/*
 * Sampler.h
 *
 *  Created on: Sep 27, 2012
 *      Author: dklein
 */

#ifndef SAMPLER_H_
#define SAMPLER_H_

#include <string>
#include "base/FairRunAna.h"
#include "base/FairTask.h"
#include "Device.h"
#include "SamplerTask.h"

namespace Highway
{

/**
 * Reads simulated digis from a root file and samples the digi as a time-series UDP stream.
 * Must be initialized with the filename to the root file and the name of the sub-detector
 * branch, whose digis should be streamed.
 *
 * The purpose of this class is to provide a data source of digis very similar to the
 * future detector output at the point where the detector is connected to the online
 * computing farm. For the development of online analysis algorithms, it is very important
 * to simulate the future detector output as realistic as possible to evaluate the
 * feasibility and quality of the various possible online analysis features.
 */
#define DEVICE Device<0,1>
class Sampler: public DEVICE
{
  private:
    FairRunAna* fFairRunAna;
    SamplerTask* fSamplerTask;
    std::string fInputFile; // Filename of a root file containing the simulated digis.
    std::string fParFile;
    std::string fBranch; // The name of the sub-detector branch to stream the digis from.
    int fEventRate;
    int fEventCounter;
  public:
    enum {
      InputFile = DEVICE::Last,
      Branch,
      ParFile,
      EventRate
    };
    Sampler();
    virtual ~Sampler();
    virtual void Init();
    virtual void Run();
    void Log(int intervalInMs);
    void ResetEventCounter();
    virtual void SetProperty(int key, std::string value, int slot = 0);
    virtual std::string GetProperty(int key, std::string default_ = "", int slot = 0);
    virtual void SetProperty(int key, int value, int slot = 0);
    virtual int GetProperty(int key, int default_ = 0, int slot = 0);
};

} /* namespace Highway */
#endif /* SAMPLER_H_ */