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Kafka on Pulsar implemented using Pulsar Protocol Handler

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/**
 * Licensed 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 io.streamnative.pulsar.handlers.kop.storage;

import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import lombok.AllArgsConstructor;
import lombok.Data;

@Data
@AllArgsConstructor
public final class ProducerStateManagerSnapshot {
    private final String topicPartition;
    private final String topicUUID;
    private final long offset;
    private final Map producers;

    // ongoing transactions sorted by the first offset of the transaction
    private final TreeMap ongoingTxns;
    private final List abortedIndexList;

}