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.tiered.storage.actions;
  
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.storage.internals.epoch.LeaderEpochFileCache;
  import org.apache.kafka.storage.internals.log.EpochEntry;
  import org.apache.kafka.storage.internals.log.UnifiedLog;
  import org.apache.kafka.test.TestUtils;
  import org.apache.kafka.tiered.storage.TieredStorageTestAction;
  import org.apache.kafka.tiered.storage.TieredStorageTestContext;
  
  import java.io.PrintStream;
  import java.util.Optional;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.atomic.AtomicReference;
  
  public final class ExpectLeaderEpochCheckpointAction implements TieredStorageTestAction {
  
      private final Integer brokerId;
      private final TopicPartition partition;
      private final Integer beginEpoch;
      private final Long startOffset;
  
      public ExpectLeaderEpochCheckpointAction(Integer brokerId,
                                               TopicPartition partition,
                                               Integer beginEpoch,
                                               Long startOffset) {
          this.brokerId = brokerId;
          this.partition = partition;
          this.beginEpoch = beginEpoch;
          this.startOffset = startOffset;
      }
  
      @Override
      public void doExecute(TieredStorageTestContext context) throws InterruptedException, ExecutionException {
          AtomicReference<EpochEntry> earliestEntryOpt = new AtomicReference<>();
          TestUtils.waitForCondition(() -> {
              EpochEntry earliestEntry = null;
              Optional<UnifiedLog> log = context.log(brokerId, partition);
              if (log.isPresent()) {
                  LeaderEpochFileCache leaderEpochCache = log.get().leaderEpochCache();
                  earliestEntry = leaderEpochCache.earliestEntry().orElse(null);
              }
              earliestEntryOpt.set(earliestEntry);
              return earliestEntry != null && beginEpoch == earliestEntry.epoch
                      && startOffset == earliestEntry.startOffset;
          }, 2000L, "leader-epoch-checkpoint begin-epoch: " + beginEpoch + " and start-offset: "
                  + startOffset + " doesn't match with actual: " + earliestEntryOpt.get());
      }
  
      @Override
      public void describe(PrintStream output) {
          output.printf("expect-leader-epoch-checkpoint broker-id: %d, partition: %s, beginEpoch: %d, startOffset: %d%n",
                  brokerId, partition, beginEpoch, startOffset);
      }
  }
  