content: /*
   * 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.server.share.persister;
  
  import java.util.List;
  import java.util.Objects;
  
  /**
   * This class contains the data for a partition in the interface to {@link Persister}. The various interfaces
   * reflect the ways in which a subset of the data can be accessed for different purposes.
   */
  public class PartitionData implements
          PartitionIdData, PartitionStateData, PartitionErrorData, PartitionStateErrorData,
          PartitionStateBatchData, PartitionIdLeaderEpochData, PartitionAllData, PartitionStateSummaryData {
      private final int partition;
      private final int stateEpoch;
      private final long startOffset;
      private final short errorCode;
      private final String errorMessage;
      private final int leaderEpoch;
      private final List<PersisterStateBatch> stateBatches;
  
      public PartitionData(int partition, int stateEpoch, long startOffset, short errorCode,
                           String errorMessage, int leaderEpoch, List<PersisterStateBatch> stateBatches) {
          this.partition = partition;
          this.stateEpoch = stateEpoch;
          this.startOffset = startOffset;
          this.errorCode = errorCode;
          this.leaderEpoch = leaderEpoch;
          this.errorMessage = errorMessage;
          this.stateBatches = stateBatches;
      }
  
      public int partition() {
          return partition;
      }
  
      public int stateEpoch() {
          return stateEpoch;
      }
  
      public long startOffset() {
          return startOffset;
      }
  
      public short errorCode() {
          return errorCode;
      }
  
      public String errorMessage() {
          return errorMessage;
      }
  
      public int leaderEpoch() {
          return leaderEpoch;
      }
  
      public List<PersisterStateBatch> stateBatches() {
          return stateBatches;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
          PartitionData that = (PartitionData) o;
          return Objects.equals(partition, that.partition) &&
                  Objects.equals(stateEpoch, that.stateEpoch) &&
                  Objects.equals(startOffset, that.startOffset) &&
                  Objects.equals(errorCode, that.errorCode) &&
                  Objects.equals(errorMessage, that.errorMessage) &&
                  Objects.equals(leaderEpoch, that.leaderEpoch) &&
                  Objects.equals(stateBatches, that.stateBatches);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(partition, stateEpoch, startOffset, errorCode, leaderEpoch, errorMessage, stateBatches);
      }
  
      public static class Builder {
          private int partition;
          private int stateEpoch;
          private long startOffset;
          private short errorCode;
          private String errorMessage;
          private int leaderEpoch;
          private List<PersisterStateBatch> stateBatches;
  
          public Builder setPartition(int partition) {
              this.partition = partition;
              return this;
          }
  
          public Builder setStateEpoch(int stateEpoch) {
              this.stateEpoch = stateEpoch;
              return this;
          }
  
          public Builder setStartOffset(long startOffset) {
              this.startOffset = startOffset;
              return this;
          }
  
          public Builder setErrorCode(short errorCode) {
              this.errorCode = errorCode;
              return this;
          }
  
          public Builder setErrorMessage(String errorMessage) {
              this.errorMessage = errorMessage;
              return this;
          }
  
          public Builder setLeaderEpoch(int leaderEpoch) {
              this.leaderEpoch = leaderEpoch;
              return this;
          }
  
          public Builder setStateBatches(List<PersisterStateBatch> stateBatches) {
              this.stateBatches = stateBatches;
              return this;
          }
  
          public PartitionData build() {
              return new PartitionData(partition, stateEpoch, startOffset, errorCode, errorMessage, leaderEpoch, stateBatches);
          }
      }
  
      @Override
      public String toString() {
          return "PartitionData(" +
                  "partition=" + partition + "," +
                  "stateEpoch=" + stateEpoch + "," +
                  "startOffset=" + startOffset + "," +
                  "errorCode=" + errorCode + "," +
                  "errorMessage=" + errorMessage + "," +
                  "leaderEpoch=" + leaderEpoch + "," +
                  "stateBatches=" + stateBatches +
                  ")";
      }
  }
  