kafka RemoteLogSegmentId 源码
kafka RemoteLogSegmentId 代码
文件路径：/storage/api/src/main/java/org/apache/kafka/server/log/remote/storage/RemoteLogSegmentId.java
/*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* 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.
*/
@InterfaceStability.Evolving
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;
}
@Override
public String toString() {
return "RemoteLogSegmentId{" +
"topicIdPartition=" + topicIdPartition +
", id=" + id +
'}';
}
@Override
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);
}
@Override
public int hashCode() {
return Objects.hash(topicIdPartition, id);
}
}
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