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/*******************************************************************************
* Copyright (c) 2007, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.garbagecollector;
import java.util.*;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.equinox.internal.p2.core.helpers.Tracing;
import org.eclipse.equinox.p2.metadata.IArtifactKey;
import org.eclipse.equinox.p2.query.*;
import org.eclipse.equinox.p2.repository.artifact.IArtifactRepository;
/**
* Given a MarkSet, the CoreGarbageCollector removes any IArtifactDescriptors which
* are not mapped to be an IArtifactKey in the MarkSet.
*/
public class CoreGarbageCollector {
/**
* When set to true, information will be logged every time an artifact is removed
*/
static boolean debugMode = false;
/**
* Given a list of IArtifactKeys and an IArtifactRepository, removes all artifacts
* in aRepository that are not mapped to by an IArtifactKey in markSet
*/
public synchronized void clean(IArtifactKey[] markSet, final IArtifactRepository aRepository) {
Set<IArtifactKey> set = new HashSet<>(Arrays.asList(markSet));
//this query will match all artifact keys that are not in the given set
IQuery<IArtifactKey> query = QueryUtil.createQuery(IArtifactKey.class, "unique($0)", set); //$NON-NLS-1$
final IQueryResult<IArtifactKey> inactive = aRepository.query(query, null);
aRepository.executeBatch(monitor -> {
for (Iterator<IArtifactKey> iterator = inactive.iterator(); iterator.hasNext();) {
IArtifactKey key = iterator.next();
aRepository.removeDescriptor(key, new NullProgressMonitor());
if (debugMode) {
Tracing.debug("Key removed:" + key); //$NON-NLS-1$
}
}
}, new NullProgressMonitor());
}
/*
* If set to true, debug mode will log information about each artifact deleted by the CoreGarbageCollector
* @param inDebugMode
*/
public static void setDebugMode(boolean inDebugMode) {
debugMode = inDebugMode;
}
}
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