/*
* 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.
*/
package org.apache.jackrabbit.oak.plugins.document;
import java.io.Closeable;
import java.util.Iterator;
import org.apache.jackrabbit.oak.api.Blob;
import org.apache.jackrabbit.oak.commons.IOUtils;
import org.apache.jackrabbit.oak.plugins.blob.BlobReferenceRetriever;
import org.apache.jackrabbit.oak.plugins.blob.BlobStoreBlob;
import org.apache.jackrabbit.oak.plugins.blob.ReferenceCollector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Implementation of {@link BlobReferenceRetriever} for the DocumentNodeStore.
*/
public class DocumentBlobReferenceRetriever implements BlobReferenceRetriever {
private final Logger log = LoggerFactory.getLogger(getClass());
private final DocumentNodeStore nodeStore;
public DocumentBlobReferenceRetriever(DocumentNodeStore nodeStore) {
this.nodeStore = nodeStore;
}
@Override
public void collectReferences(ReferenceCollector collector) {
int referencesFound = 0;
Iterator<Blob> blobIterator = nodeStore.getReferencedBlobsIterator();
try {
while (blobIterator.hasNext()) {
Blob blob = blobIterator.next();
referencesFound++;
//TODO this mode would also add in memory blobId
//Would that be an issue
if (blob instanceof BlobStoreBlob) {
collector.addReference(((BlobStoreBlob) blob).getBlobId());
} else {
//TODO Should not rely on toString. Instead obtain
//secure reference and convert that to blobId using
//blobStore
collector.addReference(blob.toString());
}
}
}finally{
if(blobIterator instanceof Closeable){
IOUtils.closeQuietly((Closeable) blobIterator);
}
}
log.debug("Total blob references found (including chunk resolution) [{}]", referencesFound);
}
}