kafka RemoteLogSegmentId 源码

  • 2022-10-20
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kafka RemoteLogSegmentId 代码


 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *    http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.kafka.server.log.remote.storage;

import org.apache.kafka.common.TopicIdPartition;
import org.apache.kafka.common.Uuid;
import org.apache.kafka.common.annotation.InterfaceStability;

import java.util.Objects;

 * This class represents a universally unique identifier associated to a topic partition's log segment. This will be
 * regenerated for every attempt of copying a specific log segment in {@link RemoteStorageManager#copyLogSegmentData(RemoteLogSegmentMetadata, LogSegmentData)}.
 * Once it is stored in remote storage, it is used to access that segment later from remote log metadata storage.
public class RemoteLogSegmentId {

    private final TopicIdPartition topicIdPartition;
    private final Uuid id;

    public RemoteLogSegmentId(TopicIdPartition topicIdPartition, Uuid id) {
        this.topicIdPartition = Objects.requireNonNull(topicIdPartition, "topicIdPartition can not be null");
        this.id = Objects.requireNonNull(id, "id can not be null");

     * @return TopicIdPartition of this remote log segment.
    public TopicIdPartition topicIdPartition() {
        return topicIdPartition;

     * @return Universally Unique Id of this remote log segment.
    public Uuid id() {
        return id;

    public String toString() {
        return "RemoteLogSegmentId{" +
               "topicIdPartition=" + topicIdPartition +
               ", id=" + id +

    public boolean equals(Object o) {
        if (this == o) {
            return true;
        if (o == null || getClass() != o.getClass()) {
            return false;
        RemoteLogSegmentId that = (RemoteLogSegmentId) o;
        return Objects.equals(topicIdPartition, that.topicIdPartition) && Objects.equals(id, that.id);

    public int hashCode() {
        return Objects.hash(topicIdPartition, id);



kafka 源码目录


kafka LogSegmentData 源码

kafka RemoteLogMetadata 源码

kafka RemoteLogMetadataManager 源码

kafka RemoteLogSegmentMetadata 源码

kafka RemoteLogSegmentMetadataUpdate 源码

kafka RemoteLogSegmentState 源码

kafka RemotePartitionDeleteMetadata 源码

kafka RemotePartitionDeleteState 源码

kafka RemoteResourceNotFoundException 源码

kafka RemoteStorageException 源码

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