kafka TopicPartitionReplica 源码
kafka TopicPartitionReplica 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/TopicPartitionReplica.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.common;
import java.io.Serializable;
import java.util.Objects;
/**
* The topic name, partition number and the brokerId of the replica
*/
public final class TopicPartitionReplica implements Serializable {
private int hash = 0;
private final int brokerId;
private final int partition;
private final String topic;
public TopicPartitionReplica(String topic, int partition, int brokerId) {
this.topic = Objects.requireNonNull(topic);
this.partition = partition;
this.brokerId = brokerId;
}
public String topic() {
return topic;
}
public int partition() {
return partition;
}
public int brokerId() {
return brokerId;
}
@Override
public int hashCode() {
if (hash != 0) {
return hash;
}
final int prime = 31;
int result = 1;
result = prime * result + topic.hashCode();
result = prime * result + partition;
result = prime * result + brokerId;
this.hash = result;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
TopicPartitionReplica other = (TopicPartitionReplica) obj;
return partition == other.partition && brokerId == other.brokerId && topic.equals(other.topic);
}
@Override
public String toString() {
return String.format("%s-%d-%d", topic, partition, brokerId);
}
}
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