Created
December 26, 2017 09:47
Used to fetch the lowest offset for each partition of a topic.
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| package cn.sky_data.storeData.util; | |
| import lombok.AllArgsConstructor; | |
| import lombok.Data; | |
| import org.apache.kafka.clients.consumer.ConsumerRecords; | |
| import org.apache.kafka.clients.consumer.KafkaConsumer; | |
| import java.util.Collections; | |
| import java.util.List; | |
| import java.util.Map; | |
| import java.util.stream.Collectors; | |
| public class KafkaOffsetRangeUtil { | |
| public List<TopicPartitionInfo> fetch(Map<String, Object> config, List<String> topics) { | |
| KafkaConsumer<String, byte[]> consumer = new KafkaConsumer<>(config); | |
| consumer.subscribe(topics); | |
| ConsumerRecords<String, byte[]> records = consumer.poll(1000); | |
| return records.partitions().parallelStream().map(topicPartition -> { | |
| consumer.seekToBeginning(Collections.singletonList(topicPartition)); | |
| long offset = consumer.position(topicPartition); | |
| return new TopicPartitionInfo(topicPartition.topic(), topicPartition.partition(), offset); | |
| }).collect(Collectors.toList()); | |
| } | |
| @Data | |
| @AllArgsConstructor | |
| public static class TopicPartitionInfo { | |
| private String topic; | |
| private int partition; | |
| private long offset; | |
| } | |
| } |
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