Package org.apache.jackrabbit.oak.segment.file

Class FileStoreStats

java.lang.Object

org.apache.jackrabbit.oak.segment.file.FileStoreStats

All Implemented Interfaces:

FileStoreStatsMBean, SegmentNotFoundExceptionListener, FileStoreMonitor

public class FileStoreStats
extends Object
implements FileStoreStatsMBean, FileStoreMonitor, SegmentNotFoundExceptionListener

Field Summary

Fields

Modifier and Type	Field	Description
static final String	JOURNAL_WRITES
static final String	SEGMENT_REPO_SIZE
static final String	SEGMENT_WRITES

Fields inherited from interface org.apache.jackrabbit.oak.segment.file.FileStoreStatsMBean

TYPE

Fields inherited from interface org.apache.jackrabbit.oak.segment.SegmentNotFoundExceptionListener

IGNORE_SNFE, LOG_SNFE

Constructor Summary

Constructors

Constructor	Description
FileStoreStats(StatisticsProvider statisticsProvider, FileStore store, long initialSize)

Method Summary

Modifier and Type	Method	Description
String	fileStoreInfoAsString()
void	flushed()	Notifies the monitor when journal data is flushed to disk.
long	getApproximateSize()
CompositeData	getJournalWriteStatsAsCompositeData()
long	getJournalWriteStatsAsCount()
@NotNull CompositeData	getRepositorySize()
int	getSegmentCount()
int	getTarFileCount()
@NotNull CompositeData	getWriteStats()
void	init(long initialSize)
void	notify(@NotNull SegmentId id, @NotNull SegmentNotFoundException snfe)	Notification about SegmentNotFoundException thrown by the underlying store in a meaningful way.
void	reclaimed(long size)	Notifies the monitor when memory is reclaimed
void	written(long delta)	Notifies the monitor when data is written

Methods inherited from class java.lang.Object

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

Field Details

SEGMENT_REPO_SIZE

public static final String SEGMENT_REPO_SIZE

See Also:

• Constant Field Values

SEGMENT_WRITES

public static final String SEGMENT_WRITES

See Also:

• Constant Field Values

JOURNAL_WRITES

public static final String JOURNAL_WRITES

See Also:

• Constant Field Values

Constructor Details

FileStoreStats

public FileStoreStats(StatisticsProvider statisticsProvider,
 FileStore store,
 long initialSize)

Method Details

init

public void init(long initialSize)

notify

public void notify(@NotNull
 @NotNull SegmentId id,
 @NotNull
 @NotNull SegmentNotFoundException snfe)

Description copied from interface: SegmentNotFoundExceptionListener

Notification about SegmentNotFoundException thrown by the underlying store in a meaningful way. E.g. by logging it.

Specified by:

notify in interface SegmentNotFoundExceptionListener

Parameters:

id - the segment id of the offending Segment

snfe - the raised exception

written

public void written(long delta)

Description copied from interface: FileStoreMonitor

Notifies the monitor when data is written

Specified by:

written in interface FileStoreMonitor

Parameters:

delta - number of bytes written

reclaimed

public void reclaimed(long size)

Description copied from interface: FileStoreMonitor

Notifies the monitor when memory is reclaimed

Specified by:

reclaimed in interface FileStoreMonitor

Parameters:

size - number of bytes reclaimed

flushed

public void flushed()

Description copied from interface: FileStoreMonitor

Notifies the monitor when journal data is flushed to disk.

Specified by:

flushed in interface FileStoreMonitor

getApproximateSize

public long getApproximateSize()

Specified by:

getApproximateSize in interface FileStoreStatsMBean

getTarFileCount

public int getTarFileCount()

Specified by:

getTarFileCount in interface FileStoreStatsMBean

Returns:

the number of tar files in the segment store

getSegmentCount

public int getSegmentCount()

Specified by:

getSegmentCount in interface FileStoreStatsMBean

Returns:

the number of segments in the segment store

getWriteStats

@NotNull
public @NotNull CompositeData getWriteStats()

Specified by:

getWriteStats in interface FileStoreStatsMBean

Returns:

time series of the writes to repository

getRepositorySize

@NotNull
public @NotNull CompositeData getRepositorySize()

Specified by:

getRepositorySize in interface FileStoreStatsMBean

Returns:

time series of the writes to repository

fileStoreInfoAsString

public String fileStoreInfoAsString()

Specified by:

fileStoreInfoAsString in interface FileStoreStatsMBean

getJournalWriteStatsAsCount

public long getJournalWriteStatsAsCount()

Specified by:

getJournalWriteStatsAsCount in interface FileStoreStatsMBean

Returns:

count of the writes to journal

getJournalWriteStatsAsCompositeData

public CompositeData getJournalWriteStatsAsCompositeData()

Specified by:

getJournalWriteStatsAsCompositeData in interface FileStoreStatsMBean

Returns:

time series of the writes to journal