kafka ProducerIdsDelta 源码

  • 2022-10-20
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kafka ProducerIdsDelta 代码

文件路径:/metadata/src/main/java/org/apache/kafka/image/ProducerIdsDelta.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.server.common.MetadataVersion;


public final class ProducerIdsDelta {
    private long nextProducerId;

    public ProducerIdsDelta(ProducerIdsImage image) {
        this.nextProducerId = image.highestSeenProducerId();
    }

    public void setNextProducerId(long highestSeenProducerId) {
        this.nextProducerId = highestSeenProducerId;
    }

    public long nextProducerId() {
        return nextProducerId;
    }

    public void finishSnapshot() {
        // Nothing to do
    }

    public void handleMetadataVersionChange(MetadataVersion newVersion) {
        // no-op
    }

    public void replay(ProducerIdsRecord record) {
        nextProducerId = record.nextProducerId();
    }

    public ProducerIdsImage apply() {
        return new ProducerIdsImage(nextProducerId);
    }

    @Override
    public String toString() {
        return "ProducerIdsDelta(nextProducerId=" + nextProducerId + ")";
    }
}

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