text: /**
   *
   * 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.
   */
  #include <type_traits>
  #include <utility>
  #include <string>
  #include <memory>
  #include <algorithm>
  #include <set>
  #include "core/Core.h"
  #include "core/ConfigurationFactory.h"
  #include "core/FlowConfiguration.h"
  #include "io/StreamFactory.h"
  
  #include "core/yaml/YamlConfiguration.h"
  #include "utils/OptionalUtils.h"
  
  namespace org {
  namespace apache {
  namespace nifi {
  namespace minifi {
  namespace core {
  
  std::unique_ptr<core::FlowConfiguration> createFlowConfiguration(
      std::shared_ptr<core::Repository> repo, std::shared_ptr<core::Repository> flow_file_repo,
      std::shared_ptr<core::ContentRepository> content_repo, std::shared_ptr<Configure> configure,
      std::shared_ptr<io::StreamFactory> stream_factory, const std::string& configuration_class_name,
      const utils::optional<std::string>& path, std::shared_ptr<utils::file::FileSystem> filesystem,
      bool fail_safe) {
    std::string class_name_lc = configuration_class_name;
    std::transform(class_name_lc.begin(), class_name_lc.end(), class_name_lc.begin(), ::tolower);
    try {
      if (class_name_lc == "flowconfiguration") {
        // load the base configuration.
  
        return std::unique_ptr<core::FlowConfiguration>(new core::FlowConfiguration(
            repo, flow_file_repo, content_repo, stream_factory, configure, path, filesystem));
  
      } else if (class_name_lc == "yamlconfiguration") {
        // only load if the class is defined.
        return std::unique_ptr<core::FlowConfiguration>(instantiate<core::YamlConfiguration>(
            repo, flow_file_repo, content_repo, stream_factory, configure, path, filesystem));
  
      } else {
        if (fail_safe) {
          return std::unique_ptr<core::FlowConfiguration>(new core::FlowConfiguration(
              repo, flow_file_repo, content_repo, stream_factory, configure, path, filesystem));
        } else {
          throw std::runtime_error("Support for the provided configuration class could not be found");
        }
      }
    } catch (const std::runtime_error &) {
      if (fail_safe) {
        return std::unique_ptr<core::FlowConfiguration>(new core::FlowConfiguration(
            repo, flow_file_repo, content_repo, stream_factory, configure, path, filesystem));
      }
    }
  
    throw std::runtime_error("Support for the provided configuration class could not be found");
  }
  
  } /* namespace core */
  } /* namespace minifi */
  } /* namespace nifi */
  } /* namespace apache */
  } /* namespace org */
  
  