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.ironmq;
  
  import java.util.Map;
  
  import com.google.gson.Gson;
  import org.apache.camel.Message;
  
  public final class GsonUtil {
      private static final Gson GSON = new Gson();
  
      private GsonUtil() {
      }
  
      static class IronMqMessage {
          private Map<String, Object> headers;
          private final String body;
  
          IronMqMessage(String body, Map<String, Object> headers) {
              this.headers = headers;
              this.body = body;
          }
  
          public Map<String, Object> getHeaders() {
              return headers;
          }
  
          public String getBody() {
              return body;
          }
      }
  
      static String getBodyFromMessage(Message message) {
          IronMqMessage ironMessage = new IronMqMessage(message.getBody(String.class), message.getHeaders());
          return GSON.toJson(ironMessage);
      }
  
      static void copyFrom(io.iron.ironmq.Message source, Message target) {
          IronMqMessage ironMqMessage = GSON.fromJson(source.getBody(), IronMqMessage.class);
          target.setBody(ironMqMessage.getBody());
          if (ironMqMessage.getHeaders() != null) {
              for (Map.Entry<String, Object> entry : ironMqMessage.getHeaders().entrySet()) {
                  String key = entry.getKey();
                  Object value = entry.getValue();
                  if (target.getHeader(key) == null) {
                      target.setHeader(key, value);
                  }
              }
          }
      }
  }
  