io.debezium.pipeline.spi

Interface OffsetContext

public interface OffsetContext

Keeps track of the current offset within the source DB's change stream. This reflects in the offset as committed to Kafka and in the source info block contained within CDC messages themselves.

Author:

Gunnar Morling

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	OffsetContext.Loader Implementations load a connector-specific offset context based on the offset values stored in Kafka.

Method Summary

Modifier and Type	Method and Description
void	event(DataCollectionId collectionId, Instant timestamp) Records the name of the collection and the timestamp of the last event
Map<String,?>	getOffset()
Map<String,?>	getPartition()
org.apache.kafka.connect.data.Struct	getSourceInfo()
org.apache.kafka.connect.data.Schema	getSourceInfoSchema()
TransactionContext	getTransactionContext() Provide a context used by TransactionMonitor so persist its internal state into offsets to survive between restarts.
boolean	isSnapshotRunning() Whether this offset indicates that an (uncompleted) snapshot is currently running or not.
void	markLastSnapshotRecord() mark current record as the last one in the snapshot
void	postSnapshotCompletion() Signals that a snapshot has been completed, which should reflect in an updated offset state.
void	preSnapshotCompletion() Signals that a snapshot will complete, which should reflect in an updated offset state.
void	preSnapshotStart() Signals that a snapshot will begin, which should reflect in an updated offset state.

Method Detail

getPartition

Map<String,?> getPartition()

getOffset

Map<String,?> getOffset()

getSourceInfoSchema

org.apache.kafka.connect.data.Schema getSourceInfoSchema()

getSourceInfo

org.apache.kafka.connect.data.Struct getSourceInfo()

isSnapshotRunning

boolean isSnapshotRunning()

Whether this offset indicates that an (uncompleted) snapshot is currently running or not.

Returns:

markLastSnapshotRecord

void markLastSnapshotRecord()

mark current record as the last one in the snapshot

preSnapshotStart

void preSnapshotStart()

Signals that a snapshot will begin, which should reflect in an updated offset state.

preSnapshotCompletion

void preSnapshotCompletion()

Signals that a snapshot will complete, which should reflect in an updated offset state.

postSnapshotCompletion

void postSnapshotCompletion()

Signals that a snapshot has been completed, which should reflect in an updated offset state.

event

void event(DataCollectionId collectionId,
           Instant timestamp)

Records the name of the collection and the timestamp of the last event

getTransactionContext

TransactionContext getTransactionContext()

Provide a context used by TransactionMonitor so persist its internal state into offsets to survive between restarts.

Returns:

transaction context