Package org.apache.flink.connector.kafka.sink

Class DefaultKafkaSinkContext

java.lang.Object

org.apache.flink.connector.kafka.sink.DefaultKafkaSinkContext

All Implemented Interfaces:

KafkaRecordSerializationSchema.KafkaSinkContext

public class DefaultKafkaSinkContext
extends Object
implements KafkaRecordSerializationSchema.KafkaSinkContext

Context providing information to assist constructing a ProducerRecord.

Constructor Summary

Constructors

Constructor	Description
DefaultKafkaSinkContext(int subtaskId, int numberOfParallelInstances, Properties kafkaProducerConfig)

Method Summary

Modifier and Type	Method	Description
int	getNumberOfParallelInstances()
int	getParallelInstanceId()	Get the ID of the subtask the KafkaSink is running on.
int[]	getPartitionsForTopic(String topic)	For a given topic id retrieve the available partitions.

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultKafkaSinkContext

public DefaultKafkaSinkContext(int subtaskId,
 int numberOfParallelInstances,
 Properties kafkaProducerConfig)

Method Details

getParallelInstanceId

public int getParallelInstanceId()

Description copied from interface: KafkaRecordSerializationSchema.KafkaSinkContext

Get the ID of the subtask the KafkaSink is running on. The numbering starts from 0 and goes up to parallelism-1. (parallelism as returned by KafkaRecordSerializationSchema.KafkaSinkContext.getNumberOfParallelInstances()

Specified by:

getParallelInstanceId in interface KafkaRecordSerializationSchema.KafkaSinkContext

Returns:

ID of subtask

getNumberOfParallelInstances

public int getNumberOfParallelInstances()

Specified by:

getNumberOfParallelInstances in interface KafkaRecordSerializationSchema.KafkaSinkContext

Returns:

number of parallel KafkaSink tasks.

getPartitionsForTopic

public int[] getPartitionsForTopic(String topic)

Description copied from interface: KafkaRecordSerializationSchema.KafkaSinkContext

For a given topic id retrieve the available partitions.

After the first retrieval the returned partitions are cached. If the partitions are updated the job has to be restarted to make the change visible.

Specified by:

getPartitionsForTopic in interface KafkaRecordSerializationSchema.KafkaSinkContext

Parameters:

topic - kafka topic with partitions

Returns:

the ids of the currently available partitions