WhatsItESProducer.cc

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// -*- C++ -*-
//
// Package:    WhatsItESProducer
// Class:      WhatsItESProducer
//
//
// Original Author:  Chris Jones
//         Created:  Fri Jun 24 14:33:04 EDT 2005
//
//

// system include files
#include <memory>
#include <optional>

// user include files
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "FWCore/Framework/interface/ESProducer.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/TriggerNamesService.h"

#include "WhatsIt.h"
#include "Doodad.h"
#include "GadgetRcd.h"

#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/Utilities/interface/EDMException.h"
#include "FWCore/Utilities/interface/ESGetToken.h"

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

//
// class decleration
//
namespace edmtest {

  class WhatsItESProducer : public edm::ESProducer {
  public:
    WhatsItESProducer(edm::ParameterSet const& pset);
    ~WhatsItESProducer() override;

    typedef std::unique_ptr<WhatsIt> ReturnType;
    typedef std::unique_ptr<const WhatsIt> ReturnTypeA;
    typedef std::shared_ptr<WhatsIt> ReturnTypeB;
    typedef std::shared_ptr<const WhatsIt> ReturnTypeC;
    typedef std::optional<WhatsIt> ReturnTypeD;

    ReturnType produce(const GadgetRcd&);
    ReturnTypeA produceA(const GadgetRcd&);
    ReturnTypeB produceB(const GadgetRcd&);
    ReturnTypeC produceC(const GadgetRcd&);
    ReturnTypeD produceD(const GadgetRcd&);

    static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);

  private:
    // ----------member data ---------------------------
    edm::ESGetToken<edmtest::Doodad, GadgetRcd> token_;
    edm::ESGetToken<edmtest::Doodad, GadgetRcd> tokenA_;
    edm::ESGetToken<edmtest::Doodad, GadgetRcd> tokenB_;
    edm::ESGetToken<edmtest::Doodad, GadgetRcd> tokenC_;
    edm::ESGetToken<edmtest::Doodad, GadgetRcd> tokenD_;
  };

  //
  // constants, enums and typedefs
  //

  //
  // static data member definitions
  //

  //
  // constructors and destructor
  //
  WhatsItESProducer::WhatsItESProducer(edm::ParameterSet const& pset) {
    if (pset.getUntrackedParameter<bool>("test", true)) {
      throw edm::Exception(edm::errors::Configuration, "Something is wrong with ESProducer validation\n")
          << "Or the test configuration parameter was set true (it should never be true unless you want this "
             "exception)\n";
    }

    //the following line is needed to tell the framework what
    // data is being produced
    auto collector = setWhatProduced(this);
    auto collectorA = setWhatProduced(this, &WhatsItESProducer::produceA, edm::es::Label("A"));
    auto collectorB = setWhatProduced(this, &WhatsItESProducer::produceB, edm::es::Label("B"));
    auto collectorC = setWhatProduced(this, &WhatsItESProducer::produceC, edm::es::Label("C"));
    auto collectorD = setWhatProduced(this, &WhatsItESProducer::produceD, edm::es::Label("D"));

    //now do what ever other initialization is needed
    auto const data_label = pset.exists("doodadLabel") ? pset.getParameter<std::string>("doodadLabel") : std::string{};
    token_ = collector.consumes<edmtest::Doodad>(edm::ESInputTag{"", data_label});
    tokenA_ = collectorA.consumes<edmtest::Doodad>(edm::ESInputTag{"", data_label});
    tokenB_ = collectorB.consumes<edmtest::Doodad>(edm::ESInputTag{"", data_label});
    tokenC_ = collectorC.consumes<edmtest::Doodad>(edm::ESInputTag{"", data_label});
    tokenD_ = collectorD.consumes<edmtest::Doodad>(edm::ESInputTag{"", data_label});
  }

  WhatsItESProducer::~WhatsItESProducer() {
    // do anything here that needs to be done at desctruction time
    // (e.g. close files, deallocate resources etc.)
  }

  //
  // member functions
  //

  // ------------ method called to produce the data  ------------
  WhatsItESProducer::ReturnType WhatsItESProducer::produce(const GadgetRcd& iRecord) {
    //This tests that the Service system is accessible from a ESProducer
    edm::Service<edm::service::TriggerNamesService> tns;
    tns->getProcessName();

    edm::ESHandle<Doodad> doodad = iRecord.getHandle(token_);
    auto pWhatsIt = std::make_unique<WhatsIt>();
    pWhatsIt->a = doodad->a;
    return pWhatsIt;
  }

  WhatsItESProducer::ReturnTypeA WhatsItESProducer::produceA(const GadgetRcd& iRecord) {
    edm::ESHandle<Doodad> doodad = iRecord.getHandle(tokenA_);
    auto pWhatsIt = std::make_unique<WhatsIt>();
    pWhatsIt->a = doodad->a;
    return pWhatsIt;
  }

  WhatsItESProducer::ReturnTypeB WhatsItESProducer::produceB(const GadgetRcd& iRecord) {
    edm::ESHandle<Doodad> doodad = iRecord.getHandle(tokenB_);
    auto pWhatsIt = std::make_shared<WhatsIt>();
    pWhatsIt->a = doodad->a;
    return pWhatsIt;
  }

  WhatsItESProducer::ReturnTypeC WhatsItESProducer::produceC(const GadgetRcd& iRecord) {
    edm::ESHandle<Doodad> doodad = iRecord.getHandle(tokenC_);
    auto pWhatsIt = std::make_shared<WhatsIt>();
    pWhatsIt->a = doodad->a;
    return pWhatsIt;
  }

  WhatsItESProducer::ReturnTypeD WhatsItESProducer::produceD(const GadgetRcd& iRecord) {
    edm::ESHandle<Doodad> doodad = iRecord.getHandle(tokenD_);
    auto pWhatsIt = std::make_optional<WhatsIt>();
    pWhatsIt->a = doodad->a;
    return pWhatsIt;
  }

  void WhatsItESProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
    edm::ParameterSetDescription desc;
    desc.addOptional<std::string>("doodadLabel");
    desc.addUntracked<bool>("test", false)
        ->setComment("This parameter exists only to test the parameter set validation for ESSources");
    descriptions.add("WhatsItESProducer", desc);
  }
}  // namespace edmtest
using namespace edmtest;
//define this as a plug-in
DEFINE_FWK_EVENTSETUP_MODULE(WhatsItESProducer);