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.salesforce.internal.processor;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Locale;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import org.apache.camel.AsyncCallback;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.Service;
  
  public interface SalesforceProcessor extends Service {
  
      boolean process(Exchange exchange, AsyncCallback callback);
  
      default Map<String, List<String>> determineHeaders(final Exchange exchange) {
          final Message inboundMessage = exchange.getIn();
  
          final Map<String, Object> headers = inboundMessage.getHeaders();
  
          final Map<String, List<String>> answer = new HashMap<>();
          for (final String headerName : headers.keySet()) {
              final String headerNameLowercase = headerName.toLowerCase(Locale.US);
              if (headerNameLowercase.startsWith("sforce") || headerNameLowercase.startsWith("x-sfdc")) {
                  final Object headerValue = inboundMessage.getHeader(headerName);
  
                  if (headerValue instanceof String) {
                      answer.put(headerName, Collections.singletonList((String) headerValue));
                  } else if (headerValue instanceof String[]) {
                      answer.put(headerName, Arrays.asList((String[]) headerValue));
                  } else if (headerValue instanceof Collection) {
                      Collection<?> collection = (Collection<?>) headerValue;
                      answer.put(headerName, collection.stream().map(String.class::cast).collect(Collectors.toList()));
                  } else {
                      answer.put(headerName, Collections.singletonList(String.valueOf(headerValue)));
                  }
              }
          }
          return answer;
      }
  }
  