org.apache.jackrabbit.oak.plugins.document.DocumentBlobReferenceRetriever Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
*
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* software distributed under the License is distributed on an
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*/
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.apache.jackrabbit.oak.plugins.blob.ReferencedBlob;
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 blobIterator = nodeStore.getReferencedBlobsIterator();
try {
while (blobIterator.hasNext()) {
ReferencedBlob refBlob = blobIterator.next();
Blob blob = refBlob.getBlob();
referencesFound++;
//TODO this mode would also add in memory blobId
//Would that be an issue
if (blob instanceof BlobStoreBlob) {
collector.addReference(((BlobStoreBlob) blob).getBlobId(), refBlob.getId());
} else {
//TODO Should not rely on toString. Instead obtain
//secure reference and convert that to blobId using
//blobStore
collector.addReference(blob.toString(), refBlob.getId());
}
}
}finally{
if(blobIterator instanceof Closeable){
IOUtils.closeQuietly((Closeable) blobIterator);
}
}
log.debug("Total blob references found (including chunk resolution) [{}]", referencesFound);
}
}