kafka RemoteLogSegmentMetadataUpdate 源码

  • 2022-10-20
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kafka RemoteLogSegmentMetadataUpdate 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.annotation.InterfaceStability;

import java.util.Objects;

 * It describes the metadata update about the log segment in the remote storage. This is currently used to update the
 * state of the remote log segment by using {@link RemoteLogMetadataManager#updateRemoteLogSegmentMetadata(RemoteLogSegmentMetadataUpdate)}.
 * This also includes the timestamp of this event.
public class RemoteLogSegmentMetadataUpdate extends RemoteLogMetadata {

     * Universally unique remote log segment id.
    private final RemoteLogSegmentId remoteLogSegmentId;

     * It indicates the state in which the action is executed on this segment.
    private final RemoteLogSegmentState state;

     * @param remoteLogSegmentId Universally unique remote log segment id.
     * @param eventTimestampMs   Epoch time in milli seconds at which the remote log segment is copied to the remote tier storage.
     * @param state              State of the remote log segment.
     * @param brokerId           Broker id from which this event is generated.
    public RemoteLogSegmentMetadataUpdate(RemoteLogSegmentId remoteLogSegmentId, long eventTimestampMs,
                                          RemoteLogSegmentState state, int brokerId) {
        super(brokerId, eventTimestampMs);
        this.remoteLogSegmentId = Objects.requireNonNull(remoteLogSegmentId, "remoteLogSegmentId can not be null");
        this.state = Objects.requireNonNull(state, "state can not be null");

     * @return Universally unique id of this remote log segment.
    public RemoteLogSegmentId remoteLogSegmentId() {
        return remoteLogSegmentId;

     * It represents the state of the remote log segment. It can be one of the values of {@link RemoteLogSegmentState}.
    public RemoteLogSegmentState state() {
        return state;

    public TopicIdPartition topicIdPartition() {
        return remoteLogSegmentId.topicIdPartition();

    public boolean equals(Object o) {
        if (this == o) {
            return true;
        if (o == null || getClass() != o.getClass()) {
            return false;
        RemoteLogSegmentMetadataUpdate that = (RemoteLogSegmentMetadataUpdate) o;
        return Objects.equals(remoteLogSegmentId, that.remoteLogSegmentId) &&
               state == that.state &&
               eventTimestampMs() == that.eventTimestampMs() &&
               brokerId() == that.brokerId();

    public int hashCode() {
        return Objects.hash(remoteLogSegmentId, state, eventTimestampMs(), brokerId());

    public String toString() {
        return "RemoteLogSegmentMetadataUpdate{" +
               "remoteLogSegmentId=" + remoteLogSegmentId +
                ", state=" + state +
               ", eventTimestampMs=" + eventTimestampMs() +
               ", brokerId=" + brokerId() +


kafka 源码目录


kafka LogSegmentData 源码

kafka RemoteLogMetadata 源码

kafka RemoteLogMetadataManager 源码

kafka RemoteLogSegmentId 源码

kafka RemoteLogSegmentMetadata 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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