org.apache.flink.connector.pulsar.source.offset

Class RollbackStartOffsetInitializer

java.lang.Object

org.apache.flink.connector.pulsar.source.offset.RollbackStartOffsetInitializer

All Implemented Interfaces:

Serializable, StartOffsetInitializer

public class RollbackStartOffsetInitializer
extends Object
implements StartOffsetInitializer

An implementation of StartOffsetInitializer to rollback the offsets by a certain duration.

This implementation does not verify if data exists after the rollback as this initiliazer

Package private and should be instantiated via StartOffsetInitializer.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.connector.pulsar.source.StartOffsetInitializer

StartOffsetInitializer.CreationConfiguration

Constructor Summary

Constructors

Constructor and Description
RollbackStartOffsetInitializer(long rollbackTimeInS)

Method Summary

Modifier and Type	Method and Description
void	initializeBeforeCreation(AbstractPartition partition, StartOffsetInitializer.CreationConfiguration creationConfiguration) Initializes the offset for the given consumer configuration and partition.
Optional<String>	verifyOffset(AbstractPartition partition, Supplier<Optional<org.apache.pulsar.client.api.MessageId>> lastMessageIdFetcher, Supplier<Optional<org.apache.pulsar.client.api.Message<byte[]>>> firstMessageFetcher) Verifies if the offset was initialized correctly.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.connector.pulsar.source.StartOffsetInitializer

committedOffsets, committedOffsets, earliest, earliest, initializeAfterCreation, latest, latest, offset, offsets, offsets, rollback, timestamps

Constructor Detail

RollbackStartOffsetInitializer

public RollbackStartOffsetInitializer(long rollbackTimeInS)

Method Detail

initializeBeforeCreation

public void initializeBeforeCreation(AbstractPartition partition,
                                     StartOffsetInitializer.CreationConfiguration creationConfiguration)

Description copied from interface: StartOffsetInitializer

Initializes the offset for the given consumer configuration and partition.

Specified by:

initializeBeforeCreation in interface StartOffsetInitializer

Parameters:

partition - the partition for which the consumer is about to be created

creationConfiguration - the configuration used to create consumer

verifyOffset

public Optional<String> verifyOffset(AbstractPartition partition,
                                     Supplier<Optional<org.apache.pulsar.client.api.MessageId>> lastMessageIdFetcher,
                                     Supplier<Optional<org.apache.pulsar.client.api.Message<byte[]>>> firstMessageFetcher)

Description copied from interface: StartOffsetInitializer

Verifies if the offset was initialized correctly.

Specified by:

verifyOffset in interface StartOffsetInitializer

Returns:

an error message if no appropriate data point could be found or empty if initialization worked correctly.

See Also:

PulsarSourceOptions.VERIFY_INITIAL_OFFSETS