AlgToChainTool.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TrigCompositeUtils_AlgToChainTool_h
#define TrigCompositeUtils_AlgToChainTool_h
 
#ifndef XAOD_STANDALONE
 
#include <string>
#include <set>
#include <vector>
#include <map>
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "TrigCompositeUtils/TrigCompositeUtils.h"
#include "TrigConfData/HLTMenu.h"
 
 
namespace TrigCompositeUtils {

 
  class AlgToChainTool : public AthAlgTool {
  public:
     // Helper struct to save chain info
    struct ChainInfo {
        TrigCompositeUtils::DecisionID id;
        std::string name;
        std::vector<std::string> groups;
        bool isPassRaw;
      };
 
      AlgToChainTool(const std::string& type, const std::string& name, const IInterface* parent);
 
      virtual ~AlgToChainTool();
 
      virtual StatusCode initialize() override;
 
      virtual StatusCode start() override;

      std::vector<std::string> getChainsForAlg(const std::string& algorithmName) const;

      std::set<std::string> getActiveChainsForAlg(const std::string& algorithmName, const EventContext& context) const;

      StatusCode getChainsForAllAlgs(const EventContext& context, std::map<std::string, std::set<std::string>>& algToChain) const;

      std::set<TrigCompositeUtils::DecisionID> retrieveActiveChains(const EventContext& context, const std::string& collectionName = "") const;

      StatusCode getAllChains(std::vector<TrigConf::Chain>&) const;

      StatusCode getChainInfo(const EventContext& context, TrigCompositeUtils::DecisionID id, ChainInfo& info) const;

      StatusCode getAllActiveSequences(const EventContext& context, std::map<std::string, std::string>& algToSeq);

      void cacheSGKeys(const EventContext& context);
 
  private:
      SG::ReadHandle<TrigCompositeUtils::DecisionContainer> getDecisionFromStore(SmartIF<SGImplSvc>& eventStore, const std::string& key) const;
 
      SG::ReadHandleKey<TrigConf::HLTMenu> m_HLTMenuKey{ this, "HLTTriggerMenu", "DetectorStore+HLTTriggerMenu", "HLT Menu" };
 
      std::map<std::string, std::vector<TrigConf::Chain>> m_sequencerToChainMap;
      std::map<std::string, std::vector<std::string>> m_algToSequencersMap;
 
      std::vector<std::string> m_cachedEventStoreKeys;
      uint64_t  m_cachedEventID{};
 
      // Based on the sequence name create the first part of the name of collection from the decision store
      std::string createCollectionName(const std::string& sequenceName) const;

      std::vector<std::string> readSGKeys(const EventContext& context) const;

      std::set<TrigCompositeUtils::DecisionID> retrieveActiveChainsForKeys(const EventContext& context, const std::string& collectionName, const std::vector<std::string>& keys) const;
  };
}
 
#endif // XAOD_STANDALONE
 
#endif // TrigCompositeUtils_AlgToChainTool_h