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 com.cloud.api;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.LogManager;
  
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.google.gson.Gson;
  
  import org.apache.cloudstack.api.ResponseObject;
  
  public class ApiSerializerHelper {
      protected static Logger LOGGER = LogManager.getLogger(ApiSerializerHelper.class);
      private static String token = "/";
  
      public static String toSerializedString(Object result) {
          if (result != null) {
              Class<?> clz = result.getClass();
              Gson gson = ApiGsonHelper.getBuilder().create();
  
              if (result instanceof ResponseObject) {
                  return clz.getName() + token + ((ResponseObject)result).getObjectName() + token + gson.toJson(result);
              } else {
                  return clz.getName() + token + gson.toJson(result);
              }
          }
          return null;
      }
  
      public static Object fromSerializedString(String result) {
          try {
              if (result != null && !result.isEmpty()) {
                  String[] serializedParts = result.split(token);
  
                  if (serializedParts.length < 2) {
                      return null;
                  }
                  String clzName = serializedParts[0];
                  String nameField = null;
                  String content = null;
                  if (serializedParts.length == 2) {
                      content = serializedParts[1];
                  } else {
                      nameField = serializedParts[1];
                      int index = result.indexOf(token + nameField + token);
                      content = result.substring(index + nameField.length() + 2);
                  }
  
                  Class<?> clz;
                  try {
                      clz = Class.forName(clzName);
                  } catch (ClassNotFoundException e) {
                      return null;
                  }
  
                  Gson gson = ApiGsonHelper.getBuilder().create();
                  Object obj = gson.fromJson(content, clz);
                  if (nameField != null) {
                      ((ResponseObject)obj).setObjectName(nameField);
                  }
                  return obj;
              }
              return null;
          } catch (RuntimeException e) {
              LOGGER.error("Caught runtime exception when doing GSON deserialization on: " + result);
              throw e;
          }
      }
  
      public static Map<String, Object> fromSerializedStringToMap(String result) {
          Map<String,Object> objParams = null;
          try {
              Object obj = fromSerializedString(result);
              if (obj != null) {
                  Gson gson = ApiGsonHelper.getBuilder().create();
                  String objJson = gson.toJson(obj);
                  objParams = new ObjectMapper().readValue(objJson, HashMap.class);
                  objParams.put("class", obj.getClass().getName());
  
                  String nameField = ((ResponseObject)obj).getObjectName();
                  if (nameField != null) {
                      objParams.put("object", nameField);
                  }
              }
          } catch (RuntimeException | JsonProcessingException e) {
              LOGGER.error("Caught runtime exception when doing GSON deserialization to map on: " + result, e);
          }
  
          return objParams;
      }
  }
  