Package org.apache.kafka.streams.processor

Interface TopicNameExtractor<K,V>

public interface TopicNameExtractor<K,V>
An interface that allows to dynamically determine the name of the Kafka topic to send at the sink node of the topology.

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    extract(K key, V value, RecordContext recordContext)
    Extracts the topic name to send to.

  • Method Details

    • extract

      String extract(K key, V value, RecordContext recordContext)
      Extracts the topic name to send to. The topic name must already exist, since the Kafka Streams library will not try to automatically create the topic with the extracted name.
      Parameters:
      key - the record key
      value - the record value
      recordContext - current context metadata of the record
      Returns:
      the topic name this record should be sent to