I have a producer in a spring boot project that is producing two events to the same redis consumer group and a consumer (another spring boot project) consuming the same. The redis consumer is able to consume only one type of event. I see the below exception while consuming the 2nd type of event :-
Exception seen in consumer spring application :-
2021-01-06 19:14:22,580 ERROR [SimpleAsyncTaskExecutor-1] DefaultStreamMessageListenerContainer$LoggingErrorHandler: Unexpected error occurred in scheduled task.java.lang.IllegalArgumentException: Value must not be null! at org.springframework.util.Assert.notNull(Assert.java:198) at org.springframework.data.redis.connection.stream.Record.of(Record.java:81) at org.springframework.data.redis.connection.stream.MapRecord.toObjectRecord(MapRecord.java:147) at org.springframework.data.redis.core.StreamObjectMapper.toObjectRecord(StreamObjectMapper.java:132) at org.springframework.data.redis.core.StreamObjectMapper.map(StreamObjectMapper.java:158) at org.springframework.data.redis.core.StreamOperations.read(StreamOperations.java:377) at org.springframework.data.redis.stream.DefaultStreamMessageListenerContainer.lambda$getReadFunction$2(DefaultStreamMessageListenerContainer.java:232) at org.springframework.data.redis.stream.StreamPollTask.doLoop(StreamPollTask.java:138) at org.springframework.data.redis.stream.StreamPollTask.run(StreamPollTask.java:123) at java.lang.Thread.run(Thread.java:748)Redis Stream Task :-
@Componentpublic class RedisStreamTask<T> { @Autowired private RedisTemplate<String, Object> redisTemplate; @Async public void publish(final StreamingEvent<T> event) { final ObjectRecord<String, T> record = StreamRecords.newRecord() .ofObject(event.getMessage()) .withStreamKey(event.getKey()); final RecordId recordId = redisTemplate .opsForStream() .add(record); }}Producer in 1st spring application :-
final StreamingEvent<MyBean> streamingEvent = new StreamingEvent<>();streamingEvent.setKey("CONSUMER_GROUP_KEY");streamingEvent.setMessage(myBean);redisStreamTask.publish(streamingEvent);Consumer in 2nd spring application :-
imports...@Componentpublic class Consumer implements StreamListener<String, ObjectRecord<String, MyBean>> { private AtomicInteger atomicInteger = new AtomicInteger(0); private final Logger log = LoggerFactory.getLogger(Consumer.class); @Autowired private ReactiveRedisTemplate<String, String> redisTemplate; @Autowired public RedisConfig config; @Autowired private MyService myService; @Override public void onMessage(ObjectRecord<String, MyBean> record) { record.getValue(); tempCreateFile.log(record.getValue()); try { myService.saveEvent(record.getValue()); } catch (Exception e) { log.error("Error while storing redis events", e); } atomicInteger.incrementAndGet(); } @Scheduled(fixedRate = 10000) public void showPublishedEventsSoFar() { log.info("Total Consumed :: " + atomicInteger.get()); } @PostConstruct public void afterPropertiesSet() throws Exception { try { log.info("Create Consumer group: {}", config.getConsumerGroupName()); redisTemplate.opsForStream().createGroup(config.getStreamName(), config.getConsumerGroupName()).block(); } catch (RedisSystemException e) { if (e.getRootCause().getClass().equals(RedisBusyException.class)) { } else if (e.getRootCause().getClass().equals(RedisCommandExecutionException.class)) { log.info("STREAM - Stream does not yet exist, creating empty stream: " + config.getStreamName()); redisTemplate.opsForStream().add( config.getStreamName(), Collections.singletonMap("", "")).block(); redisTemplate.opsForStream().createGroup(config.getStreamName(), config.getConsumerGroupName()).block(); } else { e.printStackTrace(); throw e; } } }}Please let me know if any additional info is required. Any help on how to fix this issue would be grateful!