net.timewalker.ffmq4.storage.data.impl.journal

Class BlockBasedDataStoreJournal

java.lang.Object

net.timewalker.ffmq4.storage.data.impl.journal.BlockBasedDataStoreJournal

public final class BlockBasedDataStoreJournal
extends Object

BlockBasedDataStoreJournal

Constructor Summary

Constructors

Constructor and Description

BlockBasedDataStoreJournal(String baseName, File dataFolder, long maxJournalSize, int maxWriteBatchSize, int maxUnflushedJournalSize, int maxUncommittedStoreSize, int journalOutputBuffer, int storageSyncMethod, boolean preAllocateFiles, RandomAccessFile allocationTableRandomAccessFile, RandomAccessFile dataRandomAccessFile, DirtyBlockTable dirtyBlockTable, AsyncTaskManager asyncTaskManager) Constructor

Method Summary

Modifier and Type	Method and Description
void	close()
void	commit(SynchronizationBarrier barrier) Commit the journal (asynchronous)
void	extendStore(int blockSize, int oldBlockCount, int newBlockCount) Write some store extend operation (asynchronous)
void	flush() Flush the journal write queue (asynchronous)
protected void	flushJournal()
protected void	flushStore()
void	writeDataBlock(int blockIndex, long blockOffset, byte[] blockData) Write a data block (asynchronous)
void	writeMetaData(long metaDataOffset, int metaData) Write some metadata value (asynchronous)
void	writeMetaDataBlock(long metaDataOffset, byte[] metaData) Write some metadata block (asynchronous)

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockBasedDataStoreJournal

public BlockBasedDataStoreJournal(String baseName,
                                  File dataFolder,
                                  long maxJournalSize,
                                  int maxWriteBatchSize,
                                  int maxUnflushedJournalSize,
                                  int maxUncommittedStoreSize,
                                  int journalOutputBuffer,
                                  int storageSyncMethod,
                                  boolean preAllocateFiles,
                                  RandomAccessFile allocationTableRandomAccessFile,
                                  RandomAccessFile dataRandomAccessFile,
                                  DirtyBlockTable dirtyBlockTable,
                                  AsyncTaskManager asyncTaskManager)

Constructor

Method Detail

writeDataBlock

public void writeDataBlock(int blockIndex,
                           long blockOffset,
                           byte[] blockData)
                    throws JournalException

Write a data block (asynchronous)

Throws:

JournalException

writeMetaDataBlock

public void writeMetaDataBlock(long metaDataOffset,
                               byte[] metaData)
                        throws JournalException

Write some metadata block (asynchronous)

Throws:

JournalException

writeMetaData

public void writeMetaData(long metaDataOffset,
                          int metaData)
                   throws JournalException

Write some metadata value (asynchronous)

Throws:

JournalException

extendStore

public void extendStore(int blockSize,
                        int oldBlockCount,
                        int newBlockCount)
                 throws JournalException

Write some store extend operation (asynchronous)

Throws:

JournalException

flush

public void flush()
           throws JournalException

Flush the journal write queue (asynchronous)

Throws:

JournalException

commit

public void commit(SynchronizationBarrier barrier)
            throws JournalException

Commit the journal (asynchronous)

Throws:

JournalException

flushJournal

protected void flushJournal()

flushStore

protected void flushStore()

close

public void close()
           throws JournalException

Throws:

JournalException