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,
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   * See the License for the specific language governing permissions and
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  package org.apache.kafka.tiered.storage.actions;
  
  import org.apache.kafka.clients.admin.TopicDescription;
  import org.apache.kafka.common.TopicIdPartition;
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.Uuid;
  import org.apache.kafka.server.log.remote.metadata.storage.RemoteLogMetadataTopicPartitioner;
  import org.apache.kafka.server.log.remote.metadata.storage.TopicBasedRemoteLogMetadataManagerConfig;
  import org.apache.kafka.tiered.storage.TieredStorageTestAction;
  import org.apache.kafka.tiered.storage.TieredStorageTestContext;
  
  import java.io.PrintStream;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.ExecutionException;
  import java.util.stream.Collectors;
  
  import static org.apache.kafka.tiered.storage.utils.TieredStorageTestUtils.describeTopics;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public final class ExpectUserTopicMappedToMetadataPartitionsAction implements TieredStorageTestAction {
  
      private final String topic;
      private final List<Integer> metadataPartitions;
  
      public ExpectUserTopicMappedToMetadataPartitionsAction(String topic,
                                                             List<Integer> metadataPartitions) {
          this.topic = topic;
          this.metadataPartitions = metadataPartitions;
      }
  
      @Override
      public void doExecute(TieredStorageTestContext context) throws InterruptedException, ExecutionException {
          String metadataTopic = TopicBasedRemoteLogMetadataManagerConfig.REMOTE_LOG_METADATA_TOPIC_NAME;
          Map<String, TopicDescription> descriptions = describeTopics(context, List.of(topic, metadataTopic));
          int metadataTopicPartitionCount = descriptions.get(metadataTopic).partitions().size();
          RemoteLogMetadataTopicPartitioner partitioner =
                  new RemoteLogMetadataTopicPartitioner(metadataTopicPartitionCount);
  
          Uuid topicId = descriptions.get(topic).topicId();
          Set<Integer> actualMetadataPartitions = descriptions.get(topic).partitions()
                  .stream()
                  .map(info -> new TopicIdPartition(topicId, new TopicPartition(topic, info.partition())))
                  .map(partitioner::metadataPartition)
                  .collect(Collectors.toSet());
          assertTrue(actualMetadataPartitions.containsAll(metadataPartitions),
                  () -> "metadata-partition distribution expected: " + metadataPartitions + ", actual: "
                          + actualMetadataPartitions);
      }
  
      @Override
      public void describe(PrintStream output) {
          output.printf("expect-user-topic-mapped-to-metadata-partitions topic: %s metadata-partitions: %s%n",
                  topic, metadataPartitions);
      }
  }
  