org.apache.flink.connector.pulsar.sink.writer.topic

Class TopicMetadataListener

java.lang.Object

org.apache.flink.connector.pulsar.sink.writer.topic.TopicMetadataListener

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable

@Internal
public class TopicMetadataListener
extends Object
implements Serializable, Closeable

We need the latest topic metadata for making sure the newly created topic partitions would be used by the Pulsar sink. This routing policy would be different compared with Pulsar Client built-in logic. We use Flink's ProcessingTimer as the executor.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TopicMetadataListener()
TopicMetadataListener(List<String> topics)

Method Summary

Modifier and Type	Method and Description
List<String>	availableTopics() Return all the available topic partitions.
void	close()
void	open(SinkConfiguration sinkConfiguration, org.apache.flink.api.common.operators.ProcessingTimeService timeService) Register the topic metadata update in process time service.

Methods inherited from class java.lang.Object

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

Constructor Detail

TopicMetadataListener

public TopicMetadataListener()

TopicMetadataListener

public TopicMetadataListener(List<String> topics)

Method Detail

open

public void open(SinkConfiguration sinkConfiguration,
                 org.apache.flink.api.common.operators.ProcessingTimeService timeService)

Register the topic metadata update in process time service.

availableTopics

public List<String> availableTopics()

Return all the available topic partitions. We would recalculate the partitions if the topic metadata has been changed. Otherwise, we would return the cached result for better performance.

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException