reactor.kafka.samples

Class SampleScenarios.AtmostOnce

java.lang.Object

reactor.kafka.samples.SampleScenarios.AtmostOnce

Enclosing class:

SampleScenarios

public static class SampleScenarios.AtmostOnce
extends Object

This sample demonstrates a flow with at-most once delivery. A topic with replication factor one combined with a producer with acks=0 and no retries ensures that messages that could not be sent to Kafka on the first attempt are dropped. On the consumer side, KafkaReceiver.receiveAtmostOnce() commits offsets before delivery to the application to ensure that if the consumer restarts, messages are not redelivered.

Constructor Summary

Constructors

Constructor and Description
AtmostOnce(String bootstrapServers, String sourceTopic, String destTopic)

Method Summary

Modifier and Type	Method and Description
void	close()
Flux<?>	flux()
reactor.kafka.receiver.ReceiverOptions<Integer,SampleScenarios.Person>	receiverOptions()
reactor.kafka.receiver.ReceiverOptions<Integer,SampleScenarios.Person>	receiverOptions(Collection<String> topics)
void	runScenario()
reactor.kafka.sender.KafkaSender<Integer,SampleScenarios.Person>	sender(reactor.kafka.sender.SenderOptions<Integer,SampleScenarios.Person> senderOptions)
reactor.kafka.sender.SenderOptions<Integer,SampleScenarios.Person>	senderOptions()
reactor.kafka.samples.SampleScenarios.CommittableSource	source()
void	source(reactor.kafka.samples.SampleScenarios.CommittableSource source)
ProducerRecord<Integer,SampleScenarios.Person>	transform(SampleScenarios.Person p)

Methods inherited from class java.lang.Object

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

Constructor Detail

AtmostOnce

public AtmostOnce(String bootstrapServers,
                  String sourceTopic,
                  String destTopic)

Method Detail

senderOptions

public reactor.kafka.sender.SenderOptions<Integer,SampleScenarios.Person> senderOptions()

flux

public Flux<?> flux()

transform

public ProducerRecord<Integer,SampleScenarios.Person> transform(SampleScenarios.Person p)

runScenario

public void runScenario()
                 throws InterruptedException

Throws:

InterruptedException

close

public void close()

sender

public reactor.kafka.sender.KafkaSender<Integer,SampleScenarios.Person> sender(reactor.kafka.sender.SenderOptions<Integer,SampleScenarios.Person> senderOptions)

receiverOptions

public reactor.kafka.receiver.ReceiverOptions<Integer,SampleScenarios.Person> receiverOptions()

receiverOptions

public reactor.kafka.receiver.ReceiverOptions<Integer,SampleScenarios.Person> receiverOptions(Collection<String> topics)

source

public void source(reactor.kafka.samples.SampleScenarios.CommittableSource source)

source

public reactor.kafka.samples.SampleScenarios.CommittableSource source()