kafka ReplicaInfo 源码
kafka ReplicaInfo 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/admin/ReplicaInfo.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.clients.admin;
/**
* A description of a replica on a particular broker.
*/
public class ReplicaInfo {
private final long size;
private final long offsetLag;
private final boolean isFuture;
public ReplicaInfo(long size, long offsetLag, boolean isFuture) {
this.size = size;
this.offsetLag = offsetLag;
this.isFuture = isFuture;
}
/**
* The total size of the log segments in this replica in bytes.
*/
public long size() {
return size;
}
/**
* The lag of the log's LEO with respect to the partition's
* high watermark (if it is the current log for the partition)
* or the current replica's LEO (if it is the {@linkplain #isFuture() future log}
* for the partition).
*/
public long offsetLag() {
return offsetLag;
}
/**
* Whether this replica has been created by a AlterReplicaLogDirsRequest
* but not yet replaced the current replica on the broker.
*
* @return true if this log is created by AlterReplicaLogDirsRequest and will replace the current log
* of the replica at some time in the future.
*/
public boolean isFuture() {
return isFuture;
}
@Override
public String toString() {
return "ReplicaInfo(" +
"size=" + size +
", offsetLag=" + offsetLag +
", isFuture=" + isFuture +
')';
}
}
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