src/HTTPDriver.h

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/*
 *   MetriVis - Metrics Visualization Application
 *
 *
 *   License notice:
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef _METRIVIS_HTTP_DRIVER__
#define _METRIVIS_HTTP_DRIVER__

#include <map>
#include "BaseClass.h"
#include "pattern/Thread.h"
#include "pattern/Singleton.h"
#include "lib/easyhttpd/connection.h"
#include "lib/easyhttpd/embedhttp.h"
#include "RequestDescription.h"


namespace metrivis {

// Prototype class declarations.
class RequestHandlerBase;


class HTTPDriver : public Thread, public BaseClass {

public:
  HTTPDriver(int port_number = 8080);

  virtual ~HTTPDriver();

  virtual int Init();

  int StartListening();


  int StopListening();


  virtual int Uninit();


  inline void set_port_number(int port_number) {
    port_number_ = port_number;
  }

  inline int port_number() const {
    return port_number_;
  }

  inline void set_number_parallelism(int number_parallelism) {
    number_parallelism_ = number_parallelism;
  }

  inline int number_parallelism() const {
    return number_parallelism_;
  }


protected:

  virtual void Run();



  void RegisterRequestHandler(const std::string& id, RequestHandlerBase*
                              handler);


  void RegisterRequestHandlers();


  void UnregisterRequestHandlers();


private:

  void AssignRequestToHandler(RequestDescription& request_description);



private:
  int port_number_;                    

  http::Connection connection_;        

  std::map<std::string, RequestHandlerBase*> request_handlers_;

  int number_parallelism_;            

  http::ehttp http_parser_;           

};

typedef Singleton<HTTPDriver> HTTP;

} //  namespace metrivis

#endif // _METRIVIS_HTTP_DRIVER__

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