Package org.apache.bookkeeper.bookie.storage.ldb

Class EntryLocationIndex

java.lang.Object

org.apache.bookkeeper.bookie.storage.ldb.EntryLocationIndex

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class EntryLocationIndex
extends java.lang.Object
implements java.io.Closeable

Maintains an index of the entry locations in the EntryLogger.

For each ledger multiple entries are stored in the same "record", represented by the LedgerIndexPage class.

Constructor Summary

Constructors

Constructor	Description
EntryLocationIndex(ServerConfiguration conf, KeyValueStorageFactory storageFactory, java.lang.String basePath, StatsLogger stats)

Method Summary

Modifier and Type	Method	Description
void	addLocation(long ledgerId, long entryId, long location)
void	addLocation(KeyValueStorage.Batch batch, long ledgerId, long entryId, long location)
void	close()
void	compact()
void	delete(long ledgerId)
java.lang.String	getEntryLocationDBPath()
long	getLastEntryInLedger(long ledgerId)
long	getLocation(long ledgerId, long entryId)
boolean	isCompacting()
KeyValueStorage.Batch	newBatch()
void	removeOffsetFromDeletedLedgers()
void	updateLocations(java.lang.Iterable<EntryLocation> newLocations)

Methods inherited from class java.lang.Object

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

Constructor Detail

EntryLocationIndex

public EntryLocationIndex(ServerConfiguration conf,
                          KeyValueStorageFactory storageFactory,
                          java.lang.String basePath,
                          StatsLogger stats)
                   throws java.io.IOException

Throws:

java.io.IOException

Method Detail

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException

getLocation

public long getLocation(long ledgerId,
                        long entryId)
                 throws java.io.IOException

Throws:

java.io.IOException

getLastEntryInLedger

public long getLastEntryInLedger(long ledgerId)
                          throws java.io.IOException

Throws:

java.io.IOException

addLocation

public void addLocation(long ledgerId,
                        long entryId,
                        long location)
                 throws java.io.IOException

Throws:

java.io.IOException

newBatch

public KeyValueStorage.Batch newBatch()

addLocation

public void addLocation(KeyValueStorage.Batch batch,
                        long ledgerId,
                        long entryId,
                        long location)
                 throws java.io.IOException

Throws:

java.io.IOException

updateLocations

public void updateLocations(java.lang.Iterable<EntryLocation> newLocations)
                     throws java.io.IOException

Throws:

java.io.IOException

delete

public void delete(long ledgerId)
            throws java.io.IOException

Throws:

java.io.IOException

getEntryLocationDBPath

public java.lang.String getEntryLocationDBPath()

compact

public void compact()
             throws java.io.IOException

Throws:

java.io.IOException

isCompacting

public boolean isCompacting()

removeOffsetFromDeletedLedgers

public void removeOffsetFromDeletedLedgers()
                                    throws java.io.IOException

Throws:

java.io.IOException