@Configuration
@EnableKafka
class KafkaConfig {
//consumer factory provided by Spring boot
@Bean
IntegrationFlow inboundKafkaEventFlow(ConsumerFactory consumerFactory) {
IntegrationFlows
.from(Kafka
.messageDrivenChannelAdapter(consumerFactory, "kafkaTopic")
.configureListenerContainer({ c -> c.groupId('kafka-consumer-staging') })
.id("kafkaTopicListener").autoStartup(true)
)
.channel("logChannel")
.get()
}
}
@Component
class KafkaConsumer {
@KafkaListener(topics = ['kafkaTopic'], groupId = 'kafka-consumer-staging')
void inboundKafkaEvent(String message) {
log.debug("message is {}", message)
}
}