Package org.apache.kafka.streams.processor.internals

Class DefaultStreamPartitioner<K,V>

java.lang.Object

org.apache.kafka.streams.processor.internals.DefaultStreamPartitioner<K,V>

All Implemented Interfaces:

StreamPartitioner<K,V>

public class DefaultStreamPartitioner<K,V>
extends java.lang.Object
implements StreamPartitioner<K,V>

Constructor Summary

Constructors

Constructor	Description
DefaultStreamPartitioner(org.apache.kafka.common.serialization.Serializer<K> keySerializer, org.apache.kafka.common.Cluster cluster)

Method Summary

Modifier and Type	Method	Description
java.lang.Integer	partition(java.lang.String topic, K key, V value, int numPartitions)	Determine the partition number for a record with the given key and value and the current number of partitions.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultStreamPartitioner

public DefaultStreamPartitioner(org.apache.kafka.common.serialization.Serializer<K> keySerializer,
                                org.apache.kafka.common.Cluster cluster)

Method Detail

partition

public java.lang.Integer partition(java.lang.String topic,
                                   K key,
                                   V value,
                                   int numPartitions)

Description copied from interface: StreamPartitioner

Determine the partition number for a record with the given key and value and the current number of partitions.

Specified by:

partition in interface StreamPartitioner<K,V>

Parameters:

topic - the topic name this record is sent to

key - the key of the record

value - the value of the record

numPartitions - the total number of partitions

Returns:

an integer between 0 and numPartitions-1, or null if the default partitioning logic should be used