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/*******************************************************************************
* Copyright (c) 2014 Takari, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Takari, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.core.internal.project;
import java.io.File;
import java.util.HashSet;
import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
import org.eclipse.aether.RepositoryCache;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RepositoryPolicy;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.codehaus.plexus.classworlds.realm.NoSuchRealmException;
import org.apache.maven.project.MavenProject;
import org.eclipse.m2e.core.internal.embedder.MavenExecutionContext;
/**
* @since 1.6
*/
abstract class ProjectCachePlunger<Key> {
private final Logger log = LoggerFactory.getLogger(getClass());
final Multimap<File, Key> projectKeys = HashMultimap.create();
final Multimap<Key, File> keyProjects = HashMultimap.create();
public void register(MavenProject project, Key cacheKey) {
// project.file is null for parent pom.xml resolved from repositories
File file = project.getFile();
if(file != null) {
projectKeys.put(file, cacheKey);
keyProjects.put(cacheKey, file);
}
}
public Set<File> removeProject(File pom, boolean forceDependencyUpdate) {
RepositorySystemSession session = MavenExecutionContext.getThreadContext().getRepositorySession();
RepositoryCache sessionCache = session.getCache();
final Set<File> affectedProjects = new HashSet<>();
for(Key cacheKey : projectKeys.removeAll(pom)) {
keyProjects.remove(cacheKey, pom);
if(forceDependencyUpdate && RepositoryPolicy.UPDATE_POLICY_ALWAYS.equals(session.getUpdatePolicy())
&& sessionCache.get(session, cacheKey) == null) {
sessionCache.put(session, cacheKey, Boolean.TRUE);
for(File affectedPom : keyProjects.removeAll(cacheKey)) {
affectedProjects.add(affectedPom);
projectKeys.remove(affectedPom, cacheKey);
}
}
if(!keyProjects.containsKey(cacheKey)) {
flush(cacheKey);
log.debug("Flushed cache entry for {}", cacheKey);
}
}
return affectedProjects;
}
protected void disposeClassRealm(ClassRealm realm) {
try {
realm.getWorld().disposeRealm(realm.getId());
} catch(NoSuchRealmException e) {
// ignore
}
}
protected abstract void flush(Key cacheKey);
public void flush() {
projectKeys.clear();
keyProjects.clear();
}
}
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