text: #include <Storages/RabbitMQ/RabbitMQSettings.h>
  #include <Parsers/ASTCreateQuery.h>
  #include <Parsers/ASTSetQuery.h>
  #include <Parsers/ASTFunction.h>
  #include <Common/Exception.h>
  
  namespace DB
  {
  
  namespace ErrorCodes
  {
      extern const int BAD_ARGUMENTS;
      extern const int UNKNOWN_SETTING;
  }
  
  IMPLEMENT_SETTINGS_TRAITS(RabbitMQSettingsTraits, LIST_OF_RABBITMQ_SETTINGS)
  
  void RabbitMQSettings::loadFromQuery(ASTStorage & storage_def)
  {
      if (storage_def.settings)
      {
          try
          {
              applyChanges(storage_def.settings->changes);
          }
          catch (Exception & e)
          {
              if (e.code() == ErrorCodes::UNKNOWN_SETTING)
                  throw Exception(e.message() + " for storage " + storage_def.engine->name, ErrorCodes::BAD_ARGUMENTS);
              else
                  e.rethrow();
          }
      }
      else
      {
          auto settings_ast = std::make_shared<ASTSetQuery>();
          settings_ast->is_standalone = false;
          storage_def.set(storage_def.settings, settings_ast);
      }
  }
  }
  