com.adobe.acs.commons.httpcache.store.jcr.impl.visitor.ExpiredNodesVisitor Maven / Gradle / Ivy
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Core ACS AEM Commons OSGi Bundle. Includes commons utilities.
/*
* #%L
* ACS AEM Commons Bundle
* %%
* Copyright (C) 2018 Adobe
* %%
* Licensed 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.
* #L%
*/
package com.adobe.acs.commons.httpcache.store.jcr.impl.visitor;
import com.adobe.acs.commons.httpcache.store.jcr.impl.JCRHttpCacheStoreConstants;
import java.time.Clock;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
/**
* Traversed and automatically cleans up expired cache entry nodes / bucket nodes.
*/
public class ExpiredNodesVisitor extends AbstractNodeVisitor {
Clock clock;
public ExpiredNodesVisitor( int maxLevel, long deltaSaveThreshold, Clock clock) {
super(maxLevel, deltaSaveThreshold);
this.clock = clock;
}
protected void leaving(final Node node, int level) throws RepositoryException
{
if(isCacheEntryNode(node)) {
//check and remove nodes that are expired.
checkNodeForExpiry(node);
}else if(isEmptyBucketNode(node)) {
//cleanup empty bucket nodes.
node.remove();
persistSession();
}
super.leaving(node, level);
}
private void checkNodeForExpiry(final Node node) throws RepositoryException
{
if(node.hasProperty(JCRHttpCacheStoreConstants.PN_EXPIRES_ON)){
final long expiryProperty = node.getProperty(JCRHttpCacheStoreConstants.PN_EXPIRES_ON).getLong();
if (expiryProperty < clock.instant().toEpochMilli()) {
node.remove();
persistSession();
}
}
}
}