kafka ProducerIdsImage 源码
kafka ProducerIdsImage 代码
文件路径：/metadata/src/main/java/org/apache/kafka/image/ProducerIdsImage.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.image;
import org.apache.kafka.common.metadata.ProducerIdsRecord;
import org.apache.kafka.image.writer.ImageWriter;
import org.apache.kafka.image.writer.ImageWriterOptions;
import java.util.Objects;
/**
* Stores the highest seen producer ID in the metadata image.
*
* This class is thread-safe.
*/
public final class ProducerIdsImage {
public final static ProducerIdsImage EMPTY = new ProducerIdsImage(-1L);
private final long nextProducerId;
public ProducerIdsImage(long nextProducerId) {
this.nextProducerId = nextProducerId;
}
public long highestSeenProducerId() {
return nextProducerId;
}
public void write(ImageWriter writer, ImageWriterOptions options) {
if (nextProducerId >= 0) {
writer.write(0, new ProducerIdsRecord().
setBrokerId(-1).
setBrokerEpoch(-1).
setNextProducerId(nextProducerId));
}
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ProducerIdsImage)) return false;
ProducerIdsImage other = (ProducerIdsImage) o;
return nextProducerId == other.nextProducerId;
}
@Override
public int hashCode() {
return Objects.hash(nextProducerId);
}
@Override
public String toString() {
return "ProducerIdsImage(highestSeenProducerId=" + nextProducerId + ")";
}
public boolean isEmpty() {
return nextProducerId < 0;
}
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