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.clients.consumer.internals;
  
  import org.apache.kafka.clients.consumer.AcknowledgementCommitCallback;
  import org.apache.kafka.common.KafkaException;
  import org.apache.kafka.common.TopicIdPartition;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  public class AcknowledgementCommitCallbackHandler {
  
      private static final Logger LOG = LoggerFactory.getLogger(AcknowledgementCommitCallbackHandler.class);
      private final AcknowledgementCommitCallback acknowledgementCommitCallback;
      private boolean enteredCallback = false;
  
      AcknowledgementCommitCallbackHandler(AcknowledgementCommitCallback acknowledgementCommitCallback) {
          this.acknowledgementCommitCallback = acknowledgementCommitCallback;
      }
  
      public boolean hasEnteredCallback() {
          return enteredCallback;
      }
  
      void onComplete(List<Map<TopicIdPartition, Acknowledgements>> acknowledgementsMapList) {
          final ArrayList<Throwable> exceptions = new ArrayList<>();
          acknowledgementsMapList.forEach(acknowledgementsMap -> acknowledgementsMap.forEach((partition, acknowledgements) -> {
              KafkaException exception = acknowledgements.getAcknowledgeException();
              Set<Long> offsets = acknowledgements.getAcknowledgementsTypeMap().keySet();
              Set<Long> offsetsCopy = Collections.unmodifiableSet(offsets);
              enteredCallback = true;
              try {
                  acknowledgementCommitCallback.onComplete(Collections.singletonMap(partition, offsetsCopy), exception);
              } catch (Throwable e) {
                  LOG.error("Exception thrown by acknowledgement commit callback", e);
                  exceptions.add(e);
              } finally {
                  enteredCallback = false;
              }
          }));
          if (!exceptions.isEmpty()) {
              throw ConsumerUtils.maybeWrapAsKafkaException(exceptions.get(0), "Exception thrown by acknowledgement commit callback");
          }
      }
  }
  