Package org.apache.activemq.artemis.jdbc.store.file

Class JDBCSequentialFileFactory

java.lang.Object

org.apache.activemq.artemis.jdbc.store.file.JDBCSequentialFileFactory

All Implemented Interfaces:

SequentialFileFactory, ActiveMQComponent

public class JDBCSequentialFileFactory
extends Object
implements SequentialFileFactory, ActiveMQComponent

Constructor Summary

Constructors

Constructor	Description
JDBCSequentialFileFactory(JDBCConnectionProvider connectionProvider, SQLProvider sqlProvider, Executor executor, ScheduledExecutorService scheduledExecutorService, long syncDelay, IOCriticalErrorListener criticalErrorListener)

Method Summary

Modifier and Type	Method	Description
void	activateBuffer(SequentialFile file)
ByteBuffer	allocateDirectBuffer(int size)	used for cases where you need direct buffer outside of the journal context.
int	calculateBlockSize(int bytes)
void	clearBuffer(ByteBuffer buffer)
void	createDirs()	Creates the directory if it does not exist yet.
SequentialFile	createSequentialFile(String fileName)
void	deactivateBuffer()
void	destroy()
void	flush()
int	getAlignment()
long	getBufferSize()
JDBCSequentialFileFactoryDriver	getDbDriver()
File	getDirectory()
String	getDirectoryName()
int	getMaxIO()
int	getNumberOfOpenFiles()
boolean	isDatasync()
boolean	isStarted()
boolean	isSupportsCallbacks()
List<String>	listFiles(String extension)	Lists files that end with the given extension.
ByteBuffer	newBuffer(int size)	Note: You need to release the buffer if is used for reading operations.
void	onIOError(Throwable exception, String message, String file)	The SequentialFile will call this method when a disk IO Error happens during the live phase.
void	releaseBuffer(ByteBuffer buffer)
void	releaseDirectBuffer(ByteBuffer buffer)	used for cases where you need direct buffer outside of the journal context.
void	sequentialFileClosed(SequentialFile file)
JDBCSequentialFileFactory	setAlignment(int alignment)
SequentialFileFactory	setDatasync(boolean enabled)
void	start()
void	stop()
boolean	supportsIndividualContext()	Only JDBC supports individual context.
ByteBuffer	wrapBuffer(byte[] bytes)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.artemis.core.server.ActiveMQComponent

asyncStop

Methods inherited from interface org.apache.activemq.artemis.core.io.SequentialFileFactory

createSequentialFile, getCriticalAnalyzer, getCriticalErrorListener, isSyncSupported, newBuffer, onIOError, onIOError, setCriticalErrorListener

Constructor Details

JDBCSequentialFileFactory

public JDBCSequentialFileFactory(JDBCConnectionProvider connectionProvider,
 SQLProvider sqlProvider,
 Executor executor,
 ScheduledExecutorService scheduledExecutorService,
 long syncDelay,
 IOCriticalErrorListener criticalErrorListener)
                          throws Exception

Throws:

Exception

Method Details

supportsIndividualContext

public boolean supportsIndividualContext()

Description copied from interface: SequentialFileFactory

Only JDBC supports individual context. Meaning for Files we need to use the Sync scheduler. for JDBC we need to use a callback from the JDBC completion thread to complete the IOContexts.

Specified by:

supportsIndividualContext in interface SequentialFileFactory

getDbDriver

public JDBCSequentialFileFactoryDriver getDbDriver()

setDatasync

public SequentialFileFactory setDatasync(boolean enabled)

Specified by:

setDatasync in interface SequentialFileFactory

isDatasync

public boolean isDatasync()

Specified by:

isDatasync in interface SequentialFileFactory

getBufferSize

public long getBufferSize()

Specified by:

getBufferSize in interface SequentialFileFactory

start

public void start()

Specified by:

start in interface ActiveMQComponent

Specified by:

start in interface SequentialFileFactory

stop

public void stop()

Specified by:

stop in interface ActiveMQComponent

Specified by:

stop in interface SequentialFileFactory

createSequentialFile

public SequentialFile createSequentialFile(String fileName)

Specified by:

createSequentialFile in interface SequentialFileFactory

sequentialFileClosed

public void sequentialFileClosed(SequentialFile file)

getNumberOfOpenFiles

public int getNumberOfOpenFiles()

getMaxIO

public int getMaxIO()

Specified by:

getMaxIO in interface SequentialFileFactory

listFiles

public List<String> listFiles(String extension)
                       throws Exception

Description copied from interface: SequentialFileFactory

Lists files that end with the given extension.

This method inserts a ".' before the extension.

Specified by:

listFiles in interface SequentialFileFactory

Throws:

Exception

isSupportsCallbacks

public boolean isSupportsCallbacks()

Specified by:

isSupportsCallbacks in interface SequentialFileFactory

onIOError

public void onIOError(Throwable exception,
 String message,
 String file)

Description copied from interface: SequentialFileFactory

The SequentialFile will call this method when a disk IO Error happens during the live phase.

Specified by:

onIOError in interface SequentialFileFactory

allocateDirectBuffer

public ByteBuffer allocateDirectBuffer(int size)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

Specified by:

allocateDirectBuffer in interface SequentialFileFactory

releaseDirectBuffer

public void releaseDirectBuffer(ByteBuffer buffer)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

Specified by:

releaseDirectBuffer in interface SequentialFileFactory

newBuffer

public ByteBuffer newBuffer(int size)

Description copied from interface: SequentialFileFactory

Note: You need to release the buffer if is used for reading operations. You don't need to do it if using writing operations (AIO Buffer Lister will take of writing operations)

Specified by:

newBuffer in interface SequentialFileFactory

Returns:

the allocated ByteBuffer

clearBuffer

public void clearBuffer(ByteBuffer buffer)

Specified by:

clearBuffer in interface SequentialFileFactory

wrapBuffer

public ByteBuffer wrapBuffer(byte[] bytes)

Specified by:

wrapBuffer in interface SequentialFileFactory

getAlignment

public int getAlignment()

Specified by:

getAlignment in interface SequentialFileFactory

setAlignment

public JDBCSequentialFileFactory setAlignment(int alignment)

Specified by:

setAlignment in interface SequentialFileFactory

calculateBlockSize

public int calculateBlockSize(int bytes)

Specified by:

calculateBlockSize in interface SequentialFileFactory

deactivateBuffer

public void deactivateBuffer()

Specified by:

deactivateBuffer in interface SequentialFileFactory

releaseBuffer

public void releaseBuffer(ByteBuffer buffer)

Specified by:

releaseBuffer in interface SequentialFileFactory

activateBuffer

public void activateBuffer(SequentialFile file)

Specified by:

activateBuffer in interface SequentialFileFactory

getDirectory

public File getDirectory()

Specified by:

getDirectory in interface SequentialFileFactory

getDirectoryName

public String getDirectoryName()

Specified by:

getDirectoryName in interface SequentialFileFactory

isStarted

public boolean isStarted()

Specified by:

isStarted in interface ActiveMQComponent

createDirs

public void createDirs()
                throws Exception

Description copied from interface: SequentialFileFactory

Creates the directory if it does not exist yet.

Specified by:

createDirs in interface SequentialFileFactory

Throws:

Exception

flush

public void flush()

Specified by:

flush in interface SequentialFileFactory

destroy

public void destroy()
             throws SQLException

Throws:

SQLException