cn.leancloud.kafka.consumer

Interface ConsumerRecordHandler<K,V>

Type Parameters:

K - the type of key for records consumed from Kafka

V - the type of value for records consumed from Kafka

All Known Implementing Classes:

CatchAllExceptionConsumerRecordHandler, RetriableConsumerRecordHandler

public interface ConsumerRecordHandler<K,V>

A handler to handle all the consumer records consumed from Kafka broker.

Method Summary

Modifier and Type	Method and Description
void	handleRecord(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> record) Handle a ConsumerRecord consumed from Kafka broker.

Method Detail

handleRecord

void handleRecord(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> record)

Handle a ConsumerRecord consumed from Kafka broker.

For the sake of fail fast, if any exception throws from this method, the thread for fetching records from Kafka broker will exit with an error message. This will trigger rebalances of partitions among all the consumer groups this consumer joined and let other consumer try to handle the failed and the following records.

You can consider to use RetriableConsumerRecordHandler to retry handling process automatically. Or use CatchAllExceptionConsumerRecordHandler as a safety net to handle all the failed records in the same way.

Parameters:

record - the consumed ConsumerRecord