diff options
Diffstat (limited to 'framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/plugin/DefaultExtensionRealmCache.java')
-rw-r--r-- | framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/plugin/DefaultExtensionRealmCache.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/plugin/DefaultExtensionRealmCache.java b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/plugin/DefaultExtensionRealmCache.java new file mode 100644 index 00000000..c9df92c6 --- /dev/null +++ b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/plugin/DefaultExtensionRealmCache.java @@ -0,0 +1,170 @@ +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.concurrent.ConcurrentHashMap; + +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.component.annotations.Component; +import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable; + +/** + * Default extension realm cache implementation. Assumes cached data does not change. + */ +@Component( role = ExtensionRealmCache.class ) +public class DefaultExtensionRealmCache + implements ExtensionRealmCache, Disposable +{ + + 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<File>( extensionArtifacts.size() ); + this.timestamps = new ArrayList<Long>( extensionArtifacts.size() ); + this.sizes = new ArrayList<Long>( extensionArtifacts.size() ); + this.ids = new ArrayList<String>( 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<Key, CacheRecord>(); + + @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 ) + { + if ( extensionRealm == null ) + { + throw new NullPointerException(); + } + + 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.realm; + 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(); + } + +} |