Accessing Kafka Stream State Store with Spring

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Accessing Kafka Stream State Store with Spring



Referencing 4.2.6 of this doc https://docs.spring.io/spring-kafka/reference/htmlsingle/#kafka-streams



How do you get access to state stores using kafka stream spring support?



Without spring you could do?


StreamsBuilder builder = ...;
// Start an instance of the topology
KafkaStreams streams = new KafkaStreams(builder, config);

...

// Get the key-value store CountsKeyValueStore
ReadOnlyKeyValueStore<String, Long> keyValueStore =
streams.store("CountsKeyValueStore", QueryableStoreTypes.keyValueStore());



But I am not sure how to gain acess to KafkaStreams object.




1 Answer
1



Autowire the StreamsBuilderFactoryBean (or otherwise get a reference to it from the application context) and call getKafkaStreams().


StreamsBuilderFactoryBean


getKafkaStreams()






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