本文整理汇总了Java中org.apache.kafka.clients.consumer.ConsumerRecord.headers方法的典型用法代码示例。如果您正苦于以下问题：Java ConsumerRecord.headers方法的具体用法？Java ConsumerRecord.headers怎么用？Java ConsumerRecord.headers使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.kafka.clients.consumer.ConsumerRecord的用法示例。
在下文中一共展示了ConsumerRecord.headers方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: reconsumeLater
import org.apache.kafka.clients.consumer.ConsumerRecord; //导入方法依赖的package包/类
private void reconsumeLater(ConsumerRecord<String, byte[]> consumeRecord) throws InterruptedException, ExecutionException {
// add all header to headList except RETRY_COUNT
Headers headers = consumeRecord.headers();
List<Header> headerList = new ArrayList<Header>(8);
Iterator<Header> iterator = headers.iterator();
Integer retryCount = -1;
boolean hasOrignalHeader = false;
while (iterator.hasNext()) {
Header next = iterator.next();
if (next.key().equals(RETRY_COUNT_KEY)) {
retryCount = serializer.deserialize(next.value());
continue;
}
if(next.key().equals(ORGINAL_TOPIC)){
hasOrignalHeader = true;
}
headerList.add(next);
}
// add RETRY_COUNT to header
retryCount++;
headerList.add(new RecordHeader(RETRY_COUNT_KEY, serializer.serialization(retryCount)));
if(!hasOrignalHeader){
headerList.add(new RecordHeader(ORGINAL_TOPIC, serializer.serialization(consumeRecord.topic())));
}
// send message to corresponding queue according to retry times
String retryTopic = calcRetryTopic(consumeRecord.topic(), retryCount);
ProducerRecord<String, byte[]> record = new ProducerRecord<>(retryTopic,
consumeRecord.partition() % retryQueuePartitionCount.get(retryTopic), null, consumeRecord.key(),
consumeRecord.value(), headerList);
Future<RecordMetadata> publishKafkaMessage = retryQueueMsgProducer.publishKafkaMessage(record);
publishKafkaMessage.get();
}