Disturbance_module.cc

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// framework libraries
#include "art/Framework/Core/EDProducer.h"
#include "art/Framework/Core/ModuleMacros.h"
#include "canvas/Utilities/Exception.h"
#include "fhiclcpp/types/Atom.h"

namespace lar {
  namespace example {

    class Disturbance : public art::EDProducer {
    public:
      struct Config {

        fhicl::Atom<unsigned int> NArtExceptions{fhicl::Name("NArtExceptions"),
                                                 fhicl::Comment("number of exceptions to throw")};

      }; // struct Config

      using Parameters = art::EDProducer::Table<Config>;

      Disturbance(Parameters const& config);

      virtual void produce(art::Event&) override;

    private:
      unsigned int fNArtExceptions;

      static void throwArtException();

    }; // class Disturbance

  } // namespace example
} // namespace lar

//------------------------------------------------------------------------------
lar::example::Disturbance::Disturbance(Parameters const& config)
  : EDProducer{config}, fNArtExceptions(config().NArtExceptions())
{}

//------------------------------------------------------------------------------
void lar::example::Disturbance::produce(art::Event&)
{

  //
  // art::Exception
  //
  for (unsigned int i = 0; i < fNArtExceptions; ++i) {
    try {
      throwArtException();
    }
    catch (art::Exception const&) {
    }
  } // for

} // lar::example::Disturbance::produce()

//------------------------------------------------------------------------------
void lar::example::Disturbance::throwArtException()
{

  throw art::Exception(art::errors::LogicError) << "I want to annoy you.\n";

} // lar::example::Disturbance::throwArtException()

//------------------------------------------------------------------------------
DEFINE_ART_MODULE(lar::example::Disturbance)

//------------------------------------------------------------------------------