text: ////////////////////////////////////////////////////////////////////////////////
  /// DISCLAIMER
  ///
  /// Copyright 2016 ArangoDB GmbH, Cologne, Germany
  ///
  /// Licensed 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.
  ///
  /// Copyright holder is ArangoDB GmbH, Cologne, Germany
  ///
  /// @author Dr. Frank Celler
  ////////////////////////////////////////////////////////////////////////////////
  
  #ifndef ARANGODB_LOGGER_LOGGER_FEATURE_H
  #define ARANGODB_LOGGER_LOGGER_FEATURE_H 1
  
  #include "ApplicationFeatures/ApplicationFeature.h"
  
  namespace arangodb {
  
  class LoggerFeature final : public application_features::ApplicationFeature {
   public:
    LoggerFeature(application_features::ApplicationServer& server, bool threaded);
    ~LoggerFeature();
  
    void collectOptions(std::shared_ptr<options::ProgramOptions>) override final;
    void loadOptions(std::shared_ptr<options::ProgramOptions>,
                     char const* binaryPath) override final;
    void validateOptions(std::shared_ptr<options::ProgramOptions>) override final;
    void prepare() override final;
    void unprepare() override final;
  
    void setBackgrounded(bool backgrounded) { _backgrounded = backgrounded; }
    void disableThreaded() { _threaded = false; }
    void setSupervisor(bool supervisor) { _supervisor = supervisor; }
  
   private:
    std::vector<std::string> _output;
    std::vector<std::string> _levels;
    std::string _prefix;
    std::string _file;
    bool _useLocalTime = false;
    bool _useColor = true;
    bool _useEscaped = true;
    bool _lineNumber = false;
    bool _shortenFilenames = true;
    bool _threadId = false;
    bool _threadName = false;
    bool _performance = false;
    bool _keepLogRotate = false;
    bool _foregroundTty = false;
    bool _forceDirect = false;
    bool _useMicrotime = false;
    bool _showRole = false;
    bool _supervisor = false;
    bool _backgrounded = false;
    bool _threaded = false;
  };
  
  }
  
  #endif