本文整理匯總了Java中org.apache.kafka.clients.consumer.ConsumerRecord.headers方法的典型用法代碼示例。如果您正苦於以下問題：Java ConsumerRecord.headers方法的具體用法？Java ConsumerRecord.headers怎麽用？Java ConsumerRecord.headers使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類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個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: reconsumeLater
import org.apache.kafka.clients.consumer.ConsumerRecord; //導入方法依賴的package包/類
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();
}