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.opensearch.aggregation;
  
  import java.util.List;
  
  import org.apache.camel.AggregationStrategy;
  import org.apache.camel.Exchange;
  import org.apache.camel.InvalidPayloadRuntimeException;
  import org.apache.camel.spi.Configurer;
  import org.apache.camel.spi.Metadata;
  import org.apache.camel.util.ObjectHelper;
  import org.opensearch.client.opensearch.core.BulkRequest;
  import org.opensearch.client.opensearch.core.bulk.BulkOperation;
  
  /**
   * Aggregates two {@link BulkOperation}s into a single {@link BulkRequest}.
   */
  @Metadata(label = "bean",
            description = "Aggregates two OpenSearch BulkOperation into a single BulkRequest",
            annotations = { "interfaceName=org.apache.camel.AggregationStrategy" })
  @Configurer(metadataOnly = true)
  public class OpensearchBulkRequestAggregationStrategy implements AggregationStrategy {
  
      @Override
      public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
          // Don't use getBody(Class<T>) here as we don't want to coerce the body type using a type converter.
          Object objBody = newExchange.getIn().getBody();
          if (!(objBody instanceof BulkOperation[])) {
              throw new InvalidPayloadRuntimeException(newExchange, BulkOperation[].class);
          }
  
          BulkOperation[] newBody = (BulkOperation[]) objBody;
          BulkRequest.Builder builder = new BulkRequest.Builder();
          builder.operations(List.of(newBody));
          if (ObjectHelper.isNotEmpty(oldExchange)) {
              BulkRequest request = oldExchange.getIn().getBody(BulkRequest.class);
              builder.operations(request.operations());
          }
          newExchange.getIn().setBody(builder.build());
          return oldExchange;
      }
  }
  