestamps ) |
| && sizes.equals( other.sizes ); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return files.toString(); |
| } |
| } |
| |
| protected final Map<Key, CacheRecord> cache = new ConcurrentHashMap<>(); |
| |
| @Override |
| public Key createKey( List<Artifact> extensionArtifacts ) |
| { |
| return new CacheKey( extensionArtifacts ); |
| } |
| |
| public CacheRecord get( Key key ) |
| { |
| return cache.get( key ); |
| } |
| |
| public CacheRecord put( Key key, ClassRealm extensionRealm, ExtensionDescriptor extensionDescriptor, |
| List<Artifact> artifacts ) |
| { |
| Objects.requireNonNull( extensionRealm, "extensionRealm cannot be null" ); |
| |
| if ( cache.containsKey( key ) ) |
| { |
| throw new IllegalStateException( "Duplicate extension realm for extension " + key ); |
| } |
| |
| CacheRecord record = new CacheRecord( extensionRealm, extensionDescriptor, artifacts ); |
| |
| 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 extension usage |
| } |
| |
| public void dispose() |
| { |
| flush(); |
| } |
| |
| } |