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.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.apache.kafka.clients.consumer.OffsetAndMetadata;
  import org.apache.kafka.common.TopicPartition;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  final class OffsetCache {
      private static final Logger LOG = LoggerFactory.getLogger(OffsetCache.class);
      private final Map<TopicPartition, Long> lastProcessedOffset = new ConcurrentHashMap<>();
  
      public void recordOffset(TopicPartition partition, long partitionLastOffset) {
          lastProcessedOffset.put(partition, partitionLastOffset);
      }
  
      public void removeCommittedEntries(Map<TopicPartition, OffsetAndMetadata> committed, Exception exception) {
          if (exception == null) {
              committed.forEach(this::removeCommittedEntry);
          } else {
              LOG.error("Failed to commit offset: {}", exception.getMessage(), exception);
          }
      }
  
      private void removeCommittedEntry(TopicPartition topicPartition, OffsetAndMetadata offsetAndMetadata) {
          LOG.debug(
                  "Offset {} from topic {} from partition {} has been successfully committed and is being removed from tracking",
                  offsetAndMetadata.offset(),
                  topicPartition.topic(), topicPartition.partition());
  
          lastProcessedOffset.remove(topicPartition);
      }
  
      public Long getOffset(TopicPartition partition) {
          return lastProcessedOffset.get(partition);
      }
  
      public long cacheSize() {
          return lastProcessedOffset.size();
      }
  
      public boolean contains(TopicPartition topicPartition) {
          return lastProcessedOffset.containsKey(topicPartition);
      }
  }
  