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.common.requests;
  
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.message.FetchSnapshotRequestData;
  import org.apache.kafka.common.message.FetchSnapshotResponseData;
  import org.apache.kafka.common.protocol.ApiKeys;
  import org.apache.kafka.common.protocol.Errors;
  import org.apache.kafka.common.protocol.Readable;
  
  import java.util.Optional;
  
  public final class FetchSnapshotRequest extends AbstractRequest {
      private final FetchSnapshotRequestData data;
  
      public FetchSnapshotRequest(FetchSnapshotRequestData data, short version) {
          super(ApiKeys.FETCH_SNAPSHOT, version);
          this.data = data;
      }
  
      @Override
      public FetchSnapshotResponse getErrorResponse(int throttleTimeMs, Throwable e) {
          return new FetchSnapshotResponse(
              new FetchSnapshotResponseData()
                  .setThrottleTimeMs(throttleTimeMs)
                  .setErrorCode(Errors.forException(e).code())
          );
      }
  
      @Override
      public FetchSnapshotRequestData data() {
          return data;
      }
  
      /**
       * Finds the PartitionSnapshot for a given topic partition.
       *
       * @param data the fetch snapshot request data
       * @param topicPartition the topic partition to find
       * @return the request partition snapshot if found, otherwise an empty Optional
       */
      public static Optional<FetchSnapshotRequestData.PartitionSnapshot> forTopicPartition(
          FetchSnapshotRequestData data,
          TopicPartition topicPartition
      ) {
          return data
              .topics()
              .stream()
              .filter(topic -> topic.name().equals(topicPartition.topic()))
              .flatMap(topic -> topic.partitions().stream())
              .filter(partition -> partition.partition() == topicPartition.partition())
              .findAny();
      }
  
      public static FetchSnapshotRequest parse(Readable readable, short version) {
          return new FetchSnapshotRequest(new FetchSnapshotRequestData(readable, version), version);
      }
  
      public static class Builder extends AbstractRequest.Builder<FetchSnapshotRequest> {
          private final FetchSnapshotRequestData data;
  
          public Builder(FetchSnapshotRequestData  data) {
              super(ApiKeys.FETCH_SNAPSHOT);
              this.data = data;
          }
  
          @Override
          public FetchSnapshotRequest build(short version) {
              return new FetchSnapshotRequest(data, version);
          }
  
          @Override
          public String toString() {
              return data.toString();
          }
      }
  }
  