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我正在建设一个春季卡夫卡消费者。我已经设置了重试机制。重试完毕后,我想将失败的消息推送给死信主题。Kafka Consumer - 收听方收到的参数恢复方法
Listen方法具有以下参数
public void listen(@Payload Map<String, Object> conciseMap,
@Header(KafkaHeaders.RECEIVED_PARTITION_ID) int partition,
Acknowledgment ack) throws JsonProcessingException {
作为恢复方法的一部分,我想取conciseMap输入到听者的地图或者是由我的主题接收到的原始信息传递。有没有办法做到这一点?
@Bean
public ConcurrentKafkaListenerContainerFactory<String, Map<String, Object>> kafkaListenerContainerFactory() {
ConcurrentKafkaListenerContainerFactory<String, Map<String, Object>> factory = new ConcurrentKafkaListenerContainerFactory<>();
factory.setConcurrency(conncurrency);
factory.setConsumerFactory(consumerFactory());
factory.setRetryTemplate(retryTemplate());
factory.setRecoveryCallback(new RecoveryCallback<Object>() {
@Override
public Object recover(RetryContext context) throws Exception {
// TODO Auto-generated method stub
logger.debug(" In recovery callback method !!");
((Acknowledgment)context.getAttribute(RetryingMessageListenerAdapter.CONTEXT_ACKNOWLEDGMENT)).acknowledge();
return null;
}
});
factory.getContainerProperties().setAckMode(AckMode.MANUAL);
return factory;
}
factory.getContainerProperties().setAckMode(AckMode.MANUAL);
return factory;
}
/*
* Retry template.
*/
protected RetryPolicy retryPolicy() {
SimpleRetryPolicy policy = new SimpleRetryPolicy(maxRetryAttempts, retryableExceptions);
return policy;
}
protected BackOffPolicy backOffPolicy() {
ExponentialBackOffPolicy policy = new ExponentialBackOffPolicy();
policy.setInitialInterval(initialRetryInterval);
policy.setMultiplier(retryMultiplier);
return policy;
}
protected RetryTemplate retryTemplate() {
RetryTemplate template = new RetryTemplate();
template.setRetryPolicy(retryPolicy());
template.setBackOffPolicy(backOffPolicy());
return template;
}
}
由于阿尔乔姆。 ConsumerRecord.value是否提供我们在侦听器方法中获得的字节? –
M-m-m。可能。这是提供'Deserializer'的结果 –