BoostIODBWriter.h

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#ifndef RecoLocalCalo_HcalRecAlgos_BoostIODBWriter_h
#define RecoLocalCalo_HcalRecAlgos_BoostIODBWriter_h

// -*- C++ -*-
//
// Package:    RecoLocalCalo/HcalRecAlgos
// Class:      BoostIODBWriter
// 
//
// Original Author:  Igor Volobouev
//         Created:  Fri Apr 25 17:58:33 CDT 2014
//
//

#include <string>
#include <fstream>
#include <memory>
#include <cassert>

#include "CondFormats/Serialization/interface/eos/portable_iarchive.hpp"

#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDAnalyzer.h"
#include "FWCore/Framework/interface/Event.h"

#include "FWCore/Utilities/interface/Exception.h"

#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "CondCore/DBOutputService/interface/PoolDBOutputService.h"

//
// class declaration
//
template<class DataType>
class BoostIODBWriter : public edm::EDAnalyzer
{
public:
    typedef DataType data_type;

    explicit BoostIODBWriter(const edm::ParameterSet&);
    inline virtual ~BoostIODBWriter() {}

private:
    virtual void analyze(const edm::Event&, const edm::EventSetup&) override;

    std::string inputFile_;
    std::string record_;
};

template<class DataType>
BoostIODBWriter<DataType>::BoostIODBWriter(const edm::ParameterSet& ps)
    : inputFile_(ps.getParameter<std::string>("inputFile")),
      record_(ps.getParameter<std::string>("record"))
{
}

template<class DataType>
void BoostIODBWriter<DataType>::analyze(const edm::Event& iEvent,
                                        const edm::EventSetup& iSetup)
{
    std::ifstream is(inputFile_.c_str(), std::ios_base::binary);
    if (!is.is_open())
        throw cms::Exception("InvalidArgument")
            << "Failed to open file \"" << inputFile_ << '"' << std::endl;

    std::unique_ptr<DataType> datum(new DataType());
    eos::portable_iarchive ar(is);
    ar & *datum;

    edm::Service<cond::service::PoolDBOutputService> poolDbService;
    if (poolDbService.isAvailable())
        poolDbService->writeOne(datum.release(),
                                poolDbService->currentTime(),
                                record_);
    else
        throw cms::Exception("ConfigurationError")
            << "PoolDBOutputService is not available, "
            << "please configure it properly" << std::endl;
}

#endif // RecoLocalCalo_HcalRecAlgos_BoostIODBWriter_h