Class AbstractJournalUpdateTask

java.lang.Object

org.apache.activemq.artemis.core.journal.impl.AbstractJournalUpdateTask

All Implemented Interfaces:

JournalReaderCallback

Direct Known Subclasses:

JournalCompactor

public abstract class AbstractJournalUpdateTask
extends Object
implements JournalReaderCallback

Super class for Journal maintenances such as clean up and Compactor

Field Summary

Fields

Modifier and Type	Field	Description
protected JournalFile	currentFile
static final String	FILE_COMPACT_CONTROL
protected final SequentialFileFactory	fileFactory
protected final JournalFilesRepository	filesRepository
protected final JournalImpl	journal
protected final List<JournalFile>	newDataFiles
protected long	nextOrderingID
protected SequentialFile	sequentialFile

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractJournalUpdateTask(SequentialFileFactory fileFactory, JournalImpl journal, JournalFilesRepository filesRepository, org.apache.activemq.artemis.utils.collections.ConcurrentLongHashSet recordsSnapshot, long nextOrderingID)

Method Summary

Modifier and Type	Method	Description
protected void	addToRecordsSnaptshot(long id)
boolean	containsRecord(long id)
void	flush()	Write pending output into file
protected ActiveMQBuffer	getWritingChannel()
protected void	openFile()
static SequentialFile	readControlFile(SequentialFileFactory fileFactory, List<String> dataFiles, List<String> newFiles, List<Pair<String,String>> renameFile)
static SequentialFile	writeControlFile(SequentialFileFactory fileFactory, List<JournalFile> files, List<JournalFile> newFiles, List<Pair<String,String>> renames)
protected void	writeEncoder(JournalInternalRecord record)
protected void	writeEncoder(JournalInternalRecord record, int txcounter)

Methods inherited from class Object

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

Methods inherited from interface JournalReaderCallback

done, markAsDataFile, onReadAddRecord, onReadAddRecordTX, onReadCommitRecord, onReadDeleteRecord, onReadDeleteRecordTX, onReadEventRecord, onReadPrepareRecord, onReadRollbackRecord, onReadUpdateRecord, onReadUpdateRecordTX

Field Details

FILE_COMPACT_CONTROL

public static final String FILE_COMPACT_CONTROL

See Also:

• Constant Field Values

journal

protected final JournalImpl journal

fileFactory

protected final SequentialFileFactory fileFactory

currentFile

protected JournalFile currentFile

sequentialFile

protected SequentialFile sequentialFile

filesRepository

protected final JournalFilesRepository filesRepository

nextOrderingID

protected long nextOrderingID

newDataFiles

protected final List<JournalFile> newDataFiles

Constructor Details

AbstractJournalUpdateTask

protected AbstractJournalUpdateTask(SequentialFileFactory fileFactory,
 JournalImpl journal,
 JournalFilesRepository filesRepository,
 org.apache.activemq.artemis.utils.collections.ConcurrentLongHashSet recordsSnapshot,
 long nextOrderingID)

Method Details

writeControlFile

public static SequentialFile writeControlFile(SequentialFileFactory fileFactory,
 List<JournalFile> files,
 List<JournalFile> newFiles,
 List<Pair<String,String>> renames)
                                       throws Exception

Throws:

Exception

readControlFile

public static SequentialFile readControlFile(SequentialFileFactory fileFactory,
 List<String> dataFiles,
 List<String> newFiles,
 List<Pair<String,String>> renameFile)
                                      throws Exception

Throws:

Exception

flush

public void flush()
           throws Exception

Write pending output into file

Throws:

Exception

containsRecord

public boolean containsRecord(long id)

openFile

protected void openFile()
                 throws Exception

Throws:

Exception

addToRecordsSnaptshot

protected void addToRecordsSnaptshot(long id)

getWritingChannel

protected ActiveMQBuffer getWritingChannel()

writeEncoder

protected void writeEncoder(JournalInternalRecord record)
                     throws Exception

Throws:

Exception

writeEncoder

protected void writeEncoder(JournalInternalRecord record,
 int txcounter)
                     throws Exception

Throws:

Exception