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 kafka.server.share;
  
  import org.apache.kafka.common.TopicIdPartition;
  import org.apache.kafka.server.LogReadResult;
  import org.apache.kafka.storage.internals.log.LogOffsetMetadata;
  import org.apache.kafka.storage.internals.log.RemoteLogReadResult;
  import org.apache.kafka.storage.internals.log.RemoteStorageFetchInfo;
  
  import java.util.ArrayList;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.concurrent.CompletableFuture;
  import java.util.concurrent.Future;
  import java.util.function.BiConsumer;
  
  /**
   * This class is used to store the remote storage fetch information for topic partitions in a share fetch request.
   */
  public class PendingRemoteFetches {
      private final List<RemoteFetch> remoteFetches;
      private final LinkedHashMap<TopicIdPartition, LogOffsetMetadata> fetchOffsetMetadataMap;
  
      PendingRemoteFetches(List<RemoteFetch> remoteFetches, LinkedHashMap<TopicIdPartition, LogOffsetMetadata> fetchOffsetMetadataMap) {
          this.remoteFetches = remoteFetches;
          this.fetchOffsetMetadataMap = fetchOffsetMetadataMap;
      }
  
      public boolean isDone() {
          for (RemoteFetch remoteFetch : remoteFetches) {
              if (!remoteFetch.remoteFetchResult.isDone())
                  return false;
          }
          return true;
      }
  
      public void invokeCallbackOnCompletion(BiConsumer<Void, Throwable> callback) {
          List<CompletableFuture<RemoteLogReadResult>> remoteFetchResult = new ArrayList<>();
          remoteFetches.forEach(remoteFetch -> remoteFetchResult.add(remoteFetch.remoteFetchResult()));
          CompletableFuture.allOf(remoteFetchResult.toArray(new CompletableFuture<?>[0])).whenComplete(callback);
      }
  
      public List<RemoteFetch> remoteFetches() {
          return remoteFetches;
      }
  
      public LinkedHashMap<TopicIdPartition, LogOffsetMetadata> fetchOffsetMetadataMap() {
          return fetchOffsetMetadataMap;
      }
  
      @Override
      public String toString() {
          return "PendingRemoteFetches(" +
              "remoteFetches=" + remoteFetches +
              ", fetchOffsetMetadataMap=" + fetchOffsetMetadataMap +
              ")";
      }
  
      public record RemoteFetch(
          TopicIdPartition topicIdPartition,
          LogReadResult logReadResult,
          Future<Void> remoteFetchTask,
          CompletableFuture<RemoteLogReadResult> remoteFetchResult,
          RemoteStorageFetchInfo remoteFetchInfo
      ) {
          @Override
          public String toString() {
              return "RemoteFetch(" +
                  "topicIdPartition=" + topicIdPartition +
                  ", logReadResult=" + logReadResult +
                  ", remoteFetchTask=" + remoteFetchTask +
                  ", remoteFetchResult=" + remoteFetchResult +
                  ", remoteFetchInfo=" + remoteFetchInfo +
                  ")";
          }
      }
  }
  