Service.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_Service_hxx
#define __ccxx_Service_hxx

#include <commonc++/Common.h++>
#include <commonc++/Application.h++>
#include <commonc++/SystemException.h++>

namespace ccxx {

class COMMONCPP_API Service : public Application
{
 public:

  Service(int argc, char** argv, const String& version,
          const String& compileDate = "", const String& compileTime = "");

  virtual ~Service();

 protected:

  inline void setDescription(const String& desc)
  { _desc = desc; }

  inline void setWorkingDir(const String& dir)
  { _workingDir = dir; }

  /*
   */
  virtual bool processOption(char opt, const String& longOpt,
                             const String& arg = String::null);

  void detach();

  virtual void run() = 0;

  void testShutdown();

  virtual void shutdown() = 0;

  inline bool isDebug() const
  { return(_debug); }

 private:

#ifdef CCXX_OS_WINDOWS
  static void _serviceMain(int argc, char** argv);
  void _serviceInit();
  static void _controlHandler(DWORD code);
  void _serviceStart();
  void _serviceStop();
  void _serviceInstall();
  void _serviceUninstall();
  bool _waitForStatus(SC_HANDLE handle, DWORD pending, DWORD final);

  SERVICE_STATUS_HANDLE _handle;
  SERVICE_STATUS _status;
  UINT _oldErrorMode;
#endif

#ifdef CCXX_OS_POSIX
  static void _sighandler(int sig);
#endif

  String _name;
  String _displayName;
  String _desc;
  bool _shutdown;
  bool _debug;
  String _pidFile;

#ifdef CCXX_OS_WINDOWS
  enum Action { None, Start, Stop, Install, Uninstall } _action;
#endif

  String _workingDir;
  static Service *_instance;
};

} // namespace ccxx

#endif // __ccxx_Service_hxx