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VolumeBasedMagneticFieldESProducerFromDB.cc
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VolumeBasedMagneticFieldESProducerFromDB.cc
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/** \class VolumeBasedMagneticFieldESProducerFromDB
*
* Producer for the VolumeBasedMagneticField, taking all inputs (geometry, etc) from DB
*
*/
#include "FWCore/Framework/interface/EventSetupRecordIntervalFinder.h"
#include "FWCore/Framework/interface/ESProducer.h"
#include "CondFormats/RunInfo/interface/RunInfo.h"
#include "CondFormats/DataRecord/interface/RunSummaryRcd.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "MagneticField/VolumeBasedEngine/interface/VolumeBasedMagneticField.h"
#include "MagneticField/ParametrizedEngine/interface/ParametrizedMagneticFieldFactory.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/ESProductTag.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "MagneticField/GeomBuilder/src/MagGeoBuilderFromDDD.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"
#include "DetectorDescription/Core/interface/DDRoot.h"
#include "DetectorDescription/Parser/interface/DDLParser.h"
#include "CondFormats/Common/interface/FileBlob.h"
#include "CondFormats/DataRecord/interface/MFGeometryFileRcd.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
#include "CondFormats/MFObjects/interface/MagFieldConfig.h"
#include "CondFormats/DataRecord/interface/MagFieldConfigRcd.h"
#include <string>
#include <vector>
#include <iostream>
#include <memory>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/lexical_cast.hpp>
using namespace std;
using namespace magneticfield;
using namespace edm;
namespace magneticfield {
class VolumeBasedMagneticFieldESProducerFromDB : public edm::ESProducer {
public:
VolumeBasedMagneticFieldESProducerFromDB(const edm::ParameterSet& iConfig);
// forbid copy ctor and assignment op.
VolumeBasedMagneticFieldESProducerFromDB(const VolumeBasedMagneticFieldESProducerFromDB&) = delete;
const VolumeBasedMagneticFieldESProducerFromDB& operator=(const VolumeBasedMagneticFieldESProducerFromDB&) = delete;
std::shared_ptr<MagFieldConfig const> chooseConfigViaParameter(const IdealMagneticFieldRecord& iRecord);
std::shared_ptr<MagFieldConfig const> chooseConfigAtRuntime(const IdealMagneticFieldRecord& iRecord);
std::unique_ptr<MagneticField> produce(const IdealMagneticFieldRecord& iRecord);
static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
private:
static std::string_view closerNominalLabel(float current);
edm::ESGetToken<MagFieldConfig, MagFieldConfigRcd> mayGetConfigToken_;
edm::ESGetToken<RunInfo, RunInfoRcd> runInfo_;
edm::ESGetToken<MagFieldConfig, MagFieldConfigRcd> knownFromParamConfigToken_;
//NOTE: change of record since this MagFieldConfig was chosen based on data
// from the record RunInfoRcd so therefore has a dependency upon that record
edm::ESGetToken<MagFieldConfig, IdealMagneticFieldRecord> chosenConfigToken_;
edm::ESGetToken<FileBlob, MFGeometryFileRcd> mayConsumeBlobToken_;
const int current_;
const bool debug_;
};
} // namespace magneticfield
VolumeBasedMagneticFieldESProducerFromDB::VolumeBasedMagneticFieldESProducerFromDB(const edm::ParameterSet& iConfig)
: current_(iConfig.getParameter<int>("valueOverride")),
debug_(iConfig.getUntrackedParameter<bool>("debugBuilder")) {
std::string const myConfigLabel = "VBMFESChoice";
//Based on configuration, pick algorithm to produce the proper MagFieldConfig with a specific label
if (current_ < 0) {
//We do not know what to get until we first read RunInfo
setWhatProduced(
this, &VolumeBasedMagneticFieldESProducerFromDB::chooseConfigAtRuntime, edm::es::Label(myConfigLabel))
.setMayConsume(
mayGetConfigToken_,
[](auto const& iGet, edm::ESTransientHandle<RunInfo> iHandle) {
return iGet("", closerNominalLabel(iHandle->m_avg_current));
},
edm::ESProductTag<RunInfo, RunInfoRcd>("", ""));
} else {
//we know exactly what we are going to get
setWhatProduced(
this, &VolumeBasedMagneticFieldESProducerFromDB::chooseConfigViaParameter, edm::es::Label(myConfigLabel))
.setConsumes(runInfo_)
