io.zeebe.logstreams.log

Class LogStreamWriterImpl

java.lang.Object

io.zeebe.logstreams.log.LogStreamWriterImpl

All Implemented Interfaces:

LogStreamRecordWriter, LogStreamWriter

public class LogStreamWriterImpl
extends Object
implements LogStreamRecordWriter

Field Summary

Fields

Modifier and Type	Field and Description
protected DirectBufferWriter	bufferWriterInstance
protected ClaimedFragment	claimedFragment
protected long	key
protected short	keyLength
protected BufferWriter	metadataWriter
protected DirectBufferWriter	metadataWriterInstance
protected boolean	positionAsKey
protected int	producerId
protected long	sourceRecordPosition
protected BufferWriter	valueWriter

Constructor Summary

Constructors

Constructor and Description
LogStreamWriterImpl()
LogStreamWriterImpl(LogStream log)

Method Summary

Modifier and Type	Method and Description
LogStreamRecordWriter	key(long key)
LogStreamRecordWriter	keyNull()
LogStreamRecordWriter	metadata(org.agrona.DirectBuffer buffer)
LogStreamRecordWriter	metadata(org.agrona.DirectBuffer buffer, int offset, int length)
LogStreamRecordWriter	metadataWriter(BufferWriter writer)
LogStreamRecordWriter	positionAsKey()
LogStreamRecordWriter	producerId(int producerId)
void	reset()
LogStreamRecordWriter	sourceRecordPosition(long position)
long	tryWrite() Attempts to write the event to the underlying stream.
LogStreamRecordWriter	value(org.agrona.DirectBuffer value)
LogStreamRecordWriter	value(org.agrona.DirectBuffer value, int valueOffset, int valueLength)
LogStreamRecordWriter	valueWriter(BufferWriter writer)
void	wrap(LogStream log)

Methods inherited from class java.lang.Object

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

Field Detail

metadataWriterInstance

protected final DirectBufferWriter metadataWriterInstance

bufferWriterInstance

protected final DirectBufferWriter bufferWriterInstance

claimedFragment

protected final ClaimedFragment claimedFragment

positionAsKey

protected boolean positionAsKey

key

protected long key

sourceRecordPosition

protected long sourceRecordPosition

producerId

protected int producerId

keyLength

protected final short keyLength

See Also:

Constant Field Values

metadataWriter

protected BufferWriter metadataWriter

valueWriter

protected BufferWriter valueWriter

Constructor Detail

LogStreamWriterImpl

public LogStreamWriterImpl()

LogStreamWriterImpl

public LogStreamWriterImpl(LogStream log)

Method Detail

wrap

public void wrap(LogStream log)

Specified by:

wrap in interface LogStreamRecordWriter

keyNull

public LogStreamRecordWriter keyNull()

Specified by:

keyNull in interface LogStreamRecordWriter

positionAsKey

public LogStreamRecordWriter positionAsKey()

Specified by:

positionAsKey in interface LogStreamRecordWriter

key

public LogStreamRecordWriter key(long key)

Specified by:

key in interface LogStreamRecordWriter

sourceRecordPosition

public LogStreamRecordWriter sourceRecordPosition(long position)

Specified by:

sourceRecordPosition in interface LogStreamRecordWriter

producerId

public LogStreamRecordWriter producerId(int producerId)

Specified by:

producerId in interface LogStreamRecordWriter

metadata

public LogStreamRecordWriter metadata(org.agrona.DirectBuffer buffer,
                                      int offset,
                                      int length)

Specified by:

metadata in interface LogStreamRecordWriter

metadata

public LogStreamRecordWriter metadata(org.agrona.DirectBuffer buffer)

Specified by:

metadata in interface LogStreamRecordWriter

metadataWriter

public LogStreamRecordWriter metadataWriter(BufferWriter writer)

Specified by:

metadataWriter in interface LogStreamRecordWriter

value

public LogStreamRecordWriter value(org.agrona.DirectBuffer value,
                                   int valueOffset,
                                   int valueLength)

Specified by:

value in interface LogStreamRecordWriter

value

public LogStreamRecordWriter value(org.agrona.DirectBuffer value)

Specified by:

value in interface LogStreamRecordWriter

valueWriter

public LogStreamRecordWriter valueWriter(BufferWriter writer)

Specified by:

valueWriter in interface LogStreamRecordWriter

reset

public void reset()

Specified by:

reset in interface LogStreamRecordWriter

tryWrite

public long tryWrite()

Description copied from interface: LogStreamWriter

Attempts to write the event to the underlying stream.

Specified by:

tryWrite in interface LogStreamWriter

Returns:

the event position or a negative value if fails to write the event