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.camel.component.kafka.consumer;
  
  import java.util.Collections;
  import java.util.Map;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.component.kafka.KafkaConsumer;
  import org.apache.camel.spi.StateRepository;
  import org.apache.kafka.clients.consumer.Consumer;
  import org.apache.kafka.clients.consumer.ConsumerRecord;
  import org.apache.kafka.clients.consumer.OffsetAndMetadata;
  import org.apache.kafka.common.TopicPartition;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class AsyncCommitManager extends AbstractCommitManager {
      private static final Logger LOG = LoggerFactory.getLogger(AsyncCommitManager.class);
      private final Consumer<?, ?> consumer;
  
      private final OffsetCache offsetCache = new OffsetCache();
      private final StateRepository<String, String> offsetRepository;
  
      public AsyncCommitManager(Consumer<?, ?> consumer, KafkaConsumer kafkaConsumer, String threadId, String printableTopic) {
          super(consumer, kafkaConsumer, threadId, printableTopic);
  
          this.consumer = consumer;
  
          offsetRepository = configuration.getOffsetRepository();
      }
  
      @Override
      public void commit() {
          if (kafkaConsumer.getEndpoint().getConfiguration().isAutoCommitEnable()) {
              LOG.info("Auto commitAsync {} from {}", threadId, printableTopic);
              consumer.commitAsync();
          }
      }
  
      @Override
      public void commit(TopicPartition partition) {
          Long offset = offsetCache.getOffset(partition);
          if (offset == null) {
              return;
          }
  
          commitAsync(consumer, partition, offset);
      }
  
      private void commitAsync(Consumer<?, ?> consumer, TopicPartition partition, long partitionLastOffset) {
          if (LOG.isDebugEnabled()) {
              LOG.debug("Auto commitAsync on stop {} from topic {}", threadId, partition.topic());
          }
  
          final Map<TopicPartition, OffsetAndMetadata> topicPartitionOffsetAndMetadataMap
                  = Collections.singletonMap(partition, new OffsetAndMetadata(partitionLastOffset + 1));
          consumer.commitAsync(topicPartitionOffsetAndMetadataMap, this::postCommitCallback);
      }
  
      @Override
      public KafkaManualCommit getManualCommit(
              Exchange exchange, TopicPartition partition, ConsumerRecord<Object, Object> consumerRecord) {
  
          KafkaManualCommitFactory manualCommitFactory = kafkaConsumer.getEndpoint().getKafkaManualCommitFactory();
          if (manualCommitFactory == null) {
              manualCommitFactory = new DefaultKafkaManualAsyncCommitFactory();
          }
  
          return getManualCommit(exchange, partition, consumerRecord, manualCommitFactory);
      }
  
      @Override
      public void recordOffset(TopicPartition partition, long partitionLastOffset) {
          offsetCache.recordOffset(partition, partitionLastOffset);
      }
  
      private void postCommitCallback(Map<TopicPartition, OffsetAndMetadata> committed, Exception exception) {
          if (exception == null) {
              if (offsetRepository != null) {
                  for (var entry : committed.entrySet()) {
                      saveStateToOffsetRepository(entry.getKey(), entry.getValue().offset(), offsetRepository);
                  }
              }
          }
  
          offsetCache.removeCommittedEntries(committed, exception);
      }
  }
  