.setConsumes(knownFromParamConfigToken_, edm::ESInputTag(""s, std::string(closerNominalLabel(current_))));
}
auto const label = iConfig.getUntrackedParameter<std::string>("label");
auto const myConfigTag = edm::ESInputTag(iConfig.getParameter<std::string>("@module_label"), myConfigLabel);
//We use the MagFieldConfig created above to decide which FileBlob to use
setWhatProduced(this, label)
.setMayConsume(
mayConsumeBlobToken_,
[](auto const& iGet, edm::ESTransientHandle<MagFieldConfig> iConfig) {
if (iConfig->version == "parametrizedMagneticField") {
return iGet.nothing();
}
return iGet("", std::to_string(iConfig->geometryVersion));
},
edm::ESProductTag<MagFieldConfig, IdealMagneticFieldRecord>(myConfigTag))
.setConsumes(chosenConfigToken_, myConfigTag); //Use same tag as the choice
}
std::shared_ptr<MagFieldConfig const> VolumeBasedMagneticFieldESProducerFromDB::chooseConfigAtRuntime(
IdealMagneticFieldRecord const& iRcd) {
edm::ESHandle<MagFieldConfig> config = iRcd.getHandle(mayGetConfigToken_);
//just forward what we just got but do not take ownership
return std::shared_ptr<MagFieldConfig const>(config.product(), [](auto*) {});
}
std::shared_ptr<MagFieldConfig const> VolumeBasedMagneticFieldESProducerFromDB::chooseConfigViaParameter(
const IdealMagneticFieldRecord& iRecord) {
auto config = iRecord.getHandle(knownFromParamConfigToken_);
//just forward what we just got but do not take ownership
return std::shared_ptr<MagFieldConfig const>(config.product(), [](auto*) {});
}
// ------------ method called to produce the data ------------
std::unique_ptr<MagneticField> VolumeBasedMagneticFieldESProducerFromDB::produce(
const IdealMagneticFieldRecord& iRecord) {
auto const& conf = iRecord.getTransientHandle(chosenConfigToken_);
std::unique_ptr<MagneticField> paramField =
ParametrizedMagneticFieldFactory::get(conf->slaveFieldVersion, conf->slaveFieldParameters);
if (conf->version == "parametrizedMagneticField") {
// The map consist of only the parametrization in this case
return paramField;
}
// Full VolumeBased map + parametrization
MagGeoBuilderFromDDD builder(conf->version, conf->geometryVersion, debug_);
// Set scaling factors
if (!conf->keys.empty()) {
builder.setScaling(conf->keys, conf->values);
}
// Set specification for the grid tables to be used.
if (!conf->gridFiles.empty()) {
builder.setGridFiles(conf->gridFiles);
}
// Build the geometry (DDDCompactView) from the DB blob
// (code taken from GeometryReaders/XMLIdealGeometryESSource/src/XMLIdealMagneticFieldGeometryESProducer.cc)
auto const& blob = iRecord.getTransientHandle(mayConsumeBlobToken_);
DDCompactView cpv{DDName("cmsMagneticField:MAGF")};
DDLParser parser(cpv);
parser.getDDLSAX2FileHandler()->setUserNS(true);
parser.clearFiles();
std::unique_ptr<std::vector<unsigned char> > tb = blob->getUncompressedBlob();
parser.parse(*tb, tb->size());
cpv.lockdown();
builder.build(cpv);
// Build the VB map. Ownership of the parametrization is transferred to it
return std::make_unique<VolumeBasedMagneticField>(conf->geometryVersion,
builder.barrelLayers(),
builder.endcapSectors(),
builder.barrelVolumes(),
builder.endcapVolumes(),
builder.maxR(),
builder.maxZ(),
paramField.release(),
true);
}
std::string_view VolumeBasedMagneticFieldESProducerFromDB::closerNominalLabel(float current) {
constexpr std::array<int, 7> nominalCurrents = {{-1, 0, 9558, 14416, 16819, 18268, 19262}};
constexpr std::array<std::string_view, 7> nominalLabels = {{"3.8T", "0T", "2T", "3T", "3.5T", "3.8T", "4T"}};
int i = 0;
for (; i < (int)nominalLabels.size() - 1; i++) {
if (2 * current < nominalCurrents[i] + nominalCurrents[i + 1])
return nominalLabels[i];
}
return nominalLabels[i];
}
void VolumeBasedMagneticFieldESProducerFromDB::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
desc.addUntracked<bool>("debugBuilder", false);
desc.add<int>("valueOverride", -1)->setComment("Force value of current (in A); take the value from DB if < 0.");
desc.addUntracked<std::string>("label", "");
descriptions.addDefault(desc);
}
DEFINE_FWK_EVENTSETUP_MODULE(VolumeBasedMagneticFieldESProducerFromDB);