org.apache.jackrabbit.oak.plugins.document.mongo

Class MongoBlobStore

java.lang.Object

org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

org.apache.jackrabbit.oak.plugins.blob.CachingBlobStore

org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore

All Implemented Interfaces:

org.apache.jackrabbit.oak.commons.cache.Cache.Backend<org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId,org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.Data>, org.apache.jackrabbit.oak.spi.blob.BlobStore, org.apache.jackrabbit.oak.spi.blob.GarbageCollectableBlobStore

public class MongoBlobStore
extends org.apache.jackrabbit.oak.plugins.blob.CachingBlobStore

Implementation of blob store for the MongoDB extending from CachingBlobStore. It saves blobs into a separate collection in MongoDB (not using GridFS) and it supports basic garbage collection. FIXME: -Do we need to create commands for retry etc.? -Not sure if this is going to work for multiple MKs talking to same MongoDB?

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId, org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.Data

Field Summary

Fields

Modifier and Type	Field and Description
static String	COLLECTION_BLOBS

Fields inherited from class org.apache.jackrabbit.oak.plugins.blob.CachingBlobStore

blobCacheSize, cache, DEFAULT_CACHE_SIZE, MEM_CACHE_NAME

Fields inherited from class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

BLOCK_SIZE_LIMIT, HASH_ALGORITHM, inUse, TYPE_DATA, TYPE_HASH

Constructor Summary

Constructors

Constructor and Description
MongoBlobStore(com.mongodb.client.MongoDatabase db) Constructs a new MongoBlobStore
MongoBlobStore(com.mongodb.client.MongoDatabase db, long cacheSize)

Method Summary

Modifier and Type	Method and Description
long	countDeleteChunks(List<String> chunkIds, long maxLastModifiedTime)
Iterator<String>	getAllChunkIds(long maxLastModifiedTime)
protected boolean	isMarkEnabled()
protected void	mark(org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId blockId)
protected byte[]	readBlockFromBackend(org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId blockId)
void	startMark()
protected void	storeBlock(byte[] digest, int level, byte[] data)
int	sweep()

Methods inherited from class org.apache.jackrabbit.oak.plugins.blob.CachingBlobStore

clearCache, getBlobCacheSize, getCacheStats

Methods inherited from class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

clearInUse, deleteChunks, getBlobId, getBlobLength, getBlockSize, getBlockSizeMin, getInputStream, getOrCreateReferenceKey, getReference, getStatsCollector, load, mark, markInUse, readBlob, resolveChunks, setBlockSize, setBlockSizeMin, setReferenceKey, setReferenceKeyEncoded, setReferenceKeyPlainText, setStatsCollector, usesBlobId, writeBlob, writeBlob, writeBlob

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COLLECTION_BLOBS

public static final String COLLECTION_BLOBS

See Also:

Constant Field Values

Constructor Detail

MongoBlobStore

public MongoBlobStore(com.mongodb.client.MongoDatabase db)

Constructs a new MongoBlobStore

Parameters:

db - The DB.

MongoBlobStore

public MongoBlobStore(com.mongodb.client.MongoDatabase db,
                      long cacheSize)

Method Detail

storeBlock

protected void storeBlock(byte[] digest,
                          int level,
                          byte[] data)
                   throws IOException

Specified by:

storeBlock in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

Throws:

IOException

readBlockFromBackend

protected byte[] readBlockFromBackend(org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId blockId)
                               throws Exception

Specified by:

readBlockFromBackend in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

Throws:

Exception

startMark

public void startMark()
               throws IOException

Specified by:

startMark in interface org.apache.jackrabbit.oak.spi.blob.GarbageCollectableBlobStore

Specified by:

startMark in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

Throws:

IOException

isMarkEnabled

protected boolean isMarkEnabled()

Specified by:

isMarkEnabled in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

mark

protected void mark(org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.BlockId blockId)
             throws Exception

Specified by:

mark in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

Throws:

Exception

sweep

public int sweep()
          throws IOException

Specified by:

sweep in interface org.apache.jackrabbit.oak.spi.blob.GarbageCollectableBlobStore

Specified by:

sweep in class org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore

Throws:

IOException

countDeleteChunks

public long countDeleteChunks(List<String> chunkIds,
                              long maxLastModifiedTime)
                       throws Exception

Throws:

Exception

getAllChunkIds

public Iterator<String> getAllChunkIds(long maxLastModifiedTime)
                                throws Exception

Throws:

Exception