TrigDecisionToolLite.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TrigDecision_TrigDecisionToolLite_h
#define TrigDecision_TrigDecisionToolLite_h
/**********************************************************************************
 * @class  : TrigDecisionToolLite
 *
 * @brief Lightweight alternate to the TrigDecisionTool, without configuration access.
 * 
 * The TrigDecisionToolLite provides a minimal interface with the per-event trigger payload.
 * Unlike the full version, this tool does NOT interface with the trigger configuration data.
 * This tool will only allow access to information from the HLT navigation container which can be
 * interpreted independently of the configuration. This includes per-chain feature access. 
 * And HLT chain isPassed information, as returned from the HLT navigation terminus node.
 *
 ***********************************************************************************/
 
#include "AsgTools/AsgTool.h"
#include <AsgTools/PropertyWrapper.h>
#include "AsgDataHandles/ReadHandleKey.h"
 
#include "TrigCompositeUtils/TrigCompositeUtils.h"
#include "TrigCompositeUtils/TypelessLinkInfo.h"
 
#include "TrigAnalysisHelpers/FeatureRequestDescriptor.h"
 
#include "TrigDecisionInterface/ITrigDecisionToolLite.h"
 
namespace Trig {
  class TrigDecisionToolLite : public asg::AsgTool, virtual public ITrigDecisionToolLite
  {
    ASG_TOOL_CLASS1(TrigDecisionToolLite, ITrigDecisionToolLite)
 
  public:
 
    TrigDecisionToolLite(const std::string& name);
    ~TrigDecisionToolLite() = default;
 
    StatusCode initialize();
 
    virtual bool isPassed(const HLT::Identifier& chain, const EventContext& ctx) const final;
 
    virtual bool isPassed(const std::string& chain, const EventContext& ctx) const final;
 
    virtual bool isPassed(const std::vector<HLT::Identifier>& chains, const EventContext& ctx) const final;
 
    virtual bool isPassed(const std::vector<std::string>& chains, const EventContext& ctx) const final;
 
  private:
 
    virtual std::vector<TrigCompositeUtils::TypelessLinkInfo> 
      typelessFeatures( const Trig::FeatureRequestDescriptor& frd, const CLID clid, const EventContext& ctx) const final;
 
    virtual const asg::EventStoreType* getEventStore() const final;

    StatusCode fillPassingChainsSet(TrigCompositeUtils::DecisionIDContainer& setOfAllPassingChains, const EventContext& ctx) const;
 
    SG::ReadHandleKey<TrigCompositeUtils::DecisionContainer> m_HLTSummaryKeyIn {this, "HLTSummary",
      "HLTNav_Summary_DAODSlimmed", "HLT navigation summary container key"};
 
  public:
 
    static std::atomic<bool> s_printWarningMessages ATLAS_THREAD_SAFE;
 
  };
 
} // End of namespace
 
#endif