我在一个spring-boot项目中有一个producer,它为同一个redis用户组生成两个事件,另一个用户(另一个spring-boot项目)使用相同的事件。redis消费者只能消费一种类型的事件。在使用第二种类型的事件时,我看到以下异常:-
消费者spring应用程序中出现异常:-
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流任务:-
@Component
public 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);
}
}
生产商在第一个 Spring 应用:-
final StreamingEvent<MyBean> streamingEvent = new StreamingEvent<>();
streamingEvent.setKey("CONSUMER_GROUP_KEY");
streamingEvent.setMessage(myBean);
redisStreamTask.publish(streamingEvent);
第二个Spring应用中的耗电元件:-
imports...
@Component
public 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;
}
}
}
}
请让我知道如果任何其他信息是必需的。任何帮助如何解决这个问题将不胜感激!
暂无答案!
目前还没有任何答案,快来回答吧!