tech.ydb.topic.read

Interface Message

All Known Implementing Classes:

MessageImpl

@ExperimentalApi(value="Topic service interfaces are experimental and may change without notice")
public interface Message

Author:

Nikolay Perfilov

Method Summary

Modifier and Type	Method and Description
CompletableFuture<Void>	commit() Commits this message If there was an error while committing, there is no point of retrying committing the same message: the whole PartitionSession should be shut down by that time.
Instant	getCreatedAt()
byte[]	getData()
String	getMessageGroupId()
long	getOffset()
PartitionSession	getPartitionSession()
String	getProducerId()
long	getSeqNo()
Map<String,String>	getWriteSessionMeta()
Instant	getWrittenAt()

Method Detail

getData

byte[] getData()

Returns:

Message byte data.

Throws:

DecompressionException - in case of decompression error. Raw data can be retrieved this exception

getOffset

long getOffset()

Returns:

Message offset

getSeqNo

long getSeqNo()

Returns:

Message seqNo

getCreatedAt

Instant getCreatedAt()

Returns:

Message creation time

getMessageGroupId

String getMessageGroupId()

Returns:

Message group id

getProducerId

String getProducerId()

Returns:

producer id

getWriteSessionMeta

Map<String,String> getWriteSessionMeta()

Returns:

write session metadata

getWrittenAt

Instant getWrittenAt()

Returns:

Time the message was written at

getPartitionSession

PartitionSession getPartitionSession()

Returns:

Partition session of this message

commit

CompletableFuture<Void> commit()

Commits this message If there was an error while committing, there is no point of retrying committing the same message: the whole PartitionSession should be shut down by that time. And if commit hadn't reached the server, it will resend all these messages in next PartitionSession.

Returns:

CompletableFuture that will be completed when commit confirmation from server will be received