Package io.confluent.parallelconsumer.offsets

Class RunLengthEncoder

java.lang.Object

io.confluent.parallelconsumer.offsets.OffsetEncoder

io.confluent.parallelconsumer.offsets.RunLengthEncoder

public class RunLengthEncoder
extends OffsetEncoder

RunLength encoder that leverages the nature of this system.

One such nature is that gaps between completed offsets get encoded as succeeded offsets. This doesn't matter because they don't exist and we'll neve see them (they no longer exist in the source partition).

Constructor Summary

Constructors

Constructor	Description
RunLengthEncoder(OffsetSimultaneousEncoder offsetSimultaneousEncoder, OffsetEncoding.Version newVersion)

Method Summary

Modifier and Type	Method	Description
List<Long>	calculateSucceededActualOffsets(long originalBaseOffset)
void	encodeCompletedOffset(int rangeIndex)
void	encodeIncompleteOffset(int rangeIndex)
protected byte[]	getEncodedBytes()
int	getEncodedSize()
protected OffsetEncoding	getEncodingType()
protected OffsetEncoding	getEncodingTypeCompressed()
List<Integer>	getRunLengthEncodingIntegers()
byte[]	serialise()

Methods inherited from class java.lang.Object

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

Constructor Details

RunLengthEncoder

public RunLengthEncoder(OffsetSimultaneousEncoder offsetSimultaneousEncoder,
 OffsetEncoding.Version newVersion)

Method Details

getEncodingType

protected OffsetEncoding getEncodingType()

Specified by:

getEncodingType in class OffsetEncoder

getEncodingTypeCompressed

protected OffsetEncoding getEncodingTypeCompressed()

Specified by:

getEncodingTypeCompressed in class OffsetEncoder

encodeIncompleteOffset

public void encodeIncompleteOffset(int rangeIndex)

encodeCompletedOffset

public void encodeCompletedOffset(int rangeIndex)

serialise

public byte[] serialise()
                 throws EncodingNotSupportedException

Throws:

EncodingNotSupportedException

getEncodedSize

public int getEncodedSize()

getEncodedBytes

protected byte[] getEncodedBytes()

Specified by:

getEncodedBytes in class OffsetEncoder

calculateSucceededActualOffsets

public List<Long> calculateSucceededActualOffsets(long originalBaseOffset)

Returns:

the offsets which are succeeded

getRunLengthEncodingIntegers

public List<Integer> getRunLengthEncodingIntegers()